Need to include <simgear_config.h> to pick up the WIN32 definition.

of this project.

COPYING

@@ -0,0 +1,481 @@
+                  GNU LIBRARY GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1991 Free Software Foundation, Inc.
+                    59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+[This is the first released version of the library GPL.  It is
+ numbered 2 because it goes with version 2 of the ordinary GPL.]
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+Licenses are intended to guarantee your freedom to share and change
+free software--to make sure the software is free for all its users.
+
+  This license, the Library General Public License, applies to some
+specially designated Free Software Foundation software, and to any
+other libraries whose authors decide to use it.  You can use it for
+your libraries, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if
+you distribute copies of the library, or if you modify it.
+
+  For example, if you distribute copies of the library, whether gratis
+or for a fee, you must give the recipients all the rights that we gave
+you.  You must make sure that they, too, receive or can get the source
+code.  If you link a program with the library, you must provide
+complete object files to the recipients so that they can relink them
+with the library, after making changes to the library and recompiling
+it.  And you must show them these terms so they know their rights.
+
+  Our method of protecting your rights has two steps: (1) copyright
+the library, and (2) offer you this license which gives you legal
+permission to copy, distribute and/or modify the library.
+
+  Also, for each distributor's protection, we want to make certain
+that everyone understands that there is no warranty for this free
+library.  If the library is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original
+version, so that any problems introduced by others will not reflect on
+the original authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that companies distributing free
+software will individually obtain patent licenses, thus in effect
+transforming the program into proprietary software.  To prevent this,
+we have made it clear that any patent must be licensed for everyone's
+free use or not licensed at all.
+
+  Most GNU software, including some libraries, is covered by the ordinary
+GNU General Public License, which was designed for utility programs.  This
+license, the GNU Library General Public License, applies to certain
+designated libraries.  This license is quite different from the ordinary
+one; be sure to read it in full, and don't assume that anything in it is
+the same as in the ordinary license.
+
+  The reason we have a separate public license for some libraries is that
+they blur the distinction we usually make between modifying or adding to a
+program and simply using it.  Linking a program with a library, without
+changing the library, is in some sense simply using the library, and is
+analogous to running a utility program or application program.  However, in
+a textual and legal sense, the linked executable is a combined work, a
+derivative of the original library, and the ordinary General Public License
+treats it as such.
+
+  Because of this blurred distinction, using the ordinary General
+Public License for libraries did not effectively promote software
+sharing, because most developers did not use the libraries.  We
+concluded that weaker conditions might promote sharing better.
+
+  However, unrestricted linking of non-free programs would deprive the
+users of those programs of all benefit from the free status of the
+libraries themselves.  This Library General Public License is intended to
+permit developers of non-free programs to use free libraries, while
+preserving your freedom as a user of such programs to change the free
+libraries that are incorporated in them.  (We have not seen how to achieve
+this as regards changes in header files, but we have achieved it as regards
+changes in the actual functions of the Library.)  The hope is that this
+will lead to faster development of free libraries.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.  Pay close attention to the difference between a
+"work based on the library" and a "work that uses the library".  The
+former contains code derived from the library, while the latter only
+works together with the library.
+
+  Note that it is possible for a library to be covered by the ordinary
+General Public License rather than by this special one.
+
+                  GNU LIBRARY GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License Agreement applies to any software library which
+contains a notice placed by the copyright holder or other authorized
+party saying it may be distributed under the terms of this Library
+General Public License (also called "this License").  Each licensee is
+addressed as "you".
+
+  A "library" means a collection of software functions and/or data
+prepared so as to be conveniently linked with application programs
+(which use some of those functions and data) to form executables.
+
+  The "Library", below, refers to any such software library or work
+which has been distributed under these terms.  A "work based on the
+Library" means either the Library or any derivative work under
+copyright law: that is to say, a work containing the Library or a
+portion of it, either verbatim or with modifications and/or translated
+straightforwardly into another language.  (Hereinafter, translation is
+included without limitation in the term "modification".)
+
+  "Source code" for a work means the preferred form of the work for
+making modifications to it.  For a library, complete source code means
+all the source code for all modules it contains, plus any associated
+interface definition files, plus the scripts used to control compilation
+and installation of the library.
+
+  Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running a program using the Library is not restricted, and output from
+such a program is covered only if its contents constitute a work based
+on the Library (independent of the use of the Library in a tool for
+writing it).  Whether that is true depends on what the Library does
+and what the program that uses the Library does.
+  
+  1. You may copy and distribute verbatim copies of the Library's
+complete source code as you receive it, in any medium, provided that
+you conspicuously and appropriately publish on each copy an
+appropriate copyright notice and disclaimer of warranty; keep intact
+all the notices that refer to this License and to the absence of any
+warranty; and distribute a copy of this License along with the
+Library.
+
+  You may charge a fee for the physical act of transferring a copy,
+and you may at your option offer warranty protection in exchange for a
+fee.
+
+  2. You may modify your copy or copies of the Library or any portion
+of it, thus forming a work based on the Library, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) The modified work must itself be a software library.
+
+    b) You must cause the files modified to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    c) You must cause the whole of the work to be licensed at no
+    charge to all third parties under the terms of this License.
+
+    d) If a facility in the modified Library refers to a function or a
+    table of data to be supplied by an application program that uses
+    the facility, other than as an argument passed when the facility
+    is invoked, then you must make a good faith effort to ensure that,
+    in the event an application does not supply such function or
+    table, the facility still operates, and performs whatever part of
+    its purpose remains meaningful.
+
+    (For example, a function in a library to compute square roots has
+    a purpose that is entirely well-defined independent of the
+    application.  Therefore, Subsection 2d requires that any
+    application-supplied function or table used by this function must
+    be optional: if the application does not supply it, the square
+    root function must still compute square roots.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Library,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Library, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote
+it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Library.
+
+In addition, mere aggregation of another work not based on the Library
+with the Library (or with a work based on the Library) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may opt to apply the terms of the ordinary GNU General Public
+License instead of this License to a given copy of the Library.  To do
+this, you must alter all the notices that refer to this License, so
+that they refer to the ordinary GNU General Public License, version 2,
+instead of to this License.  (If a newer version than version 2 of the
+ordinary GNU General Public License has appeared, then you can specify
+that version instead if you wish.)  Do not make any other change in
+these notices.
+
+  Once this change is made in a given copy, it is irreversible for
+that copy, so the ordinary GNU General Public License applies to all
+subsequent copies and derivative works made from that copy.
+
+  This option is useful when you wish to copy part of the code of
+the Library into a program that is not a library.
+
+  4. You may copy and distribute the Library (or a portion or
+derivative of it, under Section 2) in object code or executable form
+under the terms of Sections 1 and 2 above provided that you accompany
+it with the complete corresponding machine-readable source code, which
+must be distributed under the terms of Sections 1 and 2 above on a
+medium customarily used for software interchange.
+
+  If distribution of object code is made by offering access to copy
+from a designated place, then offering equivalent access to copy the
+source code from the same place satisfies the requirement to
+distribute the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  5. A program that contains no derivative of any portion of the
+Library, but is designed to work with the Library by being compiled or
+linked with it, is called a "work that uses the Library".  Such a
+work, in isolation, is not a derivative work of the Library, and
+therefore falls outside the scope of this License.
+
+  However, linking a "work that uses the Library" with the Library
+creates an executable that is a derivative of the Library (because it
+contains portions of the Library), rather than a "work that uses the
+library".  The executable is therefore covered by this License.
+Section 6 states terms for distribution of such executables.
+
+  When a "work that uses the Library" uses material from a header file
+that is part of the Library, the object code for the work may be a
+derivative work of the Library even though the source code is not.
+Whether this is true is especially significant if the work can be
+linked without the Library, or if the work is itself a library.  The
+threshold for this to be true is not precisely defined by law.
+
+  If such an object file uses only numerical parameters, data
+structure layouts and accessors, and small macros and small inline
+functions (ten lines or less in length), then the use of the object
+file is unrestricted, regardless of whether it is legally a derivative
+work.  (Executables containing this object code plus portions of the
+Library will still fall under Section 6.)
+
+  Otherwise, if the work is a derivative of the Library, you may
+distribute the object code for the work under the terms of Section 6.
+Any executables containing that work also fall under Section 6,
+whether or not they are linked directly with the Library itself.
+
+  6. As an exception to the Sections above, you may also compile or
+link a "work that uses the Library" with the Library to produce a
+work containing portions of the Library, and distribute that work
+under terms of your choice, provided that the terms permit
+modification of the work for the customer's own use and reverse
+engineering for debugging such modifications.
+
+  You must give prominent notice with each copy of the work that the
+Library is used in it and that the Library and its use are covered by
+this License.  You must supply a copy of this License.  If the work
+during execution displays copyright notices, you must include the
+copyright notice for the Library among them, as well as a reference
+directing the user to the copy of this License.  Also, you must do one
+of these things:
+
+    a) Accompany the work with the complete corresponding
+    machine-readable source code for the Library including whatever
+    changes were used in the work (which must be distributed under
+    Sections 1 and 2 above); and, if the work is an executable linked
+    with the Library, with the complete machine-readable "work that
+    uses the Library", as object code and/or source code, so that the
+    user can modify the Library and then relink to produce a modified
+    executable containing the modified Library.  (It is understood
+    that the user who changes the contents of definitions files in the
+    Library will not necessarily be able to recompile the application
+    to use the modified definitions.)
+
+    b) Accompany the work with a written offer, valid for at
+    least three years, to give the same user the materials
+    specified in Subsection 6a, above, for a charge no more
+    than the cost of performing this distribution.
+
+    c) If distribution of the work is made by offering access to copy
+    from a designated place, offer equivalent access to copy the above
+    specified materials from the same place.
+
+    d) Verify that the user has already received a copy of these
+    materials or that you have already sent this user a copy.
+
+  For an executable, the required form of the "work that uses the
+Library" must include any data and utility programs needed for
+reproducing the executable from it.  However, as a special exception,
+the source code distributed need not include anything that is normally
+distributed (in either source or binary form) with the major
+components (compiler, kernel, and so on) of the operating system on
+which the executable runs, unless that component itself accompanies
+the executable.
+
+  It may happen that this requirement contradicts the license
+restrictions of other proprietary libraries that do not normally
+accompany the operating system.  Such a contradiction means you cannot
+use both them and the Library together in an executable that you
+distribute.
+
+  7. You may place library facilities that are a work based on the
+Library side-by-side in a single library together with other library
+facilities not covered by this License, and distribute such a combined
+library, provided that the separate distribution of the work based on
+the Library and of the other library facilities is otherwise
+permitted, and provided that you do these two things:
+
+    a) Accompany the combined library with a copy of the same work
+    based on the Library, uncombined with any other library
+    facilities.  This must be distributed under the terms of the
+    Sections above.
+
+    b) Give prominent notice with the combined library of the fact
+    that part of it is a work based on the Library, and explaining
+    where to find the accompanying uncombined form of the same work.
+
+  8. You may not copy, modify, sublicense, link with, or distribute
+the Library except as expressly provided under this License.  Any
+attempt otherwise to copy, modify, sublicense, link with, or
+distribute the Library is void, and will automatically terminate your
+rights under this License.  However, parties who have received copies,
+or rights, from you under this License will not have their licenses
+terminated so long as such parties remain in full compliance.
+
+  9. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Library or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Library (or any work based on the
+Library), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Library or works based on it.
+
+  10. Each time you redistribute the Library (or any work based on the
+Library), the recipient automatically receives a license from the
+original licensor to copy, distribute, link with or modify the Library
+subject to these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  11. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Library at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Library by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Library.
+
+If any portion of this section is held invalid or unenforceable under any
+particular circumstance, the balance of the section is intended to apply,
+and the section as a whole is intended to apply in other circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  12. If the distribution and/or use of the Library is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Library under this License may add
+an explicit geographical distribution limitation excluding those countries,
+so that distribution is permitted only in or among countries not thus
+excluded.  In such case, this License incorporates the limitation as if
+written in the body of this License.
+
+  13. The Free Software Foundation may publish revised and/or new
+versions of the Library General Public License from time to time.
+Such new versions will be similar in spirit to the present version,
+but may differ in detail to address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Library
+specifies a version number of this License which applies to it and
+"any later version", you have the option of following the terms and
+conditions either of that version or of any later version published by
+the Free Software Foundation.  If the Library does not specify a
+license version number, you may choose any version ever published by
+the Free Software Foundation.
+
+  14. If you wish to incorporate parts of the Library into other free
+programs whose distribution conditions are incompatible with these,
+write to the author to ask for permission.  For software which is
+copyrighted by the Free Software Foundation, write to the Free
+Software Foundation; we sometimes make exceptions for this.  Our
+decision will be guided by the two goals of preserving the free status
+of all derivatives of our free software and of promoting the sharing
+and reuse of software generally.
+
+                            NO WARRANTY
+
+  15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
+WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
+EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
+OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
+KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
+LIBRARY IS WITH YOU.  SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
+THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
+WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
+AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
+FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
+CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
+LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
+RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
+FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
+SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+DAMAGES.
+
+                     END OF TERMS AND CONDITIONS
+
+           How to Apply These Terms to Your New Libraries
+
+  If you develop a new library, and you want it to be of the greatest
+possible use to the public, we recommend making it free software that
+everyone can redistribute and change.  You can do so by permitting
+redistribution under these terms (or, alternatively, under the terms of the
+ordinary General Public License).
+
+  To apply these terms, attach the following notices to the library.  It is
+safest to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least the
+"copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the library's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This library is free software; you can redistribute it and/or
+    modify it under the terms of the GNU Library General Public
+    License as published by the Free Software Foundation; either
+    version 2 of the License, or (at your option) any later version.
+
+    This library is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+    Library General Public License for more details.
+
+    You should have received a copy of the GNU Library General Public
+    License along with this library; if not, write to the Free
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+Also add information on how to contact you by electronic and paper mail.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the library, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the
+  library `Frob' (a library for tweaking knobs) written by James Random Hacker.
+
+  <signature of Ty Coon>, 1 April 1990
+  Ty Coon, President of Vice
+
+That's all there is to it!

Doxyfile

@@ -0,0 +1,806 @@
+# Doxyfile 1.2.6
+
+# This file describes the settings to be used by doxygen for a project
+#
+# All text after a hash (#) is considered a comment and will be ignored
+# The format is:
+#       TAG = value [value, ...]
+# For lists items can also be appended using:
+#       TAG += value [value, ...]
+# Values that contain spaces should be placed between quotes (" ")
+
+#---------------------------------------------------------------------------
+# General configuration options
+#---------------------------------------------------------------------------
+
+# The PROJECT_NAME tag is a single word (or a sequence of words surrounded 
+# by quotes) that should identify the project. 
+
+PROJECT_NAME           = SimGear
+
+# The PROJECT_NUMBER tag can be used to enter a project or revision number. 
+# This could be handy for archiving the generated documentation or 
+# if some version control system is used.
+
+PROJECT_NUMBER         = 0.0.15
+
+# The OUTPUT_DIRECTORY tag is used to specify the (relative or absolute) 
+# base path where the generated documentation will be put. 
+# If a relative path is entered, it will be relative to the location 
+# where doxygen was started. If left blank the current directory will be used.
+
+OUTPUT_DIRECTORY       = ../doxy
+
+# The OUTPUT_LANGUAGE tag is used to specify the language in which all 
+# documentation generated by doxygen is written. Doxygen will use this 
+# information to generate all constant output in the proper language. 
+# The default language is English, other supported languages are: 
+# Dutch, French, Italian, Czech, Swedish, German, Finnish, Japanese, 
+# Korean, Hungarian, Norwegian, Spanish, Romanian, Russian, Croatian, 
+# Polish, Portuguese and Slovene.
+
+OUTPUT_LANGUAGE        = English
+
+# If the EXTRACT_ALL tag is set to YES doxygen will assume all entities in 
+# documentation are documented, even if no documentation was available. 
+# Private class members and static file members will be hidden unless 
+# the EXTRACT_PRIVATE and EXTRACT_STATIC tags are set to YES 
+
+EXTRACT_ALL            = NO
+
+# If the EXTRACT_PRIVATE tag is set to YES all private members of a class 
+# will be included in the documentation. 
+
+EXTRACT_PRIVATE        = NO
+
+# If the EXTRACT_STATIC tag is set to YES all static members of a file 
+# will be included in the documentation. 
+
+EXTRACT_STATIC         = NO
+
+# If the HIDE_UNDOC_MEMBERS tag is set to YES, Doxygen will hide all 
+# undocumented members of documented classes, files or namespaces. 
+# If set to NO (the default) these members will be included in the 
+# various overviews, but no documentation section is generated. 
+# This option has no effect if EXTRACT_ALL is enabled. 
+
+HIDE_UNDOC_MEMBERS     = NO
+
+# If the HIDE_UNDOC_CLASSES tag is set to YES, Doxygen will hide all 
+# undocumented classes that are normally visible in the class hierarchy. 
+# If set to NO (the default) these class will be included in the various 
+# overviews. This option has no effect if EXTRACT_ALL is enabled. 
+
+HIDE_UNDOC_CLASSES     = NO
+
+# If the BRIEF_MEMBER_DESC tag is set to YES (the default) Doxygen will 
+# include brief member descriptions after the members that are listed in 
+# the file and class documentation (similar to JavaDoc). 
+# Set to NO to disable this. 
+
+BRIEF_MEMBER_DESC      = YES
+
+# If the REPEAT_BRIEF tag is set to YES (the default) Doxygen will prepend 
+# the brief description of a member or function before the detailed description. 
+# Note: if both HIDE_UNDOC_MEMBERS and BRIEF_MEMBER_DESC are set to NO, the 
+# brief descriptions will be completely suppressed. 
+
+REPEAT_BRIEF           = YES
+
+# If the ALWAYS_DETAILED_SEC and REPEAT_BRIEF tags are both set to YES then 
+# Doxygen will generate a detailed section even if there is only a brief 
+# description. 
+
+ALWAYS_DETAILED_SEC    = NO
+
+# If the FULL_PATH_NAMES tag is set to YES then Doxygen will prepend the full 
+# path before files name in the file list and in the header files. If set 
+# to NO the shortest path that makes the file name unique will be used. 
+
+FULL_PATH_NAMES        = NO
+
+# If the FULL_PATH_NAMES tag is set to YES then the STRIP_FROM_PATH tag 
+# can be used to strip a user defined part of the path. Stripping is 
+# only done if one of the specified strings matches the left-hand part of 
+# the path. It is allowed to use relative paths in the argument list.
+
+STRIP_FROM_PATH        = 
+
+# The INTERNAL_DOCS tag determines if documentation 
+# that is typed after a \internal command is included. If the tag is set 
+# to NO (the default) then the documentation will be excluded. 
+# Set it to YES to include the internal documentation. 
+
+INTERNAL_DOCS          = NO
+
+# If the CLASS_DIAGRAMS tag is set to YES (the default) Doxygen will 
+# generate a class diagram (in Html and LaTeX) for classes with base or 
+# super classes. Setting the tag to NO turns the diagrams off. 
+
+CLASS_DIAGRAMS         = YES
+
+# If the SOURCE_BROWSER tag is set to YES then a list of source files will 
+# be generated. Documented entities will be cross-referenced with these sources. 
+
+SOURCE_BROWSER         = YES
+
+# Setting the INLINE_SOURCES tag to YES will include the body 
+# of functions and classes directly in the documentation. 
+
+INLINE_SOURCES         = NO
+
+# Setting the STRIP_CODE_COMMENTS tag to YES (the default) will instruct 
+# doxygen to hide any special comment blocks from generated source code 
+# fragments. Normal C and C++ comments will always remain visible. 
+
+STRIP_CODE_COMMENTS    = YES
+
+# If the CASE_SENSE_NAMES tag is set to NO then Doxygen will only generate 
+# file names in lower case letters. If set to YES upper case letters are also 
+# allowed. This is useful if you have classes or files whose names only differ 
+# in case and if your file system supports case sensitive file names. Windows 
+# users are adviced to set this option to NO.
+
+CASE_SENSE_NAMES       = YES
+
+# If the HIDE_SCOPE_NAMES tag is set to NO (the default) then Doxygen 
+# will show members with their full class and namespace scopes in the 
+# documentation. If set to YES the scope will be hidden. 
+
+HIDE_SCOPE_NAMES       = NO
+
+# If the VERBATIM_HEADERS tag is set to YES (the default) then Doxygen 
+# will generate a verbatim copy of the header file for each class for 
+# which an include is specified. Set to NO to disable this. 
+
+VERBATIM_HEADERS       = YES
+
+# If the SHOW_INCLUDE_FILES tag is set to YES (the default) then Doxygen 
+# will put list of the files that are included by a file in the documentation 
+# of that file. 
+
+SHOW_INCLUDE_FILES     = YES
+
+# If the JAVADOC_AUTOBRIEF tag is set to YES then Doxygen 
+# will interpret the first line (until the first dot) of a JavaDoc-style 
+# comment as the brief description. If set to NO, the JavaDoc 
+# comments  will behave just like the Qt-style comments (thus requiring an 
+# explict @brief command for a brief description. 
+
+JAVADOC_AUTOBRIEF      = YES
+
+# If the INHERIT_DOCS tag is set to YES (the default) then an undocumented 
+# member inherits the documentation from any documented member that it 
+# reimplements. 
+
+INHERIT_DOCS           = YES
+
+# If the INLINE_INFO tag is set to YES (the default) then a tag [inline] 
+# is inserted in the documentation for inline members. 
+
+INLINE_INFO            = YES
+
+# If the SORT_MEMBER_DOCS tag is set to YES (the default) then doxygen 
+# will sort the (detailed) documentation of file and class members 
+# alphabetically by member name. If set to NO the members will appear in 
+# declaration order. 
+
+SORT_MEMBER_DOCS       = YES
+
+# If member grouping is used in the documentation and the DISTRIBUTE_GROUP_DOC 
+# tag is set to YES, then doxygen will reuse the documentation of the first 
+# member in the group (if any) for the other members of the group. By default 
+# all members of a group must be documented explicitly.
+
+DISTRIBUTE_GROUP_DOC   = NO
+
+# The TAB_SIZE tag can be used to set the number of spaces in a tab. 
+# Doxygen uses this value to replace tabs by spaces in code fragments. 
+
+TAB_SIZE               = 8
+
+# The ENABLE_SECTIONS tag can be used to enable conditional 
+# documentation sections, marked by \if sectionname ... \endif. 
+
+ENABLED_SECTIONS       = 
+
+# The GENERATE_TODOLIST tag can be used to enable (YES) or 
+# disable (NO) the todo list. This list is created by putting \todo 
+# commands in the documentation.
+
+GENERATE_TODOLIST      = YES
+
+# The GENERATE_TESTLIST tag can be used to enable (YES) or 
+# disable (NO) the test list. This list is created by putting \test 
+# commands in the documentation.
+
+GENERATE_TESTLIST      = YES
+
+# The GENERATE_BUGLIST tag can be used to enable (YES) or 
+# disable (NO) the bug list. This list is created by putting \bug 
+# commands in the documentation.
+
+GENERATE_BUGLIST       = YES
+
+# This tag can be used to specify a number of aliases that acts 
+# as commands in the documentation. An alias has the form "name=value". 
+# For example adding "sideeffect=\par Side Effects:\n" will allow you to 
+# put the command \sideeffect (or @sideeffect) in the documentation, which 
+# will result in a user defined paragraph with heading "Side Effects:". 
+# You can put \n's in the value part of an alias to insert newlines. 
+
+ALIASES                = 
+
+# The MAX_INITIALIZER_LINES tag determines the maximum number of lines 
+# the initial value of a variable or define consist of for it to appear in 
+# the documentation. If the initializer consists of more lines than specified 
+# here it will be hidden. Use a value of 0 to hide initializers completely. 
+# The appearance of the initializer of individual variables and defines in the 
+# documentation can be controlled using \showinitializer or \hideinitializer 
+# command in the documentation regardless of this setting. 
+
+MAX_INITIALIZER_LINES  = 30
+
+# Set the OPTIMIZE_OUTPUT_FOR_C tag to YES if your project consists of C sources 
+# only. Doxygen will then generate output that is more tailored for C. 
+# For instance some of the names that are used will be different. The list 
+# of all members will be omitted, etc. 
+
+OPTIMIZE_OUTPUT_FOR_C  = NO
+
+# Set the SHOW_USED_FILES tag to NO to disable the list of files generated 
+# at the bottom of the documentation of classes and structs. If set to YES the 
+# list will mention the files that were used to generate the documentation. 
+
+SHOW_USED_FILES        = YES
+
+#---------------------------------------------------------------------------
+# configuration options related to warning and progress messages
+#---------------------------------------------------------------------------
+
+# The QUIET tag can be used to turn on/off the messages that are generated 
+# by doxygen. Possible values are YES and NO. If left blank NO is used. 
+
+QUIET                  = NO
+
+# The WARNINGS tag can be used to turn on/off the warning messages that are 
+# generated by doxygen. Possible values are YES and NO. If left blank 
+# NO is used. 
+
+WARNINGS               = YES
+
+# If WARN_IF_UNDOCUMENTED is set to YES, then doxygen will generate warnings 
+# for undocumented members. If EXTRACT_ALL is set to YES then this flag will 
+# automatically be disabled. 
+
+WARN_IF_UNDOCUMENTED   = YES
+
+# The WARN_FORMAT tag determines the format of the warning messages that 
+# doxygen can produce. The string should contain the $file, $line, and $text 
+# tags, which will be replaced by the file and line number from which the 
+# warning originated and the warning text. 
+
+WARN_FORMAT            = "$file:$line: $text"
+
+# The WARN_LOGFILE tag can be used to specify a file to which warning 
+# and error messages should be written. If left blank the output is written 
+# to stderr. 
+
+WARN_LOGFILE           = 
+
+#---------------------------------------------------------------------------
+# configuration options related to the input files
+#---------------------------------------------------------------------------
+
+# The INPUT tag can be used to specify the files and/or directories that contain 
+# documented source files. You may enter file names like "myfile.cpp" or 
+# directories like "/usr/src/myproject". Separate the files or directories 
+# with spaces. 
+
+INPUT                  = \
+	simgear/bucket \
+	simgear/compiler.h \
+	simgear/constants.h \
+	simgear/debug \
+	simgear/ephemeris \
+	simgear/io \
+	simgear/magvar \
+	simgear/math \
+	simgear/misc \
+	simgear/route \
+	simgear/screen \
+	simgear/serial \
+	simgear/sg_inlines.h \
+	simgear/sg_traits.hxx \
+	simgear/sg_zlib.h \
+	simgear/sky \
+	simgear/threads \
+	simgear/timing \
+	simgear/xml
+
+# If the value of the INPUT tag contains directories, you can use the 
+# FILE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp 
+# and *.h) to filter out the source-files in the directories. If left 
+# blank all files are included. 
+
+FILE_PATTERNS          = *.h *.hxx *.c *.cxx *.cpp
+
+# The RECURSIVE tag can be used to turn specify whether or not subdirectories 
+# should be searched for input files as well. Possible values are YES and NO. 
+# If left blank NO is used. 
+
+RECURSIVE              = YES
+
+# The EXCLUDE tag can be used to specify files and/or directories that should 
+# excluded from the INPUT source files. This way you can easily exclude a 
+# subdirectory from a directory tree whose root is specified with the INPUT tag. 
+
+EXCLUDE                = simgear/metakit simgear/zlib
+
+# If the value of the INPUT tag contains directories, you can use the 
+# EXCLUDE_PATTERNS tag to specify one or more wildcard patterns to exclude 
+# certain files from those directories. 
+
+EXCLUDE_PATTERNS       = 
+
+# The EXAMPLE_PATH tag can be used to specify one or more files or 
+# directories that contain example code fragments that are included (see 
+# the \include command). 
+
+EXAMPLE_PATH           = 
+
+# If the value of the EXAMPLE_PATH tag contains directories, you can use the 
+# EXAMPLE_PATTERNS tag to specify one or more wildcard pattern (like *.cpp 
+# and *.h) to filter out the source-files in the directories. If left 
+# blank all files are included. 
+
+EXAMPLE_PATTERNS       = 
+
+# The IMAGE_PATH tag can be used to specify one or more files or 
+# directories that contain image that are included in the documentation (see 
+# the \image command). 
+
+IMAGE_PATH             = 
+
+# The INPUT_FILTER tag can be used to specify a program that doxygen should 
+# invoke to filter for each input file. Doxygen will invoke the filter program 
+# by executing (via popen()) the command <filter> <input-file>, where <filter> 
+# is the value of the INPUT_FILTER tag, and <input-file> is the name of an 
+# input file. Doxygen will then use the output that the filter program writes 
+# to standard output. 
+
+INPUT_FILTER           = 
+
+# If the FILTER_SOURCE_FILES tag is set to YES, the input filter (if set using 
+# INPUT_FILTER) will be used to filter the input files when producing source 
+# files to browse. 
+
+FILTER_SOURCE_FILES    = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the alphabetical class index
+#---------------------------------------------------------------------------
+
+# If the ALPHABETICAL_INDEX tag is set to YES, an alphabetical index 
+# of all compounds will be generated. Enable this if the project 
+# contains a lot of classes, structs, unions or interfaces. 
+
+ALPHABETICAL_INDEX     = NO
+
+# If the alphabetical index is enabled (see ALPHABETICAL_INDEX) then 
+# the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns 
+# in which this list will be split (can be a number in the range [1..20]) 
+
+COLS_IN_ALPHA_INDEX    = 5
+
+# In case all classes in a project start with a common prefix, all 
+# classes will be put under the same header in the alphabetical index. 
+# The IGNORE_PREFIX tag can be used to specify one or more prefixes that 
+# should be ignored while generating the index headers. 
+
+IGNORE_PREFIX          = 
+
+#---------------------------------------------------------------------------
+# configuration options related to the HTML output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_HTML tag is set to YES (the default) Doxygen will 
+# generate HTML output. 
+
+GENERATE_HTML          = YES
+
+# The HTML_OUTPUT tag is used to specify where the HTML docs will be put. 
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# put in front of it. If left blank `html' will be used as the default path. 
+
+HTML_OUTPUT            = html
+
+# The HTML_HEADER tag can be used to specify a personal HTML header for 
+# each generated HTML page. If it is left blank doxygen will generate a 
+# standard header.
+
+HTML_HEADER            = 
+
+# The HTML_FOOTER tag can be used to specify a personal HTML footer for 
+# each generated HTML page. If it is left blank doxygen will generate a 
+# standard footer.
+
+HTML_FOOTER            = 
+
+# The HTML_STYLESHEET tag can be used to specify a user defined cascading 
+# style sheet that is used by each HTML page. It can be used to 
+# fine-tune the look of the HTML output. If the tag is left blank doxygen 
+# will generate a default style sheet 
+
+HTML_STYLESHEET        = 
+
+# If the HTML_ALIGN_MEMBERS tag is set to YES, the members of classes, 
+# files or namespaces will be aligned in HTML using tables. If set to 
+# NO a bullet list will be used. 
+
+HTML_ALIGN_MEMBERS     = YES
+
+# If the GENERATE_HTMLHELP tag is set to YES, additional index files 
+# will be generated that can be used as input for tools like the 
+# Microsoft HTML help workshop to generate a compressed HTML help file (.chm) 
+# of the generated HTML documentation. 
+
+GENERATE_HTMLHELP      = NO
+
+# If the GENERATE_HTMLHELP tag is set to YES, the GENERATE_CHI flag 
+# controls if a separate .chi index file is generated (YES) or that 
+# it should be included in the master .chm file (NO).
+
+GENERATE_CHI           = NO
+
+# If the GENERATE_HTMLHELP tag is set to YES, the BINARY_TOC flag 
+# controls whether a binary table of contents is generated (YES) or a 
+# normal table of contents (NO) in the .chm file.
+
+BINARY_TOC             = NO
+
+# The TOC_EXPAND flag can be set YES to add extra items for group members 
+# to the contents of the Html help documentation and to the tree view. 
+
+TOC_EXPAND             = NO
+
+# The DISABLE_INDEX tag can be used to turn on/off the condensed index at 
+# top of each HTML page. The value NO (the default) enables the index and 
+# the value YES disables it. 
+
+DISABLE_INDEX          = NO
+
+# This tag can be used to set the number of enum values (range [1..20]) 
+# that doxygen will group on one line in the generated HTML documentation. 
+
+ENUM_VALUES_PER_LINE   = 4
+
+# If the GENERATE_TREEVIEW tag is set to YES, a side panel will be
+# generated containing a tree-like index structure (just like the one that 
+# is generated for HTML Help). For this to work a browser that supports 
+# JavaScript and frames is required (for instance Netscape 4.0+ 
+# or Internet explorer 4.0+). 
+
+GENERATE_TREEVIEW      = NO
+
+# If the treeview is enabled (see GENERATE_TREEVIEW) then this tag can be 
+# used to set the initial width (in pixels) of the frame in which the tree 
+# is shown. 
+
+TREEVIEW_WIDTH         = 250
+
+#---------------------------------------------------------------------------
+# configuration options related to the LaTeX output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_LATEX tag is set to YES (the default) Doxygen will 
+# generate Latex output. 
+
+GENERATE_LATEX         = YES
+
+# The LATEX_OUTPUT tag is used to specify where the LaTeX docs will be put. 
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# put in front of it. If left blank `latex' will be used as the default path. 
+
+LATEX_OUTPUT           = latex
+
+# If the COMPACT_LATEX tag is set to YES Doxygen generates more compact 
+# LaTeX documents. This may be useful for small projects and may help to 
+# save some trees in general. 
+
+COMPACT_LATEX          = NO
+
+# The PAPER_TYPE tag can be used to set the paper type that is used 
+# by the printer. Possible values are: a4, a4wide, letter, legal and 
+# executive. If left blank a4wide will be used. 
+
+PAPER_TYPE             = a4wide
+
+# The EXTRA_PACKAGES tag can be to specify one or more names of LaTeX 
+# packages that should be included in the LaTeX output. 
+
+EXTRA_PACKAGES         = 
+
+# The LATEX_HEADER tag can be used to specify a personal LaTeX header for 
+# the generated latex document. The header should contain everything until 
+# the first chapter. If it is left blank doxygen will generate a 
+# standard header. Notice: only use this tag if you know what you are doing! 
+
+LATEX_HEADER           = 
+
+# If the PDF_HYPERLINKS tag is set to YES, the LaTeX that is generated 
+# is prepared for conversion to pdf (using ps2pdf). The pdf file will 
+# contain links (just like the HTML output) instead of page references 
+# This makes the output suitable for online browsing using a pdf viewer. 
+
+PDF_HYPERLINKS         = NO
+
+# If the USE_PDFLATEX tag is set to YES, pdflatex will be used instead of 
+# plain latex in the generated Makefile. Set this option to YES to get a 
+# higher quality PDF documentation. 
+
+USE_PDFLATEX           = NO
+
+# If the LATEX_BATCHMODE tag is set to YES, doxygen will add the \\batchmode. 
+# command to the generated LaTeX files. This will instruct LaTeX to keep 
+# running if errors occur, instead of asking the user for help. 
+# This option is also used when generating formulas in HTML. 
+
+LATEX_BATCHMODE        = NO
+
+#---------------------------------------------------------------------------
+# configuration options related to the RTF output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_RTF tag is set to YES Doxygen will generate RTF output 
+# The RTF output is optimised for Word 97 and may not look very pretty with 
+# other RTF readers or editors.
+
+GENERATE_RTF           = YES
+
+# The RTF_OUTPUT tag is used to specify where the RTF docs will be put. 
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# put in front of it. If left blank `rtf' will be used as the default path. 
+
+RTF_OUTPUT             = rtf
+
+# If the COMPACT_RTF tag is set to YES Doxygen generates more compact 
+# RTF documents. This may be useful for small projects and may help to 
+# save some trees in general. 
+
+COMPACT_RTF            = NO
+
+# If the RTF_HYPERLINKS tag is set to YES, the RTF that is generated 
+# will contain hyperlink fields. The RTF file will 
+# contain links (just like the HTML output) instead of page references. 
+# This makes the output suitable for online browsing using a WORD or other. 
+# programs which support those fields. 
+# Note: wordpad (write) and others do not support links. 
+
+RTF_HYPERLINKS         = NO
+
+# Load stylesheet definitions from file. Syntax is similar to doxygen's 
+# config file, i.e. a series of assigments. You only have to provide 
+# replacements, missing definitions are set to their default value. 
+
+RTF_STYLESHEET_FILE    = 
+
+#---------------------------------------------------------------------------
+# configuration options related to the man page output
+#---------------------------------------------------------------------------
+
+# If the GENERATE_MAN tag is set to YES (the default) Doxygen will 
+# generate man pages 
+
+GENERATE_MAN           = YES
+
+# The MAN_OUTPUT tag is used to specify where the man pages will be put. 
+# If a relative path is entered the value of OUTPUT_DIRECTORY will be 
+# put in front of it. If left blank `man' will be used as the default path. 
+
+MAN_OUTPUT             = man
+
+# The MAN_EXTENSION tag determines the extension that is added to 
+# the generated man pages (default is the subroutine's section .3) 
+
+MAN_EXTENSION          = .3
+
+#---------------------------------------------------------------------------
+# Configuration options related to the preprocessor   
+#---------------------------------------------------------------------------
+
+# If the ENABLE_PREPROCESSING tag is set to YES (the default) Doxygen will 
+# evaluate all C-preprocessor directives found in the sources and include 
+# files. 
+
+ENABLE_PREPROCESSING   = YES
+
+# If the MACRO_EXPANSION tag is set to YES Doxygen will expand all macro 
+# names in the source code. If set to NO (the default) only conditional 
+# compilation will be performed. Macro expansion can be done in a controlled 
+# way by setting EXPAND_ONLY_PREDEF to YES. 
+
+MACRO_EXPANSION        = NO
+
+# If the EXPAND_ONLY_PREDEF and MACRO_EXPANSION tags are both set to YES 
+# then the macro expansion is limited to the macros specified with the 
+# PREDEFINED and EXPAND_AS_PREDEFINED tags. 
+
+EXPAND_ONLY_PREDEF     = NO
+
+# If the SEARCH_INCLUDES tag is set to YES (the default) the includes files 
+# in the INCLUDE_PATH (see below) will be search if a #include is found. 
+
+SEARCH_INCLUDES        = YES
+
+# The INCLUDE_PATH tag can be used to specify one or more directories that 
+# contain include files that are not input files but should be processed by 
+# the preprocessor. 
+
+INCLUDE_PATH           = 
+
+# You can use the INCLUDE_FILE_PATTERNS tag to specify one or more wildcard 
+# patterns (like *.h and *.hpp) to filter out the header-files in the 
+# directories. If left blank, the patterns specified with FILE_PATTERNS will 
+# be used. 
+
+INCLUDE_FILE_PATTERNS  = 
+
+# The PREDEFINED tag can be used to specify one or more macro names that 
+# are defined before the preprocessor is started (similar to the -D option of 
+# gcc). The argument of the tag is a list of macros of the form: name 
+# or name=definition (no spaces). If the definition and the = are 
+# omitted =1 is assumed. 
+
+PREDEFINED             = 
+
+# If the MACRO_EXPANSION and EXPAND_PREDEF_ONLY tags are set to YES then 
+# this tag can be used to specify a list of macro names that should be expanded. 
+# The macro definition that is found in the sources will be used. 
+# Use the PREDEFINED tag if you want to use a different macro definition. 
+
+EXPAND_AS_DEFINED      = 
+
+#---------------------------------------------------------------------------
+# Configuration::addtions related to external references   
+#---------------------------------------------------------------------------
+
+# The TAGFILES tag can be used to specify one or more tagfiles. 
+
+TAGFILES               = 
+
+# When a file name is specified after GENERATE_TAGFILE, doxygen will create 
+# a tag file that is based on the input files it reads. 
+
+GENERATE_TAGFILE       = 
+
+# If the ALLEXTERNALS tag is set to YES all external classes will be listed 
+# in the class index. If set to NO only the inherited external classes 
+# will be listed. 
+
+ALLEXTERNALS           = NO
+
+# The PERL_PATH should be the absolute path and name of the perl script 
+# interpreter (i.e. the result of `which perl'). 
+
+PERL_PATH              = /usr/bin/perl
+
+#---------------------------------------------------------------------------
+# Configuration options related to the dot tool   
+#---------------------------------------------------------------------------
+
+# If you set the HAVE_DOT tag to YES then doxygen will assume the dot tool is 
+# available from the path. This tool is part of Graphviz, a graph visualization 
+# toolkit from AT&T and Lucent Bell Labs. The other options in this section 
+# have no effect if this option is set to NO (the default) 
+
+HAVE_DOT               = NO
+
+# If the CLASS_GRAPH and HAVE_DOT tags are set to YES then doxygen 
+# will generate a graph for each documented class showing the direct and 
+# indirect inheritance relations. Setting this tag to YES will force the 
+# the CLASS_DIAGRAMS tag to NO.
+
+CLASS_GRAPH            = YES
+
+# If the COLLABORATION_GRAPH and HAVE_DOT tags are set to YES then doxygen 
+# will generate a graph for each documented class showing the direct and 
+# indirect implementation dependencies (inheritance, containment, and 
+# class references variables) of the class with other documented classes. 
+
+COLLABORATION_GRAPH    = YES
+
+# If the ENABLE_PREPROCESSING, INCLUDE_GRAPH, and HAVE_DOT tags are set to 
+# YES then doxygen will generate a graph for each documented file showing 
+# the direct and indirect include dependencies of the file with other 
+# documented files. 
+
+INCLUDE_GRAPH          = YES
+
+# If the ENABLE_PREPROCESSING, INCLUDED_BY_GRAPH, and HAVE_DOT tags are set to 
+# YES then doxygen will generate a graph for each documented header file showing 
+# the documented files that directly or indirectly include this file 
+
+INCLUDED_BY_GRAPH      = YES
+
+# If the GRAPHICAL_HIERARCHY and HAVE_DOT tags are set to YES then doxygen 
+# will graphical hierarchy of all classes instead of a textual one. 
+
+GRAPHICAL_HIERARCHY    = YES
+
+# The tag DOT_PATH can be used to specify the path where the dot tool can be 
+# found. If left blank, it is assumed the dot tool can be found on the path. 
+
+DOT_PATH               = 
+
+# The MAX_DOT_GRAPH_WIDTH tag can be used to set the maximum allowed width 
+# (in pixels) of the graphs generated by dot. If a graph becomes larger than 
+# this value, doxygen will try to truncate the graph, so that it fits within 
+# the specified constraint. Beware that most browsers cannot cope with very 
+# large images. 
+
+MAX_DOT_GRAPH_WIDTH    = 1024
+
+# The MAX_DOT_GRAPH_HEIGHT tag can be used to set the maximum allows height 
+# (in pixels) of the graphs generated by dot. If a graph becomes larger than 
+# this value, doxygen will try to truncate the graph, so that it fits within 
+# the specified constraint. Beware that most browsers cannot cope with very 
+# large images. 
+
+MAX_DOT_GRAPH_HEIGHT   = 1024
+
+# If the GENERATE_LEGEND tag is set to YES (the default) Doxygen will 
+# generate a legend page explaining the meaning of the various boxes and 
+# arrows in the dot generated graphs. 
+
+GENERATE_LEGEND        = YES
+
+# If the DOT_CLEANUP tag is set to YES (the default) Doxygen will 
+# remove the intermedate dot files that are used to generate 
+# the various graphs. 
+
+DOT_CLEANUP            = YES
+
+#---------------------------------------------------------------------------
+# Configuration::addtions related to the search engine   
+#---------------------------------------------------------------------------
+
+# The SEARCHENGINE tag specifies whether or not a search engine should be 
+# used. If set to NO the values of all tags below this one will be ignored. 
+
+SEARCHENGINE           = NO
+
+# The CGI_NAME tag should be the name of the CGI script that 
+# starts the search engine (doxysearch) with the correct parameters. 
+# A script with this name will be generated by doxygen. 
+
+CGI_NAME               = search.cgi
+
+# The CGI_URL tag should be the absolute URL to the directory where the 
+# cgi binaries are located. See the documentation of your http daemon for 
+# details. 
+
+CGI_URL                = 
+
+# The DOC_URL tag should be the absolute URL to the directory where the 
+# documentation is located. If left blank the absolute path to the 
+# documentation, with file:// prepended to it, will be used. 
+
+DOC_URL                = 
+
+# The DOC_ABSPATH tag should be the absolute path to the directory where the 
+# documentation is located. If left blank the directory on the local machine 
+# will be used. 
+
+DOC_ABSPATH            = 
+
+# The BIN_ABSPATH tag must point to the directory where the doxysearch binary 
+# is installed. 
+
+BIN_ABSPATH            = /usr/local/bin/
+
+# The EXT_DOC_PATHS tag can be used to specify one or more paths to 
+# documentation generated for other projects. This allows doxysearch to search 
+# the documentation for these projects as well. 
+
+EXT_DOC_PATHS          = 

Makefile.am

@@ -1,6 +1,105 @@
-EXTRA_DIST = mksymlinks.sh
+EXTRA_DIST	= mksymlinks.sh acsite.m4 acconfig.h SimGear.dsp SimGear.dsw
+
+SUBDIRS		= simgear
+
+#
+# Additional all, clean, and distclean rules for additional packages.
+# We can't just include the additional package dirs in SUBDIRS (which 
+# would be nice because there are then problems with make dist
+#
+
+all: 
+	@list='@subdirs@'; \
+	target=`echo $@`; \
+	for subdir in $$list; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    dot_seen=yes; \
+	    local_target="$$target-am"; \
+	  else \
+	    local_target="$$target"; \
+	  fi; \
+	  (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
+	   || case "$$amf" in *=*) exit 1;; *k*) fail=yes;; *) exit 1;; esac; \
+	done
+
+install: 
+	@list='@subdirs@'; \
+	target=`echo $@`; \
+	for subdir in $$list; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    dot_seen=yes; \
+	    local_target="$$target-am"; \
+	  else \
+	    local_target="$$target"; \
+	  fi; \
+	  (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
+	   || case "$$amf" in *=*) exit 1;; *k*) fail=yes;; *) exit 1;; esac; \
+	done
+
+clean: 
+	@list='@subdirs@'; \
+	target=`echo $@`; \
+	for subdir in $$list; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    dot_seen=yes; \
+	    local_target="$$target-am"; \
+	  else \
+	    local_target="$$target"; \
+	  fi; \
+	  (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
+	   || case "$$amf" in *=*) exit 1;; *k*) fail=yes;; *) exit 1;; esac; \
+	done
+
+distclean: 
+	@list='@subdirs@'; \
+	target=`echo $@`; \
+	for subdir in $$list; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    dot_seen=yes; \
+	    local_target="$$target-am"; \
+	  else \
+	    local_target="$$target"; \
+	  fi; \
+	  (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
+	   || case "$$amf" in *=*) exit 1;; *k*) fail=yes;; *) exit 1;; esac; \
+	done
+
+#
+# distclean the associated packages and include them in the dist
+#
 
 dist-hook:
-	tar cf - src/metar | (cd $(distdir); tar xvf -)
+	(cd $(top_srcdir); \
+		$(HOME)/projects/FlightGear-0.7/admin/am2dsp.pl --lib)
+	pwd
+	echo "copying simgear/metar"
+	(cd $(top_srcdir); tar cf - simgear/metar) | (cd $(distdir); tar xvf -)
+	echo "other stuff"
+	@list='@subdirs@'; \
+	target=distclean; \
+	for subdir in $$list; do \
+	  echo "Making $$target in $$subdir"; \
+	  if test "$$subdir" = "."; then \
+	    dot_seen=yes; \
+	    local_target="$$target-am"; \
+	  else \
+	    local_target="$$target"; \
+	  fi; \
+	  (cd $$subdir && $(MAKE) $(AM_MAKEFLAGS) $$local_target) \
+	   || case "$$amf" in *=*) echo "distclean error ignored...";; *k*) fail=yes;; *) echo "distclean error ignored...";; esac; \
+	done
+	(cd $(top_srcdir); tar cf - simgear/metakit) | \
+                (cd $(distdir); tar xvf -)
+	
+
+#
+# Rule to build RPM distribution package
+#
+rpm: dist
+	cp $(PACKAGE)-$(VERSION).tar.gz /usr/src/packages/SOURCES
+	rpm -ba @PACKAGE@.spec
 
-SUBDIRS = src

NEWS

@@ -0,0 +1,103 @@
+New in 0.0.15
+* June 22, 2001
+* Various bug fixes, tweaks, and optimizations.
+* Added a command manager (analogous to the property manager)
+* Better Irix Mips support.
+* Various gcc-3.0 fixes.
+* Various MSVC fixes.
+* Added MSVC project files (automatically generated from the unix
+  automake configuration files.)
+* Removed total size limitation on interpolation table module.
+* Various Cygwin fixes.
+* Added some convenience functions to point3d.
+* Various compiler warning fixes.
+* Added a thread wrapper class (currently only supports pthreads)
+* Added IO routines for a lowlevel, native simgear binary 3d file
+  format optimized for TerraGear terrain.
+* Better endianness checking and support for the binary file
+  read/write routines.
+* Added doxygen comments for all public interface code.  Documentation
+  can be accessed via the SimGear web page.
+* Many FG -> SG name space changes for better consistancy throughout
+  this package.
+* Added property aliases, repeated name tags, and a general xml
+  inclusion facilities.  Many other property manager clean ups
+  following a complete rewrite.
+* Fixed some critical null pointer bugs in property manager.
+* Magnetic variation can now be fetched for any arbitrary location.
+
+New in 0.0.14
+* December 14, 2000
+* Added a module to manage waypoints and routes, calculate bearing and
+  distance to next waypoint, lateral distance off route, etc.
+* Moved some of the basic time management code over from flightgear.
+* Bucket dimensions can be returned in meters
+* Added SOCK_STREAM (TCP) socket support to the networking code.
+* Updated random number generator interface so application can provide
+  it's own seed value as well as use the default time seed.
+* Added a routine to calculate the distance between a point and a line segment.
+* Updates to the property manager and the property list loader/saver.
+* Added an explanation of the rational behind our terrain texture coordinate
+  generation code.
+* Fixed sky dome so that the color at the horizon will always match
+  the specified fog color.
+* Did a fair amount of fg -> sg name space updating (lots left to do.)
+* Added support for KAI C++ on linux.
+* MSVC tweaks.
+* MacOS tweaks.
+* FreeBSD tweaks.
+
+New in 0.0.13
+* September 14, 2000
+* Added support for reading and writing xml files (easyxml)
+* Then updates to property manager and xml code.
+* Update magnetic variation code.
+* Sky code now uses glPushAttrib and glPopAttrib so it plays better with
+  other ssg based apps.
+* MacOS tweaks.
+* MSVC tweaks.
+
+New in 0.0.12
+* July 19, 2000
+* Converted project license from GPL to LGPL.
+* Moved low level IO (socket, file, serial) code over to SimGear.
+* Moved ephemeral code into simgear
+* Moved basic world time code into simgear
+* Added a property manager (registry)
+* Some documentation added.
+
+New in 0.0.11
+* July 3, 2000
+* Replaced gdbm with metakit
+* Added drop in sky (depends on plib)
+* Added spherical course and dist given two points calculations
+* MSVC5 fixes
+* Math/bucket/tiling tweaks from Norman Vine
+
+New in 0.0.7
+* March 29, 2000
+* Added support for RedHat package building contributed by Habibie 
+  <habibie@MailandNews.com>
+* Added gdbm to SimGear.  Many systems will already have gdbm installed so
+  it is only built if it doesn't already exist on the user's platform.
+  gdbm is a set of database routines that use extendible hashing and works
+  similar to the standard UNIX dbm routines.  This guarantees the availability
+  of gdbm to any application that uses SimGear.
+* Optimizations and bullet proofing of magnetic variation code by Norman 
+  Vine and Ed Williams
+
+New in 0.0.6
+* March 27, 2000
+* Added Nima World Magnetic Model 2000 contributed by Ed Williams
+* Fixes for MSVC++
+
+New in 0.0.5
+* March 17, 2000
+* Restructured directory layout to facilitate windows/mac IDE builds.
+
+New in 0.0.4
+* Removed mat3.h and friends (we now use plib's sg lib for these sorts of 
+  things.)
+
+New in 0.0.3
+* Release that conincides with FlightGear-0.7.2

README

@@ -0,0 +1,3 @@
+MSVC5 users:
+
+  Copy simgear/config.h.vc5 to simgear/config.h before building.

README.metakit

@@ -0,0 +1,268 @@
+With the author's permission, SimGear now bundles MetaKit.  
+
+Important build note:
+
+  Later on when you are linking programs with -lmk4 (i.e. FlightGear or one
+  of it's associated programs) if you come across an error similar to the
+  following:
+
+     c++  -Wall -O2 -L/usr/local/lib -o gensimple  gensimple.o libAirports.a
+          -lsgdebug -lsgmisc -lmk4 -lz -lm 
+     /usr/local/lib/libmk4.a(view.o)(.text+0x1c8):view.cpp: multiple definition
+          of `c4_View::~c4_View(void)'
+    libAirports.a(simple.o)(.text$_$_7c4_View+0x0):simple.cxx: first defined
+          here
+    collect2: ld returned 1 exit status
+    make[2]: *** [gensimple] Error 1
+    make[2]: Leaving directory `/home/curt/FlightGear-0.7.7/src/Airports'
+    make[1]: *** [all-recursive] Error 1
+    make[1]: Leaving directory `/home/curt/FlightGear-0.7.7/src'
+    make: *** [all-recursive] Error 1
+
+  Then you need to come back and rebuild Metakit with the -DNDEBUG flag.
+  For unix/cygwin systems, modify the unix/Makefile file and add -DNDEBUG
+  to the CFLAGS line.
+
+Now we return you to the official metakit readme ... :-)
+
+
+The MetaKit Library 2.01                                            March 2000
+==============================================================================
+
+
+WHAT IT IS - MetaKit is an embeddable database which runs on Unix, Windows,
+    Macintosh, and other platforms.  It lets you build applications which
+    store their data efficiently, in a portable way, and which will not need a
+    complex runtime installation.  In terms of the data model, MetaKit takes
+    the middle ground between RDBMS, OODBMS, and flat-file databases - yet it
+    is quite different from each of them.
+
+WHAT IT ISN'T - MetaKit is not: 1) multi-user/-threading, 2) scalable to
+    gigabytes, 3) proprietary software, 4) full of bugs, 5) just a toy.
+
+TECHNOLOGY - Everything is stored variable-sized yet with efficient positional
+    row access.  Changing an existing datafile structure is as simple as re-
+    opening it with that new structure.  All changes are transacted.  You can
+    mix and match software written in C++, Python, and Tcl.  Things can't get
+    much more flexible...
+
+CORE - The Metakit core library is written in C++.  It has a code footprint of
+    just over 100 Kb on Windows.  It can be used as DLL, or linked statically.
+    Debug builds include extensive assertion checks to catch problems early.
+
+PYTHON - The binding for Python is called "Mk4py".  It uses SCXX by Gordon
+    McMillan as C++ glue interface.  The source is in directory "python/".
+
+TCL/TK - The MK extension for Tcl is called "Mk4tcl".  It is being used in a
+    number of commercial projects, for in-house use as well as in commercially
+    distributed products.  The source is in directory "tcl/".
+
+LICENSE AND SUPPORT - MetaKit 2.01 is distributed as open source software (the
+    X/MIT-style license is at the end of this document).  Commercial support
+    is available through an Enterprise License, see the URL mentioned below.
+
+DOCUMENTATION - All documentation uses HTML.  The main page is "MetaKit.html",
+    which leads to the rest of the documentation in the "doc/" directory.
+
+WEBSITE URLS - The main pages on the world wide web, for news and downloads:
+    Homepage:       http://www.equi4.com/metakit/
+    Python news:    http://www.equi4.com/metakit/python.html
+    Tcl/Tk news:    http://www.equi4.com/metakit/tcl.html
+    License info:   http://www.equi4.com/metakit/license.html
+    Contact info:   http://www.equi4.com/contact.html
+
+
+INSTALLATION
+============
+
+Starting with this release, all platform builds and language bindings are now
+designed to work from a single common "builds/" directory.  It turns out to
+be impossible to keep build side-effects limited to *just* this directory
+(CodeWarrior can't be told where to place its temp data, and Visual C++ still
+alters a few files next to the project ".dsw" file, to name two offenders).
+
+UNIX
+
+    It is no longer advised to build the Unix code in the "unix/" directory.
+    Instead, you should perform the following steps:
+        % cd builds
+        % ../unix/configure
+        % make
+        % make test
+    And optionally (this only installs the core lib, not script extensions):
+        % make install
+
+    By switching to the "builds/" directory, you will keep the distribution
+    directory tree 100% unaltered.  All changes are made in this subdir, and
+    all final build results are left behind in this same subdir.
+
+    Nastiness: if you build Mk4tcl, please do a "make Mk4tcl.so" as well.
+    And if you intend to create the Python extension, do a "make Mk4py.so".
+    The "libmk4tcl.so.0.0.0" and "libMk4py.so.0.0.0" targets are bogus ones.
+
+    You will probably have to make changes in the makefile to locate the
+    proper includes and libs for Python (Tcl has been fixed, see "--with-tcl).
+    You probably only need to adjust "CXX_SWITCHES_PY" to find the headers.
+
+    To build with STL containers and strings, you can do the following:
+        make CXXFLAGS='-Dq4_STD' test   # add -O3 etc, as needed
+    This passes the test suite on Linux RedHat 5.2 with gcc 2.95-2.
+
+    See below for some platform-specific build notes.
+
+WINDOWS
+
+    There is a "win/" directory which contains subdirectories for a number of
+    compiler systems.  MetaKit has been built with many different compilers
+    in the past (Microsoft, Borland, Watcom, Symantec, Metrowerks, Optima),
+    but to preserve my sanity (there are 12 configurations for MSVC6 alone!),
+    I am limiting myself to MSVC6, MWCW5, Borland C++ Builder 4, and Cygwin.
+
+    The MS Visual C++ 6.0 project is "win/msvc60/mksrc.dsw", with subprojects
+    for the C++ demo (mkdemo), building dll's (mkdll), static libs (mklib),
+    regression tests (mktest), as well as Tcl (mktcl) and Python (mkpython).
+    It has been set up to place all intermediate files and final results in
+    the "builds/" subdirectory, even though you'll launch it from "win/".
+
+    To build with STL containers and strings under MSVC, define "q4_STD".
+    To build with MFC containers and strings under MSVC, define "q4_MFC".
+
+    The Metrowerks Codewarrior project is in the "mac/" directory, and can be
+    used to build both Mac and Windows versions (on either Mac *or* Windows).
+    The core libraries are built with "mac/cw5.mcp", demos / tests are built
+    with "cw5apps.mcp", Tcl is "cw5tcl.mcp", and Python is "cw5python.mcp".
+
+    The Borland C++ Builder projects have not yet been incorporated in this
+    release, but the "KitViewer" application is an example of how to use BCB.
+
+    The Cygwin build (B20.1 / gcc 2.95.2) is different, because it uses the
+    unix autoconf system, and must be launched as described above for UNIX.
+    I have upgraded to the latest development of libtool to be able to build
+    DLL's with Cygwin.  You can build the "-mno-cygwin" version by editing
+    the Makefile by hand and adding that option to CXXFLAGS.
+
+    Rob Bloodgood adds that the following GCC options are for maximum code
+    efficiency on x86 hardware: "-O2 -m486 -malign-loops=2 -malign-jumps=2".
+    I have not yet tried this myself, but am passing on the tip.
+
+MACINTOSH
+
+    The Mac version requires Metrowerks CodeWarrior 5.  See the info above
+    in the Windows section (MWCW is multi-platform).  The projects are all
+    located in the "mac/" folder, which is also where MWCW will place its own
+    "... Data" folders with intermediate results.  As with all other setups,
+    final results are made to end up in the "builds/" directory.
+
+    Static 68K builds appear to work fine, the 68K CFM variants will need
+    some more work (I couldn't get the libraries to export their symbols).
+
+
+PLATFORM-SPECIFIC NOTES
+=======================
+
+* Linux RH 5.2 / gcc 2.95.2
+
+    Builds with gcc 2.95.2 work out of the box.  The Tcl extension ends up as
+    ".libs/libmk4tcl.so.0.0.0" (to please libtool), and should be renamed to
+    "Mk4tcl.so".  Similarly, ".libs/libMk4py.so.0.0.0" is in fact the Python
+    extension, and *must* be renamed to "Mk4py.so" to call it from Python.
+
+    The core MK libs end up as ".libs/libmk4.a" and ".libs/libmk4.so.0.0.0".
+
+* Solaris 2.6 / gcc 2.8.1
+
+    The Solaris builds are nasty for several reasons:
+
+    - I do not own such a machine, and often have to make arrangements
+      (or fight limited space on one of the machines I can telnet to).
+    - The gcc 2.8.1 optimizer appears to be buggy, I have had to turn off
+      the default "-O3" flag to prevent compiler crashes (several files).
+      This problems appears to be resolved with gcc 2.95.
+    - Locking on Solaris (especially w.r.t NFS) remains a mystery to me.
+      The Tcl and Python extensions both use locking (the core not yet).
+      See tcl/Mk4tcl.cpp around line 520, and python/PyStorage.cpp around
+      line 80 for details.  It's all pretty messy, and not 100% correct.
+
+    Despite this, I'm doing my best to resolve these issues.  Having a solid
+    build of the core *and* of Tcl / Python extensions is quite important.
+
+* Other Unix systems
+
+    No further notes, though many systems will build fine out of the box.
+
+* Windows
+
+    MSVC 6 builds MK as static lib and as DLL (universal config, I have not
+    yet created build versions with MFC or STL, mainly because MK can now be
+    used in all contexts regardless of how it was built).  The Python and Tcl
+    extensions build as dynamic extensions (a static build is easy to add).
+
+    MWCW 5 builds MK as static lib and as DLL (interestingly enough, the DLL
+    is slightly smaller than MSVC 6 - 102 vs 108 Kb - when their runtimes are
+    linked in dynamically as well).  I have not added Win builds for Tcl or
+    Python, since MSVC 6 has those already.
+
+    Cygwin B20.1, with gcc 2.95.2 ugrade, also builds MK as static lib and as
+    DLL.  Both "pure" Cygwin (i.e. requiring cygwin1.dll) and mingw32 (using
+    the -mno-cygwin flag) build, but there are some hairy include issues when
+    it comes to choosing the right locking model for Tcl and Python.  These
+    issues have not been resolved fully.
+
+* Macintosh
+
+    MWCW 5 builds PPC shared libs, PPC static libs, and 68K static libraries.
+
+    Building 68K CFM libraries leads to a "MetaKit 68K.shlb" which comes out
+    of the linker without errors, but the result does not seem to have any
+    export symbols defined (despite the fact that the library is over 200 K).
+    Because of that, I've been unable to build apps or Mk4tcl/Mk4py so far.
+
+    The other three configurations build, but for some reason MK's regression
+    test stops at L03 (everything up to that point looks ok, i.e. over 90%).
+
+    The Mk4tcl PPC extension appears to work (quick manual test), and so does
+    the Python extension, "Mk4py.PPC.slb".  I have not yet given these two
+    a serious workout, hoping to have a basic test harness in place soon.
+
+* VMS, BeOS, ...
+
+    No news yet, please report your findings with any other platform builds.
+
+
+WHAT'S MISSING HERE
+===================
+
+    - a section on basic concepts (or maybe it doesn't belong here?)
+    - a section on getting started (C++, Python, Tcl all differ - point to
+      the respective intro pages)
+    - maybe a small sample for each of C++ / Tcl / Python, to give an idea
+    - mention TclKit, scripted docs (WiKit/Tequila?), VFS?
+    - I forgot... please tell me :)
+
+
+LICENSE AND COPYRIGHT STATEMENT
+===============================
+
+Copyright (c) 1996-2000 Jean-Claude Wippler
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+the rights to use, copy, modify, merge, publish, distribute, sublicense,
+and/or sell copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.
+
+
+==============================================================================
+-- Jean-Claude Wippler <jcw@equi4.com>

SimGear.dsw

@@ -0,0 +1,29 @@
+Microsoft Developer Studio Workspace File, Format Version 6.00
+# WARNING: DO NOT EDIT OR DELETE THIS WORKSPACE FILE!
+
+###############################################################################
+
+Project: "SimGear"=".\SimGear.dsp" - Package Owner=<4>
+
+Package=<5>
+{{{
+}}}
+
+Package=<4>
+{{{
+}}}
+
+###############################################################################
+
+Global:
+
+Package=<5>
+{{{
+}}}
+
+Package=<3>
+{{{
+}}}
+
+###############################################################################
+

SimGear.spec.in

@@ -0,0 +1,76 @@
+%define ver	@VERSION@
+%define rel	1
+%define prefix	/usr
+
+Summary:	Simulator Construction Gear.
+Name:		@PACKAGE@
+Version:	%ver
+Release:	%rel
+Copyright:	LGPL
+Group:		Libraries/Graphics
+Source:		%{name}-%{version}.tar.gz
+#URL:		
+BuildRoot:	/tmp/%{name}-%{version}-%{rel}-root
+Packager:	Fill In As You Wish
+Docdir:		%{prefix}/doc
+
+%description
+This package contains a tools and libraries useful for constructing 
+simulation and visualization applications such as FlightGear or TerraGear. 
+
+Authors:
+	N/A
+
+%prep
+%setup -n %{name}-%{version}
+
+
+%build
+# Needed for snapshot releases.
+if [ ! -f configure ]; then
+	CFLAGS="$RPM_OPT_FLAGS" ./autogen.sh --prefix=%prefix
+else
+	CFLAGS="$RPM_OPT_FLAGS" ./configure --prefix=%prefix
+fi
+
+if [ "$SMP" != "" ]; then
+	JSMP	= '"MAKE=make -k -j $SMP"'
+fi
+
+make ${JSMP};
+
+
+%install
+[ -d ${RPM_BUILD_ROOT} ] && rm -rf ${RPM_BUILD_ROOT}
+
+make prefix=${RPM_BUILD_ROOT}%{prefix} install
+
+#
+# Generating file lists and store them in file-lists
+# Starting with the directory listings
+#
+find ${RPM_BUILD_ROOT}%{prefix}/{bin,include,lib} -type d | sed "s#^${RPM_BUILD_ROOT}#\%attr (-\,root\,root) \%dir #" > file-lists
+%{?ETCDR:find ${RPM_BUILD_ROOT}%{!?SYSCF:%{prefix}}/etc -type d | sed "s#^${RPM_BUILD_ROOT}#\%attr (-\,root\,root) \%dir #" >> file-lists}
+
+#
+# Then, the file listings
+#
+echo "%defattr (-, root, root)" >> file-lists
+%{?ETCDR:find ${RPM_BUILD_ROOT}%{!?SYSCF:%{prefix}}/etc/%{name}.conf -type f | sed -e "s#^${RPM_BUILD_ROOT}#%config #g" >> file-lists}
+find ${RPM_BUILD_ROOT}%{prefix} -type f | sed -e "s#^${RPM_BUILD_ROOT}##g" >> file-lists
+
+
+%clean
+(cd ..; rm -rf %{name}-%{version} ${RPM_BUILD_ROOT})
+
+
+%files -f file-lists
+%defattr (-, root, root)
+%doc AUTHORS
+%doc COPYING
+%doc ChangeLog
+%doc INSTALL
+%doc NEWS
+%doc README
+%doc %{name}.spec.in
+

Thanks

@@ -0,0 +1,184 @@
+A very special thanks is due to the following people and groups.
+
+Note: as hard as we've tried, it is impossible to perfectly maintain
+this file.  If you are aware of someone who you think should be
+included here, PLEASE let me know.  Projects like this are made
+possible only by the help and hard work of others.  I want to properly
+credit everyone who has contributed to this project.
+
+
+Raul Alonzo <amil@las.es>
+  Mr. Alonzo is the author of Ssystem and provided his kind permission 
+  for using the moon texture. I also used parts of his code as a template
+  when adding the texture.  Ssystem Homepage can be found at:
+  http://www1.las.es/~amil/ssystem
+
+
+Paul Bleisch <pbleisch@acm.org>
+  Paul redid the "debug" system so that it would be much more flexible,
+  so it could be easily disabled for production system, and so that 
+  messages for certain subsystems could be selectively enabled.
+  Also contributed a first stab at a config file/command line parsing
+  system.
+
+
+Bernie Bright <bbright@c031.aone.net.au>
+  Many C++ style, usage, and implementation improvements.  
+  STL portability, tons o' stuff. :-)
+  Currently trying to get a BeOS port together but life keeps getting 
+  in the way!
+
+
+Gene Buckle <geneb@deltasoft.com>
+  Gene has done a lot of work getting FG to compile with the MSVC++
+  compiler.  Also, he has pushed, proded, and bugged me endlessly to
+  do my stuff right.  (I mean that in a good way, because sometimes
+  when the little nudge in the right direction isn't working, I need
+  a good hard shove.) :-)
+
+
+John Check <j4strngs@rockfish.net>
+  Cloud textures
+
+
+Jean-Francois Doue
+  Vector 2D, 3D, 4D and Matrix 3D and 4D inlined C++ classes.  (Based on
+  Graphics Gems IV ed. Paul S. Heckbert)
+  http://www.animats.com/simpleppp/ftp/public_html/topics/developers.html
+
+
+Bruce Finney <bfinney@gte.net>
+  MSVC5 compatibility.
+
+
+Jean-loup Gailly and Mark Adler <zlib@gzip.org>
+  Authors of the zlib library.  Used for on-the-fly compression and
+  decompression routines.
+  http://www.cdrom.com/pub/infozip/zlib/
+
+
+Thomas Gellekum <tg@ihf.rwth-aachen.de>
+  Changes and updates for compiling on FreeBSD
+
+
+Habibie <habibie@MailandNews.com>
+  RedHat package building changes for SimGear.
+
+
+Bruce Jackson of NASA <e.b.jackson@larc.nasa.gov> 
+  Developed the LaRCsim code under funding by NASA which we use to provide
+  the flight model. Bruce has patiently answered my many, many questions.
+  http://dcb.larc.nasa.gov/www/DCBStaff/ebj/ebj.html
+
+
+Richard Kaszeta <bofh@me.umn.edu>
+  Contributed screen buffer to ppm screen shot routine.
+  Rich has also helped in the early development of the Flight Gear "altitude 
+  hold autopilot module" by teaching Curt Olson the basics of Control Theory 
+  and helping him code and debug early versions. Curt's "Boss" Bob Hain
+  also contributed <bob@me.umn.edu>.  Further details available at:
+  http://www.menet.umn.edu/~curt/fgfs/Docs/Autopilot/AltitudeHold/AltitudeHold.html
+  Rich's Homepage: http://www.menet.umn.edu/~kaszeta
+
+
+Tom Knienieder <tom@knienieder.com>
+  Ported Steve's Audio library first to OpenBSD and IRIX and
+  after that also to Win32
+
+
+David Megginson <david@megginson.com>
+  SimGear property manager/registry
+
+
+Curt Olson <curt@flightgear.org>
+  Curt is responsible for overall project and source code management.
+  He has his hands in many of the areas.
+
+
+Petter Reinholdtsen <pere@games.no>
+  Incorporated the Gnu automake/autoconf system (with libtool).
+  This should streamline and standardize the build process for all
+  Unix-like platforms.  It should have little effect on IDE type 
+  environments since the don't use the Unix make system.
+
+
+Paul Schlyter <pausch@saaf.se>  
+  Mr. Schlyter provided Durk Talsma with all the information 
+  he needed to write the astro code. Mr. S. is also willing 
+  to answer astro-related questions whenever one needs to.
+  http://welcome.to/pausch
+
+
+Durk Talsma <d.talsma@chello.nl>
+  Accurate Sun, Moon, and Planets. 
+  Sun changes color based on position in sky.
+  Moon has correct phase and blends well into the sky.
+  Planets are correctly positioned and have proper magnitude.
+  Added time zone support in the SGTime class.
+  Help with time functions, gui, and other misc stuff.
+  http://people.a2000.nl/dtals
+
+
+Mark Vallevand <Mark.Vallevand@UNISYS.com>
+  Contributed some METAR parsing code.
+  Contributed some win32 screen printing routines.
+
+
+Gary R. Van Sickle <tiberius@braemarinc.com>
+  Contributed some initial GameGLUT support and other fixes.
+  Has done some interesting preliminary work on a binary file format
+  http://www.woodsoup.org/projs/ORKiD/fgfs.htm
+
+  Has set up a 'Cygwin Tips' site that has been very helpful to many 
+  people in getting a Cygwin Unix-on-Windows build environment set up
+  so they can build FG effectively. 
+  http://www.woodsoup.org/projs/ORKiD/cygwin.htm
+
+
+Norman Vine <nhv@yahoo.com>
+  Provided more than uncountable URL's to the "FlightGear Community".
+  Many performance optimizations throughout the code.  
+  Lots of windoze related contributions.
+  Contributed wgs84 distance and course routines.
+  Contributed a great circle route autopilot mode based on wgs84 routines.
+
+
+Ed Williams <Ed_Williams@compuserve.com>
+  Contributed magnetic variation code (impliments Nima WMM 2000)
+  We've also borrowed from Ed's wonderful aviation formulary at various
+  times as well.
+  http://www.best.com/~williams/index.html
+
+
+Jean-Claude Wippler <jcw@equi4.com>
+  Author of MetaKit - a portable, embeddible database with a portable
+  data file format.  This software is not GPL'd but the author is kindly
+  allowing us to bundle MetaKit with our code.  MetaKit has a liberal
+  X/MIT-style license.  Please see the following URL for more info:
+  http://www.equi4.com/metakit
+
+
+WoodSoup Project  http://www.woodsoup.org
+  Provided computing resources and services so that the Flight Gear 
+  project could have real home.  This includes, web services, 
+  ftp services, shell accounts, email lists, dns services, etc.
+
+
+Robert Allan Zeh <raz@cmg.FCNBD.COM>
+  Helped me tremendously in figuring out the Cygnus win32 compiler and
+  how to link with .dll's.  With out him the first runable win32
+  version of FG would have been impossible.
+
+
+
+NOTE:
+----
+
+THIS DOCUMENT WAS INITIALLY WRITTEN BY 
+Curt L. Olson  <curt@flightgear.org>
+
+
+05 Jul 2000 Removed non-SimGear entries (CLO)
+
+08 Mar 2000 CONTENTS RESEARCHED AND UPDATED by 
+            Oliver Delise  <delise@mail.isis.de>

VERSION.in

@@ -1 +0,0 @@
-@VERSION@

acconfig.h

@@ -141,6 +141,9 @@
 /* Define if your struct stat has st_rdev.  */
 #undef HAVE_ST_RDEV
 
+/* Define if you have the stdint.h include.  */
+#undef HAVE_STDINT_H
+
 /* Define if you have the strftime function.  */
 #undef HAVE_STRFTIME
 
@@ -181,6 +184,12 @@
 /* Define if you have the wait3 system call.  */
 #undef HAVE_WAIT3
 
+/* Define if you have gdbm installed system wide.  */
+/* #undef HAVE_GDBM */
+
+/* Define if you have zlib installed system wide.  */
+#undef HAVE_ZLIB
+
 /* Define as __inline if that's what the C compiler calls it.  */
 #undef inline
 

aclocal.m4

@@ -1,7 +1,7 @@
-dnl aclocal.m4 generated automatically by aclocal 1.3
+dnl aclocal.m4 generated automatically by aclocal 1.4
 
-dnl Copyright (C) 1994, 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
-dnl This Makefile.in is free software; the Free Software Foundation
+dnl Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
@@ -20,7 +20,7 @@ dnl Usage:
 dnl AM_INIT_AUTOMAKE(package,version, [no-define])
 
 AC_DEFUN(AM_INIT_AUTOMAKE,
-[AC_REQUIRE([AM_PROG_INSTALL])
+[AC_REQUIRE([AC_PROG_INSTALL])
 PACKAGE=[$1]
 AC_SUBST(PACKAGE)
 VERSION=[$2]
@@ -30,8 +30,8 @@ if test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status; then
   AC_MSG_ERROR([source directory already configured; run "make distclean" there first])
 fi
 ifelse([$3],,
-AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE")
-AC_DEFINE_UNQUOTED(VERSION, "$VERSION"))
+AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
+AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package]))
 AC_REQUIRE([AM_SANITY_CHECK])
 AC_REQUIRE([AC_ARG_PROGRAM])
 dnl FIXME This is truly gross.
@@ -43,15 +43,6 @@ AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
 AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
 AC_REQUIRE([AC_PROG_MAKE_SET])])
 
-
-# serial 1
-
-AC_DEFUN(AM_PROG_INSTALL,
-[AC_REQUIRE([AC_PROG_INSTALL])
-test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL_PROGRAM}'
-AC_SUBST(INSTALL_SCRIPT)dnl
-])
-
 #
 # Check to make sure that the build environment is sane.
 #

acsite.m4

@@ -392,3 +392,24 @@ if test "$have_timezone" = no; then
          AC_MSG_RESULT(no))
 fi
 ])dnl
+
+## AC_BZ_SET_COMPILER: Addition by Theodore Papadopoulo
+## Patch by Jim McKelvey: change sed -e 's/ /@/g' to sed -e 's/ /@/'
+AC_DEFUN(AC_SG_SET_COMPILER,
+  [cxxwith=`echo $1 | sed -e 's/ /@/'`
+   case "$cxxwith" in
+     *:*@*)                 # Full initialization syntax
+       CXX=`echo "$cxxwith" | sed  -n -e 's/.*:\(.*\)@.*/\1/p'`
+       CXXFLAGS=`echo "$cxxwith" | sed  -n -e 's/.*:.*@\(.*\)/\1/p'`
+     ;;
+     *:*)                   # Simple initialization syntax
+       CXX=`echo "$cxxwith" | sed  -n -e 's/.*:\(.*\)/\1/p'`
+       CXXFLAGS=$3
+     ;;
+     *)                     # Default values
+       CXX=$2
+       CXXFLAGS=$3
+       CC="$2 --c"
+##       CFLAGS=
+     ;;
+   esac])

configure.in

@@ -3,19 +3,46 @@ dnl working configure script.
 dnl
 dnl $Id$
 
-AC_INIT(src/bucket/newbucket.cxx)
+AC_INIT(simgear/bucket/newbucket.cxx)
 
 dnl Initialize the automake stuff
-AM_INIT_AUTOMAKE(SimGear, 0.0.1)
+AM_INIT_AUTOMAKE(SimGear, 0.0.15)
+
+dnl Specify KAI C++ compiler and flags.
+dnl Borrowed with slight modification from blitz distribution.
+AC_ARG_WITH(cxx,
+  [  --with-cxx=COMPILER[:name-flags] set options for COMPILER (KCC)],
+  [case "$withval" in
+    KCC*)    # KAI C++ http://www.kai.com/
+      echo "Configuring for KAI C++"
+      AC_SG_SET_COMPILER($withval,"KCC","--restrict --strict_warnings")
+      CXX_OPTIMIZE_FLAGS=="+K3 -O3"
+      CXX_DEBUG_FLAGS="-g +K0"
+    ;;
+  esac
+])
+
+echo CXX = $CXX
+echo CC = $CC
 
 dnl Checks for programs.
 AC_PROG_MAKE_SET
 AC_PROG_CC
+AC_PROG_CPP
 AC_PROG_CXX
 AC_PROG_RANLIB
 AC_PROG_INSTALL
 AC_PROG_LN_S
 
+AR="ar"
+OS=`uname -s`
+if test "$OS" = "IRIX" -o "$OS" = "IRIX64"; then
+    if test "$CXX" = "CC"; then
+        AR="CC -ar"
+        AC_SUBST(AR)
+    fi
+fi
+
 if echo $includedir | egrep "simgear$" > /dev/null; then
     echo "includedir is" $includedir "libdir is" $libdir
 else
@@ -24,7 +51,6 @@ else
 fi
 
 
-dnl Specify if we want logging (testing build) or not (release build)
 # set logging default value
 # with_logging=yes
 AC_ARG_WITH(logging, [  --with-logging          Include logging output (default)])
@@ -37,7 +63,7 @@ AC_ARG_WITH(efence, [  --with-efence           Specify if we are building with "
 
 if test "x$with_efence" = "xyes" ; then
     echo "Building with efence"
-    LIBS= "$LIBS -lefence"
+    LIBS="$LIBS -lefence"
 fi
 
 dnl Check for MS Windows environment
@@ -78,6 +104,15 @@ AC_CHECK_LIB(m, cos)
 
 base_LIBS="$LIBS"
 
+dnl Thread related checks
+AC_CHECK_LIB(pthread, pthread_exit)
+AC_CHECK_HEADER(pthread.h)
+if test "x$ac_cv_lib_pthread_pthread_exit" = "xyes" -a "x$ac_cv_header_pthread_h" = "xyes"; then
+    CXXFLAGS="$CXXFLAGS -D_REENTRANT"
+    CFLAGS="$CFLAGS -D_REENTRANT"
+fi
+AM_CONDITIONAL(HAVE_THREADS, test "x$ac_cv_lib_pthread_pthread_exit" = "xyes" -a "x$ac_cv_header_pthread_h" = "xyes")
+
 AC_CHECK_LIB(socket, socket)
 AC_CHECK_LIB(X11, XCreateWindow)
 AC_CHECK_LIB(Xext, XShmCreateImage)
@@ -196,9 +231,32 @@ if test "x$ac_cv_header_plib_pu_h" != "xyes"; then
     exit
 fi
 
+# dnl Check for system installed gdbm
+# AC_CHECK_HEADER(gdbm.h)
+# if test "x$ac_cv_header_gdbm_h" = "xyes"; then
+#     AC_DEFINE( HAVE_GDBM )
+# else
+#     echo "no gdbm found, configuring and building."
+# fi
+# AM_CONDITIONAL(HAVE_GDBM, test "x$ac_cv_header_gdbm_h" = "xyes" )
+
+dnl Check for system installed metakit
+AC_CHECK_HEADER(mk4.h)
+if test "x$ac_cv_header_mk4_h" != "xyes"; then
+    echo "no metakit found, configuring and building."
+    # Run configure in the metakit subdir
+    AC_CONFIG_SUBDIRS( simgear/metakit/unix )
+fi
+AM_CONDITIONAL(HAVE_METAKIT, test "x$ac_cv_header_mk4_h" = "xyes" )
+
+
+dnl Specify if we want logging (testing build) or not (release build)
+
 dnl Check for system installed zlib
 AC_CHECK_HEADER(zlib.h)
-if test "x$ac_cv_header_zlib_h" != "xyes"; then
+if test "x$ac_cv_header_zlib_h" = "xyes"; then
+    AC_DEFINE( HAVE_ZLIB )
+else
     echo "no zlib found, building."
 fi
 AM_CONDITIONAL(HAVE_ZLIB, test "x$ac_cv_header_zlib_h" = "xyes" )
@@ -206,8 +264,12 @@ AM_CONDITIONAL(HAVE_ZLIB, test "x$ac_cv_header_zlib_h" = "xyes" )
 dnl Checks for header files.
 AC_HEADER_STDC
 AC_CHECK_HEADERS( \
-	fcntl.h getopt.h malloc.h memory.h stdlib.h sys/param.h sys/stat.h \
-        sys/time.h sys/timeb.h unistd.h windows.h winbase.h values.h )
+	fcntl.h getopt.h malloc.h memory.h stdint.h stdlib.h sys/param.h \
+	sys/stat.h sys/time.h sys/timeb.h unistd.h windows.h winbase.h values.h )
+
+if test "x$ac_cv_header_stdint_h" = "xyes"; then
+    AC_DEFINE( HAVE_STDINT_H )
+fi
 
 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_C_CONST
@@ -221,24 +283,37 @@ AC_FUNC_VPRINTF
 AC_CHECK_FUNCS( ftime gettimeofday timegm memcpy bcopy mktime strstr rand \
 	random setitimer getitimer signal GetLocalTime rint getrusage )
 
-AM_CONFIG_HEADER(src/include/config.h)
+AM_CONFIG_HEADER(simgear/simgear_config.h)
 
 AC_OUTPUT( \
-	VERSION \
 	Makefile \
-	src/Makefile \
-	src/include/Makefile \
-	src/bucket/Makefile \
-	src/debug/Makefile \
-	src/math/Makefile \
-	src/misc/Makefile \
-	src/screen/Makefile \
-	src/serial/Makefile \
-	src/xgl/Makefile \
-	src/zlib/Makefile \
+	SimGear.spec \
+	simgear/Makefile \
+	simgear/version.h \
+	simgear/bucket/Makefile \
+	simgear/debug/Makefile \
+	simgear/ephemeris/Makefile \
+	simgear/io/Makefile \
+	simgear/magvar/Makefile \
+	simgear/math/Makefile \
+	simgear/metar/Makefile \
+	simgear/misc/Makefile \
+	simgear/route/Makefile \
+	simgear/screen/Makefile \
+	simgear/serial/Makefile \
+	simgear/sky/Makefile \
+	simgear/threads/Makefile \
+	simgear/timing/Makefile \
+	simgear/xgl/Makefile \
+	simgear/xml/Makefile \
+	simgear/zlib/Makefile \
 )
 
-AC_OUTPUT_COMMANDS([./mksymlinks.sh])
+AC_OUTPUT_COMMANDS([
+#	if test "x$ac_cv_header_windows_h" = "xyes" ; then
+#		cp simgear/gdbm/autoconf.h.cygwin32 simgear/gdbm/autoconf.h
+#	fi
+])
 
 echo ""
 echo "Configure Summary"
@@ -257,3 +332,27 @@ if test "x$with_efence" != "x"; then
 else
     echo "Electric fence: no"
 fi
+
+# if test "x$ac_cv_header_gdbm_h" != "xyes"; then
+#    echo "Building gdbm"
+# fi
+
+if test "x$ac_cv_header_mk4_h" != "xyes"; then
+   echo "Building metakit"
+fi
+
+if test "x$ac_cv_header_zlib_h" != "xyes"; then
+   echo "Building zlib"
+fi
+
+if test "x$ac_cv_lib_pthread_pthread_exit" = "xyes" -a "x$ac_cv_header_pthread_h" = "xyes"; then
+   echo "Threads: pthread lib found."
+else
+   echo "Threads: no threads (pthread lib not found.)"
+fi
+
+if test "$OS" = "IRIX" -o "$OS" = "IRIX64"; then
+    if test "$CXX" = "CC"; then
+        echo "\nRemember to run: sh ../FlightGear/irix-hack.sh!\07\n"
+    fi
+fi

mksymlinks.sh

@@ -20,6 +20,7 @@ ln -s ../include/compiler.h src/simgear/compiler.h
 ln -s ../include/constants.h src/simgear/constants.h
 ln -s ../include/fg_traits.hxx src/simgear/fg_traits.hxx
 ln -s ../include/fg_zlib.h src/simgear/fg_zlib.h
+ln -s ../include/version.h src/simgear/version.h
 
 ln -s ../../bucket/newbucket.hxx src/simgear/bucket/newbucket.hxx
 
@@ -28,7 +29,6 @@ ln -s ../../debug/logstream.hxx src/simgear/debug/logstream.hxx
 
 ln -s ../../math/fg_memory.h src/simgear/math/fg_memory.h
 ln -s ../../math/fg_types.hxx src/simgear/math/fg_types.hxx
-ln -s ../../math/mat3.h src/simgear/math/mat3.h
 ln -s ../../math/point3d.hxx src/simgear/math/point3d.hxx
 ln -s ../../math/polar3d.hxx src/simgear/math/polar3d.hxx
 
@@ -37,3 +37,6 @@ ln -s ../../misc/fgstream.hxx src/simgear/misc/fgstream.hxx
 ln -s ../../misc/zfstream.hxx src/simgear/misc/zfstream.hxx
 
 ln -s ../../xgl/xgl.h src/simgear/xgl/xgl.h
+
+ln -s ../../zlib/zlib.h src/simgear/zlib/zlib.h
+ln -s ../../zlib/zconf.h src/simgear/zlib/zconf.h

simgear/Makefile.am

@@ -4,24 +4,48 @@ else
 SERIAL_DIRS =
 endif
 
+# if HAVE_GDBM
+# GDBM_DIRS =
+# else
+# GDBM_DIRS = gdbm
+# endif
+
 if HAVE_ZLIB
 ZLIB_DIRS =
 else
 ZLIB_DIRS = zlib
 endif
 
-METAR_DIRS =
-# METAR_DIRS = metar
+if HAVE_THREADS
+SGTHREAD_DIR = threads
+else
+SGTHREAD_DIR = 
+endif
+
+# METAR_DIRS =
+METAR_DIRS = metar
+
+EXTRA_DIST = version.h.in
+
+include_HEADERS = \
+	compiler.h constants.h sg_inlines.h sg_traits.hxx sg_zlib.h version.h
 
 SUBDIRS = \
-	include \
-	bucket \
+	$(ZLIB_DIRS) \
+	xml \
 	debug \
+	misc \
+	bucket \
+	ephemeris \
+	io \
+	magvar \
 	math \
 	$(METAR_DIRS) \
-	misc \
+	route \
 	screen \
 	$(SERIAL_DIRS) \
-	xgl \
-	$(ZLIB_DIRS)
+	sky \
+	$(SGTHREAD_DIR) \
+	timing \
+	xgl
 

simgear/bucket/Makefile.am

@@ -14,4 +14,4 @@ libsgbucket_a_SOURCES = newbucket.cxx
 # 	$(top_builddir)/bucket/libsgbucket.a \
 # 	$(top_builddir)/misc/libsgmisc.a
 
-INCLUDES += -I$(top_builddir)/src
+INCLUDES += -I$(top_srcdir)

simgear/bucket/newbucket.cxx

@@ -5,38 +5,135 @@
  *
  * Copyright (C) 1999  Curtis L. Olson - curt@flightgear.org
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
 
 
-#ifdef HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
-
 #include <math.h>
 
-#include <simgear/misc/fgpath.hxx>
+#include <simgear/misc/sg_path.hxx>
 
 #include "newbucket.hxx"
 
 
+// default constructor
+SGBucket::SGBucket() {
+}
+
+
+// constructor for specified location
+SGBucket::SGBucket(const double dlon, const double dlat) {
+    set_bucket(dlon, dlat);
+}
+
+
+// create an impossible bucket if false
+SGBucket::SGBucket(const bool is_good) {
+    set_bucket(0.0, 0.0);
+    if ( !is_good ) {
+	lon = -1000;
+    }
+}
+
+
+// Parse a unique scenery tile index and find the lon, lat, x, and y
+SGBucket::SGBucket(const long int bindex) {
+    long int index = bindex;
+	
+    lon = index >> 14;
+    index -= lon << 14;
+    lon -= 180;
+
+    lat = index >> 6;
+    index -= lat << 6;
+    lat -= 90;
+
+    y = index >> 3;
+    index -= y << 3;
+
+    x = index;
+}
+
+
+// default destructor
+SGBucket::~SGBucket() {
+}
+
+
+// Set the bucket params for the specified lat and lon
+void SGBucket::set_bucket( double *lonlat ) {
+    set_bucket( lonlat[0], lonlat[1] );
+}	
+
+
+// Set the bucket params for the specified lat and lon
+void SGBucket::set_bucket( double dlon, double dlat ) {
+    //
+    // latitude first
+    //
+    double span = sg_bucket_span( dlat );
+    double diff = dlon - (double)(int)dlon;
+
+    // cout << "diff = " << diff << "  span = " << span << endl;
+
+    if ( (dlon >= 0) || (fabs(diff) < SG_EPSILON) ) {
+	lon = (int)dlon;
+    } else {
+	lon = (int)dlon - 1;
+    }
+
+    // find subdivision or super lon if needed
+    if ( span < SG_EPSILON ) {
+	// polar cap
+	lon = 0;
+	x = 0;
+    } else if ( span <= 1.0 ) {
+	x = (int)((dlon - lon) / span);
+    } else {
+	if ( (dlon >= 0) || (fabs(diff) < SG_EPSILON) ) {
+	    lon = (int)( (int)(lon / span) * span);
+	} else {
+	    // cout << " lon = " << lon 
+	    //  << "  tmp = " << (int)((lon-1) / span) << endl;
+	    lon = (int)( (int)((lon + 1) / span) * span - span);
+	    if ( lon < -180 ) {
+		lon = -180;
+	    }
+	}
+	x = 0;
+    }
+
+    //
+    // then latitude
+    //
+    diff = dlat - (double)(int)dlat;
+
+    if ( (dlat >= 0) || (fabs(diff) < SG_EPSILON) ) {
+	lat = (int)dlat;
+    } else {
+	lat = (int)dlat - 1;
+    }
+    y = (int)((dlat - lat) * 8);
+}
+
+
 // Build the path name for this bucket
-string FGBucket::gen_base_path() const {
+string SGBucket::gen_base_path() const {
     // long int index;
     int top_lon, top_lat, main_lon, main_lat;
     char hem, pole;
@@ -78,25 +175,64 @@ string FGBucket::gen_base_path() const {
 	    hem, top_lon, pole, top_lat, 
 	    hem, main_lon, pole, main_lat);
 
-    FGPath path( raw_path );
+    SGPath path( raw_path );
 
     return path.str();
 }
 
 
+// return width of the tile in degrees
+double SGBucket::get_width() const {
+    return sg_bucket_span( get_center_lat() );
+}
+
+
+// return height of the tile in degrees
+double SGBucket::get_height() const {
+    return SG_BUCKET_SPAN;
+}
+
+
+// return width of the tile in meters
+double SGBucket::get_width_m() const {
+    double clat = (int)get_center_lat();
+    if ( clat > 0 ) {
+	clat = (int)clat + 0.5;
+    } else {
+	clat = (int)clat - 0.5;
+    }
+    double clat_rad = clat * SGD_DEGREES_TO_RADIANS;
+    double cos_lat = cos( clat_rad );
+    double local_radius = cos_lat * SG_EQUATORIAL_RADIUS_M;
+    double local_perimeter = 2.0 * local_radius * SGD_PI;
+    double degree_width = local_perimeter / 360.0;
+
+    return sg_bucket_span( get_center_lat() ) * degree_width;
+}
+
+
+// return height of the tile in meters
+double SGBucket::get_height_m() const {
+    double perimeter = 2.0 * SG_EQUATORIAL_RADIUS_M * SGD_PI;
+    double degree_height = perimeter / 360.0;
+
+    return SG_BUCKET_SPAN * degree_height;
+}
+
+
 // find the bucket which is offset by the specified tile units in the
 // X & Y direction.  We need the current lon and lat to resolve
 // ambiguities when going from a wider tile to a narrower one above or
 // below.  This assumes that we are feeding in
-FGBucket fgBucketOffset( double dlon, double dlat, int dx, int dy ) {
-    FGBucket result( dlon, dlat );
-    double clat = result.get_center_lat() + dy * FG_BUCKET_SPAN;
+SGBucket sgBucketOffset( double dlon, double dlat, int dx, int dy ) {
+    SGBucket result( dlon, dlat );
+    double clat = result.get_center_lat() + dy * SG_BUCKET_SPAN;
 
     // walk dy units in the lat direction
     result.set_bucket( dlon, clat );
 
     // find the lon span for the new latitude
-    double span = bucket_span( clat );
+    double span = sg_bucket_span( clat );
 
     // walk dx units in the lon direction
     double tmp = dlon + dx * span;
@@ -113,7 +249,7 @@ FGBucket fgBucketOffset( double dlon, double dlat, int dx, int dy ) {
 
 
 // calculate the offset between two buckets
-void fgBucketDiff( const FGBucket& b1, const FGBucket& b2, int *dx, int *dy ) {
+void sgBucketDiff( const SGBucket& b1, const SGBucket& b2, int *dx, int *dy ) {
 
     // Latitude difference
     double c1_lat = b1.get_center_lat();
@@ -121,12 +257,12 @@ void fgBucketDiff( const FGBucket& b1, const FGBucket& b2, int *dx, int *dy ) {
     double diff_lat = c2_lat - c1_lat;
 
 #ifdef HAVE_RINT
-    *dy = (int)rint( diff_lat / FG_BUCKET_SPAN );
+    *dy = (int)rint( diff_lat / SG_BUCKET_SPAN );
 #else
     if ( diff_lat > 0 ) {
-	*dy = (int)( diff_lat / FG_BUCKET_SPAN + 0.5 );
+	*dy = (int)( diff_lat / SG_BUCKET_SPAN + 0.5 );
     } else {
-	*dy = (int)( diff_lat / FG_BUCKET_SPAN - 0.5 );
+	*dy = (int)( diff_lat / SG_BUCKET_SPAN - 0.5 );
     }
 #endif
 
@@ -135,10 +271,10 @@ void fgBucketDiff( const FGBucket& b1, const FGBucket& b2, int *dx, int *dy ) {
     double c2_lon = b2.get_center_lon();
     double diff_lon = c2_lon - c1_lon;
     double span;
-    if ( bucket_span(c1_lat) <= bucket_span(c2_lat) ) {
-	span = bucket_span(c1_lat);
+    if ( sg_bucket_span(c1_lat) <= sg_bucket_span(c2_lat) ) {
+	span = sg_bucket_span(c1_lat);
     } else {
-	span = bucket_span(c2_lat);
+	span = sg_bucket_span(c2_lat);
     }
 
 #ifdef HAVE_RINT

simgear/bucket/newbucket.hxx

@@ -5,23 +5,27 @@
  *
  * Copyright (C) 1999  Curtis L. Olson - curt@flightgear.org
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
 
+/** \file newbucket.hxx
+ * A class and associated utiltity functions to manage world scenery tiling.
+ */
 
 #ifndef _NEWBUCKET_HXX
 #define _NEWBUCKET_HXX
@@ -29,102 +33,46 @@
 #include <simgear/compiler.h>
 #include <simgear/constants.h>
 
-#ifdef FG_HAVE_STD_INCLUDES
+#ifdef SG_HAVE_STD_INCLUDES
 #  include <cmath>
 #  include <cstdio> // sprintf()
-#  include <iostream>
 #else
 #  include <math.h>
 #  include <stdio.h> // sprintf()
-#  include <iostream.h>
 #endif
 
+#include STL_IOSTREAM
+
 // I don't understand ... <math.h> or <cmath> should be included
-// already depending on how you defined FG_HAVE_STD_INCLUDES, but I
+// already depending on how you defined SG_HAVE_STD_INCLUDES, but I
 // can go ahead and add this -- CLO
 #ifdef __MWERKS__
-#  include <math.h> // needed fabs()
+SG_USING_STD(sprintf);
+SG_USING_STD(fabs);
 #endif
 
 #include STL_STRING
 
-FG_USING_STD(string);
+SG_USING_STD(string);
 
-#if ! defined( FG_HAVE_NATIVE_SGI_COMPILERS )
-FG_USING_STD(ostream);
+#if ! defined( SG_HAVE_NATIVE_SGI_COMPILERS )
+SG_USING_STD(ostream);
 #endif
 
 
+/**
+ * standard size of a bucket in degrees (1/8 of a degree)
+ */
+#define SG_BUCKET_SPAN      0.125
 
-#define FG_BUCKET_SPAN      0.125   // 1/8 of a degree
-#define FG_HALF_BUCKET_SPAN 0.0625  // 1/2 of 1/8 of a degree = 1/16 = 0.0625
-
-class FGBucket;
-ostream& operator<< ( ostream&, const FGBucket& );
-bool operator== ( const FGBucket&, const FGBucket& );
-
-class FGBucket {
-
-private:
-    double cx, cy;  // centerpoint (lon, lat) in degrees of bucket
-    int lon;        // longitude index (-180 to 179)
-    int lat;        // latitude index (-90 to 89)
-    int x;          // x subdivision (0 to 7)
-    int y;          // y subdivision (0 to 7)
-
-public:
-    
-    // default constructor
-    FGBucket();
-
-    // create a bucket which would contain the specified lon/lat
-    FGBucket(const double lon, const double lat);
-
-    // create a bucket based on "long int" index
-    FGBucket(const long int bindex);
-
-    // create an impossible bucket if false
-    FGBucket(const bool is_good);
-
-    ~FGBucket();
-
-    // Set the bucket params for the specified lat and lon
-    void set_bucket( double dlon, double dlat );
-    void make_bad ( void );
-
-    // Generate the unique scenery tile index for this bucket
-    long int gen_index();
-    string gen_index_str() const;
-
-    // Build the path name for this bucket
-    string gen_base_path() const;
-
-    // return the center lon of a tile
-    double get_center_lon() const;
-
-    // return width of the tile
-    double get_width() const;
-
-    // return the center lat of a tile
-    double get_center_lat() const;
-
-    // return height of the tile
-    double get_height() const;
-
-    // Informational methods
-    inline int get_lon() const { return lon; }
-    inline int get_lat() const { return lat; }
-    inline int get_x() const { return x; }
-    inline int get_y() const { return y; }
-
-    // friends
-    friend ostream& operator<< ( ostream&, const FGBucket& );
-    friend bool operator== ( const FGBucket&, const FGBucket& );
-};
+/**
+ * half of a standard SG_BUCKET_SPAN
+ */
+#define SG_HALF_BUCKET_SPAN ( 0.5 * SG_BUCKET_SPAN )
 
 
 // return the horizontal tile span factor based on latitude
-inline double bucket_span( double l ) {
+static double sg_bucket_span( double l ) {
     if ( l >= 89.0 ) {
 	return 360.0;
     } else if ( l >= 88.0 ) {
@@ -159,185 +107,229 @@ inline double bucket_span( double l ) {
 }
 
 
-// Set the bucket params for the specified lat and lon
-inline void FGBucket::set_bucket( double dlon, double dlat ) {
-    //
-    // latitude first
-    //
-    double span = bucket_span( dlat );
-    double diff = dlon - (double)(int)dlon;
+/**
+ * A class to manage world scenery tiling.
+ * This class encapsulates the world tiling scheme.  It provides ways
+ * to calculate a unique tile index from a lat/lon, and it can provide
+ * information such as the dimensions of a given tile.
+ */
 
-    // cout << "diff = " << diff << "  span = " << span << endl;
+class SGBucket {
 
-    if ( (dlon >= 0) || (fabs(diff) < FG_EPSILON) ) {
-	lon = (int)dlon;
-    } else {
-	lon = (int)dlon - 1;
+private:
+    double cx, cy;  // centerpoint (lon, lat) in degrees of bucket
+    int lon;        // longitude index (-180 to 179)
+    int lat;        // latitude index (-90 to 89)
+    int x;          // x subdivision (0 to 7)
+    int y;          // y subdivision (0 to 7)
+
+public:
+
+    /**
+     * Default constructor.
+     */
+    SGBucket();
+
+    /**
+     * Construct a bucket given a specific location.
+     * @param dlon longitude specified in degrees
+     * @param dlat latitude specified in degrees
+     */
+    SGBucket(const double dlon, const double dlat);
+
+    /** Construct a bucket.
+     *  @param is_good if false, create an invalid bucket.  This is
+     *  useful * if you are comparing cur_bucket to last_bucket and
+     *  you want to * make sure last_bucket starts out as something
+     *  impossible.
+     */
+    SGBucket(const bool is_good);
+
+    /** Construct a bucket given a unique bucket index number.
+     * @param bindex unique bucket index
+     */
+    SGBucket(const long int bindex);
+
+    /**
+     * Default destructor.
+     */
+    ~SGBucket();
+
+    /**
+     * Reset a bucket to represent a new lat and lon
+     * @param dlon longitude specified in degrees
+     * @param dlat latitude specified in degrees
+     */
+    void set_bucket( double dlon, double dlat );
+
+    /**
+     * Reset a bucket to represent a new lat and lon
+     * @param lonlat an array of double[2] holding lon and lat
+     * (specified) in degrees
+     */
+    void set_bucket( double *lonlat );
+
+    /**
+     * Create an impossible bucket.
+     * This is useful if you are comparing cur_bucket to last_bucket
+     * and you want to make sure last_bucket starts out as something
+     * impossible.
+     */
+    inline void make_bad() {
+	set_bucket(0.0, 0.0);
+	lon = -1000;
     }
 
-    // find subdivision or super lon if needed
-    if ( span < FG_EPSILON ) {
-	// polar cap
-	lon = 0;
-	x = 0;
-    } else if ( span <= 1.0 ) {
-	x = (int)((dlon - lon) / span);
-    } else {
-	if ( (dlon >= 0) || (fabs(diff) < FG_EPSILON) ) {
-	    lon = (int)( (int)(lon / span) * span);
+    /**
+     * Generate the unique scenery tile index for this bucket
+     *
+     * The index is constructed as follows:
+     * 
+     * 9 bits - to represent 360 degrees of longitude (-180 to 179)
+     * 8 bits - to represent 180 degrees of latitude (-90 to 89)
+     *
+     * Each 1 degree by 1 degree tile is further broken down into an 8x8
+     * grid.  So we also need:
+     *
+     * 3 bits - to represent x (0 to 7)
+     * 3 bits - to represent y (0 to 7)
+     * @return tile index
+     */
+    inline long int gen_index() const {
+	return ((lon + 180) << 14) + ((lat + 90) << 6) + (y << 3) + x;
+    }
+
+    /**
+     * Generate the unique scenery tile index for this bucket in ascii
+     * string form.
+     * @return tile index in string form
+     */
+    inline string gen_index_str() const {
+	char tmp[20];
+	sprintf(tmp, "%ld", 
+                (((long)lon + 180) << 14) + ((lat + 90) << 6) + (y << 3) + x);
+	return (string)tmp;
+    }
+
+    /**
+     * Build the base path name for this bucket.
+     * @return base path in string form
+     */
+    string gen_base_path() const;
+
+    /**
+     * @return the center lon of a tile.
+     */
+    inline double get_center_lon() const {
+	double span = sg_bucket_span( lat + y / 8.0 + SG_HALF_BUCKET_SPAN );
+
+	if ( span >= 1.0 ) {
+	    return lon + span / 2.0;
 	} else {
-	    // cout << " lon = " << lon 
-	    //  << "  tmp = " << (int)((lon-1) / span) << endl;
-	    lon = (int)( (int)((lon + 1) / span) * span - span);
-	    if ( lon < -180 ) {
-		lon = -180;
-	    }
+	    return lon + x * span + span / 2.0;
 	}
-	x = 0;
     }
 
-    //
-    // then latitude
-    //
-    diff = dlat - (double)(int)dlat;
-
-    if ( (dlat >= 0) || (fabs(diff) < FG_EPSILON) ) {
-	lat = (int)dlat;
-    } else {
-	lat = (int)dlat - 1;
+    /**
+     * @return the center lat of a tile.
+     */
+    inline double get_center_lat() const {
+	return lat + y / 8.0 + SG_HALF_BUCKET_SPAN;
     }
-    y = (int)((dlat - lat) * 8);
-}
+
+    /**
+     * @return the width of the tile in degrees.
+     */
+    double get_width() const;
+
+    /**
+     * @return the height of the tile in degrees.
+     */
+    double get_height() const;
+
+    /**
+     * @return the width of the tile in meters.
+     */
+    double get_width_m() const; 
+
+    /**
+     * @return the height of the tile in meters.
+     */
+    double get_height_m() const;
+ 
+    // Informational methods.
+
+    /**
+     * @return the lon of the lower left corner of this tile.
+     */
+    inline int get_lon() const { return lon; }
+
+    /**
+     * @return the lat of the lower left corner of this tile.
+     */
+    inline int get_lat() const { return lat; }
+
+    /**
+     * @return the x coord within the 1x1 degree chunk this tile.
+     */
+    inline int get_x() const { return x; }
+
+    /**
+     * @return the y coord within the 1x1 degree chunk this tile.
+     */
+    inline int get_y() const { return y; }
+
+    // friends
+
+    friend ostream& operator<< ( ostream&, const SGBucket& );
+    friend bool operator== ( const SGBucket&, const SGBucket& );
+};
 
 
-// default constructor
-inline FGBucket::FGBucket() {}
+/**
+ * \relates SGBucket
+ * Return the bucket which is offset from the specified dlon, dlat by
+ * the specified tile units in the X & Y direction.
+ * @param dlon starting lon in degrees
+ * @param dlat starting lat in degrees
+ * @param x number of bucket units to offset in x (lon) direction
+ * @param y number of bucket units to offset in y (lat) direction
+ * @return offset bucket
+ */
+SGBucket sgBucketOffset( double dlon, double dlat, int x, int y );
 
 
-// constructor for specified location
-inline FGBucket::FGBucket(const double dlon, const double dlat) {
-    set_bucket(dlon, dlat);
-}
-
-
-// create an impossible bucket if false
-inline FGBucket::FGBucket(const bool is_good) {
-    set_bucket(0.0, 0.0);
-    if ( !is_good ) {
-	lon = -1000;
-    }
-}
-    
-
-// Parse a unique scenery tile index and find the lon, lat, x, and y
-inline FGBucket::FGBucket(const long int bindex) {
-    long int index = bindex;
-
-    lon = index >> 14;
-    index -= lon << 14;
-    lon -= 180;
-    
-    lat = index >> 6;
-    index -= lat << 6;
-    lat -= 90;
-    
-    y = index >> 3;
-    index -= y << 3;
-
-    x = index;
-}
-
-
-// default destructor
-inline FGBucket::~FGBucket() {}
-
-
-// Generate the unique scenery tile index for this bucket
-// 
-// The index is constructed as follows:
-// 
-// 9 bits - to represent 360 degrees of longitude (-180 to 179)
-// 8 bits - to represent 180 degrees of latitude (-90 to 89)
-//
-// Each 1 degree by 1 degree tile is further broken down into an 8x8
-// grid.  So we also need:
-//
-// 3 bits - to represent x (0 to 7)
-// 3 bits - to represent y (0 to 7)
-
-inline long int FGBucket::gen_index() {
-    return ((lon + 180) << 14) + ((lat + 90) << 6) + (y << 3) + x;
-}
-
-inline string FGBucket::gen_index_str() const {
-    char tmp[20];
-    sprintf(tmp, "%ld", 
-	    (((long)lon + 180) << 14) + ((lat + 90) << 6) + (y << 3) + x);
-    return (string)tmp;
-}
-
-
-// return the center lon of a tile
-inline double FGBucket::get_center_lon() const {
-    double span = bucket_span( lat + y / 8.0 + FG_HALF_BUCKET_SPAN );
-
-    if ( span >= 1.0 ) {
-	return lon + span / 2.0;
-    } else {
-	return lon + x * span + span / 2.0;
-    }
-}
-
-
-// return the center lat of a tile
-inline double FGBucket::get_center_lat() const {
-    return lat + y / 8.0 + FG_HALF_BUCKET_SPAN;
-}
-
-
-// return width of the tile
-inline double FGBucket::get_width() const {
-    return bucket_span( get_center_lat() );
-}
-
-
-// return height of the tile
-inline double FGBucket::get_height() const {
-    return FG_BUCKET_SPAN;
-}
-
-
-// create an impossible bucket
-inline void FGBucket::make_bad( void ) {
-    set_bucket(0.0, 0.0);
-	lon = -1000;
-}
-    
-
-// offset a bucket struct by the specified tile units in the X & Y
-// direction
-FGBucket fgBucketOffset( double dlon, double dlat, int x, int y );
-
-
-// calculate the offset between two buckets
-void fgBucketDiff( const FGBucket& b1, const FGBucket& b2, int *dx, int *dy );
-
-
-/*
-// Given a lat/lon, fill in the local tile index array
-void fgBucketGenIdxArray(fgBUCKET *p1, fgBUCKET *tiles, int width, int height);
-*/
+/**
+ * \relates SGBucket
+ * Calculate the offset between two buckets (in quantity of buckets).
+ * @param b1 bucket 1
+ * @param b2 bucket 2
+ * @param dx offset distance (lon) in tile units
+ * @param dy offset distance (lat) in tile units
+ */
+void sgBucketDiff( const SGBucket& b1, const SGBucket& b2, int *dx, int *dy );
 
 
+/**
+ * Write the bucket lon, lat, x, and y to the output stream.
+ * @param out output stream
+ * @param b bucket
+ */
 inline ostream&
-operator<< ( ostream& out, const FGBucket& b )
+operator<< ( ostream& out, const SGBucket& b )
 {
     return out << b.lon << ":" << b.x << ", " << b.lat << ":" << b.y;
 }
 
 
+/**
+ * Compare two bucket structures for equality.
+ * @param b1 bucket 1
+ * @param b2 bucket 2
+ * @return comparison result
+ */
 inline bool
-operator== ( const FGBucket& b1, const FGBucket& b2 )
+operator== ( const SGBucket& b1, const SGBucket& b2 )
 {
     return ( b1.lon == b2.lon &&
 	     b1.lat == b2.lat &&

simgear/compiler.h

@@ -0,0 +1,377 @@
+/**************************************************************************
+ * compiler.h -- C++ Compiler Portability Macros
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
+ *
+ * $Id$
+ *
+ **************************************************************************/
+
+/** \file compiler.h
+ * A set of defines to encapsulate compiler and platform differences.
+ * Please refer to the source code for full documentation on this file.
+ *
+ * Here is a summary of what this file does.
+ *
+ *  (1)  Defines macros for some STL includes which may be affected
+ *       by file name length limitations.
+ *
+ *  (2)  Defines macros for some features not supported by all C++ compilers.
+ *
+ *  (3)  Defines 'explicit' as a null macro if the compiler doesn't support
+ *       the explicit keyword.
+ *
+ *  (4)  Defines 'typename' as a null macro if the compiler doesn't support
+ *       the typename keyword.
+ *
+ *  (5)  Defines bool, true and false if the compiler doesn't do so.
+ *
+ *  (6)  Defines SG_EXPLICIT_FUNCTION_TMPL_ARGS if the compiler
+ *       supports calling a function template by providing its template
+ *       arguments explicitly.
+ *
+ *  (7)  Defines SG_NEED_AUTO_PTR if STL doesn't provide auto_ptr<>.
+ *
+ *  (8)  Defines SG_NO_ARROW_OPERATOR if the compiler is unable
+ *       to support operator->() for iterators.
+ *
+ *  (9)  Defines SG_USE_EXCEPTIONS if the compiler supports exceptions.
+ *       Note: no FlightGear code uses exceptions.
+ *
+ *  (10) Define SG_NAMESPACES if the compiler supports namespaces.
+ *
+ *  (11) SG_MATH_FN_IN_NAMESPACE_STD -- not used??
+ *
+ *  (12) Define SG_HAVE_STD if std namespace is supported.
+ *
+ *  (13) Defines SG_CLASS_PARTIAL_SPECIALIZATION if the compiler 
+ *       supports partial specialization of class templates.
+ *
+ *  (14) Defines SG_HAVE_STD_INCLUDES to use ISO C++ Standard headers.
+ *
+ *  (15) Defines SG_HAVE_STREAMBUF if <streambuf> of <streambuf.h> are present.
+ *
+ *  (16) Define SG_MATH_EXCEPTION_CLASH if math.h defines an exception class
+ *       that clashes with the one defined in <stdexcept>.
+ */
+
+#ifndef _SG_COMPILER_H
+#define _SG_COMPILER_H
+
+#ifdef __GNUC__
+#  if __GNUC__ == 2 
+#    if __GNUC_MINOR__ < 8
+
+       // g++-2.7.x
+#      define STL_ALGORITHM  <algorithm>
+#      define STL_FUNCTIONAL <functional>
+#      define STL_IOMANIP    <iomanip.h>
+#      define STL_IOSTREAM   <iostream.h>
+#      define STL_ITERATOR   <iterator.h>
+#      define STL_FSTREAM    <fstream.h>
+#      define STL_STDEXCEPT  <stdexcept>
+#      define STL_STRING     <string>
+#      define STL_STRSTREAM  <strstream.h>
+
+#      define SG_NEED_AUTO_PTR
+#      define SG_NO_DEFAULT_TEMPLATE_ARGS
+#      define SG_INCOMPLETE_FUNCTIONAL
+#      define SG_NO_ARROW_OPERATOR
+
+#    elif __GNUC_MINOR__ >= 8
+
+       // g++-2.8.x and egcs-1.x
+#      define SG_EXPLICIT_FUNCTION_TMPL_ARGS
+#      define SG_NEED_AUTO_PTR
+#      define SG_MEMBER_TEMPLATES
+#      define SG_NAMESPACES
+#      define SG_HAVE_STD
+#      define SG_HAVE_STREAMBUF
+#      define SG_CLASS_PARTIAL_SPECIALIZATION
+
+#      define STL_ALGORITHM  <algorithm>
+#      define STL_FUNCTIONAL <functional>
+#      define STL_IOMANIP    <iomanip>
+#      define STL_IOSTREAM   <iostream>
+#      define STL_ITERATOR   <iterator>
+#      define STL_FSTREAM    <fstream>
+#      define STL_STDEXCEPT  <stdexcept>
+#      define STL_STRING     <string>
+#      define STL_STRSTREAM  <strstream>
+
+#    endif
+#  elif __GNUC__ == 3
+       // g++-3.0.x
+#      define SG_EXPLICIT_FUNCTION_TMPL_ARGS
+#      define SG_NEED_AUTO_PTR
+#      define SG_MEMBER_TEMPLATES
+#      define SG_NAMESPACES
+#      define SG_HAVE_STD
+#      define SG_HAVE_STREAMBUF
+#      define SG_CLASS_PARTIAL_SPECIALIZATION
+#      define SG_HAVE_STD_INCLUDES
+
+#      define STL_ALGORITHM  <algorithm>
+#      define STL_FUNCTIONAL <functional>
+#      define STL_IOMANIP    <iomanip>
+#      define STL_IOSTREAM   <iostream>
+#      define STL_ITERATOR   <iterator>
+#      define STL_FSTREAM    <fstream>
+#      define STL_STDEXCEPT  <stdexcept>
+#      define STL_STRING     <string>
+#      define STL_STRSTREAM  <strstream>
+
+#  else
+#    error Time to upgrade. GNU compilers < 2.7 not supported
+#  endif
+#endif
+
+/* KAI C++ */
+#if defined(__KCC)
+
+#  define SG_NAMESPACES
+#  define SG_HAVE_STD
+#  define SG_HAVE_STREAMBUF
+#  define SG_HAVE_TRAITS
+#  define SG_HAVE_STD_INCLUDES
+
+#  define STL_ALGORITHM  <algorithm>
+#  define STL_FUNCTIONAL <functional>
+#  define STL_IOMANIP    <iomanip>
+#  define STL_IOSTREAM   <iostream>
+#  define STL_ITERATOR   <iterator>
+#  define STL_FSTREAM    <fstream>
+#  define STL_STDEXCEPT  <stdexcept>
+#  define STL_STRING     <string>
+#  define STL_STRSTREAM  <strstream>
+#endif
+
+//
+// Metrowerks 
+//
+#if defined(__MWERKS__)
+/*
+  CodeWarrior compiler from Metrowerks, Inc.
+*/
+#  define SG_HAVE_TRAITS
+#  define SG_HAVE_STD_INCLUDES
+#  define SG_HAVE_STD
+#  define SG_NAMESPACES
+
+#  define STL_ALGORITHM  <algorithm>
+#  define STL_FUNCTIONAL <functional>
+#  define STL_IOMANIP    <iomanip>
+#  define STL_IOSTREAM   <iostream>
+#  define STL_ITERATOR   <iterator>
+#  define STL_FSTREAM    <fstream>
+#  define STL_STDEXCEPT  <stdexcept>
+#  define STL_STRING     <string>
+
+// Temp:
+#  define bcopy(from, to, n) memcpy(to, from, n)
+
+// -rp- please use FG_MEM_COPY everywhere !
+// #define FG_MEM_COPY(to,from,n) memcpy(to, from, n)
+
+// -dw- currently used glut has no game mode stuff
+#  define GLUT_WRONG_VERSION
+#endif
+
+//
+// Microsoft compilers.
+//
+#ifdef _MSC_VER
+#  define bcopy(from, to, n) memcpy(to, from, n)
+#  define FG_MEM_COPY(to,from,n) memcpy(to, from, n)
+
+#  if _MSC_VER == 1200  // msvc++ 6.0
+#    define SG_NAMESPACES
+#    define SG_HAVE_STD
+#    define SG_HAVE_STD_INCLUDES
+#    define SG_HAVE_STREAMBUF
+
+#    define STL_ALGORITHM  <algorithm>
+#    define STL_FUNCTIONAL <functional>
+#    define STL_IOMANIP    <iomanip>
+#    define STL_IOSTREAM   <iostream>
+#    define STL_ITERATOR   <iterator>
+#    define STL_FSTREAM    <fstream>
+#    define STL_STDEXCEPT  <stdexcept>
+#    define STL_STRING     <string>
+#    define STL_STRSTREAM  <strstream>
+
+#    pragma warning(disable: 4786) // identifier was truncated to '255' characters
+#    pragma warning(disable: 4244) // conversion from double to float
+#    pragma warning(disable: 4305) //
+#  else
+#    error What version of MSVC++ is this?
+#  endif
+#endif
+
+#ifdef __BORLANDC__
+# if defined(HAVE_SGI_STL_PORT)
+
+// Use quotes around long file names to get around Borland's include hackery
+
+#  define STL_ALGORITHM  "algorithm"
+#  define STL_FUNCTIONAL "functional"
+
+#  define SG_MATH_EXCEPTION_CLASH
+
+# else
+
+#  define STL_ALGORITHM  <algorithm>
+#  define STL_FUNCTIONAL <functional>
+#  define STL_IOMANIP    <iomanip>
+#  define STL_STDEXCEPT  <stdexcept>
+#  define STL_STRSTREAM  <strstream>
+
+#  define SG_INCOMPLETE_FUNCTIONAL
+
+# endif // HAVE_SGI_STL_PORT
+
+#  define STL_IOSTREAM   <iostream>
+#  define STL_ITERATOR   <iterator>
+#  define STL_FSTREAM    <fstream>
+#  define STL_STRING     <string>
+#  define SG_NO_DEFAULT_TEMPLATE_ARGS
+#  define SG_NAMESPACES
+// #  define SG_HAVE_STD
+
+#endif // __BORLANDC__
+
+//
+// Native SGI compilers
+//
+
+#if defined ( sgi ) && !defined( __GNUC__ )
+#  define SG_HAVE_NATIVE_SGI_COMPILERS
+
+#  define SG_EXPLICIT_FUNCTION_TMPL_ARGS
+#  define SG_NEED_AUTO_PTR
+#  define SG_MEMBER_TEMPLATES
+#  define SG_NAMESPACES
+#  define SG_HAVE_STD
+#  define SG_CLASS_PARTIAL_SPECIALIZATION
+#  define SG_HAVE_TRAITS
+
+#  define STL_ALGORITHM  <algorithm>
+#  define STL_FUNCTIONAL <functional>
+#  define STL_IOMANIP    <iomanip.h>
+#  define STL_IOSTREAM   <iostream.h>
+#  define STL_ITERATOR   <iterator.h>
+#  define STL_FSTREAM    <fstream.h>
+#  define STL_STDEXCEPT  <stdexcept>
+#  define STL_STRING     <string>
+#  define STL_STRSTREAM  <strstream.h>
+
+#endif // Native SGI compilers
+
+
+#if defined ( sun )
+#  include <strings.h>
+#  include <memory.h>
+#  if defined ( __cplusplus )
+     // typedef unsigned int size_t;
+     extern "C" {
+       extern void *memmove(void *, const void *, size_t);
+     }
+#  else
+     extern void *memmove(void *, const void *, size_t);
+#  endif // __cplusplus
+#endif // sun
+
+//
+// No user modifiable definitions beyond here.
+//
+
+#ifdef SG_NEED_EXPLICIT
+#  define explicit
+#endif
+
+#ifdef SG_NEED_TYPENAME
+#  define typename
+#endif
+
+#ifdef SG_NEED_MUTABLE
+#  define mutable
+#endif
+
+#ifdef SG_NEED_BOOL
+   typedef int bool;
+#  define true 1
+#  define false 0
+#endif
+
+#ifdef SG_EXPLICIT_FUNCTION_TMPL_ARGS
+#  define SG_NULL_TMPL_ARGS <>
+#else
+#  define SG_NULL_TMPL_ARGS
+#endif
+
+#ifdef SG_CLASS_PARTIAL_SPECIALIZATION
+# define SG_TEMPLATE_NULL template<>
+#else
+# define SG_TEMPLATE_NULL
+#endif
+
+// SG_NO_NAMESPACES is a hook so that users can disable namespaces
+// without having to edit library headers.
+#if defined(SG_NAMESPACES) && !defined(SG_NO_NAMESPACES)
+#   define SG_NAMESPACE(X) namespace X {
+#   define SG_NAMESPACE_END }
+#   define SG_USING_NAMESPACE(X) using namespace X
+# else
+#   define SG_NAMESPACE(X)
+#   define SG_NAMESPACE_END
+#   define SG_USING_NAMESPACE(X)
+#endif
+
+/** \def SG_USING_STD(x)
+ *  Expands to using std::x if SG_HAVE_STD is defined 
+ */
+# ifdef SG_HAVE_STD
+#  define SG_USING_STD(X) using std::X
+#  define STD std
+# else
+#  define SG_USING_STD(X) 
+#  define STD
+# endif
+
+// Additional <functional> implementation from SGI STL 3.11
+// Adapter function objects: pointers to member functions
+#ifdef SG_INCOMPLETE_FUNCTIONAL
+
+template <class _Ret, class _Tp>
+class const_mem_fun_ref_t
+#ifndef __BORLANDC__
+    : public unary_function<_Tp,_Ret>
+#endif // __BORLANDC__
+{
+public:
+  explicit const_mem_fun_ref_t(_Ret (_Tp::*__pf)() const) : _M_f(__pf) {}
+  _Ret operator()(const _Tp& __r) const { return (__r.*_M_f)(); }
+private:
+  _Ret (_Tp::*_M_f)() const;
+};
+
+template <class _Ret, class _Tp>
+inline const_mem_fun_ref_t<_Ret,_Tp> mem_fun_ref(_Ret (_Tp::*__f)() const)
+  { return const_mem_fun_ref_t<_Ret,_Tp>(__f); }
+
+#endif // SG_INCOMPLETE_FUNCTIONAL
+
+#endif // _SG_COMPILER_H

simgear/constants.h

@@ -0,0 +1,132 @@
+// constants.h -- various constant definitions
+//
+// Written by Curtis Olson, started February 2000.
+//
+// Copyright (C) 2000  Curtis L. Olson  - curt@flightgear.org
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA  02111-1307, USA.
+//
+// $Id$
+
+/** \file constants.h
+ * Various constant definitions.
+ */
+
+
+#ifndef _SG_CONSTANTS_H
+#define _SG_CONSTANTS_H
+
+
+#include <simgear/compiler.h>
+
+#ifdef SG_HAVE_STD_INCLUDES
+#  include <cmath>
+#else
+#  ifdef SG_MATH_EXCEPTION_CLASH
+#    define exception C_exception
+#  endif
+#  include <math.h>
+#endif
+
+#include <plib/sg.h>
+
+
+// Make sure PI is defined in its various forms
+
+// SG_PI and SGD_PI (float and double) come from plib/sg.h
+
+/** 2 * PI */
+#define SGD_2PI      6.28318530717958647692
+
+/** PI / 2 */
+#ifdef M_PI_2
+#  define  SGD_PI_2  M_PI_2
+#else
+#  define  SGD_PI_2  1.57079632679489661923
+#endif
+
+/** PI / 4 */
+#define SGD_PI_4     0.78539816339744830961
+
+/** \def SG_E "e" */
+#ifdef M_E
+#  define SG_E     M_E
+#else
+#  define SG_E     2.7182818284590452354
+#endif
+
+/** pi/180/60/60, or about 100 feet at earths' equator */
+#define SG_ONE_SECOND 4.848136811E-6
+
+
+/** Radius of Earth in kilometers at the equator.  Another source had
+ *  6378.165 but this is probably close enough */
+#define SG_EARTH_RAD 6378.155
+
+
+// Earth parameters for WGS 84, taken from LaRCsim/ls_constants.h
+
+/** Value of earth radius from LaRCsim (ft) */
+#define SG_EQUATORIAL_RADIUS_FT  20925650.
+
+/** Value of earth radius from LaRCsim (meter) */
+#define SG_EQUATORIAL_RADIUS_M   6378138.12
+
+/** Radius squared (ft) */
+#define SG_EQ_RAD_SQUARE_FT 437882827922500.
+
+/** Radius squared (meter) */
+#define SG_EQ_RAD_SQUARE_M   40680645877797.1344
+
+// Conversions
+
+/** Arc seconds to radians.  (arcsec*pi)/(3600*180) = rad */
+#define SG_ARCSEC_TO_RAD    4.84813681109535993589e-06 
+
+/** Radians to arc seconds.  (rad*3600*180)/pi = arcsec */
+#define SG_RAD_TO_ARCSEC    206264.806247096355156
+
+/** Feet to Meters */
+#define SG_FEET_TO_METER    0.3048
+
+/** Meters to Feet */
+#define SG_METER_TO_FEET    3.28083989501312335958  
+
+/** Meters to Nautical Miles.  1 nm = 6076.11549 feet */
+#define SG_METER_TO_NM      0.00053995680
+
+/** Nautical Miles to Meters */
+#define SG_NM_TO_METER      1852.0000
+
+/** Radians to Nautical Miles.  1 nm = 1/60 of a degree */
+#define SG_NM_TO_RAD        0.00029088820866572159
+
+/** Nautical Miles to Radians */
+#define SG_RAD_TO_NM        3437.7467707849392526
+
+/** For divide by zero avoidance, this will be close enough to zero */
+#define SG_EPSILON 0.0000001
+
+
+/** Highest binobj format version we know how to read/write.  This starts at
+ *  0 and can go up to 65535 */
+#define SG_BINOBJ_VERSION 5
+
+/** for backwards compatibility */
+#define SG_SCENERY_FILE_FORMAT "0.4"
+
+
+#endif // _SG_CONSTANTS_H

simgear/debug/Makefile.am

@@ -8,4 +8,4 @@ include_HEADERS = debug_types.h logstream.hxx
 
 libsgdebug_a_SOURCES = logstream.cxx
 
-INCLUDES += -I$(top_builddir)/src
+INCLUDES += -I$(top_srcdir)

simgear/debug/debug_types.h

@@ -1,38 +1,43 @@
-// NB: To add a dbg_class, add it here, and add it to the structure in
-// fg_debug.c
+/** \file debug_types.h
+ *  Define the various logging classes and prioritiess
+ */
 
+/** 
+ * Define the possible classes/categories of logging messages
+ */
 typedef enum {
-    FG_NONE      = 0x00000000,
+    SG_NONE      = 0x00000000,
 
-    FG_TERRAIN   = 0x00000001,
-    FG_ASTRO     = 0x00000002,
-    FG_FLIGHT    = 0x00000004,
-    FG_INPUT     = 0x00000008,
-    FG_GL        = 0x00000010,
-    FG_VIEW      = 0x00000020,
-    FG_COCKPIT   = 0x00000040,
-    FG_GENERAL   = 0x00000080,
-    FG_MATH      = 0x00000100,
-    FG_EVENT     = 0x00000200,
-    FG_AIRCRAFT  = 0x00000400,
-    FG_AUTOPILOT = 0x00000800,
-    FG_IO        = 0x00001000,
-    FG_CLIPPER   = 0x00002000,
-    FG_NETWORK   = 0x00004000,
-    FG_UNDEFD    = 0x00008000, // For range checking
+    SG_TERRAIN   = 0x00000001,
+    SG_ASTRO     = 0x00000002,
+    SG_FLIGHT    = 0x00000004,
+    SG_INPUT     = 0x00000008,
+    SG_GL        = 0x00000010,
+    SG_VIEW      = 0x00000020,
+    SG_COCKPIT   = 0x00000040,
+    SG_GENERAL   = 0x00000080,
+    SG_MATH      = 0x00000100,
+    SG_EVENT     = 0x00000200,
+    SG_AIRCRAFT  = 0x00000400,
+    SG_AUTOPILOT = 0x00000800,
+    SG_IO        = 0x00001000,
+    SG_CLIPPER   = 0x00002000,
+    SG_NETWORK   = 0x00004000,
+    SG_UNDEFD    = 0x00008000, // For range checking
 
-    FG_ALL     = 0xFFFFFFFF
-} fgDebugClass;
+    SG_ALL     = 0xFFFFFFFF
+} sgDebugClass;
 
 
-// NB: To add a priority, add it here.
+/**
+ * Define the possible logging priorities (and their order).
+ */
 typedef enum {
-    FG_BULK,	    // For frequent messages
-    FG_DEBUG, 	    // Less frequent debug type messages
-    FG_INFO,        // Informatory messages
-    FG_WARN,	    // Possible impending problem
-    FG_ALERT       // Very possible impending problem
-    // FG_EXIT,        // Problem (no core)
-    // FG_ABORT        // Abandon ship (core)
-} fgDebugPriority;
-
+    SG_BULK,	    // For frequent messages
+    SG_DEBUG, 	    // Less frequent debug type messages
+    SG_INFO,        // Informatory messages
+    SG_WARN,	    // Possible impending problem
+    SG_ALERT       // Very possible impending problem
+    // SG_EXIT,        // Problem (no core)
+    // SG_ABORT        // Abandon ship (core)
+} sgDebugPriority;

simgear/debug/logstream.cxx

@@ -4,27 +4,28 @@
 //
 // Copyright (C) 1998  Bernie Bright - bbright@c031.aone.net.au
 //
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
 //
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
+// Library General Public License for more details.
 //
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA  02111-1307, USA.
 //
 // $Id$
 
 #include "logstream.hxx"
 
 bool            logbuf::logging_enabled = true;
-fgDebugClass    logbuf::logClass        = FG_NONE;
-fgDebugPriority logbuf::logPriority     = FG_INFO;
+sgDebugClass    logbuf::logClass        = SG_NONE;
+sgDebugPriority logbuf::logPriority     = SG_INFO;
 streambuf*      logbuf::sbuf            = NULL;
 
 logbuf::logbuf()
@@ -49,14 +50,14 @@ logbuf::set_sb( streambuf* sb )
 }
 
 void
-logbuf::set_log_level( fgDebugClass c, fgDebugPriority p )
+logbuf::set_log_level( sgDebugClass c, sgDebugPriority p )
 {
     logClass = c;
     logPriority = p;
 }
 
 void
-logstream::setLogLevels( fgDebugClass c, fgDebugPriority p )
+logstream::setLogLevels( sgDebugClass c, sgDebugPriority p )
 {
     logbuf::set_log_level( c, p );
 }

simgear/debug/logstream.hxx

@@ -1,56 +1,59 @@
-// Stream based logging mechanism.
-//
+/** \file logstream.hxx
+ * Stream based logging mechanism.
+ */
+
 // Written by Bernie Bright, 1998
 //
 // Copyright (C) 1998  Bernie Bright - bbright@c031.aone.net.au
 //
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
 //
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
+// Library General Public License for more details.
 //
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA  02111-1307, USA.
 //
 // $Id$
 
 #ifndef _LOGSTREAM_H
 #define _LOGSTREAM_H
 
-#ifdef HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
-
 #include <simgear/compiler.h>
 
-#ifdef FG_HAVE_STD_INCLUDES
+// At least Irix needs this
+#ifdef SG_HAVE_NATIVE_SGI_COMPILERS
+#include <char_traits.h>
+#endif
+
+#ifdef SG_HAVE_STD_INCLUDES
 # include <streambuf>
 # include <iostream>
 #else
 # include <iostream.h>
-# include <simgear/fg_traits.hxx>
+# include <simgear/sg_traits.hxx>
 #endif
 
 #include <simgear/debug/debug_types.h>
 
-#ifndef FG_HAVE_NATIVE_SGI_COMPILERS
-FG_USING_STD(streambuf);
-FG_USING_STD(ostream);
-FG_USING_STD(cerr);
-FG_USING_STD(endl);
+#ifndef SG_HAVE_NATIVE_SGI_COMPILERS
+SG_USING_STD(streambuf);
+SG_USING_STD(ostream);
+SG_USING_STD(cerr);
+SG_USING_STD(endl);
+#else
+SG_USING_STD(char_traits);
 #endif
 
 #ifdef __MWERKS__
-#  define cerr std::cerr
-#  define endl std::endl
-FG_USING_STD(iostream);
+SG_USING_STD(iostream);
 #endif
 
 //
@@ -61,43 +64,61 @@ FG_USING_STD(iostream);
 // 3. Read environment for default debugClass and debugPriority.
 //
 
-//-----------------------------------------------------------------------------
-//
-// logbuf is an output-only streambuf with the ability to disable sets of
-// messages at runtime. Only messages with priority >= logbuf::logPriority
-// and debugClass == logbuf::logClass are output.
-//
+/**
+ * logbuf is an output-only streambuf with the ability to disable sets of
+ * messages at runtime. Only messages with priority >= logbuf::logPriority
+ * and debugClass == logbuf::logClass are output.
+ */
 class logbuf : public streambuf
 {
 public:
 
-#ifndef FG_HAVE_STD_INCLUDES
+#ifndef SG_HAVE_STD_INCLUDES
     typedef char_traits<char>           traits_type;
     typedef char_traits<char>::int_type int_type;
-    typedef char_traits<char>::pos_type pos_type;
-    typedef char_traits<char>::off_type off_type;
+    // typedef char_traits<char>::pos_type pos_type;
+    // typedef char_traits<char>::off_type off_type;
 #endif
-//     logbuf( streambuf* sb ) : sbuf(sb) {}
+    // logbuf( streambuf* sb ) : sbuf(sb) {}
+    /** Constructor */
     logbuf();
+
+    /** Destructor */
     ~logbuf();
 
-    // Is logging enabled?
+    /**
+     * Is logging enabled?
+     * @return true or false*/
     bool enabled() { return logging_enabled; }
 
-    // Set the logging level of subsequent messages.
-    void set_log_state( fgDebugClass c, fgDebugPriority p );
+    /**
+     * Set the logging level of subsequent messages.
+     * @param c debug class
+     * @param p priority
+     */
+    void set_log_state( sgDebugClass c, sgDebugPriority p );
 
-    // Set the global logging level.
-    static void set_log_level( fgDebugClass c, fgDebugPriority p );
+    /**
+     * Set the global logging level.
+     * @param c debug class
+     * @param p priority
+     */
+    static void set_log_level( sgDebugClass c, sgDebugPriority p );
 
-    //
+    /**
+     * Set the stream buffer
+     * @param sb stream buffer
+     */
     void set_sb( streambuf* sb );
 
 protected:
 
+    /** sync/flush */
     inline virtual int sync();
+
+    /** overflow */
     int_type overflow( int ch );
-//     int xsputn( const char* s, istreamsize n );
+    // int xsputn( const char* s, istreamsize n );
 
 private:
 
@@ -105,8 +126,8 @@ private:
     static streambuf* sbuf;
 
     static bool logging_enabled;
-    static fgDebugClass logClass;
-    static fgDebugPriority logPriority;
+    static sgDebugClass logClass;
+    static sgDebugPriority logPriority;
 
 private:
 
@@ -118,7 +139,7 @@ private:
 inline int
 logbuf::sync()
 {
-#ifdef FG_HAVE_STD_INCLUDES
+#ifdef SG_HAVE_STD_INCLUDES
 	return sbuf->pubsync();
 #else
 	return sbuf->sync();
@@ -126,7 +147,7 @@ logbuf::sync()
 }
 
 inline void
-logbuf::set_log_state( fgDebugClass c, fgDebugPriority p )
+logbuf::set_log_state( sgDebugClass c, sgDebugPriority p )
 {
     logging_enabled = ((c & logClass) != 0 && p >= logPriority);
 }
@@ -137,54 +158,65 @@ logbuf::overflow( int c )
     return logging_enabled ? sbuf->sputc(c) : (EOF == 0 ? 1: 0);
 }
 
-//-----------------------------------------------------------------------------
-//
-// logstream manipulator for setting the log level of a message.
-//
+/**
+ * logstream manipulator for setting the log level of a message.
+ */
 struct loglevel
 {
-    loglevel( fgDebugClass c, fgDebugPriority p )
+    loglevel( sgDebugClass c, sgDebugPriority p )
 	: logClass(c), logPriority(p) {}
 
-    fgDebugClass logClass;
-    fgDebugPriority logPriority;
+    sgDebugClass logClass;
+    sgDebugPriority logPriority;
 };
 
-//-----------------------------------------------------------------------------
-//
-// A helper class that ensures a streambuf and ostream are constructed and
-// destroyed in the correct order.  The streambuf must be created before the
-// ostream but bases are constructed before members.  Thus, making this class
-// a private base of logstream, declared to the left of ostream, we ensure the
-// correct order of construction and destruction.
-//
+/**
+ * A helper class that ensures a streambuf and ostream are constructed and
+ * destroyed in the correct order.  The streambuf must be created before the
+ * ostream but bases are constructed before members.  Thus, making this class
+ * a private base of logstream, declared to the left of ostream, we ensure the
+ * correct order of construction and destruction.
+ */
 struct logstream_base
 {
-//     logstream_base( streambuf* sb ) : lbuf(sb) {}
+    // logstream_base( streambuf* sb ) : lbuf(sb) {}
     logstream_base() {}
 
     logbuf lbuf;
 };
 
-//-----------------------------------------------------------------------------
-//
-// 
-//
+/**
+ * Class to manage the debug logging stream.
+ */
 class logstream : private logstream_base, public ostream
 {
 public:
-    // The default is to send messages to cerr.
+    /**
+     * The default is to send messages to cerr.
+     * @param out output stream
+     */
     logstream( ostream& out )
-// 	: logstream_base(out.rdbuf()),
+	// : logstream_base(out.rdbuf()),
 	: logstream_base(),
 	  ostream(&lbuf) { lbuf.set_sb(out.rdbuf());}
 
+    /**
+     * Set the output stream
+     * @param out output stream
+     */
     void set_output( ostream& out ) { lbuf.set_sb( out.rdbuf() ); }
 
-    // Set the global log class and priority level.
-     void setLogLevels( fgDebugClass c, fgDebugPriority p );
+    /**
+     * Set the global log class and priority level.
+     * @param c debug class
+     * @param p priority
+     */
+    void setLogLevels( sgDebugClass c, sgDebugPriority p );
 
-    // Output operator to capture the debug level and priority of a message.
+    /**
+     * Output operator to capture the debug level and priority of a message.
+     * @param l log level
+     */
     inline ostream& operator<< ( const loglevel& l );
 };
 
@@ -195,26 +227,36 @@ logstream::operator<< ( const loglevel& l )
     return *this;
 }
 
-//-----------------------------------------------------------------------------
-//
-// Return the one and only logstream instance.
-// We use a function instead of a global object so we are assured that cerr
-// has been initialised.
-//
+
+/**
+ * \relates logstream
+ * Return the one and only logstream instance.
+ * We use a function instead of a global object so we are assured that cerr
+ * has been initialised.
+ * @return current logstream
+ */
 inline logstream&
-fglog()
+sglog()
 {
     static logstream logstrm( cerr );
     return logstrm;
 }
 
+
+/** \def SG_LOG(C,P,M)
+ * Log a message.
+ * @param C debug class
+ * @param P priority
+ * @param M message
+ */
 #ifdef FG_NDEBUG
-# define FG_LOG(C,P,M)
+# define SG_LOG(C,P,M)
 #elif defined( __MWERKS__ )
-# define FG_LOG(C,P,M) ::fglog() << ::loglevel(C,P) << M << std::endl
+# define SG_LOG(C,P,M) ::sglog() << ::loglevel(C,P) << M << std::endl
 #else
-# define FG_LOG(C,P,M) fglog() << loglevel(C,P) << M << endl
+# define SG_LOG(C,P,M) sglog() << loglevel(C,P) << M << endl
 #endif
 
+
 #endif // _LOGSTREAM_H
 

simgear/debug/logtest.cxx

@@ -4,20 +4,20 @@
 int
 main( int argc, char* argv[] )
 {
-    fglog().setLogLevels( FG_ALL, FG_INFO );
+    fglog().setLogLevels( SG_ALL, SG_INFO );
 
-    FG_LOG( FG_TERRAIN, FG_BULK,  "terrain::bulk" ); // shouldnt appear
-    FG_LOG( FG_TERRAIN, FG_DEBUG, "terrain::debug" ); // shouldnt appear
-    FG_LOG( FG_TERRAIN, FG_INFO,  "terrain::info" );
-    FG_LOG( FG_TERRAIN, FG_WARN,  "terrain::warn" );
-    FG_LOG( FG_TERRAIN, FG_ALERT, "terrain::alert" );
+    SG_LOG( FG_TERRAIN, FG_BULK,  "terrain::bulk" ); // shouldnt appear
+    SG_LOG( FG_TERRAIN, SG_DEBUG, "terrain::debug" ); // shouldnt appear
+    SG_LOG( FG_TERRAIN, SG_INFO,  "terrain::info" );
+    SG_LOG( FG_TERRAIN, FG_WARN,  "terrain::warn" );
+    SG_LOG( FG_TERRAIN, SG_ALERT, "terrain::alert" );
 
     int i = 12345;
     long l = 54321L;
     double d = 3.14159;
     string s = "Hello world!";
 
-    FG_LOG( FG_EVENT, FG_INFO, "event::info "
+    SG_LOG( SG_EVENT, SG_INFO, "event::info "
 				 << "i=" << i
 				 << ", l=" << l
 				 << ", d=" << d
@@ -25,7 +25,7 @@ main( int argc, char* argv[] )
 				 << ", s=\"" << s << "\"" );
 
     // This shouldn't appear in log output:
-    FG_LOG( FG_EVENT, FG_DEBUG, "event::debug "
+    SG_LOG( SG_EVENT, SG_DEBUG, "event::debug "
 	    << "- this should be seen - "
 	    << "d=" << d
 	    << ", s=\"" << s << "\"" );

simgear/ephemeris/Makefile.am

@@ -1,19 +1,34 @@
-noinst_LIBRARIES = libAstro.a
+includedir = @includedir@/ephemeris
 
-libAstro_a_SOURCES = \
-	celestialBody.cxx celestialBody.hxx \
-	jupiter.cxx jupiter.hxx \
-	mars.cxx mars.hxx \
-	mercury.cxx mercury.hxx \
-	moon.cxx moon.hxx \
-	neptune.cxx neptune.hxx \
+lib_LIBRARIES = libsgephem.a
+
+include_HEADERS = \
+	celestialBody.hxx \
+        ephemeris.hxx \
+	jupiter.hxx \
+	mars.hxx \
+	mercury.hxx \
+	moonpos.hxx \
+	neptune.hxx \
+	saturn.hxx \
+	star.hxx \
+	stardata.hxx \
+	uranus.hxx \
+	venus.hxx
+
+libsgephem_a_SOURCES = \
+	celestialBody.cxx \
+	ephemeris.cxx \
+	jupiter.cxx \
+	mars.cxx \
+	mercury.cxx \
+	moonpos.cxx \
+	neptune.cxx \
 	pluto.hxx \
-	saturn.cxx saturn.hxx \
-	sky.cxx sky.hxx \
-	solarsystem.cxx solarsystem.hxx \
-	star.cxx star.hxx \
-	stars.cxx stars.hxx \
-	uranus.cxx uranus.hxx \
-	venus.cxx venus.hxx
+	saturn.cxx \
+	star.cxx \
+	stardata.cxx \
+	uranus.cxx \
+	venus.cxx
 
-INCLUDES += -I$(top_builddir) -I$(top_builddir)/src
+INCLUDES += -I$(top_srcdir)

simgear/ephemeris/celestialBody.cxx

@@ -5,26 +5,27 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
 
 #include <simgear/debug/logstream.hxx>
 
-#ifdef FG_MATH_EXCEPTION_CLASH
+#ifdef SG_MATH_EXCEPTION_CLASH
 #  define exception c_exception
 #endif
 #include <math.h>
@@ -34,7 +35,7 @@
 
 
 /**************************************************************************
- * void CelestialBody::updatePosition(fgTIME *t, Star *ourSun)
+ * void CelestialBody::updatePosition(double mjd, Star *ourSun)
  *
  * Basically, this member function provides a general interface for 
  * calculating the right ascension and declinaion. This function is 
@@ -45,25 +46,25 @@
  * position is calculated an a slightly different manner.  
  *
  * arguments:
- * fgTIME t: provides the current time.
+ * double mjd: provides the modified julian date.
  * Star *ourSun: the sun's position is needed to convert heliocentric 
  *               coordinates into geocentric coordinates.
  *
  * return value: none
  *
  *************************************************************************/
-void CelestialBody::updatePosition(FGTime *t, Star *ourSun)
+void CelestialBody::updatePosition(double mjd, Star *ourSun)
 {
   double eccAnom, v, ecl, actTime, 
     xv, yv, xh, yh, zh, xg, yg, zg, xe, ye, ze;
 
-  updateOrbElements(t);
-  actTime = fgCalcActTime(t);
+  updateOrbElements(mjd);
+  actTime = sgCalcActTime(mjd);
 
   // calcualate the angle bewteen ecliptic and equatorial coordinate system
-  ecl = DEG_TO_RAD * (23.4393 - 3.563E-7 *actTime);
+  ecl = SGD_DEGREES_TO_RADIANS * (23.4393 - 3.563E-7 *actTime);
   
-  eccAnom = fgCalcEccAnom(M, e);  //calculate the eccentric anomaly
+  eccAnom = sgCalcEccAnom(M, e);  //calculate the eccentric anomaly
   xv = a * (cos(eccAnom) - e);
   yv = a * (sqrt (1.0 - e*e) * sin(eccAnom));
   v = atan2(yv, xv);           // the planet's true anomaly
@@ -87,8 +88,8 @@ void CelestialBody::updatePosition(FGTime *t, Star *ourSun)
   ze = yg * sin(ecl) + zg * cos(ecl);
   rightAscension = atan2(ye, xe);
   declination = atan2(ze, sqrt(xe*xe + ye*ye));
-  FG_LOG(FG_GENERAL, FG_INFO, "Planet found at : " 
-	 << rightAscension << " (ra), " << declination << " (dec)" );
+  /* SG_LOG(SG_GENERAL, SG_INFO, "Planet found at : " 
+	 << rightAscension << " (ra), " << declination << " (dec)" ); */
 
   //calculate some variables specific to calculating the magnitude 
   //of the planet
@@ -106,11 +107,11 @@ void CelestialBody::updatePosition(FGTime *t, Star *ourSun)
       tmp = -1.0;
   }
 
-  FV = RAD_TO_DEG * acos( tmp );
-};
+  FV = SGD_RADIANS_TO_DEGREES * acos( tmp );
+}
 
 /****************************************************************************
- * double CelestialBody::fgCalcEccAnom(double M, double e)
+ * double CelestialBody::sgCalcEccAnom(double M, double e)
  * this private member calculates the eccentric anomaly of a celestial body, 
  * given its mean anomaly and eccentricity.
  * 
@@ -135,7 +136,7 @@ void CelestialBody::updatePosition(FGTime *t, Star *ourSun)
  * the eccentric anomaly
  *
  ****************************************************************************/
-double CelestialBody::fgCalcEccAnom(double M, double e)
+double CelestialBody::sgCalcEccAnom(double M, double e)
 {
   double 
     eccAnom, E0, E1, diff;
@@ -151,7 +152,7 @@ double CelestialBody::fgCalcEccAnom(double M, double e)
 	  diff = fabs(E0 - E1);
 	  E0 = E1;
 	}
-      while (diff > (DEG_TO_RAD * 0.001));
+      while (diff > (SGD_DEGREES_TO_RADIANS * 0.001));
       return E0;
     }
   return eccAnom;

simgear/ephemeris/celestialBody.hxx

@@ -5,19 +5,20 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
@@ -33,14 +34,12 @@
 
 #include <simgear/constants.h>
 
-#include <Time/fg_time.hxx>
-
 class Star;
 
 class CelestialBody
 {
-protected:              // make the data protected, in order to give the inherited
-                        // classes direct access to the data
+protected:              // make the data protected, in order to give the
+                        //  inherited classes direct access to the data
   double NFirst;       	/* longitude of the ascending node first part */
   double NSec;		/* longitude of the ascending node second part */
   double iFirst;       	/* inclination to the ecliptic first part */
@@ -61,9 +60,9 @@ protected:              // make the data protected, in order to give the inherit
   double magnitude;
   double lonEcl, latEcl;
 
-  double fgCalcEccAnom(double M, double e);
-  double fgCalcActTime(FGTime *t);
-  void updateOrbElements(FGTime *t);
+  double sgCalcEccAnom(double M, double e);
+  double sgCalcActTime(double mjd);
+  void updateOrbElements(double mjd);
 
 public:
   CelestialBody(double Nf, double Ns,
@@ -71,12 +70,21 @@ public:
 		double wf, double ws,
 		double af, double as,
 		double ef, double es,
-		double Mf, double Ms, FGTime *t);
+		double Mf, double Ms, double mjd);
+  CelestialBody(double Nf, double Ns,
+		double If, double Is,
+		double wf, double ws,
+		double af, double as,
+		double ef, double es,
+		double Mf, double Ms);
   void getPos(double *ra, double *dec);
   void getPos(double *ra, double *dec, double *magnitude);
+  double getRightAscension();
+  double getDeclination();
+  double getMagnitude();
   double getLon();
   double getLat(); 
-  void updatePosition(FGTime *t, Star *ourSun);
+  void updatePosition(double mjd, Star *ourSun);
 };
 
 /*****************************************************************************
@@ -104,7 +112,7 @@ inline CelestialBody::CelestialBody(double Nf, double Ns,
 				    double wf, double ws,
 				    double af, double as,
 				    double ef, double es,
-				    double Mf, double Ms, FGTime *t)
+				    double Mf, double Ms, double mjd)
 {
   NFirst = Nf;     NSec = Ns;
   iFirst = If;     iSec = Is;
@@ -112,30 +120,45 @@ inline CelestialBody::CelestialBody(double Nf, double Ns,
   aFirst = af;     aSec = as;
   eFirst = ef;     eSec = es;
   MFirst = Mf;     MSec = Ms;
-  updateOrbElements(t);
-};
+  updateOrbElements(mjd);
+}
+
+inline CelestialBody::CelestialBody(double Nf, double Ns,
+				    double If, double Is,
+				    double wf, double ws,
+				    double af, double as,
+				    double ef, double es,
+				    double Mf, double Ms)
+{
+  NFirst = Nf;     NSec = Ns;
+  iFirst = If;     iSec = Is;
+  wFirst = wf;     wSec = ws;
+  aFirst = af;     aSec = as;
+  eFirst = ef;     eSec = es;
+  MFirst = Mf;     MSec = Ms;
+}
 
 /****************************************************************************
- * inline void CelestialBody::updateOrbElements(FGTime *t)
+ * inline void CelestialBody::updateOrbElements(double mjd)
  * given the current time, this private member calculates the actual 
  * orbital elements
  *
- * Arguments: FGTime *t: the current time:
+ * Arguments: double mjd: the current modified julian date:
  *
  * return value: none
  ***************************************************************************/
-inline void CelestialBody::updateOrbElements(FGTime *t)
+inline void CelestialBody::updateOrbElements(double mjd)
 {
-  double actTime = fgCalcActTime(t);
-   M = DEG_TO_RAD * (MFirst + (MSec * actTime));
-   w = DEG_TO_RAD * (wFirst + (wSec * actTime));
-   N = DEG_TO_RAD * (NFirst + (NSec * actTime));
-   i = DEG_TO_RAD * (iFirst + (iSec * actTime));
+  double actTime = sgCalcActTime(mjd);
+   M = SGD_DEGREES_TO_RADIANS * (MFirst + (MSec * actTime));
+   w = SGD_DEGREES_TO_RADIANS * (wFirst + (wSec * actTime));
+   N = SGD_DEGREES_TO_RADIANS * (NFirst + (NSec * actTime));
+   i = SGD_DEGREES_TO_RADIANS * (iFirst + (iSec * actTime));
    e = eFirst + (eSec * actTime);
    a = aFirst + (aSec * actTime);
 }
 /*****************************************************************************
- * inline double CelestialBody::fgCalcActTime(FGTime *t)
+ * inline double CelestialBody::sgCalcActTime(double mjd)
  * this private member function returns the offset in days from the epoch for
  * wich the orbital elements are calculated (Jan, 1st, 2000).
  * 
@@ -143,9 +166,9 @@ inline void CelestialBody::updateOrbElements(FGTime *t)
  *
  * return value: the (fractional) number of days until Jan 1, 2000.
  ****************************************************************************/
-inline double CelestialBody::fgCalcActTime(FGTime *t)
+inline double CelestialBody::sgCalcActTime(double mjd)
 {
-  return (t->getMjd() - 36523.5);
+  return (mjd - 36523.5);
 }
 
 /*****************************************************************************
@@ -171,6 +194,10 @@ inline void CelestialBody::getPos(double* ra, double* dec, double* magn)
   *magn = magnitude;
 }
 
+inline double CelestialBody::getRightAscension() { return rightAscension; }
+inline double CelestialBody::getDeclination() { return declination; }
+inline double CelestialBody::getMagnitude() { return magnitude; }
+
 inline double CelestialBody::getLon()
 {
   return lonEcl;

simgear/ephemeris/ephemeris.cxx

@@ -0,0 +1,83 @@
+// ephemeris.cxx -- Top level class for calculating current positions of
+//                  astronomical objects
+//
+// Written by Curtis Olson, started March 2000.
+//
+// Copyright (C) 2000  Curtis L. Olson - curt@flightgear.org
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA  02111-1307, USA.
+//
+// $Id$
+
+
+#include "ephemeris.hxx"
+
+
+// Constructor
+SGEphemeris::SGEphemeris( const string &path ) {
+    our_sun = new Star;
+    moon = new MoonPos;
+    mercury = new Mercury;
+    venus = new Venus;
+    mars = new Mars;
+    jupiter = new Jupiter;
+    saturn = new Saturn;
+    uranus = new Uranus;
+    neptune = new Neptune;
+    stars = new SGStarData( SGPath(path) );
+}
+
+
+// Destructor
+SGEphemeris::~SGEphemeris( void ) {
+    delete our_sun;
+    delete moon;
+    delete mercury;
+    delete venus;
+    delete mars;
+    delete jupiter;
+    delete saturn;
+    delete uranus;
+    delete neptune;
+    delete stars;
+}
+
+
+// Update (recalculate) the positions of all objects for the specified
+// time
+void SGEphemeris::update( double mjd, double lst, double lat ) {
+    // update object positions
+    our_sun->updatePosition( mjd );
+    moon->updatePosition( mjd, lst, lat, our_sun );
+    mercury->updatePosition( mjd, our_sun );
+    venus->updatePosition( mjd, our_sun );
+    mars->updatePosition( mjd, our_sun );
+    jupiter->updatePosition( mjd, our_sun );
+    saturn->updatePosition( mjd, our_sun );
+    uranus->updatePosition( mjd, our_sun );
+    neptune->updatePosition( mjd, our_sun );
+
+    // update planets list
+    nplanets = 7;
+    mercury->getPos( &planets[0][0], &planets[0][1], &planets[0][2] );
+    venus  ->getPos( &planets[1][0], &planets[1][1], &planets[1][2] );
+    mars   ->getPos( &planets[2][0], &planets[2][1], &planets[2][2] );
+    jupiter->getPos( &planets[3][0], &planets[3][1], &planets[3][2] );
+    saturn ->getPos( &planets[4][0], &planets[4][1], &planets[4][2] );
+    uranus ->getPos( &planets[5][0], &planets[5][1], &planets[5][2] );
+    neptune->getPos( &planets[6][0], &planets[6][1], &planets[6][2] );
+}
+

simgear/ephemeris/ephemeris.hxx

@@ -0,0 +1,177 @@
+/** \file ephemeris.hxx
+ * Top level class for calculating current positions of astronomical objects.
+ */
+
+// Top level interface written by Curtis Olson, started March 2000.
+//
+// All the core code underneath this is written by Durk Talsma.  See
+// the headers of all the other individual files for details.
+//
+// Copyright (C) 2000  Curtis L. Olson - curt@flightgear.org
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA  02111-1307, USA.
+//
+// $Id$
+
+
+#ifndef _EPHEMERIS_HXX
+#define _EPHEMERIS_HXX
+
+
+#include <plib/sg.h>
+
+#include <simgear/ephemeris/star.hxx>
+#include <simgear/ephemeris/moonpos.hxx>
+#include <simgear/ephemeris/mercury.hxx>
+#include <simgear/ephemeris/venus.hxx>
+#include <simgear/ephemeris/mars.hxx>
+#include <simgear/ephemeris/jupiter.hxx>
+#include <simgear/ephemeris/saturn.hxx>
+#include <simgear/ephemeris/uranus.hxx>
+#include <simgear/ephemeris/neptune.hxx>
+#include <simgear/ephemeris/stardata.hxx>
+
+
+/** Ephemeris class
+ *
+ * Written by Durk Talsma <d.talsma@direct.a2000.nl> and Curtis Olson
+ * <curt@flightgear.org>
+ *
+ * Introduction 
+ *
+ * The SGEphemeris class computes and stores the positions of the Sun,
+ * the Moon, the planets, and the brightest stars.  These positions
+ * can then be used to accurately render the dominant visible items in
+ * the Earth's sky. Note, this class isn't intended for use in an
+ * interplanetary/interstellar/intergalactic type application. It is
+ * calculates everything relative to the Earth and is therefore best
+ * suited for Earth centric applications.
+ *
+ * The positions of the various astronomical objects are time
+ * dependent, so to maintain accuracy, you will need to periodically
+ * call the update() method. The SGTime class conveniently provides
+ * the two time related values you need to pass to the update()
+ * method.
+ */
+
+class SGEphemeris {
+
+    Star *our_sun;
+    MoonPos *moon;
+    Mercury *mercury;
+    Venus *venus;
+    Mars *mars;
+    Jupiter *jupiter;
+    Saturn *saturn;
+    Uranus *uranus;
+    Neptune *neptune;
+
+    // 9 planets, minus earth, minus pluto which we don't draw = 7
+    // planets[i][0] = Right Ascension
+    // planets[i][1] = Declination
+    // planets[i][2] = Magnitude
+    int nplanets;
+    sgdVec3 planets[7];
+
+    SGStarData *stars;
+
+public:
+
+    /**
+     * Constructor.
+     * This creates an instance of the SGEphemeris object. When
+     * calling the constructor you need to provide a path pointing to
+     * your star database file.
+     * @param path path to your star database */
+    SGEphemeris( const string &path );
+
+    /** Destructor */
+    ~SGEphemeris( void );
+
+    /**
+     * Update (recalculate) the positions of all objects for the
+     * specified time.  The update() method requires you to pass in
+     * the current modified Julian date, the current local sidereal
+     * time, and the current latitude. The update() method is designed
+     * to be called by the host application before every frame.
+     * @param mjd modified julian date
+     * @param lst current local sidereal time
+     * @param lat current latitude
+     */
+    void update(double mjd, double lst, double lat);
+
+    /**
+     * @return a pointer to a Star class containing all the positional
+     * information for Earth's Sun.
+     */
+    inline Star *get_sun() const { return our_sun; }
+
+    /** @return the right ascension of the Sun. */
+    inline double getSunRightAscension() const {
+	return our_sun->getRightAscension();
+    }
+
+    /** @return the declination of the Sun. */
+    inline double getSunDeclination() const {
+	return our_sun->getDeclination();
+    }
+
+    /**
+     * @return a pointer to a Moon class containing all the positional
+     * information for Earth's Moon.
+     */
+    inline MoonPos *get_moon() const { return moon; }
+
+    /** @return the right ascension of the Moon. */
+    inline double getMoonRightAscension() const {
+	return moon->getRightAscension();
+    }
+
+    /** @return the declination of the Moon. */
+    inline double getMoonDeclination() const {
+	return moon->getDeclination();
+    }
+
+    /** @return the numbers of defined planets. */
+    inline int getNumPlanets() const { return nplanets; }
+
+    /**
+     * Returns a pointer to an array of planet data in sgdVec3
+     * format. (See plib.sourceforge.net for information on plib and
+     * the ``sg'' package.) An sgdVec3 is a 3 element double
+     * array. The first element is the right ascension of the planet,
+     * the second is the declination, and the third is the magnitude.
+     * @return planets array
+     */
+    inline sgdVec3 *getPlanets() { return planets; }
+
+    /** @return the numbers of defined stars. */
+    inline int getNumStars() const { return stars->getNumStars(); }
+
+    /**
+     * Returns a pointer to an array of star data in sgdVec3
+     * format. An The first element of the sgdVec3 is the right
+     * ascension of the planet, the second is the declination, and the
+     * third is the magnitude.
+     * @returns star array
+     */
+    inline sgdVec3 *getStars() { return stars->getStars(); }
+};
+
+
+#endif // _EPHEMERIS_HXX
+
+

simgear/ephemeris/jupiter.cxx

@@ -5,19 +5,20 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
@@ -31,32 +32,42 @@
 #include "jupiter.hxx"
 
 /*************************************************************************
- * Jupiter::Jupiter(FGTime *t)
+ * Jupiter::Jupiter(double mjd)
  * Public constructor for class Jupiter
  * Argument: The current time.
  * the hard coded orbital elements for Jupiter are passed to 
  * CelestialBody::CelestialBody();
  ************************************************************************/
-Jupiter::Jupiter(FGTime *t) :
+Jupiter::Jupiter(double mjd) :
   CelestialBody(100.4542,  2.7685400E-5,	
 		1.3030,   -1.557E-7,
 		273.8777,  1.6450500E-5,
 		5.2025600, 0.000000,
 		0.048498,  4.469E-9,
-		19.89500,  0.08308530010, t)
+		19.89500,  0.08308530010, mjd)
+{
+}
+
+Jupiter::Jupiter() :
+  CelestialBody(100.4542,  2.7685400E-5,	
+		1.3030,   -1.557E-7,
+		273.8777,  1.6450500E-5,
+		5.2025600, 0.000000,
+		0.048498,  4.469E-9,
+		19.89500,  0.08308530010)
 {
 }
 
 /*************************************************************************
- * void Jupiter::updatePosition(FGTime *t, Star *ourSun)
+ * void Jupiter::updatePosition(double mjd, Star *ourSun)
  * 
  * calculates the current position of Jupiter, by calling the base class,
  * CelestialBody::updatePosition(); The current magnitude is calculated using 
  * a Jupiter specific equation
  *************************************************************************/
-void Jupiter::updatePosition(FGTime *t, Star *ourSun)
+void Jupiter::updatePosition(double mjd, Star *ourSun)
 {
-  CelestialBody::updatePosition(t, ourSun);
+  CelestialBody::updatePosition(mjd, ourSun);
   magnitude = -9.25 + 5*log10( r*R ) + 0.014 * FV;
 }
 

simgear/ephemeris/jupiter.hxx

@@ -5,34 +5,35 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
 #ifndef _JUPITER_HXX_
 #define _JUPITER_HXX_
 
-#include <Time/fg_time.hxx>
-#include "celestialBody.hxx"
-#include "star.hxx"
+#include <simgear/ephemeris/celestialBody.hxx>
+#include <simgear/ephemeris/star.hxx>
 
 class Jupiter : public CelestialBody
 {
 public:
-  Jupiter (FGTime *t);
-  void updatePosition(FGTime *t, Star *ourSun);
+  Jupiter (double mjd);
+  Jupiter ();
+  void updatePosition(double mjd, Star *ourSun);
 };
 
 #endif // _JUPITER_HXX_

simgear/ephemeris/mars.cxx

@@ -5,19 +5,20 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
@@ -30,30 +31,39 @@
 #include "mars.hxx"
 
 /*************************************************************************
- * Mars::Mars(FGTime *t)
+ * Mars::Mars(double mjd)
  * Public constructor for class Mars
  * Argument: The current time.
  * the hard coded orbital elements for Mars are passed to 
  * CelestialBody::CelestialBody();
  ************************************************************************/
-Mars::Mars(FGTime *t) :
+Mars::Mars(double mjd) :
   CelestialBody(49.55740,  2.1108100E-5,
 		1.8497,   -1.78E-8,
 		286.5016,  2.9296100E-5,
 		1.5236880, 0.000000,
 		0.093405,  2.516E-9,
-		18.60210,  0.52402077660, t)
+		18.60210,  0.52402077660, mjd)
+{
+}
+Mars::Mars() :
+  CelestialBody(49.55740,  2.1108100E-5,
+		1.8497,   -1.78E-8,
+		286.5016,  2.9296100E-5,
+		1.5236880, 0.000000,
+		0.093405,  2.516E-9,
+		18.60210,  0.52402077660)
 {
 }
 /*************************************************************************
- * void Mars::updatePosition(FGTime *t, Star *ourSun)
+ * void Mars::updatePosition(double mjd, Star *ourSun)
  * 
  * calculates the current position of Mars, by calling the base class,
  * CelestialBody::updatePosition(); The current magnitude is calculated using 
  * a Mars specific equation
  *************************************************************************/
-void Mars::updatePosition(FGTime *t, Star *ourSun)
+void Mars::updatePosition(double mjd, Star *ourSun)
 {
-  CelestialBody::updatePosition(t, ourSun);
+  CelestialBody::updatePosition(mjd, ourSun);
   magnitude = -1.51 + 5*log10( r*R ) + 0.016 * FV;
 }

simgear/ephemeris/mars.hxx

@@ -5,34 +5,35 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
 #ifndef _MARS_HXX_
 #define _MARS_HXX_
 
-#include <Time/fg_time.hxx>
-#include "celestialBody.hxx"
-#include "star.hxx"
+#include <simgear/ephemeris/celestialBody.hxx>
+#include <simgear/ephemeris/star.hxx>
 
 class Mars : public CelestialBody
 {
 public:
-  Mars ( FGTime *t);
-  void updatePosition(FGTime *t, Star *ourSun);
+  Mars ( double mjd );
+  Mars ();
+  void updatePosition(double mjd, Star *ourSun);
 };
 
 #endif // _MARS_HXX_

simgear/ephemeris/mercury.cxx

@@ -5,19 +5,20 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
@@ -30,31 +31,40 @@
 #include "mercury.hxx"
 
 /*************************************************************************
- * Mercury::Mercury(FGTime *t)
+ * Mercury::Mercury(double mjd)
  * Public constructor for class Mercury
  * Argument: The current time.
  * the hard coded orbital elements for Mercury are passed to 
  * CelestialBody::CelestialBody();
  ************************************************************************/
-Mercury::Mercury(FGTime *t) :
+Mercury::Mercury(double mjd) :
   CelestialBody (48.33130,   3.2458700E-5,
                   7.0047,    5.00E-8,
                   29.12410,  1.0144400E-5,
                   0.3870980, 0.000000,
                   0.205635,  5.59E-10,
-                  168.6562,  4.09233443680, t)
+                  168.6562,  4.09233443680, mjd)
+{
+}
+Mercury::Mercury() :
+  CelestialBody (48.33130,   3.2458700E-5,
+                  7.0047,    5.00E-8,
+                  29.12410,  1.0144400E-5,
+                  0.3870980, 0.000000,
+                  0.205635,  5.59E-10,
+                  168.6562,  4.09233443680)
 {
 }
 /*************************************************************************
- * void Mercury::updatePosition(FGTime *t, Star *ourSun)
+ * void Mercury::updatePosition(double mjd, Star *ourSun)
  * 
  * calculates the current position of Mercury, by calling the base class,
  * CelestialBody::updatePosition(); The current magnitude is calculated using 
  * a Mercury specific equation
  *************************************************************************/
-void Mercury::updatePosition(FGTime *t, Star *ourSun)
+void Mercury::updatePosition(double mjd, Star *ourSun)
 {
-  CelestialBody::updatePosition(t, ourSun);
+  CelestialBody::updatePosition(mjd, ourSun);
   magnitude = -0.36 + 5*log10( r*R ) + 0.027 * FV + 2.2E-13 * pow(FV, 6); 
 }
 

simgear/ephemeris/mercury.hxx

@@ -5,34 +5,35 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
 #ifndef _MERCURY_HXX_
 #define _MERCURY_HXX_
 
-#include <Time/fg_time.hxx>
-#include "celestialBody.hxx"
-#include "star.hxx"
+#include <simgear/ephemeris/celestialBody.hxx>
+#include <simgear/ephemeris/star.hxx>
 
 class Mercury : public CelestialBody
 {
 public:
-  Mercury ( FGTime *t);
-  void updatePosition(FGTime *t, Star* ourSun);
+  Mercury (double mjd);
+  Mercury ();
+  void updatePosition(double mjd, Star* ourSun);
 };
 
 #endif // _MERURY_HXX_

simgear/ephemeris/moon.cxx

@@ -1,398 +0,0 @@
-/**************************************************************************
- * moon.cxx
- * Written by Durk Talsma. Originally started October 1997, for distribution  
- * with the FlightGear project. Version 2 was written in August and 
- * September 1998. This code is based upon algorithms and data kindly 
- * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * $Id$
- **************************************************************************/
-
-
-#include <string.h>
-
-#include <simgear/debug/logstream.hxx>
-#include <simgear/misc/fgpath.hxx>
-
-#include <Main/options.hxx>
-#include <Objects/texload.h>
-
-#ifdef __BORLANDC__
-#  define exception c_exception
-#endif
-#include <math.h>
-
-#include <FDM/flight.hxx>
-
-#include "moon.hxx"
-
-/*************************************************************************
- * Moon::Moon(FGTime *t)
- * Public constructor for class Moon. Initializes the orbital elements and 
- * sets up the moon texture.
- * Argument: The current time.
- * the hard coded orbital elements for Moon are passed to 
- * CelestialBody::CelestialBody();
- ************************************************************************/
-Moon::Moon(FGTime *t) :
-  CelestialBody(125.1228, -0.0529538083,
-		5.1454,    0.00000,
-		318.0634,  0.1643573223,
-		60.266600, 0.000000,
-		0.054900,  0.000000,
-		115.3654,  13.0649929509, t)
-{
-  int width, height;
-  
-  FG_LOG( FG_GENERAL, FG_INFO, "Initializing Moon Texture");
-#ifdef GL_VERSION_1_1
-  xglGenTextures(1, &moon_texid);
-  xglBindTexture(GL_TEXTURE_2D, moon_texid);
-#elif GL_EXT_texture_object
-  xglGenTexturesEXT(1, &moon_texid);
-  xglBindTextureEXT(GL_TEXTURE_2D, moon_texid);
-#else
-#  error port me
-#endif
-
-  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-
-  // load in the texture data
-  FGPath tpath( current_options.get_fg_root() );
-  tpath.append( "Textures" );
-  tpath.append( "moon.rgb" );
-
-  if ( (moon_texbuf = read_rgb_texture(tpath.c_str(), &width, &height)) 
-       == NULL )
-  {
-    // Try compressed
-    FGPath fg_tpath = tpath;
-    fg_tpath.append( ".gz" );
-    if ( (moon_texbuf = read_rgb_texture(fg_tpath.c_str(), &width, &height)) 
-	 == NULL )
-    {
-	FG_LOG( FG_GENERAL, FG_ALERT, 
-		"Error in loading moon texture " << tpath.str() );
-	exit(-1);
-    } 
-  } 
-
-  glTexImage2D( GL_TEXTURE_2D,
-		0,
-		GL_RGB,
-		256, 256,
-		0,
-		GL_RGB, GL_UNSIGNED_BYTE,
-		moon_texbuf);
-
-  // setup the halo texture
-  FG_LOG( FG_GENERAL, FG_INFO, "Initializing Moon Texture");
-#ifdef GL_VERSION_1_1
-  xglGenTextures(1, &moon_halotexid);
-  xglBindTexture(GL_TEXTURE_2D, moon_halotexid);
-#elif GL_EXT_texture_object
-  xglGenTexturesEXT(1, &moon_halotexid);
-  xglBindTextureEXT(GL_TEXTURE_2D, moon_halotexid);
-#else
-#  error port me
-#endif
-
-  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-  setHalo();
-  glTexImage2D( GL_TEXTURE_2D,
-		0,
-		GL_RGBA,
-		256, 256,
-		0,
-		GL_RGBA, GL_UNSIGNED_BYTE,
-		moon_halotexbuf);
-  moonObject = gluNewQuadric();
-}
-
-Moon::~Moon()
-{
-  //delete moonObject;
-  delete moon_texbuf;
-  delete moon_halotexbuf;
-}
-
-
-static int texWidth = 256;	/* 64x64 is plenty */
-
-void Moon::setHalo()
-{
-  int texSize;
-  //void *textureBuf;
-  GLubyte *p;
-  int i,j;
-  double radius;
-  
-  texSize = texWidth*texWidth;
-  
-  moon_halotexbuf = new GLubyte[texSize*4];
-  if (!moon_halotexbuf) 
-    return;  // Ugly!
-  
-  p = moon_halotexbuf;
-  
-  radius = (double)(texWidth / 2);
-  
-  for (i=0; i < texWidth; i++) {
-    for (j=0; j < texWidth; j++) {
-      double x, y, d;
-      
-      *p = 0xff;
-      *(p+1) = 0xff;
-      *(p+2) = 0xff;
-	  
-      x = fabs((double)(i - (texWidth / 2)));
-      y = fabs((double)(j - (texWidth / 2)));
-
-      d = sqrt((x * x) + (y * y));
-      if (d < radius) {
-	  double t = 1.0 - (d / radius); // t is 1.0 at center, 0.0 at edge */
-	  // inverse square looks nice 
-	  *(p+3) = (int)((double) 0x20 * (t*t));
-      } else {
-	  *(p+3) = 0x00;
-      }
-      p += 4;
-    }
-  }
-  //gluBuild2DMipmaps(GL_TEXTURE_2D, 1, texWidth, texWidth, 
-  //	    GL_LUMINANCE,
-  //	    GL_UNSIGNED_BYTE, textureBuf);
-  //free(textureBuf);
-}
-
-
-/*****************************************************************************
- * void Moon::updatePosition(FGTime *t, Star *ourSun)
- * this member function calculates the actual topocentric position (i.e.) 
- * the position of the moon as seen from the current position on the surface
- * of the moon. 
- ****************************************************************************/
-void Moon::updatePosition(FGTime *t, Star *ourSun)
-{
-  double 
-    eccAnom, ecl, actTime,
-    xv, yv, v, r, xh, yh, zh, xg, yg, zg, xe, ye, ze,
-    Ls, Lm, D, F, mpar, gclat, rho, HA, g,
-    geoRa, geoDec;
-  
-  fgAIRCRAFT *air;
-  FGInterface *f;
-
-  air = &current_aircraft;
-  f = air->fdm_state;
- 
-  updateOrbElements(t);
-  actTime = fgCalcActTime(t);
-
-  // calculate the angle between ecliptic and equatorial coordinate system
-  // in Radians
-  ecl = ((DEG_TO_RAD * 23.4393) - (DEG_TO_RAD * 3.563E-7) * actTime);  
-  eccAnom = fgCalcEccAnom(M, e);  // Calculate the eccentric anomaly
-  xv = a * (cos(eccAnom) - e);
-  yv = a * (sqrt(1.0 - e*e) * sin(eccAnom));
-  v = atan2(yv, xv);               // the moon's true anomaly
-  r = sqrt (xv*xv + yv*yv);       // and its distance
-  
-  // estimate the geocentric rectangular coordinates here
-  xh = r * (cos(N) * cos (v+w) - sin (N) * sin(v+w) * cos(i));
-  yh = r * (sin(N) * cos (v+w) + cos (N) * sin(v+w) * cos(i));
-  zh = r * (sin(v+w) * sin(i));
-
-  // calculate the ecliptic latitude and longitude here
-  lonEcl = atan2 (yh, xh);
-  latEcl = atan2(zh, sqrt(xh*xh + yh*yh));
-
-  /* Calculate a number of perturbatioin, i.e. disturbances caused by the 
-   * gravitational infuence of the sun and the other major planets.
-   * The largest of these even have a name */
-  Ls = ourSun->getM() + ourSun->getw();
-  Lm = M + w + N;
-  D = Lm - Ls;
-  F = Lm - N;
-  
-  lonEcl += DEG_TO_RAD * (-1.274 * sin (M - 2*D)
-			  +0.658 * sin (2*D)
-			  -0.186 * sin(ourSun->getM())
-			  -0.059 * sin(2*M - 2*D)
-			  -0.057 * sin(M - 2*D + ourSun->getM())
-			  +0.053 * sin(M + 2*D)
-			  +0.046 * sin(2*D - ourSun->getM())
-			  +0.041 * sin(M - ourSun->getM())
-			  -0.035 * sin(D)
-			  -0.031 * sin(M + ourSun->getM())
-			  -0.015 * sin(2*F - 2*D)
-			  +0.011 * sin(M - 4*D)
-			  );
-  latEcl += DEG_TO_RAD * (-0.173 * sin(F-2*D)
-			  -0.055 * sin(M - F - 2*D)
-			  -0.046 * sin(M + F - 2*D)
-			  +0.033 * sin(F + 2*D)
-			  +0.017 * sin(2*M + F)
-			  );
-  r += (-0.58 * cos(M - 2*D)
-	-0.46 * cos(2*D)
-	);
-  FG_LOG(FG_GENERAL, FG_INFO, "Running moon update");
-  xg = r * cos(lonEcl) * cos(latEcl);
-  yg = r * sin(lonEcl) * cos(latEcl);
-  zg = r *               sin(latEcl);
-  
-  xe = xg;
-  ye = yg * cos(ecl) -zg * sin(ecl);
-  ze = yg * sin(ecl) +zg * cos(ecl);
-
-  geoRa  = atan2(ye, xe);
-  geoDec = atan2(ze, sqrt(xe*xe + ye*ye));
-
-  /* FG_LOG( FG_GENERAL, FG_INFO, 
-	  "(geocentric) geoRa = (" << (RAD_TO_DEG * geoRa) 
-	  << "), geoDec= (" << (RAD_TO_DEG * geoDec) << ")" ); */
-
-
-  // Given the moon's geocentric ra and dec, calculate its 
-  // topocentric ra and dec. i.e. the position as seen from the
-  // surface of the earth, instead of the center of the earth
-
-  // First calculate the moon's parrallax, that is, the apparent size of the 
-  // (equatorial) radius of the earth, as seen from the moon 
-  mpar = asin ( 1 / r);
-  // FG_LOG( FG_GENERAL, FG_INFO, "r = " << r << " mpar = " << mpar );
-  // FG_LOG( FG_GENERAL, FG_INFO, "lat = " << f->get_Latitude() );
-
-  gclat = f->get_Latitude() - 0.003358 * 
-      sin (2 * DEG_TO_RAD * f->get_Latitude() );
-  // FG_LOG( FG_GENERAL, FG_INFO, "gclat = " << gclat );
-
-  rho = 0.99883 + 0.00167 * cos(2 * DEG_TO_RAD * f->get_Latitude());
-  // FG_LOG( FG_GENERAL, FG_INFO, "rho = " << rho );
-  
-  if (geoRa < 0)
-    geoRa += (2*FG_PI);
-  
-  HA = t->getLst() - (3.8197186 * geoRa);
-  /* FG_LOG( FG_GENERAL, FG_INFO, "t->getLst() = " << t->getLst() 
-	  << " HA = " << HA ); */
-
-  g = atan (tan(gclat) / cos ((HA / 3.8197186)));
-  // FG_LOG( FG_GENERAL, FG_INFO, "g = " << g );
-
-  rightAscension = geoRa - mpar * rho * cos(gclat) * sin(HA) / cos (geoDec);
-  declination = geoDec - mpar * rho * sin (gclat) * sin (g - geoDec) / sin(g);
-
-  /* FG_LOG( FG_GENERAL, FG_INFO, 
-	  "Ra = (" << (RAD_TO_DEG *rightAscension) 
-	  << "), Dec= (" << (RAD_TO_DEG *declination) << ")" ); */
-}
-
-
-/************************************************************************
- * void Moon::newImage()
- *
- * This function regenerates a new visual image of the moon, which is added to
- * solarSystem display list.
- *
- * Arguments: Right Ascension and declination
- *
- * return value: none
- **************************************************************************/
-void Moon::newImage()
-{
-  fgLIGHT *l = &cur_light_params;
-  float moon_angle = l->moon_angle;
-  
-  /*double x_2, x_4, x_8, x_10;
-  GLfloat ambient;
-  GLfloat amb[4];*/
-  int moonSize = 550;
-
-  GLfloat moonColor[4] = {0.85, 0.75, 0.35, 1.0};
-  GLfloat black[4] = {0.0, 0.0, 0.0, 1.0};
-  GLfloat white[4] = {1.0, 1.0, 1.0, 0.0};
-  
-  if( moon_angle*RAD_TO_DEG < 100 ) 
-    {
-      FG_LOG( FG_ASTRO, FG_INFO, "Generating Moon Image" );
-
-      xglPushMatrix();
-      {
-	xglRotatef(((RAD_TO_DEG * rightAscension)- 90.0), 0.0, 0.0, 1.0);
-	xglRotatef((RAD_TO_DEG * declination), 1.0, 0.0, 0.0);
-	
-	FG_LOG( FG_GENERAL, FG_INFO, 
-		"Ra = (" << (RAD_TO_DEG *rightAscension) 
-		<< "), Dec= (" << (RAD_TO_DEG *declination) << ")" );
-	xglTranslatef(0.0, 60000.0, 0.0);
-	glEnable(GL_BLEND);	// BLEND ENABLED
-
-	// Draw the halo...
-	if (current_options.get_textures())
-	  {
-	    // glBlendFunc(GL_SRC_ALPHA, GL_ONE);
-	    glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
-	    glEnable(GL_TEXTURE_2D); // TEXTURE ENABLED
-	    glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);  
-	    glBindTexture(GL_TEXTURE_2D, moon_halotexid);
-	  
-	    glBegin(GL_QUADS);
-	    glTexCoord2f(0.0f, 0.0f); glVertex3f(-5000, 0.0, -5000);
-	    glTexCoord2f(1.0f, 0.0f); glVertex3f( 5000, 0.0, -5000);
-	    glTexCoord2f(1.0f, 1.0f); glVertex3f( 5000, 0.0,  5000);
-	    glTexCoord2f(0.0f, 1.0f); glVertex3f(-5000, 0.0,  5000);
-	    glEnd();
-	  }
-	
-	xglEnable(GL_LIGHTING);	// LIGHTING ENABLED
-	xglEnable( GL_LIGHT0 );
-	// set lighting parameters
-	xglLightfv(GL_LIGHT0, GL_AMBIENT, white );
-	xglLightfv(GL_LIGHT0, GL_DIFFUSE, white );
-	// Enable( GL_CULL_FACE );
-	xglMaterialfv(GL_FRONT, GL_AMBIENT, black);
-	xglMaterialfv(GL_FRONT, GL_DIFFUSE, moonColor); 
-	//glEnable(GL_TEXTURE_2D);
-	
-	glBlendFunc(GL_ONE, GL_ONE);
-	
-	//glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); 
-	// Draw the moon-proper
-	
-	if (current_options.get_textures())
-	  {
-	    glBindTexture(GL_TEXTURE_2D, moon_texid);                         
-	    gluQuadricTexture(moonObject, GL_TRUE );
-	  }
-	gluSphere(moonObject,  moonSize, 12, 12 );
-	glDisable(GL_TEXTURE_2D); // TEXTURE DISABLED
-	glDisable(GL_BLEND);	// BLEND DISABLED
-      }
-      xglPopMatrix();
-      glDisable(GL_LIGHTING);	// Lighting Disabled.
-      
-    }
-  else
-    {
-    }
-}

simgear/ephemeris/moon.hxx

@@ -1,57 +0,0 @@
-/**************************************************************************
- * moon.hxx
- * Written by Durk Talsma. Originally started October 1997, for distribution  
- * with the FlightGear project. Version 2 was written in August and 
- * September 1998. This code is based upon algorithms and data kindly 
- * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * $Id$
- **************************************************************************/
-#ifndef _MOON_HXX_
-#define _MOON_HXX_
-
-#include <simgear/constants.h>
-
-#include <Aircraft/aircraft.hxx>
-#include <Main/views.hxx>
-#include <Time/fg_time.hxx>
-
-#include "celestialBody.hxx"
-#include "star.hxx"
-
-class Moon : public CelestialBody
-{
-private:
-  void TexInit();  // This should move to the constructor eventually.
-
-  GLUquadricObj *moonObject;
-  GLuint Sphere;
-  GLuint moon_texid;
-  GLuint moon_halotexid;
-  GLubyte *moon_texbuf;
-  GLubyte *moon_halotexbuf;
-  
-  void setHalo();
-public:
-  Moon ( FGTime *t);
-  ~Moon();
-  void updatePosition(FGTime *t, Star *ourSun);
-  void newImage();
-};
-
-
-#endif // _MOON_HXX_

simgear/ephemeris/moonpos.cxx

@@ -0,0 +1,200 @@
+/**************************************************************************
+ * moonpos.cxx
+ * Written by Durk Talsma. Originally started October 1997, for distribution  
+ * with the FlightGear project. Version 2 was written in August and 
+ * September 1998. This code is based upon algorithms and data kindly 
+ * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
+ *
+ * $Id$
+ **************************************************************************/
+
+
+#include <string.h>
+
+#include <simgear/debug/logstream.hxx>
+
+#ifdef __BORLANDC__
+#  define exception c_exception
+#endif
+#include <math.h>
+
+// #include <FDM/flight.hxx>
+
+#include "moonpos.hxx"
+
+
+/*************************************************************************
+ * MoonPos::MoonPos(double mjd)
+ * Public constructor for class MoonPos. Initializes the orbital elements and 
+ * sets up the moon texture.
+ * Argument: The current time.
+ * the hard coded orbital elements for MoonPos are passed to 
+ * CelestialBody::CelestialBody();
+ ************************************************************************/
+MoonPos::MoonPos(double mjd) :
+  CelestialBody(125.1228, -0.0529538083,
+		5.1454,    0.00000,
+		318.0634,  0.1643573223,
+		60.266600, 0.000000,
+		0.054900,  0.000000,
+		115.3654,  13.0649929509, mjd)
+{
+}
+
+MoonPos::MoonPos() :
+  CelestialBody(125.1228, -0.0529538083,
+		5.1454,    0.00000,
+		318.0634,  0.1643573223,
+		60.266600, 0.000000,
+		0.054900,  0.000000,
+		115.3654,  13.0649929509)
+{
+}
+
+
+MoonPos::~MoonPos()
+{
+}
+
+
+/*****************************************************************************
+ * void MoonPos::updatePosition(double mjd, Star *ourSun)
+ * this member function calculates the actual topocentric position (i.e.) 
+ * the position of the moon as seen from the current position on the surface
+ * of the moon. 
+ ****************************************************************************/
+void MoonPos::updatePosition(double mjd, double lst, double lat, Star *ourSun)
+{
+  double 
+    eccAnom, ecl, actTime,
+    xv, yv, v, r, xh, yh, zh, xg, yg, zg, xe, ye, ze,
+    Ls, Lm, D, F, mpar, gclat, rho, HA, g,
+    geoRa, geoDec;
+  
+  updateOrbElements(mjd);
+  actTime = sgCalcActTime(mjd);
+
+  // calculate the angle between ecliptic and equatorial coordinate system
+  // in Radians
+  ecl = ((SGD_DEGREES_TO_RADIANS * 23.4393) - (SGD_DEGREES_TO_RADIANS * 3.563E-7) * actTime);  
+  eccAnom = sgCalcEccAnom(M, e);  // Calculate the eccentric anomaly
+  xv = a * (cos(eccAnom) - e);
+  yv = a * (sqrt(1.0 - e*e) * sin(eccAnom));
+  v = atan2(yv, xv);               // the moon's true anomaly
+  r = sqrt (xv*xv + yv*yv);       // and its distance
+  
+  // estimate the geocentric rectangular coordinates here
+  xh = r * (cos(N) * cos (v+w) - sin (N) * sin(v+w) * cos(i));
+  yh = r * (sin(N) * cos (v+w) + cos (N) * sin(v+w) * cos(i));
+  zh = r * (sin(v+w) * sin(i));
+
+  // calculate the ecliptic latitude and longitude here
+  lonEcl = atan2 (yh, xh);
+  latEcl = atan2(zh, sqrt(xh*xh + yh*yh));
+
+  /* Calculate a number of perturbatioin, i.e. disturbances caused by the 
+   * gravitational infuence of the sun and the other major planets.
+   * The largest of these even have a name */
+  Ls = ourSun->getM() + ourSun->getw();
+  Lm = M + w + N;
+  D = Lm - Ls;
+  F = Lm - N;
+  
+  lonEcl += SGD_DEGREES_TO_RADIANS * (-1.274 * sin (M - 2*D)
+			  +0.658 * sin (2*D)
+			  -0.186 * sin(ourSun->getM())
+			  -0.059 * sin(2*M - 2*D)
+			  -0.057 * sin(M - 2*D + ourSun->getM())
+			  +0.053 * sin(M + 2*D)
+			  +0.046 * sin(2*D - ourSun->getM())
+			  +0.041 * sin(M - ourSun->getM())
+			  -0.035 * sin(D)
+			  -0.031 * sin(M + ourSun->getM())
+			  -0.015 * sin(2*F - 2*D)
+			  +0.011 * sin(M - 4*D)
+			  );
+  latEcl += SGD_DEGREES_TO_RADIANS * (-0.173 * sin(F-2*D)
+			  -0.055 * sin(M - F - 2*D)
+			  -0.046 * sin(M + F - 2*D)
+			  +0.033 * sin(F + 2*D)
+			  +0.017 * sin(2*M + F)
+			  );
+  r += (-0.58 * cos(M - 2*D)
+	-0.46 * cos(2*D)
+	);
+  // SG_LOG(SG_GENERAL, SG_INFO, "Running moon update");
+  xg = r * cos(lonEcl) * cos(latEcl);
+  yg = r * sin(lonEcl) * cos(latEcl);
+  zg = r *               sin(latEcl);
+  
+  xe = xg;
+  ye = yg * cos(ecl) -zg * sin(ecl);
+  ze = yg * sin(ecl) +zg * cos(ecl);
+
+  geoRa  = atan2(ye, xe);
+  geoDec = atan2(ze, sqrt(xe*xe + ye*ye));
+
+  /* SG_LOG( SG_GENERAL, SG_INFO, 
+	  "(geocentric) geoRa = (" << (SGD_RADIANS_TO_DEGREES * geoRa) 
+	  << "), geoDec= (" << (SGD_RADIANS_TO_DEGREES * geoDec) << ")" ); */
+
+
+  // Given the moon's geocentric ra and dec, calculate its 
+  // topocentric ra and dec. i.e. the position as seen from the
+  // surface of the earth, instead of the center of the earth
+
+  // First calculate the moon's parrallax, that is, the apparent size of the 
+  // (equatorial) radius of the earth, as seen from the moon 
+  mpar = asin ( 1 / r);
+  // SG_LOG( SG_GENERAL, SG_INFO, "r = " << r << " mpar = " << mpar );
+  // SG_LOG( SG_GENERAL, SG_INFO, "lat = " << f->get_Latitude() );
+
+  gclat = lat - 0.003358 * 
+      sin (2 * SGD_DEGREES_TO_RADIANS * lat );
+  // SG_LOG( SG_GENERAL, SG_INFO, "gclat = " << gclat );
+
+  rho = 0.99883 + 0.00167 * cos(2 * SGD_DEGREES_TO_RADIANS * lat);
+  // SG_LOG( SG_GENERAL, SG_INFO, "rho = " << rho );
+  
+  if (geoRa < 0)
+    geoRa += (2*SGD_PI);
+  
+  HA = lst - (3.8197186 * geoRa);
+  /* SG_LOG( SG_GENERAL, SG_INFO, "t->getLst() = " << t->getLst() 
+	  << " HA = " << HA ); */
+
+  g = atan (tan(gclat) / cos ((HA / 3.8197186)));
+  // SG_LOG( SG_GENERAL, SG_INFO, "g = " << g );
+
+  rightAscension = geoRa - mpar * rho * cos(gclat) * sin(HA) / cos (geoDec);
+  if (fabs(lat) > 0) {
+      declination
+	  = geoDec - mpar * rho * sin (gclat) * sin (g - geoDec) / sin(g);
+  } else {
+      declination = geoDec;
+      // cerr << "Geocentric vs. Topocentric position" << endl;
+      // cerr << "RA (difference)  : "
+      //      << SGD_RADIANS_TO_DEGREES * (geoRa - rightAscension) << endl;
+      // cerr << "Dec (difference) : "
+      //      << SGD_RADIANS_TO_DEGREES * (geoDec - declination) << endl;
+  }
+
+  /* SG_LOG( SG_GENERAL, SG_INFO, 
+	  "Ra = (" << (SGD_RADIANS_TO_DEGREES *rightAscension) 
+	  << "), Dec= (" << (SGD_RADIANS_TO_DEGREES *declination) << ")" ); */
+}

simgear/ephemeris/moonpos.hxx

@@ -0,0 +1,61 @@
+/**************************************************************************
+ * moonpos.hxx
+ * Written by Durk Talsma. Originally started October 1997, for distribution  
+ * with the FlightGear project. Version 2 was written in August and 
+ * September 1998. This code is based upon algorithms and data kindly 
+ * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
+ *
+ * $Id$
+ **************************************************************************/
+#ifndef _MOONPOS_HXX_
+#define _MOONPOS_HXX_
+
+
+#include <simgear/constants.h>
+
+#include <simgear/ephemeris/celestialBody.hxx>
+#include <simgear/ephemeris/star.hxx>
+
+
+class MoonPos : public CelestialBody
+{
+
+private:
+
+    // void TexInit();  // This should move to the constructor eventually.
+
+    // GLUquadricObj *moonObject;
+    // GLuint Sphere;
+    // GLuint moon_texid;
+    // GLuint moon_halotexid;
+    // GLubyte *moon_texbuf;
+    // GLubyte *moon_halotexbuf;
+  
+    // void setHalo();
+
+public:
+
+    MoonPos(double mjd);
+    MoonPos();
+    ~MoonPos();
+    void updatePosition(double mjd, double lst, double lat, Star *ourSun);
+    // void newImage();
+};
+
+
+#endif // _MOONPOS_HXX_

simgear/ephemeris/neptune.cxx

@@ -5,19 +5,20 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
@@ -30,30 +31,39 @@
 #include "neptune.hxx"
 
 /*************************************************************************
- * Neptune::Neptune(FGTime *t)
+ * Neptune::Neptune(double mjd)
  * Public constructor for class Neptune
  * Argument: The current time.
  * the hard coded orbital elements for Neptune are passed to 
  * CelestialBody::CelestialBody();
  ************************************************************************/
-Neptune::Neptune(FGTime *t) :
+Neptune::Neptune(double mjd) :
   CelestialBody(131.7806,   3.0173000E-5,
 		1.7700,	   -2.550E-7,
 		272.8461,  -6.027000E-6,	
 		30.058260,  3.313E-8,
 		0.008606,   2.150E-9,
-		260.2471,   0.00599514700, t)
+		260.2471,   0.00599514700, mjd)
+{
+}
+Neptune::Neptune() :
+  CelestialBody(131.7806,   3.0173000E-5,
+		1.7700,	   -2.550E-7,
+		272.8461,  -6.027000E-6,	
+		30.058260,  3.313E-8,
+		0.008606,   2.150E-9,
+		260.2471,   0.00599514700)
 {
 }
 /*************************************************************************
- * void Neptune::updatePosition(FGTime *t, Star *ourSun)
+ * void Neptune::updatePosition(double mjd, Star *ourSun)
  * 
  * calculates the current position of Neptune, by calling the base class,
  * CelestialBody::updatePosition(); The current magnitude is calculated using 
  * a Neptune specific equation
  *************************************************************************/
-void Neptune::updatePosition(FGTime *t, Star *ourSun)
+void Neptune::updatePosition(double mjd, Star *ourSun)
 {
-  CelestialBody::updatePosition(t, ourSun);
+  CelestialBody::updatePosition(mjd, ourSun);
   magnitude = -6.90 + 5*log10 (r*R) + 0.001 *FV;
 }

simgear/ephemeris/neptune.hxx

@@ -5,34 +5,35 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
 #ifndef _NEPTUNE_HXX_
 #define _NEPTUNE_HXX_
 
-#include <Time/fg_time.hxx>
-#include "celestialBody.hxx"
-#include "star.hxx"
+#include <simgear/ephemeris/celestialBody.hxx>
+#include <simgear/ephemeris/star.hxx>
 
 class Neptune : public CelestialBody
 {
 public:
-  Neptune ( FGTime *t);
-  void updatePosition(FGTime *t, Star *ourSun);
+  Neptune (double mjd);
+  Neptune ();
+  void updatePosition(double mjd, Star *ourSun);
 };
 
 #endif // _NEPTUNE_HXX_

simgear/ephemeris/pluto.hxx

@@ -5,32 +5,33 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
 #ifndef _PLUTO_HXX_
 #define _PLUTO_HXX_
 
-#include <Time/fg_time.hxx>
 #include "celestialBody.hxx"
 
 class Pluto : public CelestialBody
 {
 public:
-  Pluto ( FGTime t);
+  Pluto (double mjd);
+  Pluto ();
 };
 
 #endif // _PLUTO_HXX_

simgear/ephemeris/saturn.cxx

@@ -5,19 +5,20 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
@@ -30,34 +31,43 @@
 #include "saturn.hxx"
 
 /*************************************************************************
- * Saturn::Saturn(FGTime *t)
+ * Saturn::Saturn(double mjd)
  * Public constructor for class Saturn
  * Argument: The current time.
  * the hard coded orbital elements for Saturn are passed to 
  * CelestialBody::CelestialBody();
  ************************************************************************/
-Saturn::Saturn(FGTime *t) :
+Saturn::Saturn(double mjd) :
   CelestialBody(113.6634,   2.3898000E-5,
 		2.4886,	   -1.081E-7,
 		339.3939,   2.9766100E-5,
 		9.5547500,  0.000000,
 		0.055546,  -9.499E-9,
-		316.9670,   0.03344422820, t)
+		316.9670,   0.03344422820, mjd)
+{
+}
+Saturn::Saturn() :
+  CelestialBody(113.6634,   2.3898000E-5,
+		2.4886,	   -1.081E-7,
+		339.3939,   2.9766100E-5,
+		9.5547500,  0.000000,
+		0.055546,  -9.499E-9,
+		316.9670,   0.03344422820)
 {
 }
 
 /*************************************************************************
- * void Saturn::updatePosition(FGTime *t, Star *ourSun)
+ * void Saturn::updatePosition(double mjd, Star *ourSun)
  * 
  * calculates the current position of Saturn, by calling the base class,
  * CelestialBody::updatePosition(); The current magnitude is calculated using 
  * a Saturn specific equation
  *************************************************************************/
-void Saturn::updatePosition(FGTime *t, Star *ourSun)
+void Saturn::updatePosition(double mjd, Star *ourSun)
 {
-  CelestialBody::updatePosition(t, ourSun);
+  CelestialBody::updatePosition(mjd, ourSun);
   
-  double actTime = fgCalcActTime(t);
+  double actTime = sgCalcActTime(mjd);
   double ir = 0.4897394;
   double Nr = 2.9585076 + 6.6672E-7*actTime;
   double B = asin (sin(declination) * cos(ir) - 

simgear/ephemeris/saturn.hxx

@@ -5,34 +5,35 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
 #ifndef _SATURN_HXX_
 #define _SATURN_HXX_
 
-#include <Time/fg_time.hxx>
-#include "celestialBody.hxx"
-#include "star.hxx"
+#include <simgear/ephemeris/celestialBody.hxx>
+#include <simgear/ephemeris/star.hxx>
 
 class Saturn : public CelestialBody
 {
 public:
-  Saturn ( FGTime *t);
-  void updatePosition(FGTime *t, Star *ourSun);
+  Saturn (double mjd);
+  Saturn ();
+  void updatePosition(double mjd, Star *ourSun);
 };
 
 #endif // _SATURN_HXX_

simgear/ephemeris/sky.cxx

@@ -1,377 +0,0 @@
-// sky.cxx -- model sky with an upside down "bowl"
-//
-// Written by Curtis Olson, started December 1997.
-//
-// Copyright (C) 1997  Curtis L. Olson  - curt@infoplane.com
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-
-
-#ifdef HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
-#ifdef HAVE_WINDOWS_H
-#  include <windows.h>
-#endif
-
-#include <math.h>
-
-#include <GL/glut.h>
-#include <simgear/xgl/xgl.h>
-
-#include <simgear/constants.h>
-#include <simgear/debug/logstream.hxx>
-#include <simgear/math/fg_random.h>
-
-#include <Aircraft/aircraft.hxx>
-#include <FDM/flight.hxx>
-#include <Main/views.hxx>
-#include <Time/event.hxx>
-#include <Time/fg_time.hxx>
-
-#include "sky.hxx"
-
-
-#ifdef __MWERKS__
-#  pragma global_optimizer off
-#endif
-
-
-// in meters of course
-#define CENTER_ELEV   25000.0
-
-#define INNER_RADIUS  50000.0
-#define INNER_ELEV    20000.0
-
-#define MIDDLE_RADIUS 70000.0
-#define MIDDLE_ELEV    8000.0
-
-#define OUTER_RADIUS  80000.0
-#define OUTER_ELEV        0.0
-
-#define BOTTOM_RADIUS 50000.0
-#define BOTTOM_ELEV   -2000.0
-
-
-static float inner_vertex[12][3];
-static float middle_vertex[12][3];
-static float outer_vertex[12][3];
-static float bottom_vertex[12][3];
-
-static GLubyte inner_color[12][4];
-static GLubyte middle_color[12][4];
-static GLubyte outer_color[12][4];
-
-
-// Calculate the sky structure vertices
-void fgSkyVerticesInit( void ) {
-    float theta;
-    int i;
-
-    FG_LOG(FG_ASTRO, FG_INFO, "  Generating the sky dome vertices.");
-
-    for ( i = 0; i < 12; i++ ) {
-	theta = (i * 30.0) * DEG_TO_RAD;
-	
-	inner_vertex[i][0] = cos(theta) * INNER_RADIUS;
-	inner_vertex[i][1] = sin(theta) * INNER_RADIUS;
-	inner_vertex[i][2] = INNER_ELEV;
-	
-	// printf("    %.2f %.2f\n", cos(theta) * INNER_RADIUS, 
-	//        sin(theta) * INNER_RADIUS);
-
-	middle_vertex[i][0] = cos((double)theta) * MIDDLE_RADIUS;
-	middle_vertex[i][1] = sin((double)theta) * MIDDLE_RADIUS;
-	middle_vertex[i][2] = MIDDLE_ELEV;
-	    
-	outer_vertex[i][0] = cos((double)theta) * OUTER_RADIUS;
-	outer_vertex[i][1] = sin((double)theta) * OUTER_RADIUS;
-	outer_vertex[i][2] = OUTER_ELEV;
-	    
-	bottom_vertex[i][0] = cos((double)theta) * BOTTOM_RADIUS;
-	bottom_vertex[i][1] = sin((double)theta) * BOTTOM_RADIUS;
-	bottom_vertex[i][2] = BOTTOM_ELEV;
-    }
-}
-
-
-// (Re)calculate the sky colors at each vertex
-void fgSkyColorsInit( void ) {
-    fgLIGHT *l;
-    double sun_angle, diff;
-    double outer_param[3], outer_amt[3], outer_diff[3];
-    double middle_param[3], middle_amt[3], middle_diff[3];
-    int i, j;
-
-    l = &cur_light_params;
-
-    FG_LOG( FG_ASTRO, FG_INFO, 
-	    "  Generating the sky colors for each vertex." );
-
-    // setup for the possibility of sunset effects
-    sun_angle = l->sun_angle * RAD_TO_DEG;
-    // fgPrintf( FG_ASTRO, FG_INFO, 
-    //           "  Sun angle in degrees = %.2f\n", sun_angle);
-
-    if ( (sun_angle > 80.0) && (sun_angle < 100.0) ) {
-	// 0.0 - 0.4
-	outer_param[0] = (10.0 - fabs(90.0 - sun_angle)) / 20.0;
-	outer_param[1] = (10.0 - fabs(90.0 - sun_angle)) / 40.0;
-	outer_param[2] = -(10.0 - fabs(90.0 - sun_angle)) / 30.0;
-	// outer_param[2] = 0.0;
-
-	middle_param[0] = (10.0 - fabs(90.0 - sun_angle)) / 40.0;
-	middle_param[1] = (10.0 - fabs(90.0 - sun_angle)) / 80.0;
-	middle_param[2] = 0.0;
-
-	outer_diff[0] = outer_param[0] / 6.0;
-	outer_diff[1] = outer_param[1] / 6.0;
-	outer_diff[2] = outer_param[2] / 6.0;
-
-	middle_diff[0] = middle_param[0] / 6.0;
-	middle_diff[1] = middle_param[1] / 6.0;
-	middle_diff[2] = middle_param[2] / 6.0;
-    } else {
-	outer_param[0] = outer_param[1] = outer_param[2] = 0.0;
-	middle_param[0] = middle_param[1] = middle_param[2] = 0.0;
-
-	outer_diff[0] = outer_diff[1] = outer_diff[2] = 0.0;
-	middle_diff[0] = middle_diff[1] = middle_diff[2] = 0.0;
-    }
-    // printf("  outer_red_param = %.2f  outer_red_diff = %.2f\n", 
-    //        outer_red_param, outer_red_diff);
-
-    // calculate transition colors between sky and fog
-    for ( j = 0; j < 3; j++ ) {
-	outer_amt[j] = outer_param[j];
-	middle_amt[j] = middle_param[j];
-    }
-
-    for ( i = 0; i < 6; i++ ) {
-	for ( j = 0; j < 3; j++ ) {
-	    diff = l->sky_color[j] - l->fog_color[j];
-
-	    // printf("sky = %.2f  fog = %.2f  diff = %.2f\n", 
-	    //        l->sky_color[j], l->fog_color[j], diff);
-
-	    inner_color[i][j] = (GLubyte)((l->sky_color[j] - diff * 0.3) * 255);
-	    middle_color[i][j] = (GLubyte)((l->sky_color[j] - diff * 0.9 
-					   + middle_amt[j]) * 255);
-	    outer_color[i][j] = (GLubyte)((l->fog_color[j] + outer_amt[j]) 
-					  * 255);
-
-	    if ( inner_color[i][j] > 255 ) { inner_color[i][j] = 255; }
-	    if ( inner_color[i][j] < 25 ) { inner_color[i][j] = 25; }
-	    if ( middle_color[i][j] > 255 ) { middle_color[i][j] = 255; }
-	    if ( middle_color[i][j] < 25 ) { middle_color[i][j] = 25; }
-	    if ( outer_color[i][j] > 255 ) { outer_color[i][j] = 255; }
-	    if ( outer_color[i][j] < 25 ) { outer_color[i][j] = 25; }
-	}
-	inner_color[i][3] = middle_color[i][3] = outer_color[i][3] = 
-	    (GLubyte)(l->sky_color[3] * 255);
-
-	for ( j = 0; j < 3; j++ ) {
-	    outer_amt[j] -= outer_diff[j];
-	    middle_amt[j] -= middle_diff[j];
-	}
-
-	/*
-	printf("inner_color[%d] = %.2f %.2f %.2f %.2f\n", i, inner_color[i][0],
-	       inner_color[i][1], inner_color[i][2], inner_color[i][3]);
-	printf("middle_color[%d] = %.2f %.2f %.2f %.2f\n", i, 
-	       middle_color[i][0], middle_color[i][1], middle_color[i][2], 
-	       middle_color[i][3]);
-	printf("outer_color[%d] = %.2f %.2f %.2f %.2f\n", i, 
-	       outer_color[i][0], outer_color[i][1], outer_color[i][2], 
-	       outer_color[i][3]);
-	*/
-    }
-
-    for ( j = 0; j < 3; j++ ) {
-	outer_amt[j] = 0.0;
-	middle_amt[j] = 0.0;
-    }
-
-    for ( i = 6; i < 12; i++ ) {
-
-	for ( j = 0; j < 3; j++ ) {
-	    diff = l->sky_color[j] - l->fog_color[j];
-
-	    // printf("sky = %.2f  fog = %.2f  diff = %.2f\n", 
-	    //        l->sky_color[j], l->fog_color[j], diff);
-
-	    inner_color[i][j] = (GLubyte)((l->sky_color[j] - diff * 0.3) * 255);
-	    middle_color[i][j] = (GLubyte)((l->sky_color[j] - diff * 0.9 
-					    + middle_amt[j]) * 255);
-	    outer_color[i][j] = (GLubyte)((l->fog_color[j] + outer_amt[j]) 
-					  * 255);
-
-	    if ( inner_color[i][j] > 255 ) { inner_color[i][j] = 255; }
-	    if ( inner_color[i][j] < 25 ) { inner_color[i][j] = 25; }
-	    if ( middle_color[i][j] > 255 ) { middle_color[i][j] = 255; }
-	    if ( middle_color[i][j] < 25 ) { middle_color[i][j] = 25; }
-	    if ( outer_color[i][j] > 255 ) { outer_color[i][j] = 255; }
-	    if ( outer_color[i][j] < 35 ) { outer_color[i][j] = 35; }
-	}
-	inner_color[i][3] = middle_color[i][3] = outer_color[i][3] = 
-	    (GLubyte)(l->sky_color[3] * 255);
-
-	for ( j = 0; j < 3; j++ ) {
-	    outer_amt[j] += outer_diff[j];
-	    middle_amt[j] += middle_diff[j];
-	}
-
-	/*
-	printf("inner_color[%d] = %.2f %.2f %.2f %.2f\n", i, inner_color[i][0],
-	       inner_color[i][1], inner_color[i][2], inner_color[i][3]);
-	printf("middle_color[%d] = %.2f %.2f %.2f %.2f\n", i, 
-	       middle_color[i][0], middle_color[i][1], middle_color[i][2], 
-	       middle_color[i][3]);
-	printf("outer_color[%d] = %.2f %.2f %.2f %.2f\n", i, 
-	       outer_color[i][0], outer_color[i][1], outer_color[i][2], 
-	       outer_color[i][3]);
-	*/
-    }
-}
-
-
-// Initialize the sky structure and colors
-void fgSkyInit( void ) {
-    FG_LOG( FG_ASTRO, FG_INFO, "Initializing the sky" );
-
-    fgSkyVerticesInit();
-
-    // regester fgSkyColorsInit() as an event to be run periodically
-    global_events.Register( "fgSkyColorsInit()", fgSkyColorsInit, 
-		            fgEVENT::FG_EVENT_READY, 30000);
-}
-
-
-// Draw the Sky
-void fgSkyRender( void ) {
-    FGInterface *f;
-    fgLIGHT *l;
-    GLubyte sky_color[4];
-    GLubyte inner_color[4];
-    GLubyte middle_color[4];
-    GLubyte outer_color[4];
-    double diff;
-    int i;
-
-    f = current_aircraft.fdm_state;
-    l = &cur_light_params;
-
-    // printf("Rendering the sky.\n");
-
-    // calculate the proper colors
-    for ( i = 0; i < 3; i++ ) {
-	diff = l->sky_color[i] - l->adj_fog_color[i];
-
-	// printf("sky = %.2f  fog = %.2f  diff = %.2f\n", 
-	//        l->sky_color[j], l->adj_fog_color[j], diff);
-
-	inner_color[i] = (GLubyte)((l->sky_color[i] - diff * 0.3) * 255);
-	middle_color[i] = (GLubyte)((l->sky_color[i] - diff * 0.9) * 255);
-	outer_color[i] = (GLubyte)(l->adj_fog_color[i] * 255);
-    }
-    inner_color[3] = middle_color[3] = outer_color[3] = 
-	(GLubyte)(l->adj_fog_color[3] * 255);
-
-    xglPushMatrix();
-
-    // Translate to view position
-    Point3D zero_elev = current_view.get_cur_zero_elev();
-    xglTranslatef( zero_elev.x(), zero_elev.y(), zero_elev.z() );
-    // printf("  Translated to %.2f %.2f %.2f\n", 
-    //        zero_elev.x, zero_elev.y, zero_elev.z );
-
-    // Rotate to proper orientation
-    // printf("  lon = %.2f  lat = %.2f\n", FG_Longitude * RAD_TO_DEG,
-    //        FG_Latitude * RAD_TO_DEG);
-    xglRotatef( f->get_Longitude() * RAD_TO_DEG, 0.0, 0.0, 1.0 );
-    xglRotatef( 90.0 - f->get_Latitude() * RAD_TO_DEG, 0.0, 1.0, 0.0 );
-    xglRotatef( l->sun_rotation * RAD_TO_DEG, 0.0, 0.0, 1.0 );
-
-    // Draw inner/center section of sky*/
-    xglBegin( GL_TRIANGLE_FAN );
-    for ( i = 0; i < 4; i++ ) {
-	sky_color[i] = (GLubyte)(l->sky_color[i] * 255);
-    }
-    xglColor4fv(l->sky_color);
-    xglVertex3f(0.0, 0.0, CENTER_ELEV);
-    for ( i = 11; i >= 0; i-- ) {
-	xglColor4ubv( inner_color );
-	xglVertex3fv( inner_vertex[i] );
-    }
-    xglColor4ubv( inner_color );
-    xglVertex3fv( inner_vertex[11] );
-    xglEnd();
-
-    // Draw the middle ring
-    xglBegin( GL_TRIANGLE_STRIP );
-    for ( i = 0; i < 12; i++ ) {
-	xglColor4ubv( middle_color );
-	// printf("middle_color[%d] = %.2f %.2f %.2f %.2f\n", i, 
-	//        middle_color[i][0], middle_color[i][1], middle_color[i][2], 
-	//        middle_color[i][3]);
-	// xglColor4f(1.0, 0.0, 0.0, 1.0);
-	xglVertex3fv( middle_vertex[i] );
-	xglColor4ubv( inner_color );
-	// printf("inner_color[%d] = %.2f %.2f %.2f %.2f\n", i, 
-	//        inner_color[i][0], inner_color[i][1], inner_color[i][2], 
-	//        inner_color[i][3]);
-	// xglColor4f(0.0, 0.0, 1.0, 1.0);
-	xglVertex3fv( inner_vertex[i] );
-    }
-    xglColor4ubv( middle_color );
-    // xglColor4f(1.0, 0.0, 0.0, 1.0);
-    xglVertex3fv( middle_vertex[0] );
-    xglColor4ubv( inner_color );
-    // xglColor4f(0.0, 0.0, 1.0, 1.0);
-    xglVertex3fv( inner_vertex[0] );
-    xglEnd();
-
-    // Draw the outer ring
-    xglBegin( GL_TRIANGLE_STRIP );
-    for ( i = 0; i < 12; i++ ) {
-	xglColor4ubv( outer_color );
-	xglVertex3fv( outer_vertex[i] );
-	xglColor4ubv( middle_color );
-	xglVertex3fv( middle_vertex[i] );
-    }
-    xglColor4ubv( outer_color );
-    xglVertex3fv( outer_vertex[0] );
-    xglColor4ubv( middle_color );
-    xglVertex3fv( middle_vertex[0] );
-    xglEnd();
-
-    // Draw the bottom skirt
-    xglBegin( GL_TRIANGLE_STRIP );
-    xglColor4ubv( outer_color );
-    for ( i = 0; i < 12; i++ ) {
-	xglVertex3fv( bottom_vertex[i] );
-	xglVertex3fv( outer_vertex[i] );
-    }
-    xglVertex3fv( bottom_vertex[0] );
-    xglVertex3fv( outer_vertex[0] );
-    xglEnd();
-
-    xglPopMatrix();
-}
-
-

simgear/ephemeris/sky.hxx

@@ -1,53 +0,0 @@
-// sky.hxx -- model sky with an upside down "bowl"
-//
-// Written by Curtis Olson, started December 1997.
-//
-// Copyright (C) 1997  Curtis L. Olson  - curt@infoplane.com
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-
-
-#ifndef _SKY_HXX
-#define _SKY_HXX
-
-
-#ifndef __cplusplus                                                          
-# error This library requires C++
-#endif                                   
-
-
-#include <plib/ssg.h>		// plib include
-
-
-class fgSky : ssgLeaf
-{
-};
-
-
-// (Re)generate the display list
-void fgSkyInit( void );
-
-// (Re)calculate the sky colors at each vertex
-void fgSkyColorsInit( void );
-
-// Draw the Sky
-void fgSkyRender( void );
-
-
-#endif // _SKY_HXX
-
-

simgear/ephemeris/solarsystem.cxx

@@ -1,217 +0,0 @@
-/**************************************************************************
- * solarsystem.cxx
- * Written by Durk Talsma. Originally started October 1997, for distribution  
- * with the FlightGear project. Version 2 was written in August and 
- * September 1998. This code is based upon algorithms and data kindly 
- * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * $Id$
- **************************************************************************/
-
-#ifdef HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
-#ifdef HAVE_WINDOWS_H
-#  include <windows.h>
-#endif
-
-#ifdef __BORLANDC__
-#  define exception c_exception
-#endif
-#include <math.h>
-
-#include <GL/glut.h>
-#include <simgear/xgl/xgl.h>
-
-#include <simgear/debug/logstream.hxx>
-
-#include <Time/sunpos.hxx>
-#include <Time/moonpos.hxx>
-#include "solarsystem.hxx"
-
-/***************************************************************************
- * default constructor for class  SolarSystem:   
- * or course there can only be one way to create an entire solar system -:) )
- * the FGTime argument is needed to properly initialize the the current orbital
- * elements
- *************************************************************************/
-SolarSystem::SolarSystem(FGTime *t)
-{
-  if (theSolarSystem)
-    {
-      FG_LOG( FG_GENERAL, FG_ALERT, "Error: only one solarsystem allowed" );
-      exit(-1);
-    }
-  theSolarSystem = this;
-  ourSun     = new Star(t);   
-  earthsMoon = new Moon(t);
-  mercury    = new Mercury(t);
-  venus      = new Venus(t);
-  mars       = new Mars(t);
-  jupiter    = new Jupiter(t);
-  saturn     = new Saturn(t);
-  uranus     = new Uranus(t);
-  neptune    = new Neptune(t);
-
-  displayList = 0;
-};
-
-/**************************************************************************
- * the destructor for class SolarSystem;
- **************************************************************************/
-SolarSystem::~SolarSystem()
-{
-  delete ourSun;
-  delete earthsMoon;
-  delete mercury;
-  delete venus;
-  delete mars;
-  delete jupiter;
-  delete saturn;
-  delete uranus;
-  delete neptune;
-}
-/****************************************************************************
- * void SolarSystem::rebuild()
- *
- * this member function updates the positions for the sun, moon, and planets,
- * and then rebuilds the display list. 
- *
- * arguments: none
- * return value: none
- ***************************************************************************/
-void SolarSystem::rebuild()
-{
-  //fgLIGHT *l = &cur_light_params;
-  FGTime *t = FGTime::cur_time_params;  
-  //float x, y, z;
-  //double sun_angle;
-  double ra, dec;
-  //double x_2, x_4, x_8, x_10;*/
-  double magnitude;
-  //GLfloat ambient;
-  //GLfloat amb[4];
-  
-  glDisable(GL_LIGHTING);
-
-  // Step 1: update all the positions
-  ourSun->updatePosition(t);
-  earthsMoon->updatePosition(t, ourSun);
-  mercury->updatePosition(t, ourSun);
-  venus->updatePosition(t, ourSun);
-  mars->updatePosition(t, ourSun);
-  jupiter->updatePosition(t, ourSun);
-  saturn->updatePosition(t, ourSun);
-  uranus->updatePosition(t, ourSun);
-  neptune->updatePosition(t, ourSun);
-  
-  fgUpdateSunPos();   // get the right sun angle (especially important when 
-                      // running for the first time).
-  fgUpdateMoonPos();
-
-  if (displayList)
-    xglDeleteLists(displayList, 1);
-
-  displayList = xglGenLists(1);
-
-  FG_LOG( FG_ASTRO, FG_INFO, "Rebuilding astro display list" );
-
-  // Step 2: rebuild the display list
-  xglNewList( displayList, GL_COMPILE);
-  {
-    // Step 2a: Add the moon...
-    // Not that it is preferred to draw the moon first, and the sun next, in order to mime a
-    // solar eclipse. This is yet untested though...
-    // Euhh, actually the ecplise doesn't work...
-
-    earthsMoon->newImage();
-    // Step 2b:  Add the sun
-    ourSun->newImage();
-    // Step 2c: Add the planets
-    xglBegin(GL_POINTS);
-    mercury->getPos(&ra, &dec, &magnitude);addPlanetToList(ra, dec, magnitude);
-    venus  ->getPos(&ra, &dec, &magnitude);addPlanetToList(ra, dec, magnitude);
-    mars   ->getPos(&ra, &dec, &magnitude);addPlanetToList(ra, dec, magnitude);
-    jupiter->getPos(&ra, &dec, &magnitude);addPlanetToList(ra, dec, magnitude);
-    saturn ->getPos(&ra, &dec, &magnitude);addPlanetToList(ra, dec, magnitude);
-    uranus ->getPos(&ra, &dec, &magnitude);addPlanetToList(ra, dec, magnitude);
-    neptune->getPos(&ra, &dec, &magnitude);addPlanetToList(ra, dec, magnitude);
-    xglEnd();
-    xglEnable(GL_LIGHTING);
-  }
-  xglEndList();
-}
-
-/*****************************************************************************
- * double SolarSystem::scaleMagnitude(double magn)
- * This private member function rescales the original magnitude, as used in the
- * astronomical sense of the word, into a value used by OpenGL to draw a 
- * convincing Star or planet
- * 
- * Argument: the astronomical magnitude
- *
- * return value: the rescaled magnitude
- ****************************************************************************/
-double SolarSystem::scaleMagnitude(double magn)
-{
-  double magnitude = (0.0 - magn) / 5.0 + 1.0;
-  magnitude = magnitude * 0.7 + (3 * 0.1);
-  if (magnitude > 1.0) magnitude = 1.0;
-  if (magnitude < 0.0) magnitude = 0.0;
-  return magnitude;
-}
-
-/***************************************************************************
- * void SolarSytem::addPlanetToList(double ra, double dec, double magn);
- *
- * This private member function first causes the magnitude to be properly
- * rescaled, and then adds the planet to the display list.
- * 
- * arguments: Right Ascension, declination, and magnitude
- *
- * return value: none
- **************************************************************************/
-void SolarSystem::addPlanetToList(double ra, double dec, double magn)
-{
-  double
-    magnitude = scaleMagnitude ( magn );
-
-  fgLIGHT *l = &cur_light_params;
-
-  if ((double) (l->sun_angle - FG_PI_2) > 
-      ((magnitude - 1.0) * - 20 * DEG_TO_RAD)) 
-    {
-      xglColor3f (magnitude, magnitude, magnitude);
-      xglVertex3f( 50000.0 * cos (ra) * cos (dec),
-		   50000.0 * sin (ra) * cos (dec),
-		   50000.0 * sin (dec));
-    }
-}
-
-
-SolarSystem* SolarSystem::theSolarSystem = 0;
-
-/******************************************************************************
- * void solarSystemRebuild()
- * this a just a wrapper function, provided for use as an interface to the 
- * event manager
- *****************************************************************************/
-void solarSystemRebuild()
-{
-  SolarSystem::theSolarSystem->rebuild();
-}

simgear/ephemeris/solarsystem.hxx

@@ -1,91 +0,0 @@
-/**************************************************************************
- * solarsystem.hxx
- * Written by Durk Talsma. Originally started October 1997, for distribution  
- * with the FlightGear project. Version 2 was written in August and 
- * September 1998. This code is based upon algorithms and data kindly 
- * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- *
- * $Id$
- **************************************************************************/
-#ifndef _SOLARSYSTEM_H_
-#define _SOLARSYSTEM_H_
-
-#include <Time/light.hxx>
-#include <Time/fg_time.hxx>
-#include <Main/views.hxx>
-
-#include "star.hxx"
-#include "moon.hxx"
-#include "mercury.hxx"
-#include "venus.hxx"
-#include "mars.hxx"
-#include "jupiter.hxx"
-#include "saturn.hxx"
-#include "uranus.hxx"
-#include "neptune.hxx"
-#include "pluto.hxx"
-
-
-class SolarSystem
-{
-private:
-  Star*    ourSun;
-  Moon*    earthsMoon;
-  Mercury* mercury;
-  Venus*   venus;
-  Mars*    mars;
-  Jupiter* jupiter;
-  Saturn*  saturn;
-  Uranus*  uranus;
-  Neptune* neptune;
-  //Pluto*   pluto;
-  
-  GLint displayList;
-  double scaleMagnitude(double magn);
-  void addPlanetToList(double ra, double dec, double magn);
-
-
-public:
-  SolarSystem(FGTime *t);
-  CelestialBody *getSun();
-  CelestialBody *getMoon();
-  ~SolarSystem();
-
-  static SolarSystem *theSolarSystem;  // thanks to Bernie Bright!
-  void rebuild();
-  friend void solarSystemRebuild();
-  void draw();
-};
-
-inline CelestialBody* SolarSystem::getSun()
-{
-  return ourSun;
-}
-
-inline CelestialBody* SolarSystem::getMoon()
-{
-  return earthsMoon;
-}
-
-inline void SolarSystem::draw()
-{
-  xglCallList(displayList);
-}
-  
-extern void solarSystemRebuild();
-
-#endif // _SOLARSYSTEM_H_

simgear/ephemeris/star.cxx

@@ -5,23 +5,25 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
 
+
 #ifdef __BORLANDC__
 #  define exception c_exception
 #endif
@@ -29,14 +31,11 @@
 
 #include <simgear/debug/logstream.hxx>
 
-#include <Time/sunpos.hxx>
-#include <Time/light.hxx>
-#include <Main/options.hxx>
-
 #include "star.hxx"
 
+
 /*************************************************************************
- * Star::Star(FGTime *t)
+ * Star::Star(double mjd)
  * Public constructor for class Star
  * Argument: The current time.
  * the hard coded orbital elements our sun are passed to 
@@ -44,121 +43,50 @@
  * note that the word sun is avoided, in order to prevent some compilation
  * problems on sun systems 
  ************************************************************************/
-Star::Star(FGTime *t) :
-  CelestialBody (0.000000,  0.0000000000,
-		 0.0000,    0.00000,
-		 282.9404,  4.7093500E-5,	
-		 1.0000000, 0.000000,	
-		 0.016709,  -1.151E-9,
-		 356.0470,  0.98560025850, t)
+Star::Star(double mjd) :
+    CelestialBody (0.000000,  0.0000000000,
+		   0.0000,    0.00000,
+		   282.9404,  4.7093500E-5,	
+		   1.0000000, 0.000000,	
+		   0.016709,  -1.151E-9,
+		   356.0470,  0.98560025850, mjd)
 {
-    
-  FG_LOG( FG_GENERAL, FG_INFO, "Initializing Sun Texture");
-#ifdef GL_VERSION_1_1
-  xglGenTextures(1, &sun_texid);
-  xglBindTexture(GL_TEXTURE_2D, sun_texid);
-#elif GL_EXT_texture_object
-  xglGenTexturesEXT(1, &sun_texid);
-  xglBindTextureEXT(GL_TEXTURE_2D, sun_texid);
-#else
-#  error port me
-#endif
+    distance = 0.0;
+}
 
-  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
-  glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
-  setTexture();
-  glTexImage2D( GL_TEXTURE_2D,
-		0,
-		GL_RGBA,
-		256, 256,
-		0,
-		GL_RGBA, GL_UNSIGNED_BYTE,
-		sun_texbuf);
-     
-  SunObject = gluNewQuadric();
-  if(SunObject == NULL)
-    {
-      printf("gluNewQuadric(SunObject) failed  !\n");
-      exit(0);
-    }
-  
-  //SunList = 0;
-  distance = 0.0;
+Star::Star() :
+    CelestialBody (0.000000,  0.0000000000,
+		   0.0000,    0.00000,
+		   282.9404,  4.7093500E-5,	
+		   1.0000000, 0.000000,	
+		   0.016709,  -1.151E-9,
+		   356.0470,  0.98560025850)
+{
+    distance = 0.0;
 }
 
 Star::~Star()
 {
-  //delete SunObject;
-  delete [] sun_texbuf;
 }
 
 
-
-static int texWidth = 256;	/* 64x64 is plenty */
-
-void Star::setTexture()
-{
-  int texSize;
-  //void *textureBuf;
-  GLubyte *p;
-  int i,j;
-  double radius;
-  
-  texSize = texWidth*texWidth;
-  
-  sun_texbuf = new GLubyte[texSize*4];
-  if (!sun_texbuf) 
-    return;  // Ugly!
-  
-  p = sun_texbuf;
-  
-  radius = (double)(texWidth / 2);
-  
-  for (i=0; i < texWidth; i++) {
-    for (j=0; j < texWidth; j++) {
-      double x, y, d;
-	    
-      *p = 0xff;
-      *(p+1) = 0xff;
-      *(p+2) = 0xff;
-
-      x = fabs((double)(i - (texWidth / 2)));
-      y = fabs((double)(j - (texWidth / 2)));
-
-      d = sqrt((x * x) + (y * y));
-      if (d < radius) {
-	  double t = 1.0 - (d / radius); // t is 1.0 at center, 0.0 at edge */
-	  // inverse square looks nice 
-	  *(p+3) = (int)((double) 0xff * (t*t));
-      } else {
-	  *(p+3) = 0x00;
-      }
-      p += 4;
-    }
-  }
-  //gluBuild2DMipmaps(GL_TEXTURE_2D, 1, texWidth, texWidth, 
-  //	    GL_LUMINANCE,
-  //	    GL_UNSIGNED_BYTE, textureBuf);
-  //free(textureBuf);
-}
 /*************************************************************************
- * void Jupiter::updatePosition(FGTime *t, Star *ourSun)
+ * void Star::updatePosition(double mjd, Star *ourSun)
  * 
  * calculates the current position of our sun.
  *************************************************************************/
-void Star::updatePosition(FGTime *t)
+void Star::updatePosition(double mjd)
 {
   double 
     actTime, eccAnom, 
     xv, yv, v, r,
     xe, ye, ze, ecl;
 
-  updateOrbElements(t);
+  updateOrbElements(mjd);
   
-  actTime = fgCalcActTime(t);
-  ecl = DEG_TO_RAD * (23.4393 - 3.563E-7 * actTime); // Angle in Radians
-  eccAnom = fgCalcEccAnom(M, e);  // Calculate the eccentric Anomaly (also known as solving Kepler's equation)
+  actTime = sgCalcActTime(mjd);
+  ecl = SGD_DEGREES_TO_RADIANS * (23.4393 - 3.563E-7 * actTime); // Angle in Radians
+  eccAnom = sgCalcEccAnom(M, e);  // Calculate the eccentric Anomaly (also known as solving Kepler's equation)
   
   xv = cos(eccAnom) - e;
   yv = sqrt (1.0 - e*e) * sin(eccAnom);
@@ -184,87 +112,3 @@ void Star::updatePosition(FGTime *t)
   rightAscension = atan2 (ye, xe);
   declination = atan2 (ze, sqrt (xe*xe + ye*ye));
 }
-  
-void Star::newImage(void)
-{
-  /*static float stars[3];
-  stars[0] = 0.0;
-  stars[1] = 0.0;
-  stars[2] = 1.0;*/
-
-  fgLIGHT *l = &cur_light_params;
-  float sun_angle = l->sun_angle;
-  
-  if( sun_angle*RAD_TO_DEG < 100 ) { // else no need to draw sun
-    
-    
-    double x_2, x_4, x_8, x_10;
-    GLfloat ambient;
-    GLfloat amb[4];
-    int sun_size = 550;
-    
-    // daily variation sun gets larger near horizon
-    /*if(sun_angle*RAD_TO_DEG > 84.0 && sun_angle*RAD_TO_DEG < 95)
-      {
-      double sun_grow = 9*fabs(94-sun_angle*RAD_TO_DEG);
-      sun_size = (int)(sun_size + sun_size * cos(sun_grow*DEG_TO_RAD));
-      }*/
-    x_2 = sun_angle * sun_angle;
-    x_4 = x_2 * x_2;
-    x_8 = x_4 * x_4;
-    x_10 = x_8 * x_2;
-    ambient = (float)(0.4 * pow (1.1, - x_10 / 30.0));
-    if (ambient < 0.3) ambient = 0.3;
-    if (ambient > 1.0) ambient = 1.0;
-    
-    amb[0] = ((ambient * 6.0)  - 1.0); // minimum value = 0.8
-    amb[1] = ((ambient * 11.0) - 3.0); // minimum value = 0.3
-    amb[2] = ((ambient * 12.0) - 3.6); // minimum value = 0.0
-    amb[3] = 1.00;
-    
-    if (amb[0] > 1.0) amb[0] = 1.0;
-    if (amb[1] > 1.0) amb[1] = 1.0;
-    if (amb[2] > 1.0) amb[2] = 1.0;
-    xglColor3fv(amb);
-    glPushMatrix();
-    {
-      xglRotatef(((RAD_TO_DEG * rightAscension)- 90.0), 0.0, 0.0, 1.0);
-      xglRotatef((RAD_TO_DEG * declination), 1.0, 0.0, 0.0);
-      xglTranslatef(0,60000,0);
-      if (current_options.get_textures())
-	{
-	  glEnable(GL_TEXTURE_2D); // TEXTURE ENABLED
-	  glEnable(GL_BLEND);	// BLEND ENABLED
-	  
-	  // glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
-	  glBlendFunc ( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ) ;
-	  glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);  
-	  glBindTexture(GL_TEXTURE_2D, sun_texid);
-
-	  glBegin(GL_QUADS);
-	  glTexCoord2f(0.0f, 0.0f); glVertex3f(-5000, 0.0, -5000);
-	  glTexCoord2f(1.0f, 0.0f); glVertex3f( 5000, 0.0, -5000);
-	  glTexCoord2f(1.0f, 1.0f); glVertex3f( 5000, 0.0,  5000);
-	  glTexCoord2f(0.0f, 1.0f); glVertex3f(-5000, 0.0,  5000);
-	  glEnd();
-	}
-      xglDisable(GL_TEXTURE_2D); // TEXTURE DISABLED
-      xglDisable(GL_BLEND);	// BLEND DISABLED
-    }
-
-    glPopMatrix();
-    glDisable(GL_LIGHTING);	// LIGHTING DISABLED
-    glDisable(GL_BLEND);	// BLEND DISABLED
-    glPushMatrix();
-    {     
-      xglRotatef(((RAD_TO_DEG * rightAscension)- 90.0), 0.0, 0.0, 1.0);
-      xglRotatef((RAD_TO_DEG * declination), 1.0, 0.0, 0.0);
-      xglColor4fv(amb);
-      xglTranslatef(0,60000,0);
-      gluSphere( SunObject,  sun_size, 10, 10 );
-      }
-    glPopMatrix();
-    glDisable(GL_TEXTURE_2D);	// TEXTURE DISABLED
-    glDisable(GL_BLEND);	// BLEND DISABLED  
-  }
-}

simgear/ephemeris/star.hxx

@@ -5,54 +5,50 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
 #ifndef _STAR_HXX_
 #define _STAR_HXX_
 
-#include <Time/fg_time.hxx>
-#include "celestialBody.hxx"
+
+#include <simgear/ephemeris/celestialBody.hxx>
 
 
 class Star : public CelestialBody
 {
+
 private:
-  //double longitude;  // the sun's true longitude - this is depreciated by
-                       // CelestialBody::lonEcl 
-  double xs, ys;     // the sun's rectangular geocentric coordinates
-  double distance;   // the sun's distance to the earth
-   GLUquadricObj *SunObject;
-  GLuint sun_texid;
-  GLubyte *sun_texbuf;
 
-  void setTexture();
+    double xs, ys;     // the sun's rectangular geocentric coordinates
+    double distance;   // the sun's distance to the earth
+
 public:
-  Star (FGTime *t);
-  ~Star();
-  void updatePosition(FGTime *t);
-  double getM();
-  double getw();
-  //double getLon();
-  double getxs();
-  double getys();
-  double getDistance();
-  void newImage();
-};
 
+    Star (double mjd);
+    Star ();
+    ~Star();
+    void updatePosition(double mjd);
+    double getM();
+    double getw();
+    double getxs();
+    double getys();
+    double getDistance();
+};
 
 
 inline double Star::getM()

simgear/ephemeris/stardata.cxx

@@ -0,0 +1,122 @@
+// stardata.cxx -- manage star data
+//
+// Written by Curtis Olson, started March 2000.
+//
+// Copyright (C) 2000  Curtis L. Olson - curt@flightgear.org
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA  02111-1307, USA.
+//
+// $Id$
+
+
+#include <simgear/debug/logstream.hxx>
+#include <simgear/misc/sgstream.hxx>
+
+#include "stardata.hxx"
+
+#if defined (_MSC_VER) || defined (SG_HAVE_NATIVE_SGI_COMPILERS)
+  SG_USING_STD(getline);
+#endif
+
+// Constructor
+SGStarData::SGStarData() {
+}
+
+SGStarData::SGStarData( SGPath path ) {
+    data_path = SGPath( path );
+    load();
+}
+
+
+// Destructor
+SGStarData::~SGStarData() {
+}
+
+
+bool SGStarData::load() {
+
+    // -dw- avoid local data > 32k error by dynamic allocation of the
+    // array, problem for some compilers
+    stars = new sgdVec3[SG_MAX_STARS];
+
+     // build the full path name to the stars data base file
+    data_path.append( "stars" );
+    SG_LOG( SG_ASTRO, SG_INFO, "  Loading stars from " << data_path.str() );
+
+    sg_gzifstream in( data_path.str() );
+    if ( ! in.is_open() ) {
+	SG_LOG( SG_ASTRO, SG_ALERT, "Cannot open star file: "
+		<< data_path.str() );
+	exit(-1);
+    }
+
+    double ra, dec, mag;
+    char c;
+    string name;
+
+    nstars = 0;
+
+    // read in each line of the file
+    while ( ! in.eof() && nstars < SG_MAX_STARS ) {
+	in >> skipcomment;
+
+        getline( in, name, ',' );
+	// cout << "  data = " << name << endl;
+
+	// read name and first comma
+	while ( in.get(c) ) {
+	    if ( (c != ' ') && (c != ',') ) {
+		// push back on the stream
+		in.putback(c);
+		break;
+	    }
+	}
+
+	in >> ra;
+
+	// read past optional comma
+	while ( in.get(c) ) {
+	    if ( (c != ' ') && (c != ',') ) {
+		// push back on the stream
+		in.putback(c);
+		break;
+	    }
+	}
+
+	in >> dec;
+
+	// read past optional comma
+	while ( in.get(c) ) {
+	    if ( (c != ' ') && (c != ',') ) {
+		// push back on the stream
+		in.putback(c);
+		break;
+	    }
+	}
+
+	in >> mag;
+
+	// cout << " star data = " << ra << " " << dec << " " << mag << endl;
+
+	sgdSetVec3( stars[nstars], ra, dec, mag );
+
+	++nstars;
+    }
+
+    SG_LOG( SG_ASTRO, SG_INFO, "  Loaded " << nstars << " stars" );
+
+    return true;
+}

simgear/ephemeris/stardata.hxx

@@ -0,0 +1,62 @@
+// stardata.hxx -- manage star data
+//
+// Written by Curtis Olson, started March 2000.
+//
+// Copyright (C) 2000  Curtis L. Olson - curt@flightgear.org
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA  02111-1307, USA.
+//
+// $Id$
+
+
+#ifndef _SG_STARDATA_HXX
+#define _SG_STARDATA_HXX
+
+
+#include <plib/sg.h>
+
+#include <simgear/misc/sg_path.hxx>
+
+
+#define SG_MAX_STARS 850
+
+
+class SGStarData {
+
+    int nstars;
+    sgdVec3 *stars;
+    
+    SGPath data_path;
+
+public:
+
+    // Constructor
+    SGStarData();
+    SGStarData( SGPath path );
+
+    // Destructor
+    ~SGStarData();
+
+    // load the stars database
+    bool load();
+
+    // stars
+    inline int getNumStars() const { return nstars; }
+    inline sgdVec3 *getStars() { return stars; }
+};
+
+
+#endif // _SG_STARDATA_HXX

simgear/ephemeris/stars.cxx

@@ -1,268 +0,0 @@
-// stars.cxx -- data structures and routines for managing and rendering stars.
-//
-// Written by Curtis Olson, started August 1997.
-//
-// Copyright (C) 1997  Curtis L. Olson  - curt@me.umn.edu
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-//*************************************************************************/
-
-
-#ifdef HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
-#ifdef HAVE_WINDOWS_H
-#  include <windows.h>
-#endif
-
-#include <simgear/compiler.h>
-
-#ifdef FG_HAVE_STD_INCLUDES
-#  include <cmath>
-#  include <cstdio>
-#  include <cstring>
-#  include <ctime>
-#else
-#  include <math.h>
-#  include <stdio.h>
-#  include <string.h>
-#  include <time.h>
-#endif
-
-#include <string>
-
-#include <GL/glut.h>
-#include <simgear/xgl/xgl.h>
-
-#include <simgear/constants.h>
-#include <simgear/debug/logstream.hxx>
-#include <simgear/misc/fgpath.hxx>
-#include <simgear/misc/fgstream.hxx>
-#include <simgear/misc/stopwatch.hxx>
-
-#include <Aircraft/aircraft.hxx>
-#include <Main/options.hxx>
-#include <Main/views.hxx>
-#include <Time/fg_time.hxx>
-
-#include "stars.hxx"
-
-// FG_USING_STD(getline);
-
-#define EpochStart           (631065600)
-#define DaysSinceEpoch(secs) (((secs)-EpochStart)*(1.0/(24*3600)))
-#define FG_MAX_STARS 3500
-
-// Define four structures, each with varying amounts of stars
-static GLint stars[FG_STAR_LEVELS];
-
-
-// Initialize the Star Management Subsystem
-int fgStarsInit( void ) {
-    // -dw- avoid local data > 32k error by dynamic allocation of the
-    // array, problem for some compilers
-    Point3D *starlist = new Point3D[FG_MAX_STARS];
-    // struct CelestialCoord pltPos;
-    double right_ascension, declination, magnitude;
-    double min_magnitude[FG_STAR_LEVELS];
-    // double ra_save, decl_save;
-    // double ra_save1, decl_save1;
-    int i, j, starcount, count;
-
-    FG_LOG( FG_ASTRO, FG_INFO, "Initializing stars" );
-
-    if ( FG_STAR_LEVELS < 4 ) {
-	FG_LOG( FG_ASTRO, FG_ALERT, "Big whups in stars.cxx" );
-	exit(-1);
-    }
-
-    // build the full path name to the stars data base file
-    FGPath path ( current_options.get_fg_root() );
-    path.append( "Astro/stars" );
-    FG_LOG( FG_ASTRO, FG_INFO, "  Loading stars from " << path.str() );
-
-    fg_gzifstream in( path.str() );
-    if ( ! in ) {
-	FG_LOG( FG_ASTRO, FG_ALERT, "Cannot open star file: " << path.str() );
-	exit(-1);
-    }
-
-    starcount = 0;
-
-    StopWatch timer;
-    timer.start();
-
-    // read in each line of the file
-    while ( ! in.eof() && starcount < FG_MAX_STARS )
-    {
-	in >> skipcomment;
-	string name;
-	getline( in, name, ',' );
-	in >> starlist[starcount];
-	++starcount;
-    }
-
-    timer.stop();
-    FG_LOG( FG_ASTRO, FG_INFO, 
-	    "Loaded " << starcount << " stars in "
-	    << timer.elapsedSeconds() << " seconds" );
-
-    min_magnitude[0] = 4.2;
-    min_magnitude[1] = 3.6;
-    min_magnitude[2] = 3.0;
-    min_magnitude[3] = 2.4;
-    min_magnitude[4] = 1.8;
-    min_magnitude[5] = 1.2;
-    min_magnitude[6] = 0.6;
-    min_magnitude[7] = 0.0;
-
-    // build the various star display lists
-    for ( i = 0; i < FG_STAR_LEVELS; i++ ) {
-
-	stars[i] = xglGenLists(1);
-	xglNewList( stars[i], GL_COMPILE );
-	xglBegin( GL_POINTS );
-
-	count = 0;
-
-	for ( j = 0; j < starcount; j++ ) {
-	    magnitude = starlist[j].z();
-	    // printf("magnitude = %.2f\n", magnitude);
-
-	    if ( magnitude < min_magnitude[i] ) {
-		right_ascension = starlist[j].x();
-		declination = starlist[j].y();
-
-		count++;
-
-		// scale magnitudes to (0.0 - 1.0)
-		magnitude = (0.0 - magnitude) / 5.0 + 1.0;
-		
-		// scale magnitudes again so they look ok
-		if ( magnitude > 1.0 ) { magnitude = 1.0; }
-		if ( magnitude < 0.0 ) { magnitude = 0.0; }
-		// magnitude =
-		//     magnitude * 0.7 + (((FG_STAR_LEVELS - 1) - i) * 0.042);
-		  
-		magnitude = magnitude * 0.9 + 
-		    (((FG_STAR_LEVELS - 1) - i) * 0.014);
-		// printf("  Found star: %d %s, %.3f %.3f %.3f\n", count,
-		//        name, right_ascension, declination, magnitude);
-		    
-		xglColor3f( magnitude, magnitude, magnitude );
-		//xglColor3f(0,0,0);*/
-		xglVertex3f( 50000.0*cos(right_ascension)*cos(declination),
-			     50000.0*sin(right_ascension)*cos(declination),
-			     50000.0*sin(declination) );
-	    }
-	} // while
-
-	xglEnd();
-
-	/*
-	xglBegin(GL_LINE_LOOP);
-        xglColor3f(1.0, 0.0, 0.0);
-	xglVertex3f( 50000.0 * cos(ra_save-0.2) * cos(decl_save-0.2),
-		    50000.0 * sin(ra_save-0.2) * cos(decl_save-0.2),
-		    50000.0 * sin(decl_save-0.2) );
-	xglVertex3f( 50000.0 * cos(ra_save+0.2) * cos(decl_save-0.2),
-		    50000.0 * sin(ra_save+0.2) * cos(decl_save-0.2),
-		    50000.0 * sin(decl_save-0.2) );
- 	xglVertex3f( 50000.0 * cos(ra_save+0.2) * cos(decl_save+0.2),
-		    50000.0 * sin(ra_save+0.2) * cos(decl_save+0.2),
-		    50000.0 * sin(decl_save+0.2) );
- 	xglVertex3f( 50000.0 * cos(ra_save-0.2) * cos(decl_save+0.2),
-		    50000.0 * sin(ra_save-0.2) * cos(decl_save+0.2),
-		    50000.0 * sin(decl_save+0.2) );
-	xglEnd();
-	*/
-
-	/*
-	xglBegin(GL_LINE_LOOP);
-        xglColor3f(0.0, 1.0, 0.0);
-	xglVertex3f( 50000.0 * cos(ra_save1-0.2) * cos(decl_save1-0.2),
-		    50000.0 * sin(ra_save1-0.2) * cos(decl_save1-0.2),
-		    50000.0 * sin(decl_save1-0.2) );
-	xglVertex3f( 50000.0 * cos(ra_save1+0.2) * cos(decl_save1-0.2),
-		    50000.0 * sin(ra_save1+0.2) * cos(decl_save1-0.2),
-		    50000.0 * sin(decl_save1-0.2) );
- 	xglVertex3f( 50000.0 * cos(ra_save1+0.2) * cos(decl_save1+0.2),
-		    50000.0 * sin(ra_save1+0.2) * cos(decl_save1+0.2),
-		    50000.0 * sin(decl_save1+0.2) );
- 	xglVertex3f( 50000.0 * cos(ra_save1-0.2) * cos(decl_save1+0.2),
-		    50000.0 * sin(ra_save1-0.2) * cos(decl_save1+0.2),
-		    50000.0 * sin(decl_save1+0.2) );
-	xglEnd();
-	*/
-
-	xglEndList();
-	    
-	FG_LOG( FG_ASTRO, FG_INFO,
-		"  Loading " << count << " stars brighter than " 
-		<< min_magnitude[i] );
-    }
-
-    return 1;  // OK, we got here because initialization worked.
-}
-
-
-// Draw the Stars
-void fgStarsRender( void ) {
-    FGInterface *f;
-    fgLIGHT *l;
-    FGTime *t;
-    int i;
-
-    f = current_aircraft.fdm_state;
-    l = &cur_light_params;
-    t = FGTime::cur_time_params;
-
-    // FG_PI_2 + 0.1 is about 6 degrees after sundown and before sunrise
-
-    // t->sun_angle = 3.0; // to force stars to be drawn (for testing)
-
-    // render the stars
-    if ( l->sun_angle > (FG_PI_2 + 5 * DEG_TO_RAD ) ) {
-	// determine which star structure to draw
-	if ( l->sun_angle > (FG_PI_2 + 10.0 * DEG_TO_RAD ) ) {
-	    i = 0;
-	} else if ( l->sun_angle > (FG_PI_2 + 8.8 * DEG_TO_RAD ) ) {
-	    i = 1;
-	} else if ( l->sun_angle > (FG_PI_2 + 7.5 * DEG_TO_RAD ) ) {
-	    i = 2;
-	} else if ( l->sun_angle > (FG_PI_2 + 7.0 * DEG_TO_RAD ) ) {
-	    i = 3;
-	} else if ( l->sun_angle > (FG_PI_2 + 6.5 * DEG_TO_RAD ) ) {
-	    i = 4;
-	} else if ( l->sun_angle > (FG_PI_2 + 6.0 * DEG_TO_RAD ) ) {
-	    i = 5;
-	} else if ( l->sun_angle > (FG_PI_2 + 5.5 * DEG_TO_RAD ) ) {
-	    i = 6;
-	} else {
-	    i = 7;
-	}
-
-	// printf("RENDERING STARS = %d (night)\n", i);
-
-	xglCallList(stars[i]);
-    } else {
-	// printf("not RENDERING STARS (day)\n");
-    }
-}
-
-

simgear/ephemeris/stars.hxx

@@ -1,47 +0,0 @@
-// stars.hxx -- data structures and routines for managing and rendering stars.
-//
-// Written by Curtis Olson, started August 1997.
-//
-// Copyright (C) 1997  Curtis L. Olson  - curt@me.umn.edu
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-
-
-#ifndef _STARS_HXX
-#define _STARS_HXX
-
-
-#ifndef __cplusplus                                                          
-# error This library requires C++
-#endif                                   
-
-#include <Time/fg_time.hxx>
-
-#define FG_STAR_LEVELS 8         // how many star transitions
-
-// Initialize the Star Management Subsystem
-int fgStarsInit( void );
-
-// Draw the Stars
-void fgStarsRender( void );
-
-// [no longer used?] extern FGTime cur_time_params;
-
-
-#endif // _STARS_HXX
-
-

simgear/ephemeris/uranus.cxx

@@ -5,19 +5,20 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
@@ -30,31 +31,40 @@
 #include "uranus.hxx"
 
 /*************************************************************************
- * Uranus::Uranus(FGTime *t)
+ * Uranus::Uranus(double mjd)
  * Public constructor for class Uranus
  * Argument: The current time.
  * the hard coded orbital elements for Uranus are passed to 
  * CelestialBody::CelestialBody();
  ************************************************************************/
-Uranus::Uranus(FGTime *t) :
+Uranus::Uranus(double mjd) :
   CelestialBody(74.00050,   1.3978000E-5,
 		0.7733,     1.900E-8,
 		96.66120,   3.0565000E-5,
 		19.181710, -1.55E-8,
 		0.047318,   7.450E-9,
-		142.5905,   0.01172580600, t)
+		142.5905,   0.01172580600, mjd)
+{
+}
+Uranus::Uranus() :
+  CelestialBody(74.00050,   1.3978000E-5,
+		0.7733,     1.900E-8,
+		96.66120,   3.0565000E-5,
+		19.181710, -1.55E-8,
+		0.047318,   7.450E-9,
+		142.5905,   0.01172580600)
 {
 }
 
 /*************************************************************************
- * void Uranus::updatePosition(FGTime *t, Star *ourSun)
+ * void Uranus::updatePosition(double mjd, Star *ourSun)
  * 
  * calculates the current position of Uranus, by calling the base class,
  * CelestialBody::updatePosition(); The current magnitude is calculated using 
  * a Uranus specific equation
  *************************************************************************/
-void Uranus::updatePosition(FGTime *t, Star *ourSun)
+void Uranus::updatePosition(double mjd, Star *ourSun)
 {
-  CelestialBody::updatePosition(t, ourSun);
+  CelestialBody::updatePosition(mjd, ourSun);
   magnitude = -7.15 + 5*log10( r*R) + 0.001 * FV;
 }

simgear/ephemeris/uranus.hxx

@@ -5,34 +5,35 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
 #ifndef _URANUS_HXX_
 #define _URANUS_HXX_
 
-#include <Time/fg_time.hxx>
-#include "celestialBody.hxx"
-#include "star.hxx"
+#include <simgear/ephemeris/celestialBody.hxx>
+#include <simgear/ephemeris/star.hxx>
 
 class Uranus : public CelestialBody
 {
 public:
-  Uranus ( FGTime *t);
-  void updatePosition(FGTime *t, Star *ourSun);
+  Uranus (double mjd);
+  Uranus ();
+  void updatePosition(double mjd, Star *ourSun);
 };
 
 #endif // _URANUS_HXX_

simgear/ephemeris/venus.cxx

@@ -5,19 +5,20 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
@@ -30,31 +31,40 @@
 #include "venus.hxx"
 
 /*************************************************************************
- * Venus::Venus(FGTime *t)
+ * Venus::Venus(double mjd)
  * Public constructor for class Venus
  * Argument: The current time.
  * the hard coded orbital elements for Venus are passed to 
  * CelestialBody::CelestialBody();
  ************************************************************************/
-Venus::Venus(FGTime *t) :
+Venus::Venus(double mjd) :
   CelestialBody(76.67990,  2.4659000E-5, 
 		3.3946,    2.75E-8,
 		54.89100,  1.3837400E-5,
 		0.7233300, 0.000000,
 		0.006773, -1.302E-9,
-		48.00520,  1.60213022440, t)
+		48.00520,  1.60213022440, mjd)
+{
+}
+Venus::Venus() :
+  CelestialBody(76.67990,  2.4659000E-5, 
+		3.3946,    2.75E-8,
+		54.89100,  1.3837400E-5,
+		0.7233300, 0.000000,
+		0.006773, -1.302E-9,
+		48.00520,  1.60213022440)
 {
 }
 
 /*************************************************************************
- * void Venus::updatePosition(FGTime *t, Star *ourSun)
+ * void Venus::updatePosition(double mjd, Star *ourSun)
  * 
  * calculates the current position of Venus, by calling the base class,
  * CelestialBody::updatePosition(); The current magnitude is calculated using 
  * a Venus specific equation
  *************************************************************************/
-void Venus::updatePosition(FGTime *t, Star *ourSun)
+void Venus::updatePosition(double mjd, Star *ourSun)
 {
-  CelestialBody::updatePosition(t, ourSun);
+  CelestialBody::updatePosition(mjd, ourSun);
   magnitude = -4.34 + 5*log10( r*R ) + 0.013 * FV + 4.2E-07 * pow(FV,3);
 }

simgear/ephemeris/venus.hxx

@@ -5,34 +5,35 @@
  * September 1998. This code is based upon algorithms and data kindly 
  * provided by Mr. Paul Schlyter. (pausch@saaf.se). 
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation; either version 2 of the
- * License, or (at your option) any later version.
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
  *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
+ * Library General Public License for more details.
  *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA  02111-1307, USA.
  *
  * $Id$
  **************************************************************************/
 #ifndef _VENUS_HXX_
 #define _VENUS_HXX_
 
-#include <Time/fg_time.hxx>
-#include "celestialBody.hxx"
-#include "star.hxx"
+#include <simgear/ephemeris/celestialBody.hxx>
+#include <simgear/ephemeris/star.hxx>
 
 class Venus : public CelestialBody
 {
 public:
-  Venus ( FGTime *t);
-  void updatePosition(FGTime *t, Star *ourSun);
+  Venus (double mjd);
+  Venus ();
+  void updatePosition(double mjd, Star *ourSun);
 };
 
 #endif // _VENUS_HXX_

simgear/io/Makefile.am

@@ -0,0 +1,46 @@
+includedir = @includedir@/io
+
+lib_LIBRARIES = libsgio.a
+
+include_HEADERS = \
+	iochannel.hxx \
+	lowlevel.hxx \
+	sg_binobj.hxx \
+	sg_file.hxx \
+	sg_serial.hxx \
+	sg_socket.hxx
+
+libsgio_a_SOURCES = \
+	iochannel.cxx \
+	lowlevel.cxx \
+	sg_binobj.cxx \
+	sg_file.cxx \
+	sg_serial.cxx \
+	sg_socket.cxx 
+
+INCLUDES += -I$(top_srcdir)
+
+noinst_PROGRAMS = decode_binobj socktest lowtest
+
+socktest_SOURCES = socktest.cxx
+
+socktest_LDADD = \
+	$(top_builddir)/simgear/bucket/libsgbucket.a \
+        $(top_builddir)/simgear/io/libsgio.a \
+	$(top_builddir)/simgear/debug/libsgdebug.a \
+	$(top_builddir)/simgear/misc/libsgmisc.a \
+	-lz
+
+lowtest_SOURCES = lowtest.cxx
+
+lowtest_LDADD = \
+	$(top_builddir)/simgear/io/libsgio.a
+
+decode_binobj_SOURCES = decode_binobj.cxx
+
+decode_binobj_LDADD = \
+	$(top_builddir)/simgear/io/libsgio.a \
+        $(top_builddir)/simgear/bucket/libsgbucket.a \
+        $(top_builddir)/simgear/misc/libsgmisc.a \
+        $(top_builddir)/simgear/debug/libsgdebug.a \
+        -lz

simgear/io/decode_binobj.cxx

@@ -0,0 +1,115 @@
+#include <simgear/compiler.h>
+
+#include <unistd.h>
+#include STL_IOSTREAM
+
+#if !defined(SG_HAVE_NATIVE_SGI_COMPILERS)
+SG_USING_STD(cout);
+SG_USING_STD(endl);
+#endif
+
+#include "sg_binobj.hxx"
+
+
+int main( int argc, char **argv ) {
+    int i, j;
+
+    // check usage
+    if ( argc != 2 ) {
+        cout << "Usage: " << argv[0] << " binary_obj_file" << endl;
+    }
+
+    SGBinObject obj;
+    bool result = obj.read_bin( argv[1] );
+    if ( !result ) {
+        cout << "error loading: " << argv[1] << endl;
+        exit(-1);
+    }
+
+    cout << "# FGFS Scenery" << endl;
+    cout << "# Version " << obj.get_version() << endl;
+    cout << endl;
+
+    printf("# gbs %.5f %.5f %.5f %.2f\n", obj.get_gbs_center().x(), 
+           obj.get_gbs_center().y(), obj.get_gbs_center().z(),
+           obj.get_gbs_radius());
+    cout << endl;
+
+    point_list nodes = obj.get_wgs84_nodes();
+    cout << "# vertex list" << endl;
+    for ( i = 0; i < (int)nodes.size(); ++i ) {
+        printf("v %.5f %.5f %.5f\n", nodes[i].x(), nodes[i].y(), nodes[i].z() );
+    }
+    cout << endl;
+
+    point_list normals = obj.get_normals();
+    cout << "# vertex normal list" << endl;
+    for ( i = 0; i < (int)normals.size(); ++i ) {
+        printf("vn %.5f %.5f %.5f\n",
+               normals[i].x(), normals[i].y(), normals[i].z() );
+    }
+    cout << endl;
+
+    point_list texcoords = obj.get_texcoords();
+    cout << "# texture coordinate list" << endl;
+    for ( i = 0; i < (int)texcoords.size(); ++i ) {
+        printf("vt %.5f %.5f\n",
+               texcoords[i].x(), texcoords[i].y() );
+    }
+    cout << endl;
+
+    cout << "# triangle groups" << endl;
+    cout << endl;
+
+    string material;
+    int_list vertex_index;
+    int_list tex_index;
+
+    // generate triangles
+    string_list tri_materials = obj.get_tri_materials();
+    group_list tris_v = obj.get_tris_v();
+    group_list tris_tc = obj.get_tris_tc();
+    for ( i = 0; i < (int)tris_v.size(); ++i ) {
+	material = tri_materials[i];
+	vertex_index = tris_v[i];
+	tex_index = tris_tc[i];
+        cout << "# usemtl " << material << endl;
+        cout << "f ";
+        for ( j = 0; j < (int)vertex_index.size(); ++j ) {
+            cout << vertex_index[j] << "/" << tex_index[j] << " ";
+        }
+        cout << endl;
+    }
+
+    // generate strips
+    string_list strip_materials = obj.get_strip_materials();
+    group_list strips_v = obj.get_strips_v();
+    group_list strips_tc = obj.get_strips_tc();
+    for ( i = 0; i < (int)strips_v.size(); ++i ) {
+	material = strip_materials[i];
+	vertex_index = strips_v[i];
+	tex_index = strips_tc[i];
+        cout << "# usemtl " << material << endl;
+        cout << "ts ";
+        for ( j = 0; j < (int)vertex_index.size(); ++j ) {
+            cout << vertex_index[j] << "/" << tex_index[j] << " ";
+        }
+        cout << endl;
+    }
+
+    // generate fans
+    string_list fan_materials = obj.get_fan_materials();
+    group_list fans_v = obj.get_fans_v();
+    group_list fans_tc = obj.get_fans_tc();
+    for ( i = 0; i < (int)fans_v.size(); ++i ) {
+	material = fan_materials[i];
+	vertex_index = fans_v[i];
+	tex_index = fans_tc[i];
+        cout << "# usemtl " << material << endl;
+        cout << "tf ";
+        for ( j = 0; j < (int)vertex_index.size(); ++j ) {
+            cout << vertex_index[j] << "/" << tex_index[j] << " ";
+        }
+        cout << endl;
+    }
+}

simgear/io/iochannel.cxx

@@ -0,0 +1,74 @@
+// iochannel.cxx -- High level IO channel class
+//
+// Written by Curtis Olson, started November 1999.
+//
+// Copyright (C) 1999  Curtis L. Olson - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#include "iochannel.hxx"
+// #include "garmin.hxx"
+// #include "nmea.hxx"
+
+
+// constructor
+SGIOChannel::SGIOChannel()
+{
+}
+
+
+// destructor
+SGIOChannel::~SGIOChannel()
+{
+}
+
+
+// dummy configure routine
+bool SGIOChannel::open( const SGProtocolDir d ) {
+    return false;
+}
+
+
+// dummy process routine
+int SGIOChannel::read( char *buf, int length ) {
+    return 0;
+}
+
+
+// dummy process routine
+int SGIOChannel::readline( char *buf, int length ) {
+    return 0;
+}
+
+
+// dummy process routine
+int SGIOChannel::write( const char *buf, const int length ) {
+    return false;
+}
+
+
+// dummy process routine
+int SGIOChannel::writestring( const char *str ) {
+    return false;
+}
+
+
+// dummy close routine
+bool SGIOChannel::close() {
+    return false;
+}

simgear/io/iochannel.hxx

@@ -0,0 +1,166 @@
+/**
+ * \file iochannel.hxx
+ * High level IO channel base class.
+ */
+
+// Written by Curtis Olson, started November 1999.
+//
+// Copyright (C) 1999  Curtis L. Olson - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#ifndef _IOCHANNEL_HXX
+#define _IOCHANNEL_HXX
+
+
+#include <simgear/compiler.h>
+
+// #include "protocol.hxx"
+
+#include STL_STRING
+#include <vector>
+
+SG_USING_STD(vector);
+SG_USING_STD(string);
+
+
+#define SG_IO_MAX_MSG_SIZE 16384
+
+/**
+ * Specify if this is a read (IN), write (OUT), or r/w (BI) directional
+ * channel
+ */
+enum SGProtocolDir {
+    SG_IO_NONE = 0,
+    SG_IO_IN = 1,
+    SG_IO_OUT = 2,
+    SG_IO_BI = 3
+};
+
+/**
+ * Specify the channel type
+ */
+enum SGChannelType {
+    sgFileType = 0,
+    sgSerialType = 1,
+    sgSocketType = 2
+};
+
+
+/**
+ * The SGIOChannel base class provides a consistent method for
+ * applications to communication through various mediums. By providing
+ * a base class with multiple derived classes, and application such as
+ * FlightGear can implement a way to speak any protocol via any kind
+ * of I/O channel.
+ *
+ * All of the SGIOChannel derived classes have exactly the same usage
+ * interface once an instance has been created.
+ *
+ */
+class SGIOChannel {
+
+    SGChannelType type;
+    SGProtocolDir dir;
+    bool valid;
+
+public:
+
+    /** Constructor */
+    SGIOChannel();
+
+    /** Destructor */
+    virtual ~SGIOChannel();
+
+    /** Open a channel.
+     * @param d channel communication "direction"
+     * Direction can be one of: 
+     *  - SG_IO_IN - data will be flowing into this object to the application. 
+     *  - SG_IO_OUT - data will be flowing out of this object from the
+     *                application. 
+     *  - SG_IO_BI - data will be flowing in both directions. 
+     *  - SG_IO_NONE - data will not be flowing in either direction.
+     *                 This is here for the sake of completeness. 
+     * @return result of open
+     */
+    virtual bool open( const SGProtocolDir d );
+
+    /**
+     * The read() method is modeled after the read() Unix system
+     * call. You must provide a pointer to a character buffer that has
+     * enough allocated space for your potential read. You can also
+     * specify the maximum number of bytes allowed for this particular
+     * read. The actual number of bytes read is returned.  You are
+     * responsible to ensure that the size of buf is large enough to
+     * accomodate your input message
+     * @param buf a char pointer to your input buffer 
+     * @param length max number of bytes to read
+     * @return number of bytes read
+     */
+    virtual int read( char *buf, int length );
+
+    /**
+     * The readline() method is similar to read() except that it will
+     * stop at the first end of line encountered in the input buffer.
+     * @param buf a char pointer to your input buffer 
+     * @param length max number of bytes to read
+     * @return number of bytes read
+     */
+    virtual int readline( char *buf, int length );
+
+
+    /**
+     * The write() method is modeled after the write() Unix system
+     * call and is analogous to the read() method. You provide a
+     * pointer to a buffer of data, and then length of that data to be
+     * written out. The number of bytes written is returned.
+     * @param buf a char pointer to your output buffer 
+     * @param length number of bytes to write
+     * @return number of bytes written
+     */
+    virtual int write( const char *buf, const int length );
+
+    /**
+     * The writestring() method is a simple wrapper that will
+     * calculate the length of a null terminated character array and
+     * write it to the output channel.
+     * @param buf a char pointer to your output buffer 
+     * @return number of bytes written
+     */
+    virtual int writestring( const char *str );
+
+    /**
+     * The close() method is modeled after the close() Unix system
+     * call and will close an open device. You should call this method
+     * when you are done using your IO class, before it is destructed.
+     * @return result of close
+     */
+    virtual bool close();
+
+    inline void set_type( SGChannelType t ) { type = t; }
+    inline SGChannelType get_type() const { return type; }
+
+    inline void set_dir( const SGProtocolDir d ) { dir = d; }
+    inline SGProtocolDir get_dir() const { return dir; }
+    inline bool isvalid() const { return valid; }
+};
+
+
+#endif // _IOCHANNEL_HXX
+
+

simgear/io/lowlevel.cxx

@@ -0,0 +1,495 @@
+// lowlevel.cxx -- routines to handle lowlevel compressed binary IO of
+//                 various datatypes
+//
+// Shamelessly adapted from plib (plib.sourceforge.net) January 2001
+//
+// Original version Copyright (C) 2000  the plib team
+// Local changes Copyright (C) 2000  Curtis L. Olson  - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#include "lowlevel.hxx" 
+
+
+static int  read_error = false ;
+static int write_error = false ;
+
+void sgClearReadError() { read_error = false; }
+void sgClearWriteError() { write_error = false; }
+int sgReadError() { return  read_error ; }
+int sgWriteError() { return write_error ; }
+
+
+void sgReadChar ( gzFile fd, char *var )
+{
+    if ( gzread ( fd, var, sizeof(char) ) != sizeof(char) ) {
+        read_error = true ;
+    }
+}
+
+
+void sgWriteChar ( gzFile fd, const char var )
+{
+    if ( gzwrite ( fd, (void *)(&var), sizeof(char) ) != sizeof(char) ) {
+        write_error = true ;
+    }
+}
+
+
+void sgReadFloat ( gzFile fd, float *var )
+{
+    if ( gzread ( fd, var, sizeof(float) ) != sizeof(float) ) {
+        read_error = true ;
+    }
+    if ( sgIsBigEndian() ) {
+        sgEndianSwap( (unsigned int*)var);
+    }
+}
+
+
+void sgWriteFloat ( gzFile fd, const float var )
+{
+    if ( sgIsBigEndian() ) {
+        sgEndianSwap( (unsigned int*)&var);
+    }
+    if ( gzwrite ( fd, (void *)(&var), sizeof(float) ) != sizeof(float) ) {
+        write_error = true ;
+    }
+}
+
+
+void sgReadDouble ( gzFile fd, double *var )
+{
+    if ( gzread ( fd, var, sizeof(double) ) != sizeof(double) ) {
+        read_error = true ;
+    }
+    if ( sgIsBigEndian() ) {
+        sgEndianSwap( (uint64*)var);
+    }
+}
+
+
+void sgWriteDouble ( gzFile fd, const double var )
+{
+    if ( sgIsBigEndian() ) {
+        sgEndianSwap( (uint64*)&var);
+    }
+    if ( gzwrite ( fd, (void *)(&var), sizeof(double) ) != sizeof(double) ) {
+        write_error = true ;
+    }
+}
+
+
+void sgReadUInt ( gzFile fd, unsigned int *var )
+{
+    if ( gzread ( fd, var, sizeof(unsigned int) ) != sizeof(unsigned int) ) {
+        read_error = true ;
+    }
+    if ( sgIsBigEndian() ) {
+        sgEndianSwap( (unsigned int*)var);
+    }
+}
+
+
+void sgWriteUInt ( gzFile fd, const unsigned int var )
+{
+    if ( sgIsBigEndian() ) {
+        sgEndianSwap( (unsigned int*)&var);
+    }
+    if ( gzwrite ( fd, (void *)(&var), sizeof(unsigned int) )
+	 != sizeof(unsigned int) )
+    {
+        write_error = true ;
+    }
+}
+
+
+void sgReadInt ( gzFile fd, int *var )
+{
+    if ( gzread ( fd, var, sizeof(int) ) != sizeof(int) ) {
+        read_error = true ;
+    }
+    if ( sgIsBigEndian() ) {
+        sgEndianSwap( (unsigned int*)var);
+    }
+}
+
+
+void sgWriteInt ( gzFile fd, const int var )
+{
+    if ( sgIsBigEndian() ) {
+        sgEndianSwap( (unsigned int*)&var);
+    }
+    if ( gzwrite ( fd, (void *)(&var), sizeof(int) ) != sizeof(int) ) {
+        write_error = true ;
+    }
+}
+
+
+void sgReadLong ( gzFile fd, long int *var )
+{
+    if ( gzread ( fd, var, sizeof(long int) ) != sizeof(long int) ) {
+        read_error = true ;
+    }
+    if ( sgIsBigEndian() ) {
+        sgEndianSwap( (unsigned int*)var);
+    }
+}
+
+
+void sgWriteLong ( gzFile fd, const long int var )
+{
+    if ( sgIsBigEndian() ) {
+        sgEndianSwap( (unsigned int*)&var);
+    }
+    if ( gzwrite ( fd, (void *)(&var), sizeof(long int) )
+         != sizeof(long int) )
+    {
+        write_error = true ;
+    }
+}
+
+
+void sgReadLongLong ( gzFile fd, int64 *var )
+{
+    if ( gzread ( fd, var, sizeof(int64) ) != sizeof(int64) ) {
+        read_error = true ;
+    }
+    if ( sgIsBigEndian() ) {
+        sgEndianSwap( (uint64*)var);
+    }
+}
+
+
+void sgWriteLongLong ( gzFile fd, const int64 var )
+{
+    if ( sgIsBigEndian() ) {
+        sgEndianSwap( (uint64*)&var);
+    }
+    if ( gzwrite ( fd, (void *)(&var), sizeof(int64) )
+         != sizeof(int64) )
+    {
+        write_error = true ;
+    }
+}
+
+
+void sgReadUShort ( gzFile fd, unsigned short *var )
+{
+    if ( gzread ( fd, var, sizeof(unsigned short) ) != sizeof(unsigned short) ){
+        read_error = true ;
+    }
+    if ( sgIsBigEndian() ) {
+        sgEndianSwap( (unsigned short int*)var);
+    }
+}
+
+
+void sgWriteUShort ( gzFile fd, const unsigned short var )
+{
+    if ( sgIsBigEndian() ) {
+        sgEndianSwap( (unsigned short*)&var);
+    }
+    if ( gzwrite ( fd, (void *)(&var), sizeof(unsigned short) )
+	 != sizeof(unsigned short) )
+    {
+        write_error = true ;
+    }
+}
+
+
+void sgReadShort ( gzFile fd, short *var )
+{
+    if ( gzread ( fd, var, sizeof(short) ) != sizeof(short) ) {
+        read_error = true ;
+    }
+    if ( sgIsBigEndian() ) {
+        sgEndianSwap( (unsigned short int*)var);
+    }
+}
+
+
+void sgWriteShort ( gzFile fd, const short var )
+{
+    if ( sgIsBigEndian() ) {
+        sgEndianSwap( (unsigned short*)&var);
+    }
+    if ( gzwrite ( fd, (void *)(&var), sizeof(short) ) != sizeof(short) ) {
+        write_error = true ;
+    }
+}
+
+
+void sgReadFloat ( gzFile fd, const unsigned int n, float *var )
+{
+    if ( gzread ( fd, var, sizeof(float) * n ) != (int)(sizeof(float) * n) ) {
+        read_error = true ;
+    }
+    if ( sgIsBigEndian() ) {
+        for ( unsigned int i = 0; i < n; ++i ) {
+            sgEndianSwap( (unsigned int*)var++);
+        }
+    }
+}
+
+
+void sgWriteFloat ( gzFile fd, const unsigned int n, const float *var )
+{
+    if ( sgIsBigEndian() ) {
+        float *swab = new float[n];
+        float *ptr = swab;
+        memcpy( swab, var, sizeof(float) * n );
+        for ( unsigned int i = 0; i < n; ++i ) {
+            sgEndianSwap( (unsigned int*)ptr++);
+        }
+        var = swab;
+    }
+    if ( gzwrite ( fd, (void *)var, sizeof(float) * n )
+	 != (int)(sizeof(float) * n) )
+    {
+        write_error = true ;
+    }
+}
+
+void sgReadDouble ( gzFile fd, const unsigned int n, double *var )
+{
+    if ( gzread ( fd, var, sizeof(double) * n ) != (int)(sizeof(double) * n) ) {
+        read_error = true ;
+    }
+    if ( sgIsBigEndian() ) {
+        for ( unsigned int i = 0; i < n; ++i ) {
+            sgEndianSwap( (uint64*)var++);
+        }
+    }
+}
+
+
+void sgWriteDouble ( gzFile fd, const unsigned int n, const double *var )
+{
+    if ( sgIsBigEndian() ) {
+        double *swab = new double[n];
+        double *ptr = swab;
+        memcpy( swab, var, sizeof(double) * n );
+        for ( unsigned int i = 0; i < n; ++i ) {
+            sgEndianSwap( (uint64*)ptr++);
+        }
+        var = swab;
+    }
+    if ( gzwrite ( fd, (void *)var, sizeof(double) * n )
+	 != (int)(sizeof(double) * n) )
+    {
+        write_error = true ;
+    }
+}
+
+void sgReadBytes ( gzFile fd, const unsigned int n, void *var ) 
+{
+    if ( n == 0) return;
+    if ( gzread ( fd, var, n ) != (int)n ) {
+        read_error = true ;
+    }
+}
+
+void sgWriteBytes ( gzFile fd, const unsigned int n, const void *var ) 
+{
+    if ( n == 0) return;
+    if ( gzwrite ( fd, (void *)var, n ) != (int)n ) {
+        write_error = true ;
+    }
+}
+
+
+void sgReadUShort ( gzFile fd, const unsigned int n, unsigned short *var )
+{
+    if ( gzread ( fd, var, sizeof(unsigned short) * n )
+	 != (int)(sizeof(unsigned short) * n) )
+    {
+        read_error = true ;
+    }
+    if ( sgIsBigEndian() ) {
+        for ( unsigned int i = 0; i < n; ++i ) {
+            sgEndianSwap( (unsigned short int*)var++);
+        }
+    }
+}
+
+
+void sgWriteUShort ( gzFile fd, const unsigned int n, const unsigned short *var )
+{
+    if ( sgIsBigEndian() ) {
+        unsigned short *swab = new unsigned short[n];
+        unsigned short *ptr = swab;
+        memcpy( swab, var, sizeof(unsigned short) * n );
+        for ( unsigned int i = 0; i < n; ++i ) {
+            sgEndianSwap( (unsigned short*)ptr++);
+        }
+        var = swab;
+    }
+    if ( gzwrite ( fd, (void *)var, sizeof(unsigned short) * n )
+	 != (int)(sizeof(unsigned short) * n) )
+    {
+        write_error = true ;
+    }
+}
+
+
+
+void sgReadShort ( gzFile fd, const unsigned int n, short *var )
+{
+    if ( gzread ( fd, var, sizeof(short) * n )
+	 != (int)(sizeof(short) * n) )
+    {
+        read_error = true ;
+    }
+    if ( sgIsBigEndian() ) {
+        for ( unsigned int i = 0; i < n; ++i ) {
+            sgEndianSwap( (unsigned short int*)var++);
+        }
+    }
+}
+
+
+void sgWriteShort ( gzFile fd, const unsigned int n, const short *var )
+{
+    if ( sgIsBigEndian() ) {
+        short *swab = new short[n];
+        short *ptr = swab;
+        memcpy( swab, var, sizeof(short) * n );
+        for ( unsigned int i = 0; i < n; ++i ) {
+            sgEndianSwap( (unsigned short*)ptr++);
+        }
+        var = swab;
+    }
+    if ( gzwrite ( fd, (void *)var, sizeof(short) * n )
+	 != (int)(sizeof(short) * n) )
+    {
+        write_error = true ;
+    }
+}
+
+
+void sgReadUInt ( gzFile fd, const unsigned int n, unsigned int *var )
+{
+    if ( gzread ( fd, var, sizeof(unsigned int) * n )
+	 != (int)(sizeof(unsigned int) * n) )
+    {
+        read_error = true ;
+    }
+    if ( sgIsBigEndian() ) {
+        for ( unsigned int i = 0; i < n; ++i ) {
+            sgEndianSwap( (unsigned int*)var++);
+        }
+    }
+}
+
+
+void sgWriteUInt ( gzFile fd, const unsigned int n, const unsigned int *var )
+{
+    if ( sgIsBigEndian() ) {
+        unsigned int *swab = new unsigned int[n];
+        unsigned int *ptr = swab;
+        memcpy( swab, var, sizeof(unsigned int) * n );
+        for ( unsigned int i = 0; i < n; ++i ) {
+            sgEndianSwap( (unsigned int*)ptr++);
+        }
+        var = swab;
+    }
+    if ( gzwrite ( fd, (void *)var, sizeof(unsigned int) * n )
+	 != (int)(sizeof(unsigned int) * n) )
+    {
+        write_error = true ;
+    }
+}
+
+
+
+void sgReadInt ( gzFile fd, const unsigned int n, int *var )
+{
+    if ( gzread ( fd, var, sizeof(int) * n )
+	 != (int)(sizeof(int) * n) )
+    {
+        read_error = true ;
+    }
+    if ( sgIsBigEndian() ) {
+        for ( unsigned int i = 0; i < n; ++i ) {
+            sgEndianSwap( (unsigned int*)var++);
+        }
+    }
+}
+
+
+void sgWriteInt ( gzFile fd, const unsigned int n, const int *var )
+{
+    if ( sgIsBigEndian() ) {
+        int *swab = new int[n];
+        int *ptr = swab;
+        memcpy( swab, var, sizeof(int) * n );
+        for ( unsigned int i = 0; i < n; ++i ) {
+            sgEndianSwap( (unsigned int*)ptr++);
+        }
+        var = swab;
+    }
+    if ( gzwrite ( fd, (void *)var, sizeof(int) * n )
+	 != (int)(sizeof(int) * n) )
+    {
+        write_error = true ;
+    }
+}
+
+
+
+#define MAX_ENTITY_NAME_LENGTH 1024
+
+void sgReadString ( gzFile fd, char **var )
+{
+    int i ;
+    char s [ MAX_ENTITY_NAME_LENGTH ] ;
+
+    for ( i = 0 ; i < MAX_ENTITY_NAME_LENGTH ; i++ ) {
+	int c = gzgetc ( fd ) ;
+	s [ i ] = c ;
+
+	if ( c == '\0' )
+	    break ;
+    }
+
+    if ( i >= MAX_ENTITY_NAME_LENGTH-1 )
+	s [ MAX_ENTITY_NAME_LENGTH-1 ] = '\0' ;
+
+
+    if ( s[0] == '\0' )
+	*var = NULL ;
+    else {
+	*var = new char [ strlen(s)+1 ] ;
+	strcpy ( *var, s ) ;
+    }
+}
+
+
+void sgWriteString ( gzFile fd, const char *var )
+{
+    if ( var != NULL ) {
+	if ( gzwrite ( fd, (void *)var, strlen(var) + 1 ) == 
+	     (int)(strlen(var) + 1) )
+	    return ;
+    } else {
+	gzputc( fd, 0 );
+    }
+}
+
+

simgear/io/lowlevel.hxx

@@ -0,0 +1,177 @@
+// lowlevel.hxx -- routines to handle lowlevel compressed binary IO of
+//                 various datatypes
+//
+// Shamelessly adapted from plib  January 2001
+//
+// Original version Copyright (C) 2000  the plib team
+// Local changes Copyright (C) 2000  Curtis L. Olson  - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+//
+
+
+#ifndef _SG_LOWLEVEL_HXX
+#define _SG_LOWLEVEL_HXX
+
+
+#include <stdio.h>
+
+#ifdef HAVE_ZLIB
+#  include <zlib.h>
+#else
+#  include <simgear/zlib/zlib.h>
+#endif
+
+#include <plib/sg.h>
+
+#ifdef _MSC_VER
+typedef __int64 int64;
+typedef __int64 uint64;
+#else
+typedef long long int64;
+typedef unsigned long long uint64;
+#endif
+
+// Note that output is written in little endian form (and converted as
+// necessary for big endian machines)
+
+void sgReadChar ( gzFile fd, char *var ) ;
+void sgWriteChar ( gzFile fd, const char var ) ;
+void sgReadFloat ( gzFile fd, float *var ) ;
+void sgWriteFloat ( gzFile fd, const float var ) ;
+void sgReadDouble ( gzFile fd, double *var ) ;
+void sgWriteDouble ( gzFile fd, const double var ) ;
+void sgReadUInt ( gzFile fd, unsigned int *var ) ;
+void sgWriteUInt ( gzFile fd, const unsigned int var ) ;
+void sgReadInt ( gzFile fd, int *var ) ;
+void sgWriteInt ( gzFile fd, const int var ) ;
+void sgReadLong ( gzFile fd, long int *var ) ;
+void sgWriteLong ( gzFile fd, const long int var ) ;
+void sgReadLongLong ( gzFile fd, int64 *var ) ;
+void sgWriteLongLong ( gzFile fd, const int64 var ) ;
+void sgReadUShort ( gzFile fd, unsigned short *var ) ;
+void sgWriteUShort ( gzFile fd, const unsigned short var ) ;
+void sgReadShort ( gzFile fd, short *var ) ;
+void sgWriteShort ( gzFile fd, const short var ) ;
+
+void sgReadFloat ( gzFile fd, const unsigned int n, float *var ) ;
+void sgWriteFloat ( gzFile fd, const unsigned int n, const float *var ) ;
+void sgReadDouble ( gzFile fd, const unsigned int n, double *var ) ;
+void sgWriteDouble ( gzFile fd, const unsigned int n, const double *var ) ;
+void sgReadUInt ( gzFile fd, const unsigned int n, unsigned int *var ) ;
+void sgWriteUInt ( gzFile fd, const unsigned int n, const unsigned int *var ) ;
+void sgReadInt ( gzFile fd, const unsigned int n, int *var ) ;
+void sgWriteInt ( gzFile fd, const unsigned int n, const int *var ) ;
+void sgReadUShort ( gzFile fd, const unsigned int n, unsigned short *var ) ;
+void sgWriteUShort ( gzFile fd, const unsigned int n, const unsigned short *var ) ;
+void sgReadShort ( gzFile fd, const unsigned int n, short *var ) ;
+void sgWriteShort ( gzFile fd, const unsigned int n, const short *var ) ;
+void sgReadBytes ( gzFile fd, const unsigned int n, void *var ) ;
+void sgWriteBytes ( gzFile fd, const unsigned int n, const void *var ) ;
+
+void sgReadString ( gzFile fd, char **var ) ;
+void sgWriteString ( gzFile fd, const char *var ) ;
+
+inline void sgReadVec2  ( gzFile fd, sgVec2 var ) {
+    sgReadFloat  ( fd, 2, var ) ;
+}
+inline void sgWriteVec2 ( gzFile fd, const sgVec2 var ) {
+    sgWriteFloat ( fd, 2, var ) ;
+}
+
+inline void sgReadVec3  ( gzFile fd, sgVec3 var ) {
+    sgReadFloat  ( fd, 3, var ) ;
+}
+inline void sgWriteVec3 ( gzFile fd, const sgVec3 var ) {
+    sgWriteFloat ( fd, 3, var ) ;
+}
+
+inline void sgReaddVec3  ( gzFile fd, sgdVec3 var ) {
+    sgReadDouble  ( fd, 3, var ) ;
+}
+inline void sgWritedVec3 ( gzFile fd, const sgdVec3 var ) {
+    sgWriteDouble ( fd, 3, var ) ;
+}
+
+inline void sgReadVec4  ( gzFile fd, sgVec4 var ) {
+    sgReadFloat  ( fd, 4, var ) ;
+}
+inline void sgWriteVec4 ( gzFile fd, const sgVec4 var ) {
+    sgWriteFloat ( fd, 4, var ) ;
+}
+
+inline void sgReadMat4  ( gzFile fd, sgMat4 var ) {
+    sgReadFloat  ( fd, 16, (float *)var ) ;
+}
+inline void sgWriteMat4 ( gzFile fd, const sgMat4 var ) {
+    sgWriteFloat ( fd, 16, (float *)var ) ;
+}
+
+void sgClearReadError();
+void sgClearWriteError();
+int sgReadError();
+int sgWriteError();
+
+inline bool sgIsLittleEndian() {
+    static const int sgEndianTest = 1;
+    return (*((char *) &sgEndianTest ) != 0);
+}
+
+inline bool sgIsBigEndian() {
+    static const int sgEndianTest = 1;
+    return (*((char *) &sgEndianTest ) == 0);
+}
+
+inline void sgEndianSwap(unsigned short *x) {
+    *x =
+        (( *x >>  8 ) & 0x00FF ) | 
+        (( *x <<  8 ) & 0xFF00 ) ;
+}
+  
+inline void sgEndianSwap(unsigned int *x) {
+    *x =
+        (( *x >> 24 ) & 0x000000FF ) | 
+        (( *x >>  8 ) & 0x0000FF00 ) | 
+        (( *x <<  8 ) & 0x00FF0000 ) | 
+        (( *x << 24 ) & 0xFF000000 ) ;
+}
+  
+inline void sgEndianSwap(uint64 *x) {
+#ifndef _MSC_VER
+    *x =
+        (( *x >> 56 ) & 0x00000000000000FFULL ) | 
+        (( *x >> 40 ) & 0x000000000000FF00ULL ) | 
+        (( *x >> 24 ) & 0x0000000000FF0000ULL ) | 
+        (( *x >>  8 ) & 0x00000000FF000000ULL ) | 
+        (( *x <<  8 ) & 0x000000FF00000000ULL ) | 
+        (( *x << 24 ) & 0x0000FF0000000000ULL ) |
+        (( *x << 40 ) & 0x00FF000000000000ULL ) |
+        (( *x << 56 ) & 0xFF00000000000000ULL ) ;
+#else
+    *x =
+        (( *x >> 56 ) & 0x00000000000000FF ) | 
+        (( *x >> 40 ) & 0x000000000000FF00 ) | 
+        (( *x >> 24 ) & 0x0000000000FF0000 ) | 
+        (( *x >>  8 ) & 0x00000000FF000000 ) | 
+        (( *x <<  8 ) & 0x000000FF00000000 ) | 
+        (( *x << 24 ) & 0x0000FF0000000000 ) |
+        (( *x << 40 ) & 0x00FF000000000000 ) |
+        (( *x << 56 ) & 0xFF00000000000000 ) ;
+#endif
+}
+
+#endif // _SG_LOWLEVEL_HXX

simgear/io/lowtest.cxx

@@ -0,0 +1,46 @@
+#include <simgear/compiler.h>
+
+#include STL_IOSTREAM
+#include "lowlevel.hxx"
+
+#if !defined(SG_HAVE_NATIVE_SGI_COMPILERS)
+SG_USING_STD(cout);
+SG_USING_STD(endl);
+#endif
+
+
+static const int sgEndianTest = 1;
+#define sgIsLittleEndian (*((char *) &sgEndianTest ) != 0)
+#define sgIsBigEndian    (*((char *) &sgEndianTest ) == 0)
+
+
+int main() {
+    cout << "This machine is ";
+    if ( sgIsLittleEndian ) {
+        cout << "little ";
+    } else {
+        cout << "big ";
+    }
+    cout << "endian" << endl;
+
+    short s = 1111;
+    cout << "short s = " << s << endl;
+    sgEndianSwap((unsigned short *)&s);
+    cout << "short s = " << s << endl;
+    sgEndianSwap((unsigned short *)&s);
+    cout << "short s = " << s << endl;
+
+    int i = 1111111;
+    cout << "int i = " << i << endl;
+    sgEndianSwap((unsigned int *)&i);
+    cout << "int i = " << i << endl;
+    sgEndianSwap((unsigned int *)&i);
+    cout << "int i = " << i << endl;
+
+    double x = 1111111111;
+    cout << "double x = " << x << endl;
+    sgEndianSwap((unsigned long long *)&x);
+    cout << "double x = " << x << endl;
+    sgEndianSwap((unsigned long long *)&x);
+    cout << "double x = " << x << endl;
+}

simgear/io/sg_binobj.hxx

@@ -0,0 +1,190 @@
+/**
+ * \file sg_binobj.hxx
+ * Routines to read and write the low level (binary) simgear 3d object format.
+ */
+
+// Written by Curtis Olson, started January 2000.
+//
+// Copyright (C) 2000  Curtis L. Olson  - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#ifndef _SG_BINOBJ_HXX
+#define _SG_BINOBJ_HXX
+
+
+#include <plib/sg.h>
+
+#include <simgear/compiler.h>
+#include <simgear/constants.h>
+#include <simgear/math/sg_types.hxx>
+#include <simgear/bucket/newbucket.hxx>
+
+#include <stdio.h>
+#include <time.h>
+
+#include <list>
+#include STL_STRING
+
+
+
+/** STL Structure used to store object information */
+typedef vector < int_list > group_list;
+typedef group_list::iterator group_list_iterator;
+typedef group_list::const_iterator const_group_list_iterator;
+
+
+/** Magic Number for our file format */
+#define SG_FILE_MAGIC_NUMBER  ( ('S'<<24) + ('G'<<16) + SG_BINOBJ_VERSION )
+
+
+/**
+ * A class to manipulate the simgear 3d object format.
+ * This class provides functionality to both read and write the binary format.
+ *
+ * Here is a really quick overview of the file syntax:
+ *
+ * - scenery-file: magic, nobjects, object+
+ *
+ * - magic: "TG" + version
+ *
+ * - object: obj_typecode, nproperties, nelements, property+, element+
+ *
+ * - element: nbytes, BYTE+
+ *
+ * - property: prop_typecode, nbytes, BYTE+
+ *
+ * - obj_typecode: bounding sphere | vertices | normals | texcoords |
+ *                 triangles | fans | strips 
+ *
+ * - prop_typecode: material_name | ???
+ *
+ * - nelements: SHORT (Gives us 65536 which ought to be enough, right?)
+ *
+ * - nproperties: SHORT
+ *
+ * - *_typecode: CHAR
+ *
+ * - nbytes: INTEGER (If we used short here that would mean 65536 bytes = 16384
+ *                    floats = 5461 vertices which is not enough for future
+ *	              growth)
+ *
+ * - vertex: FLOAT, FLOAT, FLOAT
+*/
+class SGBinObject {
+    unsigned short version;
+
+    Point3D gbs_center;
+    float gbs_radius;
+    point_list wgs84_nodes;
+    point_list normals;
+    point_list texcoords;
+    group_list tris_v;
+    group_list tris_tc; 
+    string_list tri_materials;
+    group_list strips_v;
+    group_list strips_tc; 
+    string_list strip_materials;
+    group_list fans_v;
+    group_list fans_tc;
+    string_list fan_materials;
+
+public:
+
+    inline unsigned short get_version() const { return version; }
+
+    inline Point3D get_gbs_center() const { return gbs_center; }
+    inline void set_gbs_center( Point3D p ) { gbs_center = p; }
+
+    inline float get_gbs_radius() const { return gbs_radius; }
+    inline void set_gbs_radius( float r ) { gbs_radius = r; }
+
+    inline point_list get_wgs84_nodes() const { return wgs84_nodes; }
+    inline void set_wgs84_nodes( point_list n ) { wgs84_nodes = n; }
+
+    inline point_list get_normals() const { return normals; }
+    inline void set_normals( point_list n ) { normals = n; }
+
+    inline point_list get_texcoords() const { return texcoords; }
+    inline void set_texcoords( point_list t ) { texcoords = t; }
+
+    inline group_list get_tris_v() const { return tris_v; }
+    inline void set_tris_v( group_list g ) { tris_v = g; }
+    inline group_list get_tris_tc() const { return tris_tc; }
+    inline void set_tris_tc( group_list g ) { tris_tc = g; }
+    inline string_list get_tri_materials() const { return tri_materials; }
+    inline void set_tri_materials( string_list s ) { tri_materials = s; }
+    
+    inline group_list get_strips_v() const { return strips_v; }
+    inline void set_strips_v( group_list g ) { strips_v = g; }
+    inline group_list get_strips_tc() const { return strips_tc; }
+    inline void set_strips_tc( group_list g ) { strips_tc = g; }
+    inline string_list get_strip_materials() const { return strip_materials; }
+    inline void set_strip_materials( string_list s ) { strip_materials = s; }
+    
+    inline group_list get_fans_v() const { return fans_v; }
+    inline void set_fans_v( group_list g ) { fans_v = g; }
+    inline group_list get_fans_tc() const { return fans_tc; }
+    inline void set_fans_tc( group_list g ) { fans_tc = g; }
+    inline string_list get_fan_materials() const { return fan_materials; }
+    inline void set_fan_materials( string_list s ) { fan_materials = s; }
+
+    /**
+     * Read a binary file object and populate the provided structures.
+     * @param file input file name
+     * @return result of read
+     */
+    bool read_bin( const string& file );
+
+    /** 
+     * Write out the structures to a binary file.  We assume that the
+     * groups come to us sorted by material property.  If not, things
+     * don't break, but the result won't be as optimal.
+     * @param base name of output path
+     * @param name name of output file
+     * @param b bucket for object location
+     * @return result of write
+     */
+    bool write_bin( const string& base, const string& name, const SGBucket& b );
+
+    /**
+     * Write out the structures to an ASCII file.  We assume that the
+     * groups come to us sorted by material property.  If not, things
+     * don't break, but the result won't be as optimal.
+     * @param base name of output path
+     * @param name name of output file
+     * @param b bucket for object location
+     * @return result of write
+     */
+    bool write_ascii( const string& base, const string& name,
+		      const SGBucket& b );
+};
+
+
+/**
+ * \relates SGBinObject
+ * Calculate the bounding sphere of a set of nodes.
+ * Center is the center of the tile and zero elevation.
+ * @param center center of our bounding radius
+ * @param wgs84_nodes list of points in wgs84 coordinates
+ * @return radius
+ */
+double sgCalcBoundingRadius( Point3D center, point_list& wgs84_nodes );
+
+
+#endif // _SG_BINOBJ_HXX

simgear/io/sg_file.cxx

@@ -0,0 +1,134 @@
+// sg_file.cxx -- File I/O routines
+//
+// Written by Curtis Olson, started November 1999.
+//
+// Copyright (C) 1999  Curtis L. Olson - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#include <simgear/compiler.h>
+
+#include STL_STRING
+
+#ifdef _MSC_VER
+#  include <io.h>
+#endif
+
+#include <simgear/debug/logstream.hxx>
+
+#include "sg_file.hxx"
+
+SG_USING_STD(string);
+
+
+SGFile::SGFile( const string &file) {
+    set_type( sgFileType );
+    file_name = file;
+}
+
+
+SGFile::~SGFile() {
+}
+
+
+// open the file based on specified direction
+bool SGFile::open( const SGProtocolDir d ) {
+    set_dir( d );
+
+    if ( get_dir() == SG_IO_OUT ) {
+#ifdef _MSC_VER
+        int mode = 00666;
+#else
+        mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH;
+#endif
+	fp = ::open( file_name.c_str(), O_WRONLY | O_CREAT | O_TRUNC, mode );
+    } else if ( get_dir() == SG_IO_IN ) {
+	fp = ::open( file_name.c_str(), O_RDONLY );
+    } else {
+	SG_LOG( SG_IO, SG_ALERT, 
+		"Error:  bidirection mode not available for files." );
+	return false;
+    }
+
+    if ( fp == -1 ) {
+	SG_LOG( SG_IO, SG_ALERT, "Error opening file: "	<< file_name );
+	return false;
+    }
+
+    return true;
+}
+
+
+// read a block of data of specified size
+int SGFile::read( char *buf, int length ) {
+    // read a chunk
+    return ::read( fp, buf, length );
+}
+
+
+// read a line of data, length is max size of input buffer
+int SGFile::readline( char *buf, int length ) {
+    // save our current position
+    int pos = lseek( fp, 0, SEEK_CUR );
+
+    // read a chunk
+    int result = ::read( fp, buf, length );
+
+    // find the end of line and reset position
+    int i;
+    for ( i = 0; i < result && buf[i] != '\n'; ++i );
+    if ( buf[i] == '\n' ) {
+	result = i + 1;
+    } else {
+	result = i;
+    }
+    lseek( fp, pos + result, SEEK_SET );
+    
+    // just in case ...
+    buf[ result ] = '\0';
+
+    return result;
+}
+
+
+// write data to a file
+int SGFile::write( const char *buf, const int length ) {
+    int result = ::write( fp, buf, length );
+    if ( result != length ) {
+	SG_LOG( SG_IO, SG_ALERT, "Error writing data: " << file_name );
+    }
+
+    return result;
+}
+
+
+// write null terminated string to a file
+int SGFile::writestring( const char *str ) {
+    int length = strlen( str );
+    return write( str, length );
+}
+
+
+// close the port
+bool SGFile::close() {
+    if ( ::close( fp ) == -1 ) {
+	return false;
+    }
+
+    return true;
+}

simgear/io/sg_file.hxx

@@ -0,0 +1,97 @@
+/** \file sg_file.hxx
+ * File I/O routines.
+ */
+
+// Written by Curtis Olson, started November 1999.
+//
+// Copyright (C) 1999  Curtis L. Olson - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#ifndef _SG_FILE_HXX
+#define _SG_FILE_HXX
+
+
+#ifndef __cplusplus
+# error This library requires C++
+#endif
+
+#include <simgear/compiler.h>
+
+#include <string>
+
+#include <sys/types.h>		// for open(), read(), write(), close()
+#include <sys/stat.h>		// for open(), read(), write(), close()
+#include <fcntl.h>		// for open(), read(), write(), close()
+#if !defined( _MSC_VER )
+#  include <unistd.h>		// for open(), read(), write(), close()
+#endif
+
+#include "iochannel.hxx"
+
+SG_USING_STD(string);
+
+
+/**
+ * A file I/O class based on SGIOChannel.
+ */
+class SGFile : public SGIOChannel {
+
+    string file_name;
+    int fp;
+
+public:
+
+    /**
+     * Create an instance of SGFile.
+     * When calling the constructor you need to provide a file
+     * name. This file is not opened immediately, but instead will be
+     * opened when the open() method is called.
+     * @param file name of file to open
+     */
+    SGFile( const string& file );
+
+    /** Destructor */
+    ~SGFile();
+
+    // open the file based on specified direction
+    bool open( const SGProtocolDir dir );
+
+    // read a block of data of specified size
+    int read( char *buf, int length );
+
+    // read a line of data, length is max size of input buffer
+    int readline( char *buf, int length );
+
+    // write data to a file
+    int write( const char *buf, const int length );
+
+    // write null terminated string to a file
+    int writestring( const char *str );
+
+    // close file
+    bool close();
+
+    /** @return the name of the file being manipulated. */
+    inline string get_file_name() const { return file_name; }
+};
+
+
+#endif // _SG_FILE_HXX
+
+

simgear/io/sg_serial.cxx

@@ -0,0 +1,157 @@
+// sg_serial.cxx -- Serial I/O routines
+//
+// Written by Curtis Olson, started November 1999.
+//
+// Copyright (C) 1999  Curtis L. Olson - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#include <simgear/compiler.h>
+
+#include STL_STRING
+
+#include <simgear/debug/logstream.hxx>
+#include <simgear/serial/serial.hxx>
+
+#include "sg_serial.hxx"
+
+SG_USING_STD(string);
+
+
+SGSerial::SGSerial( const string& device_name, const string& baud_rate ) :
+    save_len(0)
+{
+    set_type( sgSerialType );
+    device = device_name;
+    baud = baud_rate;
+}
+
+
+SGSerial::~SGSerial() {
+}
+
+
+// open the serial port based on specified direction
+bool SGSerial::open( const SGProtocolDir d ) {
+    set_dir( d );
+
+    if ( ! port.open_port( device ) ) {
+	SG_LOG( SG_IO, SG_ALERT, "Error opening device: " << device );
+	return false;
+    }
+
+    // cout << "fd = " << port.fd << endl;
+
+    if ( ! port.set_baud( atoi( baud.c_str() ) ) ) {
+	SG_LOG( SG_IO, SG_ALERT, "Error setting baud: " << baud );
+	return false;
+    }
+
+    return true;
+}
+
+
+// Read data from port.  If we don't get enough data, save what we did
+// get in the save buffer and return 0.  The save buffer will be
+// prepended to subsequent reads until we get as much as is requested.
+
+int SGSerial::read( char *buf, int length ) {
+    int result;
+
+    // read a chunk, keep in the save buffer until we have the
+    // requested amount read
+
+    char *buf_ptr = save_buf + save_len;
+    result = port.read_port( buf_ptr, length - save_len );
+    
+    if ( result + save_len == length ) {
+	strncpy( buf, save_buf, length );
+	save_len = 0;
+
+	return length;
+    }
+    
+    return 0;
+}
+
+
+// read data from port
+int SGSerial::readline( char *buf, int length ) {
+    int result;
+
+    // read a chunk, keep in the save buffer until we have the
+    // requested amount read
+
+    char *buf_ptr = save_buf + save_len;
+    result = port.read_port( buf_ptr, SG_IO_MAX_MSG_SIZE - save_len );
+    save_len += result;
+
+    // look for the end of line in save_buf
+    int i;
+    for ( i = 0; i < save_len && save_buf[i] != '\n'; ++i );
+    if ( save_buf[i] == '\n' ) {
+	result = i + 1;
+    } else {
+	// no end of line yet
+	return 0;
+    }
+
+    // we found an end of line
+
+    // copy to external buffer
+    strncpy( buf, save_buf, result );
+    buf[result] = '\0';
+    SG_LOG( SG_IO, SG_INFO, "fg_serial line = " << buf );
+
+    // shift save buffer
+    for ( i = result; i < save_len; ++i ) {
+	save_buf[ i - result ] = save_buf[i];
+    }
+    save_len -= result;
+
+    return result;
+}
+
+
+// write data to port
+int SGSerial::write( const char *buf, const int length ) {
+    int result = port.write_port( buf, length );
+
+    if ( result != length ) {
+	SG_LOG( SG_IO, SG_ALERT, "Error writing data: " << device );
+    }
+
+    return result;
+}
+
+
+// write null terminated string to port
+int SGSerial::writestring( const char *str ) {
+    int length = strlen( str );
+    return write( str, length );
+}
+
+
+// close the port
+bool SGSerial::close() {
+    if ( ! port.close_port() ) {
+	return false;
+    }
+
+    return true;
+}

simgear/io/sg_serial.hxx

@@ -0,0 +1,110 @@
+/**
+ * \file sg_serial.hxx
+ * Serial I/O routines
+ */
+
+// Written by Curtis Olson, started November 1999.
+//
+// Copyright (C) 1999  Curtis L. Olson - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#ifndef _SG_SERIAL_HXX
+#define _SG_SERIAL_HXX
+
+
+#ifndef __cplusplus
+# error This library requires C++
+#endif
+
+#include <simgear/compiler.h>
+
+#include <string>
+
+// #ifdef SG_HAVE_STD_INCLUDES
+// #  include <ctime>
+// #else
+// #  include <time.h>
+// #endif
+
+#include <simgear/serial/serial.hxx>
+
+#include "iochannel.hxx"
+
+SG_USING_STD(string);
+
+/**
+ * A serial I/O class based on SGIOChannel.
+ */
+class SGSerial : public SGIOChannel {
+
+    string device;
+    string baud;
+    FGSerialPort port;
+
+    char save_buf[ 2 * SG_IO_MAX_MSG_SIZE ];
+    int save_len;
+
+public:
+
+    /**
+     * Create an instance of SGSerial.
+     * This creates an instance of the SGSerial class. You need to
+     * provide the serial device name and desired baud rate.  For Unix
+     * style systems, device names will be similar to
+     * ``/dev/ttyS0''. For DOS style systems you may want to use
+     * something similar to ``COM1:''. As with the SGFile class,
+     * device is not opened immediately, but instead will be opened
+     * when the open() method is called.
+     * @param device_name name of serial device
+     * @param baud_rate speed of communication
+     */
+    SGSerial( const string& device_name, const string& baud_rate );
+
+    /** Destructor */
+    ~SGSerial();
+
+    // open the serial port based on specified direction
+    bool open( const SGProtocolDir d );
+
+    // read a block of data of specified size
+    int read( char *buf, int length );
+
+    // read a line of data, length is max size of input buffer
+    int readline( char *buf, int length );
+
+    // write data to port
+    int write( const char *buf, const int length );
+
+    // write null terminated string to port
+    int writestring( const char *str );
+
+    // close port
+    bool close();
+
+    /** @return the serial port device name */
+    inline string get_device() const { return device; }
+
+    /** @return the baud rate */
+    inline string get_baud() const { return baud; }
+};
+
+
+#endif // _SG_SERIAL_HXX
+
+

simgear/io/sg_socket.cxx

@@ -0,0 +1,547 @@
+// sg_socket.cxx -- Socket I/O routines
+//
+// Written by Curtis Olson, started November 1999.
+//
+// Copyright (C) 1999  Curtis L. Olson - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#include <simgear/compiler.h>
+
+#if !defined(_MSC_VER)
+#  include <sys/time.h>		// select()
+#  include <sys/types.h>	// socket(), bind(), select(), accept()
+#  include <sys/socket.h>	// socket(), bind(), listen(), accept()
+#  include <netinet/in.h>	// struct sockaddr_in
+#  include <netdb.h>		// gethostbyname()
+#  include <unistd.h>		// select(), fsync()/fdatasync(), fcntl()
+#  include <fcntl.h>		// fcntl()
+#endif
+
+#if defined( sgi )
+#include <strings.h>
+#endif
+
+#include <simgear/debug/logstream.hxx>
+
+#include "sg_socket.hxx"
+
+
+SGSocket::SGSocket( const string& host, const string& port, 
+		    const string& style ) :
+    hostname(host),
+    port_str(port),
+    save_len(0)
+{
+#if defined(_MSC_VER)
+    if (!wsock_init && !wsastartup()) {
+    	SG_LOG( SG_IO, SG_ALERT, "Winsock not available");
+    }
+#endif
+
+    if ( style == "udp" ) {
+	sock_style = SOCK_DGRAM;
+    } else if ( style == "tcp" ) {
+	sock_style = SOCK_STREAM;
+    } else {
+	sock_style = SOCK_DGRAM;
+	SG_LOG( SG_IO, SG_ALERT,
+		"Error: SGSocket() unknown style = " << style );
+    }
+
+    set_type( sgSocketType );
+}
+
+
+SGSocket::~SGSocket() {
+}
+
+
+SGSocket::SocketType SGSocket::make_server_socket () {
+    struct sockaddr_in name;
+
+#if defined( __CYGWIN__ ) || defined( __CYGWIN32__ ) || defined( sgi ) || defined( _MSC_VER )
+    int length;
+#else
+    socklen_t length;
+#endif
+     
+    // Create the socket.
+    sock = socket (PF_INET, sock_style, 0);
+    if (sock == INVALID_SOCKET) {
+        SG_LOG( SG_IO, SG_ALERT, 
+                "Error: socket() failed in make_server_socket()" );
+        return INVALID_SOCKET;
+    }
+     
+    // Give the socket a name.
+    name.sin_family = AF_INET;
+    name.sin_addr.s_addr = INADDR_ANY;
+    name.sin_port = htons(port); // set port to zero to let system pick
+    name.sin_addr.s_addr = htonl (INADDR_ANY);
+    if (bind (sock, (struct sockaddr *) &name, sizeof (name)) != 0) {
+	    SG_LOG( SG_IO, SG_ALERT,
+		    "Error: bind() failed in make_server_socket()" );
+        return INVALID_SOCKET;
+    }
+
+    // Find the assigned port number
+    length = sizeof(struct sockaddr_in);
+    if ( getsockname(sock, (struct sockaddr *) &name, &length) ) {
+	SG_LOG( SG_IO, SG_ALERT,
+		"Error: getsockname() failed in make_server_socket()" );
+        return INVALID_SOCKET;
+    }
+    port = ntohs(name.sin_port);
+
+    return sock;
+}
+
+
+SGSocket::SocketType SGSocket::make_client_socket () {
+    struct sockaddr_in name;
+    struct hostent *hp;
+     
+    SG_LOG( SG_IO, SG_INFO, "Make client socket()" );
+
+    // Create the socket.
+    sock = socket (PF_INET, sock_style, 0);
+    if (sock == INVALID_SOCKET) {
+        SG_LOG( SG_IO, SG_ALERT, 
+                "Error: socket() failed in make_server_socket()" );
+        return INVALID_SOCKET;
+    }
+     
+    // specify address family
+    name.sin_family = AF_INET;
+
+    // get the hosts official name/info
+    hp = gethostbyname( hostname.c_str() );
+
+    // Connect this socket to the host and the port specified on the
+    // command line
+#if defined( __CYGWIN__ ) || defined( __CYGWIN32__ )
+    bcopy(hp->h_addr, (char *)(&(name.sin_addr.s_addr)), hp->h_length);
+#else
+    bcopy(hp->h_addr, &(name.sin_addr.s_addr), hp->h_length);
+#endif
+    name.sin_port = htons(port);
+
+    if ( connect(sock, (struct sockaddr *) &name, 
+		 sizeof(struct sockaddr_in)) != 0 )
+    {
+	closesocket(sock);
+	SG_LOG( SG_IO, SG_ALERT, 
+		"Error: connect() failed in make_client_socket()" );
+	return INVALID_SOCKET;
+    }
+
+    return sock;
+}
+
+
+// Wrapper functions
+size_t SGSocket::readsocket( int fd, void *buf, size_t count ) {
+#if defined(_MSC_VER)
+    return ::recv( fd, (char *)buf, count, 0 );
+#else
+    return ::read( fd, buf, count );
+#endif
+}
+
+size_t SGSocket::writesocket( int fd, const void *buf, size_t count ) {
+#if defined(_MSC_VER)
+    return ::send( fd, (const char*)buf, count, 0 );
+#else
+    return ::write( fd, buf, count );
+#endif
+}
+
+#if !defined(_MSC_VER)
+int SGSocket::closesocket( int fd ) {
+    return ::close( fd );
+}
+#endif
+
+
+// If specified as a server (in direction for now) open the master
+// listening socket.  If specified as a client (out direction), open a
+// connection to a server.
+bool SGSocket::open( const SGProtocolDir d ) {
+    set_dir( d );
+
+    if ( port_str == "" || port_str == "any" ) {
+	port = 0; 
+    } else {
+	port = atoi( port_str.c_str() );
+    }
+    
+    // client_connections.clear();
+
+    if ( get_dir() == SG_IO_IN ) {
+	// this means server for now
+
+	// Setup socket to listen on.  Set "port" before making this
+	// call.  A port of "0" indicates that we want to let the os
+	// pick any available port.
+	sock = make_server_socket();
+	if ( sock == INVALID_SOCKET ) {
+	    SG_LOG( SG_IO, SG_ALERT, "socket creation failed" );
+	    return false;
+	}
+
+	SG_LOG( SG_IO, SG_INFO, "socket is connected to port = " << port );
+
+	if ( sock_style == SOCK_DGRAM ) {
+	    // Non-blocking UDP
+	    nonblock();
+	} else {
+	    // Blocking TCP
+	    // Specify the maximum length of the connection queue
+	    listen( sock, SG_MAX_SOCKET_QUEUE );
+	}
+
+    } else if ( get_dir() == SG_IO_OUT ) {
+	// this means client for now
+
+	sock = make_client_socket();
+	// TODO: check for error.
+
+	if ( sock_style == SOCK_DGRAM ) {
+	    // Non-blocking UDP
+	    nonblock();
+	}
+    } else if ( get_dir() == SG_IO_BI && sock_style == SOCK_STREAM ) {
+	// this means server for TCP sockets
+
+	// Setup socket to listen on.  Set "port" before making this
+	// call.  A port of "0" indicates that we want to let the os
+	// pick any available port.
+	sock = make_server_socket();
+	// TODO: check for error.
+
+	SG_LOG( SG_IO, SG_INFO, "socket is connected to port = " << port );
+
+	// Blocking TCP
+	// Specify the maximum length of the connection queue
+	listen( sock, SG_MAX_SOCKET_QUEUE );
+    } else {
+	SG_LOG( SG_IO, SG_ALERT, 
+		"Error:  bidirection mode not available for UDP sockets." );
+	return false;
+    }
+
+    if ( sock < 0 ) {
+	SG_LOG( SG_IO, SG_ALERT, "Error opening socket: " << hostname
+		<< ":" << port );
+	return false;
+    }
+
+    // extra SOCK_STREAM stuff
+    msgsock = INVALID_SOCKET;
+    first_read = false;
+
+    return true;
+}
+
+
+// read data from socket (server)
+// read a block of data of specified size
+int SGSocket::read( char *buf, int length ) {
+    if ( sock == INVALID_SOCKET ) {
+	return 0;
+    }
+
+    int result = 0;
+    // check for potential input
+    fd_set ready;
+    FD_ZERO(&ready);
+    FD_SET(sock, &ready);
+    struct timeval tv;
+    tv.tv_sec = 0;
+    tv.tv_usec = 0;
+
+    // test for any input available on sock (returning immediately, even if
+    // nothing)
+    select(32, &ready, 0, 0, &tv);
+
+    if ( FD_ISSET(sock, &ready) ) {
+	// cout << "data ready" << endl;
+
+	if ( sock_style == SOCK_STREAM ) {
+	    if ( msgsock == INVALID_SOCKET ) {
+		msgsock = accept(sock, 0, 0);
+		closesocket(sock);
+		sock = msgsock;
+	    } else {
+		result = readsocket( sock, buf, length );
+	    }
+	} else {
+	    result = readsocket( sock, buf, length );
+	}
+
+	if ( result != length ) {
+	    SG_LOG( SG_IO, SG_INFO, 
+		    "Warning: read() not enough bytes." );
+	}
+    }
+
+    return result;
+}
+
+
+// read a line of data, length is max size of input buffer
+int SGSocket::readline( char *buf, int length ) {
+    if ( sock == INVALID_SOCKET ) {
+	return 0;
+    }
+
+    // cout << "sock = " << sock << endl;
+
+    // check for potential input
+    fd_set ready;
+    FD_ZERO(&ready);
+    FD_SET(sock, &ready);
+    struct timeval tv;
+    tv.tv_sec = 0;
+    tv.tv_usec = 0;
+
+    // test for any input read on sock (returning immediately, even if
+    // nothing)
+    int result = select(32, &ready, 0, 0, &tv);
+    // cout << "result = " << result << endl;
+
+    if ( FD_ISSET(sock, &ready) ) {
+	// cout << "fd change state\n";
+	// read a chunk, keep in the save buffer until we have the
+	// requested amount read
+
+	if ( sock_style == SOCK_STREAM ) {
+	    // cout << "sock_stream\n";
+	    if ( msgsock == INVALID_SOCKET ) {
+		// cout << "msgsock == invalid\n";
+		msgsock = accept(sock, 0, 0);
+		closesocket(sock);
+		sock = msgsock;
+	    } else {
+		// cout << "ready to read\n";
+		char *buf_ptr = save_buf + save_len;
+		result = readsocket( sock, buf_ptr, SG_IO_MAX_MSG_SIZE
+				     - save_len );
+		// cout << "read result = " << result << endl;
+
+		if ( result > 0 ) {
+		    first_read = true;
+		}
+
+		save_len += result;
+
+		// Try and detect that the remote end died.  This
+		// could cause problems so if you see connections
+		// dropping for unexplained reasons, LOOK HERE!
+		if ( result == 0 && save_len == 0 && first_read == true ) {
+		    SG_LOG( SG_IO, SG_ALERT, 
+			    "Connection closed by foreign host." );
+		    closesocket(sock);
+		    open( get_dir() );
+		}
+	    }
+	} else {
+	    char *buf_ptr = save_buf + save_len;
+	    result = readsocket( sock, buf_ptr, SG_IO_MAX_MSG_SIZE - save_len );
+	    save_len += result;
+	}
+
+	// cout << "current read = " << buf_ptr << endl;
+	// cout << "current save_buf = " << save_buf << endl;
+	// cout << "save_len = " << save_len << endl;
+    } else {
+	// cout << "no data ready\n";
+    }
+
+    // look for the end of line in save_buf
+    int i;
+    for ( i = 0; i < save_len && save_buf[i] != '\n'; ++i );
+    if ( save_buf[i] == '\n' ) {
+	result = i + 1;
+    } else {
+	// no end of line yet
+	// cout << "no eol found" << endl;
+	return 0;
+    }
+    // cout << "line length = " << result << endl;
+
+    // we found an end of line
+
+    // copy to external buffer
+    strncpy( buf, save_buf, result );
+    buf[result] = '\0';
+    // cout << "sg_socket line = " << buf << endl;
+    
+    // shift save buffer
+    for ( i = result; i < save_len; ++i ) {
+	save_buf[ i - result ] = save_buf[i];
+    }
+    save_len -= result;
+
+    return result;
+}
+
+
+// write data to socket (client)
+int SGSocket::write( const char *buf, const int length ) {
+    if ( sock == INVALID_SOCKET ) {
+	return 0;
+    }
+
+    bool error_condition = false;
+
+    if ( writesocket(sock, buf, length) < 0 ) {
+	SG_LOG( SG_IO, SG_ALERT, "Error writing to socket: " << port );
+	error_condition = true;
+    }
+
+#if 0 
+    // check for any new client connection requests
+    fd_set ready;
+    FD_ZERO(&ready);
+    FD_SET(sock, &ready);
+    struct timeval tv;
+    tv.tv_sec = 0;
+    tv.tv_usec = 0;
+
+    // test for any input on sock (returning immediately, even if
+    // nothing)
+    select(32, &ready, 0, 0, &tv);
+
+    // any new connections?
+    if ( FD_ISSET(sock, &ready) ) {
+	int msgsock = accept(sock, 0, 0);
+	if ( msgsock < 0 ) {
+	    SG_LOG( SG_IO, SG_ALERT, 
+		    "Error: accept() failed in write()" );
+	    return 0;
+	} else {
+	    client_connections.push_back( msgsock );
+	}
+    }
+
+    SG_LOG( SG_IO, SG_INFO, "Client connections = " << 
+	    client_connections.size() );
+    for ( int i = 0; i < (int)client_connections.size(); ++i ) {
+	int msgsock = client_connections[i];
+
+	// read and junk any possible incoming messages.
+	// char junk[ SG_IO_MAX_MSG_SIZE ];
+	// std::read( msgsock, junk, SG_IO_MAX_MSG_SIZE );
+
+	// write the interesting data to the socket
+	if ( writesocket(msgsock, buf, length) == SOCKET_ERROR ) {
+	    SG_LOG( SG_IO, SG_ALERT, "Error writing to socket: " << port );
+	    error_condition = true;
+	} else {
+#ifdef _POSIX_SYNCHRONIZED_IO
+	    // fdatasync(msgsock);
+#else
+	    // fsync(msgsock);
+#endif
+	}
+    }
+#endif
+
+    if ( error_condition ) {
+	return 0;
+    }
+
+    return length;
+}
+
+
+// write null terminated string to socket (server)
+int SGSocket::writestring( const char *str ) {
+    if ( sock == INVALID_SOCKET ) {
+	return 0;
+    }
+
+    int length = strlen( str );
+    return write( str, length );
+}
+
+
+// close the port
+bool SGSocket::close() {
+    if ( sock == INVALID_SOCKET ) {
+	return 0;
+    }
+
+    closesocket( sock );
+    return true;
+}
+
+
+// configure the socket as non-blocking
+bool SGSocket::nonblock() {
+    if ( sock == INVALID_SOCKET ) {
+	return 0;
+    }
+
+#if defined(_MSC_VER)
+    u_long arg = 1;
+    if (ioctlsocket( sock, FIONBIO, &arg ) != 0) {
+        int error_code = WSAGetLastError();
+        SG_LOG( SG_IO, SG_ALERT, 
+                "Error " << error_code << ": unable to set non-blocking mode"
+);
+            return false;
+    }
+#else
+    fcntl( sock, F_SETFL, O_NONBLOCK );
+#endif
+    return true;
+}
+
+#if defined(_MSC_VER)
+
+bool SGSocket::wsock_init = false;
+
+bool
+SGSocket::wsastartup() {
+    WORD wVersionRequested;
+    WSADATA wsaData;
+
+    //wVersionRequested = MAKEWORD( 2, 2 );
+    wVersionRequested = MAKEWORD( 1, 1 );
+    int err = WSAStartup( wVersionRequested, &wsaData );
+    if (err != 0)
+    {
+        SG_LOG( SG_IO, SG_ALERT, "Error: Couldn't load winsock" );
+        return false;
+    }
+
+#if 0
+    if ( LOBYTE( wsaData.wVersion ) != 2 ||
+        HIBYTE( wsaData.wVersion ) != 2 ) {
+        SG_LOG( SG_IO, SG_ALERT, "Couldn't load a suitable winsock");
+        WSACleanup( );
+        return false;
+    }
+#endif
+    wsock_init = true;
+    return true;
+}
+#endif

simgear/io/sg_socket.hxx

@@ -0,0 +1,184 @@
+/**
+ * \file sg_socket.hxx
+ * Socket I/O routines.
+ */
+
+// Written by Curtis Olson, started November 1999.
+//
+// Copyright (C) 1999  Curtis L. Olson - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#ifndef _SG_SOCKET_HXX
+#define _SG_SOCKET_HXX
+
+
+#ifndef __cplusplus
+# error This library requires C++
+#endif
+
+#include <simgear/compiler.h>
+
+#include STL_STRING
+
+#include <simgear/math/sg_types.hxx>
+#include <simgear/io/iochannel.hxx>
+
+SG_USING_STD(string);
+
+#if defined(_MSC_VER)
+#  include <winsock.h>
+#endif
+
+#define SG_MAX_SOCKET_QUEUE 32
+
+
+/**
+ * A socket I/O class based on SGIOChannel.
+ */
+class SGSocket : public SGIOChannel {
+public:
+#if defined(_MSC_VER)
+    typedef SOCKET SocketType;
+#else
+    typedef int SocketType;
+#   define INVALID_SOCKET (-1)
+#endif
+
+private:
+    string hostname;
+    string port_str;
+
+    char save_buf[ 2 * SG_IO_MAX_MSG_SIZE ];
+    int save_len;
+
+    SocketType sock;
+    SocketType msgsock;
+    short unsigned int port;
+    int sock_style;			// SOCK_STREAM or SOCK_DGRAM
+
+    bool first_read;
+
+    // make a server (master listening) socket
+    SocketType make_server_socket();
+
+    // make a client socket
+    SocketType make_client_socket();
+
+    // wrapper functions
+    size_t readsocket( int fd, void *buf, size_t count );
+    size_t writesocket( int fd, const void *buf, size_t count );
+#if !defined(_MSC_VER)
+    int closesocket(int fd);
+#endif
+
+#if defined(_MSC_VER)
+    // Ensure winsock has been initialised.
+    static bool wsock_init;
+    static bool wsastartup();
+#endif
+
+public:
+
+    /**
+     * Create an instance of SGSocket.
+     *
+     * When calling the constructor you need to provide a host name, a
+     * port number, and a socket style. The convention used by the
+     * SGSocket class is that the server side listens and the client
+     * side sends. For a server socket, the host name should be
+     * empty. For a server, the port number is optional, if you do not
+     * specify a port, the system will assign one. For a client
+     * socket, you need to specify both a destination host and
+     * destination port. For both client and server sockets you must
+     * specify the socket type. Type must be either udp or tcp. Here's
+     * a quick breakdown of the major differences between UDP and TCP
+     * type sockets.
+     *
+     * TCP sockets are the type where you establish a connection and
+     * then can read and write to the socket from both ends. If one
+     * end of TCP socket connect quits, the other end will likely
+     * segfault if it doesn't take special precautions.  But, the nice
+     * thing about TCP connections is that the underlying protocol
+     * guarantees that your message will get through. This imposes a
+     * certain performance overhead though on the communication
+     * because the protocol must resend failed messages. TCP sockets
+     * are good for sending periodic command/response type messages
+     * where performance isn't a big issues, but reliability is.
+     *
+     * UDP sockets on the other hand are a lower level protocol and
+     * don't have the same sort of connection as TCP sockets. With UDP
+     * sockets, the server end just sits and listens for incoming
+     * packets from anywhere. The client end sends it's message and
+     * forgets about it. It doesn't care if there isn't even a server
+     * out there listening and all the packets are getting
+     * lost. Although systems/networks usually do a pretty good job
+     * (statistically) of getting your UDP packets to their
+     * destination, there is no guarantee that any particular packet
+     * will make it. But, because of this low level implementation and
+     * lack of error checking, UDP packets are much faster and
+     * efficient. UDP packets are good for sending positional
+     * information to synchronize two applications. In this case, you
+     * want the information to arrive as quickly as possible, and if
+     * you lose a packet, you'd rather get new updated information
+     * rather than have the system waste time resending a packet that
+     * is becoming older and older with every retry.
+     * @param host name of host if direction is SG_IO_OUT or SG_IO_BI
+     * @param port port number if we care to choose one.
+     * @param style specify "udp" or "tcp"
+     */
+    SGSocket( const string& host, const string& port, const string& style );
+
+    /** Destructor */
+    ~SGSocket();
+
+    // If specified as a server (in direction for now) open the master
+    // listening socket.  If specified as a client (out direction),
+    // open a connection to a server.
+    bool open( const SGProtocolDir d );
+
+    // read data from socket
+    int read( char *buf, int length );
+
+    // read data from socket
+    int readline( char *buf, int length );
+
+    // write data to a socket
+    int write( const char *buf, const int length );
+
+    // write null terminated string to a socket
+    int writestring( const char *str );
+
+    // close file
+    bool close();
+
+    /**
+     * Enable non-blocking mode.
+     * @return success/failure
+     */
+    bool nonblock();
+
+    /** @return the remote host name */
+    inline string get_hostname() const { return hostname; }
+
+    /** @return the port number (in string form) */
+    inline string get_port_str() const { return port_str; }
+};
+
+
+#endif // _SG_SOCKET_HXX

simgear/io/socktest.cxx

@@ -0,0 +1,46 @@
+#include <simgear/compiler.h>
+
+#include <unistd.h>
+#include STL_IOSTREAM
+
+#include "sg_socket.hxx"
+#include "lowlevel.hxx"
+
+#if !defined(SG_HAVE_NATIVE_SGI_COMPILERS)
+SG_USING_STD(cout);
+SG_USING_STD(endl);
+#endif
+
+static const int sgEndianTest = 1;
+#define sgIsLittleEndian (*((char *) &sgEndianTest ) != 0)
+#define sgIsBigEndian    (*((char *) &sgEndianTest ) == 0)
+
+int main() {
+
+    if ( sgIsLittleEndian ) {
+       cout << "this machine is little endian\n";
+    }
+
+    if ( sgIsBigEndian ) {
+       cout << "this machine is big endian\n";
+    }
+
+    cout << "short = " << sizeof(unsigned short) << endl;
+    cout << "int = " << sizeof(unsigned int) << endl;
+    cout << "long long = " << sizeof(long long) << endl;
+
+    SGSocket s( "", "5500", "tcp" );
+
+    if ( !s.open( SG_IO_BI ) ) {
+	cout << "error can't open socket\n";
+    }
+
+    char buf[256];
+
+    while ( true ) {
+	if ( s.readline( buf, 256 ) > 0 ) {
+	    cout << "result = " << buf;
+	}
+	sleep(1);
+    }
+}

simgear/magvar/Makefile.am

@@ -0,0 +1,17 @@
+includedir = @includedir@/magvar
+
+lib_LIBRARIES = libsgmagvar.a
+
+include_HEADERS = magvar.hxx
+
+libsgmagvar_a_SOURCES = \
+	coremag.hxx coremag.cxx \
+	magvar.cxx
+
+noinst_PROGRAMS = testmagvar
+
+testmagvar_SOURCES = testmagvar.cxx
+
+testmagvar_LDADD = $(top_builddir)/simgear/magvar/libsgmagvar.a
+
+INCLUDES += -I$(top_srcdir)

simgear/magvar/coremag.cxx

@@ -0,0 +1,452 @@
+// coremag.cxx -- compute local magnetic variation given position,
+//                altitude, and date
+//
+// This is an implementation of the NIMA (formerly DMA) WMM2000
+//
+//    http://www.nima.mil/GandG/ngdc-wmm2000.html
+//
+// Copyright (C) 2000  Edward A Williams <Ed_Williams@compuserve.com>
+//
+// Adapted from Excel 3.0 version 3/27/94 EAW
+// Recoded in C++ by Starry Chan
+// WMM95 added and rearranged in ANSI-C EAW 7/9/95
+// Put shell around program and made Borland & GCC compatible EAW 11/22/95
+// IGRF95 added 2/96 EAW
+// WMM2000 IGR2000 added 2/00 EAW
+// Released under GPL 3/26/00 EAW
+// Adaptions and modifications for the SimGear project  3/27/2000 CLO
+//
+// Removed all pow() calls and made static roots[][] arrays to
+// save many sqrt() calls on subsequent invocations
+// left old code as SGMagVarOrig() for testing purposes
+// 3/28/2000  Norman Vine -- nhv@yahoo.com
+//
+// Put in some bullet-proofing to handle magnetic and geographic poles.
+// 3/28/2000 EAW
+
+//  The routine uses a spherical harmonic expansion of the magnetic
+// potential up to twelfth order, together with its time variation, as
+// described in Chapter 4 of "Geomagnetism, Vol 1, Ed. J.A.Jacobs,
+// Academic Press (London 1987)". The program first converts geodetic
+// coordinates (lat/long on elliptic earth and altitude) to spherical
+// geocentric (spherical lat/long and radius) coordinates. Using this,
+// the spherical (B_r, B_theta, B_phi) magnetic field components are
+// computed from the model. These are finally referred to surface (X, Y,
+// Z) coordinates.
+//
+//   Fields are accurate to better than 200nT, variation and dip to
+// better than 0.5 degrees, with the exception of the declination near
+// the magnetic poles (where it is ill-defined) where the error may reach
+// 4 degrees or more.
+//
+//   Variation is undefined at both the geographic and  
+// magnetic poles, even though the field itself is well-behaved. To
+// avoid the routine blowing up, latitude entries corresponding to
+// the geographic poles are slightly offset. At the magnetic poles,
+// the routine returns zero variation.
+
+
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA  02111-1307, USA.
+//
+// $Id$
+
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+#include <simgear/constants.h>
+#include <simgear/sg_inlines.h>
+
+#include "coremag.hxx"
+
+
+static const double pi = 3.14159265358979;
+static const double a = 6378.16;	/* major radius (km) IAU66 ellipsoid */
+static const double f = 1.0 / 298.25;	/* inverse flattening IAU66 ellipsoid */
+static const double b = 6378.16 * (1.0 -1.0 / 298.25 );
+/* minor radius b=a*(1-f) */
+static const double r_0 = 6371.2;	/* "mean radius" for spherical harmonic expansion */
+
+static double gnm_wmm2000[13][13] =
+{
+    {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {-29616.0, -1722.7, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {-2266.7, 3070.2, 1677.6, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {1322.4, -2291.5, 1255.9, 724.8, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {932.1, 786.3, 250.6, -401.5, 106.2, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {-211.9, 351.6, 220.8, -134.5, -168.8, -13.3, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {73.8, 68.2, 74.1, -163.5, -3.8, 17.1, -85.1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {77.4, -73.9, 2.2, 35.7, 7.3, 5.2, 8.4, -1.5, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {23.3, 7.3, -8.5, -6.6, -16.9, 8.6, 4.9, -7.8, -7.6, 0.0, 0.0, 0.0, 0.0},
+    {5.7, 8.5, 2.0, -9.8, 7.6, -7.0, -2.0, 9.2, -2.2, -6.6, 0.0, 0.0, 0.0},
+    {-2.2, -5.7, 1.6, -3.7, -0.6, 4.1, 2.2, 2.2, 4.6, 2.3, 0.1, 0.0, 0.0},
+    {3.3, -1.1, -2.4, 2.6, -1.3, -1.7, -0.6, 0.4, 0.7, -0.3, 2.3, 4.2, 0.0},
+    {-1.5, -0.2, -0.3, 0.5, 0.2, 0.9, -1.4, 0.6, -0.6, -1.0, -0.3, 0.3, 0.4},
+};
+
+static double hnm_wmm2000[13][13]=
+{
+    {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, 5194.5, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, -2484.8, -467.9, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, -224.7, 293.0, -486.5, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, 273.3, -227.9, 120.9, -302.7, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, 42.0, 173.8, -135.0, -38.6, 105.2, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, -17.4, 61.2, 63.2, -62.9, 0.2, 43.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, -62.3, -24.5, 8.9, 23.4, 15.0, -27.6, -7.8, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, 12.4, -20.8, 8.4, -21.2, 15.5, 9.1, -15.5, -5.4, 0.0, 0.0, 0.0, 0.0},
+    {0.0, -20.4, 13.9, 12.0, -6.2, -8.6, 9.4, 5.0, -8.4, 3.2, 0.0, 0.0, 0.0},
+    {0.0, 0.9, -0.7, 3.9, 4.8, -5.3, -1.0, -2.4, 1.3, -2.3, -6.4, 0.0, 0.0},
+    {0.0, -1.5, 0.7, -1.1, -2.3, 1.3, -0.6, -2.8, -1.6, -0.1, -1.9, 1.4, 0.0},
+    {0.0, -1.0, 0.7, 2.2, -2.5, -0.2, 0.0, -0.2, 0.0, 0.2, -0.9, -0.2, 1.0},
+};
+
+static double gtnm_wmm2000[13][13]=
+{
+    {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {14.7, 11.1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {-13.6, -0.7, -1.8, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.3, -4.3, 0.9, -8.4, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {-1.6, 0.9, -7.6, 2.2, -3.2, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {-0.9, -0.2, -2.5, -2.7, -0.9, 1.7, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {1.2, 0.2, 1.7, 1.6, -0.1, -0.3, 0.8, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {-0.4, -0.8, -0.2, 1.1, 0.4, 0.0, -0.2, -0.2, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {-0.3, 0.6, -0.8, 0.3, -0.2, 0.5, 0.0, -0.6, 0.1, 0.0, 0.0, 0.0, 0.0},
+    {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+};
+
+static double htnm_wmm2000[13][13]=
+{
+    {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, -20.4, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, -21.5, -9.6, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, 6.4, -1.3, -13.3, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, 2.3, 0.7, 3.7, -0.5, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, 0.0, 2.1, 2.3, 3.1, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, -0.3, -1.7, -0.9, -1.0, -0.1, 1.9, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, 1.4, 0.2, 0.7, 0.4, -0.3, -0.8, -0.1, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, -0.5, 0.1, -0.2, 0.0, 0.1, -0.1, 0.3, 0.2, 0.0, 0.0, 0.0, 0.0},
+    {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+    {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0},
+};
+
+static const int nmax = 12;
+
+static double P[13][13];
+static double DP[13][13];
+static double gnm[13][13];
+static double hnm[13][13];
+static double sm[13];
+static double cm[13];
+
+static double root[13];
+static double roots[13][13][2];
+
+/* Convert date to Julian day    1950-2049 */
+unsigned long int yymmdd_to_julian_days( int yy, int mm, int dd )
+{
+    unsigned long jd;
+ 
+    yy = (yy < 50) ? (2000 + yy) : (1900 + yy);
+    jd = dd - 32075L + 1461L * (yy + 4800L + (mm - 14) / 12 ) / 4;
+    jd = jd + 367L * (mm - 2 - (mm - 14) / 12*12) / 12;
+    jd = jd - 3 * ((yy + 4900L + (mm - 14) / 12) / 100) / 4;
+
+    /* printf("julian date = %d\n", jd ); */
+    return jd;
+} 
+
+
+/*
+ * return variation (in radians) given geodetic latitude (radians),
+ * longitude(radians), height (km) and (Julian) date
+ * N and E lat and long are positive, S and W negative
+*/
+
+double calc_magvar( double lat, double lon, double h, long dat, double* field )
+{
+    /* output field B_r,B_th,B_phi,B_x,B_y,B_z */
+    int n,m;
+    /* reference dates */
+    long date0_wmm2000 = yymmdd_to_julian_days(0,1,1);
+
+    double yearfrac,sr,r,theta,c,s,psi,fn,fn_0,B_r,B_theta,B_phi,X,Y,Z;
+    double sinpsi, cospsi, inv_s;
+
+    static int been_here = 0;
+
+    double sinlat = sin(lat);
+    double coslat = cos(lat);
+
+    /* convert to geocentric coords: */
+    // sr = sqrt(pow(a*coslat,2.0)+pow(b*sinlat,2.0));
+    sr = sqrt(a*a*coslat*coslat + b*b*sinlat*sinlat);
+    /* sr is effective radius */
+    theta = atan2(coslat * (h*sr + a*a),
+		  sinlat * (h*sr + b*b));
+    /* theta is geocentric co-latitude */
+
+    r = h*h + 2.0*h * sr +
+	(a*a*a*a - ( a*a*a*a - b*b*b*b ) * sinlat*sinlat ) / 
+	(a*a - (a*a - b*b) * sinlat*sinlat );
+
+    r = sqrt(r);
+
+    /* r is geocentric radial distance */
+    c = cos(theta);
+    s = sin(theta);
+    /* protect against zero divide at geographic poles */
+    inv_s =  1.0 / (s + (s == 0.)*1.0e-8); 
+
+    /* zero out arrays */
+    for ( n = 0; n <= nmax; n++ ) {
+	for ( m = 0; m <= n; m++ ) {
+	    P[n][m] = 0;
+	    DP[n][m] = 0;
+	}
+    }
+
+    /* diagonal elements */
+    P[0][0] = 1;
+    P[1][1] = s;
+    DP[0][0] = 0;
+    DP[1][1] = c;
+    P[1][0] = c ;
+    DP[1][0] = -s;
+
+    // these values will not change for subsequent function calls
+    if( !been_here ) {
+	for ( n = 2; n <= nmax; n++ ) {
+	    root[n] = sqrt((2.0*n-1) / (2.0*n));
+	}
+
+	for ( m = 0; m <= nmax; m++ ) {
+	    double mm = m*m;
+	    for ( n = SG_MAX2(m + 1, 2); n <= nmax; n++ ) {
+		roots[m][n][0] = sqrt((n-1)*(n-1) - mm);
+		roots[m][n][1] = 1.0 / sqrt( n*n - mm);
+	    }
+	}
+	been_here = 1;
+    }
+
+    for ( n=2; n <= nmax; n++ ) {
+	// double root = sqrt((2.0*n-1) / (2.0*n));
+	P[n][n] = P[n-1][n-1] * s * root[n];
+	DP[n][n] = (DP[n-1][n-1] * s + P[n-1][n-1] * c) *
+	    root[n];
+    }
+
+    /* lower triangle */
+    for ( m = 0; m <= nmax; m++ ) {
+	// double mm = m*m;
+	for ( n = SG_MAX2(m + 1, 2); n <= nmax; n++ ) {
+	    // double root1 = sqrt((n-1)*(n-1) - mm);
+	    // double root2 = 1.0 / sqrt( n*n - mm);
+	    P[n][m] = (P[n-1][m] * c * (2.0*n-1) -
+		       P[n-2][m] * roots[m][n][0]) *
+		roots[m][n][1];
+
+	    DP[n][m] = ((DP[n-1][m] * c - P[n-1][m] * s) *
+			(2.0*n-1) - DP[n-2][m] * roots[m][n][0]) *
+		roots[m][n][1];
+	}
+    }
+
+    /* compute gnm, hnm at dat */
+    /* WMM2000 */
+    yearfrac = (dat - date0_wmm2000) / 365.25;
+    for ( n = 1; n <= nmax; n++ ) {
+	for ( m = 0; m <= nmax; m++ ) {
+	    gnm[n][m] = gnm_wmm2000[n][m] + yearfrac * gtnm_wmm2000[n][m];
+	    hnm[n][m] = hnm_wmm2000[n][m] + yearfrac * htnm_wmm2000[n][m];
+	}
+    }
+
+    /* compute sm (sin(m lon) and cm (cos(m lon)) */
+    for ( m = 0; m <= nmax; m++ ) {
+	sm[m] = sin(m * lon);
+	cm[m] = cos(m * lon);
+    }
+
+    /* compute B fields */
+    B_r = 0.0;
+    B_theta = 0.0;
+    B_phi = 0.0;
+    fn_0 = r_0/r;
+    fn = fn_0 * fn_0;
+
+    for ( n = 1; n <= nmax; n++ ) {
+	double c1_n=0;
+	double c2_n=0;
+	double c3_n=0;
+	for ( m = 0; m <= n; m++ ) {
+	    double tmp = (gnm[n][m] * cm[m] + hnm[n][m] * sm[m]); 
+	    c1_n=c1_n + tmp * P[n][m];
+	    c2_n=c2_n + tmp * DP[n][m];
+	    c3_n=c3_n + m * (gnm[n][m] * sm[m] - hnm[n][m] * cm[m]) * P[n][m];
+	}
+	// fn=pow(r_0/r,n+2.0);
+	fn *= fn_0;
+	B_r = B_r + (n + 1) * c1_n * fn;
+	B_theta = B_theta - c2_n * fn;
+	B_phi = B_phi + c3_n * fn * inv_s;
+    }
+
+    /* Find geodetic field components: */
+    psi = theta - ((pi / 2.0) - lat);
+    sinpsi = sin(psi);
+    cospsi = cos(psi);
+    X = -B_theta * cospsi - B_r * sinpsi;
+    Y = B_phi;
+    Z = B_theta * sinpsi - B_r * cospsi;
+
+    field[0]=B_r;
+    field[1]=B_theta;
+    field[2]=B_phi;
+    field[3]=X;
+    field[4]=Y;
+    field[5]=Z;   /* output fields */
+
+    /* find variation in radians */
+    /* return zero variation at magnetic pole X=Y=0. */
+    /* E is positive */
+    return (X != 0. || Y != 0.) ? atan2(Y, X) : (double) 0.;  
+}
+
+
+#ifdef TEST_NHV_HACKS
+double SGMagVarOrig( double lat, double lon, double h, long dat, double* field )
+{
+    /* output field B_r,B_th,B_phi,B_x,B_y,B_z */
+    int n,m;
+    /* reference dates */
+    long date0_wmm2000 = yymmdd_to_julian_days(0,1,1);
+
+    double yearfrac,sr,r,theta,c,s,psi,fn,B_r,B_theta,B_phi,X,Y,Z;
+
+    /* convert to geocentric coords: */
+    sr = sqrt(pow(a*cos(lat),2.0)+pow(b*sin(lat),2.0));
+    /* sr is effective radius */
+    theta = atan2(cos(lat) * (h * sr + a * a),
+		  sin(lat) * (h * sr + b * b));
+    /* theta is geocentric co-latitude */
+
+    r = h * h + 2.0*h * sr +
+	(pow(a,4.0) - (pow(a,4.0) - pow(b,4.0)) * pow(sin(lat),2.0)) / 
+	(a * a - (a * a - b * b) * pow(sin(lat),2.0));
+
+    r = sqrt(r);
+
+    /* r is geocentric radial distance */
+    c = cos(theta);
+    s = sin(theta);
+
+    /* zero out arrays */
+    for ( n = 0; n <= nmax; n++ ) {
+	for ( m = 0; m <= n; m++ ) {
+	    P[n][m] = 0;
+	    DP[n][m] = 0;
+	}
+    }
+
+    /* diagonal elements */
+    P[0][0] = 1;
+    P[1][1] = s;
+    DP[0][0] = 0;
+    DP[1][1] = c;
+    P[1][0] = c ;
+    DP[1][0] = -s;
+
+    for ( n = 2; n <= nmax; n++ ) {
+	P[n][n] = P[n-1][n-1] * s * sqrt((2.0*n-1) / (2.0*n));
+	DP[n][n] = (DP[n-1][n-1] * s + P[n-1][n-1] * c) *
+	    sqrt((2.0*n-1) / (2.0*n));
+    }
+
+    /* lower triangle */
+    for ( m = 0; m <= nmax; m++ ) {
+	for ( n = SG_MAX2(m + 1, 2); n <= nmax; n++ ) {
+	    P[n][m] = (P[n-1][m] * c * (2.0*n-1) - P[n-2][m] *
+		       sqrt(1.0*(n-1)*(n-1) - m * m)) /
+		sqrt(1.0* n * n - m * m);
+	    DP[n][m] = ((DP[n-1][m] * c - P[n-1][m] * s) *
+			(2.0*n-1) - DP[n-2][m] *
+			sqrt(1.0*(n-1) * (n-1) - m * m)) /
+		sqrt(1.0* n * n - m * m);
+	}
+    }
+
+    /* compute gnm, hnm at dat */
+    /* WMM2000 */
+    yearfrac = (dat - date0_wmm2000) / 365.25;
+    for ( n = 1; n <= nmax; n++ ) {
+	for ( m = 0; m <= nmax; m++ ) {
+	    gnm[n][m] = gnm_wmm2000[n][m] + yearfrac * gtnm_wmm2000[n][m];
+	    hnm[n][m] = hnm_wmm2000[n][m] + yearfrac * htnm_wmm2000[n][m];
+	}
+    }
+
+    /* compute sm (sin(m lon) and cm (cos(m lon)) */
+    for ( m = 0; m <= nmax; m++ ) {
+	sm[m] = sin(m * lon);
+	cm[m] = cos(m * lon);
+    }
+
+    /* compute B fields */
+    B_r = 0.0;
+    B_theta = 0.0;
+    B_phi = 0.0;
+
+    for ( n = 1; n <= nmax; n++ ) {
+	double c1_n=0;
+	double c2_n=0;
+	double c3_n=0;
+	for ( m = 0; m <= n; m++ ) {
+	    c1_n=c1_n + (gnm[n][m] * cm[m] + hnm[n][m] * sm[m]) * P[n][m];
+	    c2_n=c2_n + (gnm[n][m] * cm[m] + hnm[n][m] * sm[m]) * DP[n][m];
+	    c3_n=c3_n + m * (gnm[n][m] * sm[m] - hnm[n][m] * cm[m]) * P[n][m];
+	}
+	fn=pow(r_0/r,n+2.0);
+	B_r = B_r + (n + 1) * c1_n * fn;
+	B_theta = B_theta - c2_n * fn;
+	B_phi = B_phi + c3_n * fn / s;
+    }
+
+    /* Find geodetic field components: */
+    psi = theta - (pi / 2.0 - lat);
+    X = -B_theta * cos(psi) - B_r * sin(psi);
+    Y = B_phi;
+    Z = B_theta * sin(psi) - B_r * cos(psi);
+
+    field[0]=B_r;
+    field[1]=B_theta;
+    field[2]=B_phi;
+    field[3]=X;
+    field[4]=Y;
+    field[5]=Z;   /* output fields */
+
+    /* find variation, leave in radians! */
+    return atan2(Y, X);  /* E is positive */
+}
+#endif // TEST_NHV_HACKS

simgear/magvar/coremag.hxx

@@ -0,0 +1,51 @@
+// coremag.hxx -- compute local magnetic variation given position,
+//                altitude, and date
+//
+// This is an implimentation of the NIMA WMM 2000
+//
+//    http://www.nima.mil/GandG/ngdc-wmm2000.html
+//
+// Copyright (C) 2000  Edward A Williams <Ed_Williams@compuserve.com>
+//
+// Adapted from Excel 3.0 version 3/27/94 EAW
+// Recoded in C++ by Starry Chan
+// WMM95 added and rearranged in ANSI-C EAW 7/9/95
+// Put shell around program and made Borland & GCC compatible EAW 11/22/95
+// IGRF95 added 2/96 EAW
+// WMM2000 IGR2000 added 2/00 EAW
+// Released under GPL 3/26/00 EAW
+// Adaptions and modifications for the SimGear project  3/27/2000 CLO
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA  02111-1307, USA.
+//
+// $Id$
+
+
+#ifndef SG_MAGVAR_HXX
+#define SG_MAGVAR_HXX
+
+
+/* Convert date to Julian day    1950-2049 */
+unsigned long int yymmdd_to_julian_days( int yy, int mm, int dd );
+
+/* return variation (in degrees) given geodetic latitude (radians), longitude
+(radians) ,height (km) and (Julian) date
+N and E lat and long are positive, S and W negative
+*/
+double calc_magvar( double lat, double lon, double h, long dat, double* field );
+
+
+#endif // SG_MAGVAR_HXX

simgear/magvar/magvar.cxx

@@ -0,0 +1,54 @@
+// magvar.cxx -- magnetic variation wrapper class
+//
+// Written by Curtis Olson, started July 2000.
+//
+// Copyright (C) 2000  Curtis L. Olson  - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#include <math.h>
+
+#include <simgear/magvar/magvar.hxx>
+
+#include "coremag.hxx"
+#include "magvar.hxx"
+
+
+SGMagVar::SGMagVar() {
+}
+
+SGMagVar::~SGMagVar() {
+}
+
+
+void SGMagVar::update( double lon, double lat, double alt_m, double jd ) {
+    // Calculate local magnetic variation
+    double field[6];
+    // cout << "alt_m = " << alt_m << endl;
+    magvar = calc_magvar( lat, lon, alt_m / 1000.0, (long)jd, field );
+    magdip = atan(field[5]/sqrt(field[3]*field[3]+field[4]*field[4]));
+}
+
+
+double sgGetMagVar( double lon, double lat, double alt_m, double jd ) {
+    // cout << "lat = " << lat << " lon = " << lon << " elev = " << alt_m
+    //      << " JD = " << jd << endl;
+
+    double field[6];
+    return calc_magvar( lat, lon, alt_m / 1000.0, (long)jd, field );
+}

simgear/magvar/magvar.hxx

@@ -0,0 +1,99 @@
+/** 
+ * \file magvar.hxx
+ * Magnetic variation wrapper class.
+ */
+
+// Written by Curtis Olson, started July 2000.
+//
+// Copyright (C) 2000  Curtis L. Olson  - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or
+// modify it under the terms of the GNU General Public License as
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+
+
+#ifndef _MAGVAR_HXX
+#define _MAGVAR_HXX
+
+
+#ifndef __cplusplus                                                          
+# error This library requires C++
+#endif                                   
+
+
+/**
+ * Magnetic variation wrapper class.
+ *
+ * The SGMagVar class calculates the magnetic variation and dip for
+ * any position, altitude, and time. It is a complete
+ * re-implimentation of the NIMA WMM 2000 (not derived from their demo
+ * code.)
+ *
+ * The SGMagVar class is really a simple wrapper around the core Ed
+ * Williams code which does all the hard work.  This class allows you
+ * to crunch the math once and then do multiple polls of the
+ * data. However, if your position, altitude, or time has changed
+ * significantly, you should call the update() method to recrunch new
+ * numbers.
+ */
+class SGMagVar {
+
+private:
+
+    double magvar;
+    double magdip;
+
+public:
+
+    /**
+     * This creates an instance of the SGMagVar object.
+     * You must call the update() method before any queries will be valid.
+     */
+    SGMagVar();
+
+    /** Destructor */
+    ~SGMagVar();
+
+    /** Recalculate the magnetic offset and dip.
+     * The update() method requires you to pass in your position and
+     * the julian date. Lon and lat are specified in radians, altitude
+     * is specified in meters. Julian date can be conveniently
+     * calculated by using an instance of the SGTime class.
+     * @param lon longitude in radians
+     * @param lat latitude in radians
+     * @param alt_m altitude above sea level in meters
+     * @param jd julian date
+     */
+    void update( double lon, double lat, double alt_m, double jd );
+
+    /** @return the current magnetic variation in radians. */
+    double get_magvar() const { return magvar; }
+
+    /** @return the current magnetic dip in radians. */
+    double get_magdip() const { return magdip; }
+};
+
+
+/**
+ * \relates SGMagVar
+ * Lookup the magvar for any arbitrary location (This function doesn't
+ * save state like the SGMagVar class.  This function triggers a fair
+ * amount of CPU work, so use it cautiously.
+ * @return the magvar in radians
+ */
+double sgGetMagVar( double lon, double lat, double alt_m, double jd );
+
+
+#endif // _MAGVAR_HXX

simgear/magvar/testmagvar.cxx

@@ -0,0 +1,58 @@
+/* 2/14/00 fixed help message- dip angle (down positive), variation (E positive) */
+
+#include	<stdio.h>
+#include	<stdlib.h>
+#include	<math.h>
+
+#include <simgear/constants.h>
+
+#include "coremag.hxx"
+
+
+int main(int argc, char *argv[])
+{
+  /* args are double lat_deg, double lon_deg, double h, 
+                   int mm, int dd, int yy,int model */
+  /* output N, E, down components of B (nTesla)
+     dip angle (down positive), variation (E positive) */
+double lat_deg,lon_deg,h,var;
+int model,yy,mm,dd;
+double field[6];
+
+if ((argc != 8) && (argc !=7)) {
+fprintf(stdout,"Usage: mag lat_deg lon_deg h mm dd yy [model]\n");
+fprintf(stdout,"N latitudes, E longitudes positive degrees, h in km, mm dd yy is date\n");
+fprintf(stdout,"model 1,2,3,4,5,6,7 <=> IGRF90,WMM85,WMM90,WMM95,IGRF95,WMM2000,IGRF2000\n");
+fprintf(stdout,"Default model is IGRF2000, valid 1/1/00 - 12/31/05\n");
+fprintf(stdout,"Output Bx (N) By (E) Bz (down) (in nTesla) dip (degrees down positive)\n");
+fprintf(stdout,"variation (degrees E positive)\n");
+exit(1);
+}
+
+lat_deg=strtod(argv[1],NULL);
+lon_deg=strtod(argv[2],NULL);
+h=      strtod(argv[3],NULL);
+mm=     (int)strtol(argv[4],NULL,10);
+dd=     (int)strtol(argv[5],NULL,10);
+yy=     (int)strtol(argv[6],NULL,10);
+if (argc == 8){
+  model=  (int)strtol(argv[7],NULL,10);
+}else{
+  model=7;
+}
+
+
+var = calc_magvar( SGD_DEGREES_TO_RADIANS * lat_deg, SGD_DEGREES_TO_RADIANS * lon_deg, h,
+		   yymmdd_to_julian_days(yy,mm,dd), field );
+
+fprintf(stdout,"%6.0lf %6.0lf %6.0lf\n", field[0], field[1], field[2] );
+fprintf(stdout,"%6.0lf %6.0lf %6.0lf\n", field[3], field[4], field[5] );
+fprintf(stdout,"%6.0lf %6.0lf %6.0lf %4.2lf %4.2lf \n",
+  field[3],field[4],field[5],
+  SGD_RADIANS_TO_DEGREES * (atan(field[5]/pow(field[3]*field[3]+field[4]*field[4],0.5))),
+  SGD_RADIANS_TO_DEGREES * var);
+exit(0);
+}
+  
+  
+

simgear/math/MAT3geom.c

@@ -1,168 +0,0 @@
-/* #include "HEADERS.h" */
-/* Copyright 1988, Brown Computer Graphics Group.  All Rights Reserved. */
-
-/* --------------------------------------------------------------------------
- * This file contains routines that perform geometry-related operations
- * on matrices.
- * -------------------------------------------------------------------------*/
-
-#include "mat3defs.h"
-
-/* --------------------------  Static Routines	---------------------------- */
-
-/* -------------------------  Internal Routines  --------------------------- */
-
-/* --------------------------  Public Routines	---------------------------- */
-
-/*
- * This takes a matrix used to transform points, and returns a corresponding
- * matrix that can be used to transform direction vectors (between points).
- */
-
-void
-MAT3direction_matrix(register double (*result_mat)[4], register double (*mat)[4])
-{
-   register int i;
-
-   MAT3copy(result_mat, mat);
-
-   for (i = 0; i < 4; i++) result_mat[i][3] = result_mat[3][i] = 0.0;
-
-   result_mat[3][3] = 1.0;
-}
-
-/*
- * This takes a matrix used to transform points, and returns a corresponding
- * matrix that can be used to transform vectors that must remain perpendicular
- * to planes defined by the points.  It is useful when you are transforming
- * some object that has both points and normals in its definition, and you
- * only have the transformation matrix for the points.	This routine returns
- * FALSE if the normal matrix is uncomputable.	Otherwise, it returns TRUE.
- *
- * Spike sez: "This is the adjoint for the non-homogeneous part of the
- *	       transformation."
- */
-
-int
-MAT3normal_matrix(register double (*result_mat)[4], register double (*mat)[4])
-{
-   register int ret;
-   MAT3mat	tmp_mat;
-
-   MAT3direction_matrix(result_mat, mat);
-
-   if ( (ret = MAT3invert(tmp_mat, tmp_mat)) ) {
-       MAT3transpose(result_mat, tmp_mat);
-   }
-
-   return(ret);
-}
-
-/*
- * Sets the given matrix to be a scale matrix for the given vector of
- * scale values.
- */
-
-void
-MAT3scale(double (*result_mat)[4], double *scale)
-{
-   MAT3identity(result_mat);
-
-   result_mat[0][0] = scale[0];
-   result_mat[1][1] = scale[1];
-   result_mat[2][2] = scale[2];
-}
-
-/*
- * Sets up a matrix for a rotation about an axis given by the line from
- * (0,0,0) to axis, through an angle (in radians).
- * Looking along the axis toward the origin, the rotation is counter-clockwise.
- */
-
-#define SELECT	.7071	/* selection constant (roughly .5*sqrt(2) */
-
-void
-MAT3rotate(double (*result_mat)[4], double *axis, double angle_in_radians)
-{
-   MAT3vec	naxis,	/* Axis of rotation, normalized 		*/
-		base2,	/* 2nd unit basis vec, perp to axis		*/
-		base3;	/* 3rd unit basis vec, perp to axis & base2	*/
-   double	dot;
-   MAT3mat	base_mat,	/* Change-of-basis matrix		*/
-		base_mat_trans; /* Inverse of c-o-b matrix		*/
-   register int i;
-
-   /* Step 1: extend { axis } to a basis for 3-space: { axis, base2, base3 }
-    * which is orthonormal (all three have unit length, and all three are
-    * mutually orthogonal). Also should be oriented, i.e. axis cross base2 =
-    * base3, rather than -base3.
-    *
-    * Method: Find a vector linearly independent from axis. For this we
-    * either use the y-axis, or, if that is too close to axis, the
-    * z-axis. 'Too close' means that the dot product is too near to 1.
-    */
-
-   MAT3_COPY_VEC(naxis, axis);
-   MAT3_NORMALIZE_VEC(naxis, dot);
-
-   if (dot == 0.0) {
-       /* ERR_ERROR(MAT3_errid, ERR_SEVERE,
-		   (ERR_S, "Zero-length axis vector given to MAT3rotate")); */
-      return;
-   }
-
-   MAT3perp_vec(base2, naxis, TRUE);
-   MAT3cross_product(base3, naxis, base2);
-
-   /* Set up the change-of-basis matrix, and its inverse */
-   MAT3identity(base_mat);
-   MAT3identity(base_mat_trans);
-   MAT3identity(result_mat);
-
-   for (i = 0; i < 3; i++){
-      base_mat_trans[i][0] = base_mat[0][i] = naxis[i];
-      base_mat_trans[i][1] = base_mat[1][i] = base2[i];
-      base_mat_trans[i][2] = base_mat[2][i] = base3[i];
-   }
-
-   /* If T(u) = uR, where R is base_mat, then T(x-axis) = naxis,
-    * T(y-axis) = base2, and T(z-axis) = base3. The inverse of base_mat is
-    * its transpose.  OK?
-    */
-
-   result_mat[1][1] =	result_mat[2][2] = cos(angle_in_radians);
-   result_mat[2][1] = -(result_mat[1][2] = sin(angle_in_radians));
-
-   MAT3mult(result_mat, base_mat_trans, result_mat);
-   MAT3mult(result_mat, result_mat,	base_mat);
-}
-
-/*
- * Sets the given matrix to be a translation matrix for the given vector of
- * translation values.
- */
-
-void
-MAT3translate(double (*result_mat)[4], double *trans)
-{
-   MAT3identity(result_mat);
-
-   result_mat[3][0] = trans[0];
-   result_mat[3][1] = trans[1];
-   result_mat[3][2] = trans[2];
-}
-
-/*
- * Sets the given matrix to be a shear matrix for the given x and y shear
- * values.
- */
-
-void
-MAT3shear(double (*result_mat)[4], double xshear, double yshear)
-{
-   MAT3identity(result_mat);
-
-   result_mat[2][0] = xshear;
-   result_mat[2][1] = yshear;
-}
-

simgear/math/MAT3inv.c

@@ -1,311 +0,0 @@
-/* Copyright 1988, Brown Computer Graphics Group.  All Rights Reserved. */
-
-/* --------------------------------------------------------------------------
- * This file contains routines that operate solely on matrices.
- * -------------------------------------------------------------------------*/
-
-#include "mat3defs.h"
-
-/* --------------------------  Static Routines	---------------------------- */
-
-#define SMALL 1e-20		/* Small enough to be considered zero */
-
-/*
- * Shuffles rows in inverse of 3x3.  See comment in MAT3_inv3_second_col().
- */
-
-static void
-MAT3_inv3_swap( register double inv[3][3], int row0, int row1, int row2)
-{
-   register int i, tempi;
-   double	temp;
-
-#define SWAP_ROWS(a, b) \
-   for (i = 0; i < 3; i++) SWAP(inv[a][i], inv[b][i], temp); \
-   SWAP(a, b, tempi)
-
-   if (row0 != 0){
-      if (row1 == 0) {
-	 SWAP_ROWS(row0, row1);
-      }
-      else {
-	 SWAP_ROWS(row0, row2);
-      }
-   }
-
-   if (row1 != 1) {
-      SWAP_ROWS(row1, row2);
-   }
-}
-
-/*
- * Does Gaussian elimination on second column.
- */
-
-static int
-MAT3_inv3_second_col (register double source[3][3], register double inv[3][3], int row0)
-{
-   register int row1, row2, i1, i2, i;
-   double	temp;
-   double	a, b;
-
-   /* Find which row to use */
-   if	   (row0 == 0)	i1 = 1, i2 = 2;
-   else if (row0 == 1)	i1 = 0, i2 = 2;
-   else 		i1 = 0, i2 = 1;
-
-   /* Find which is larger in abs. val.:the entry in [i1][1] or [i2][1]	*/
-   /* and use that value for pivoting.					*/
-
-   a = source[i1][1]; if (a < 0) a = -a;
-   b = source[i2][1]; if (b < 0) b = -b;
-   if (a > b) 	row1 = i1;
-   else		row1 = i2;
-   row2 = (row1 == i1 ? i2 : i1);
-
-   /* Scale row1 in source */
-   if ((source[row1][1] < SMALL) && (source[row1][1] > -SMALL)) return(FALSE);
-   temp = 1.0 / source[row1][1];
-   source[row1][1]  = 1.0;
-   source[row1][2] *= temp;	/* source[row1][0] is zero already */
-
-   /* Scale row1 in inv */
-   inv[row1][row1]  = temp;	/* it used to be a 1.0 */
-   inv[row1][row0] *= temp;
-
-   /* Clear column one, source, and make corresponding changes in inv */
-
-   for (i = 0; i < 3; i++) if (i != row1) {	/* for i = all rows but row1 */
-   temp = -source[i][1];
-      source[i][1]  = 0.0;
-      source[i][2] += temp * source[row1][2];
-
-      inv[i][row1]  = temp * inv[row1][row1];
-      inv[i][row0] += temp * inv[row1][row0];
-   }
-
-   /* Scale row2 in source */
-   if ((source[row2][2] < SMALL) && (source[row2][2] > -SMALL)) return(FALSE);
-   temp = 1.0 / source[row2][2];
-   source[row2][2] = 1.0;	/* source[row2][*] is zero already */
-
-   /* Scale row2 in inv */
-   inv[row2][row2]  = temp;	/* it used to be a 1.0 */
-   inv[row2][row0] *= temp;
-   inv[row2][row1] *= temp;
-
-   /* Clear column one, source, and make corresponding changes in inv */
-   for (i = 0; i < 3; i++) if (i != row2) {	/* for i = all rows but row2 */
-   temp = -source[i][2];
-      source[i][2] = 0.0;
-      inv[i][row0] += temp * inv[row2][row0];
-      inv[i][row1] += temp * inv[row2][row1];
-      inv[i][row2] += temp * inv[row2][row2];
-   }
-
-   /*
-    * Now all is done except that the inverse needs to have its rows shuffled.
-    * row0 needs to be moved to inv[0][*], row1 to inv[1][*], etc.
-    *
-    * We *didn't* do the swapping before the elimination so that we could more
-    * easily keep track of what ops are needed to be done in the inverse.
-    */
-   MAT3_inv3_swap(inv, row0, row1, row2);
-
-   return(TRUE);
-}
-
-/*
- * Fast inversion routine for 3 x 3 matrices.	- Written by jfh.
- *
- * This takes 30 multiplies/divides, as opposed to 39 for Cramer's Rule.
- * The algorithm consists of performing fast gaussian elimination, by never
- * doing any operations where the result is guaranteed to be zero, or where
- * one operand is guaranteed to be zero. This is done at the cost of clarity,
- * alas.
- *
- * Returns 1 if the inverse was successful, 0 if it failed.
- */
-
-static int
-MAT3_invert3 (register double source[3][3], register double inv[3][3])
-{
-   register int i, row0;
-   double	temp;
-   double	a, b, c;
-
-   inv[0][0] = inv[1][1] = inv[2][2] = 1.0;
-   inv[0][1] = inv[0][2] = inv[1][0] = inv[1][2] = inv[2][0] = inv[2][1] = 0.0;
-
-   /* attempt to find the largest entry in first column to use as pivot */
-   a = source[0][0]; if (a < 0) a = -a;
-   b = source[1][0]; if (b < 0) b = -b;
-   c = source[2][0]; if (c < 0) c = -c;
-
-   if (a > b) {
-      if (a > c) row0 = 0;
-      else row0 = 2;
-   }
-   else { 
-      if (b > c) row0 = 1;
-      else row0 = 2;
-   }
-
-   /* Scale row0 of source */
-   if ((source[row0][0] < SMALL) && (source[row0][0] > -SMALL)) return(FALSE);
-   temp = 1.0 / source[row0][0];
-   source[row0][0]  = 1.0;
-   source[row0][1] *= temp;
-   source[row0][2] *= temp;
-
-   /* Scale row0 of inverse */
-   inv[row0][row0] = temp;	/* other entries are zero -- no effort	*/
-
-   /* Clear column zero of source, and make corresponding changes in inverse */
-
-   for (i = 0; i < 3; i++) if (i != row0) {	/* for i = all rows but row0 */
-      temp = -source[i][0];
-      source[i][0]  = 0.0;
-      source[i][1] += temp * source[row0][1];
-      source[i][2] += temp * source[row0][2];
-      inv[i][row0]  = temp * inv[row0][row0];
-   }
-
-   /*
-    * We've now done gaussian elimination so that the source and
-    * inverse look like this:
-    *
-    *	1 * *		* 0 0
-    *	0 * *		* 1 0
-    *	0 * *		* 0 1
-    *
-    * We now proceed to do elimination on the second column.
-    */
-   if (! MAT3_inv3_second_col(source, inv, row0)) return(FALSE);
-
-   return(TRUE);
-}
-
-/*
- * Finds a new pivot for a non-simple 4x4.  See comments in MAT3invert().
- */
-
-static int
-MAT3_inv4_pivot (register MAT3mat src, MAT3vec r, double *s, int *swap)
-{
-   register int i, j;
-   double	temp, max;
-
-   *swap = -1;
-
-   if (MAT3_IS_ZERO(src[3][3])) {
-
-      /* Look for a different pivot element: one with largest abs value */
-      max = 0.0;
-
-      for (i = 0; i < 4; i++) {
-	 if	 (src[i][3] >  max) max =  src[*swap = i][3];
-	 else if (src[i][3] < -max) max = -src[*swap = i][3];
-      }
-
-      /* No pivot element available ! */
-      if (*swap < 0) return(FALSE);
-
-      else for (j = 0; j < 4; j++) SWAP(src[*swap][j], src[3][j], temp);
-   }
-
-   MAT3_SET_VEC (r, -src[0][3], -src[1][3], -src[2][3]);
-
-   *s = 1.0 / src[3][3];
-
-   src[0][3] = src[1][3] = src[2][3] = 0.0;
-   src[3][3]			     = 1.0;
-
-   MAT3_SCALE_VEC(src[3], src[3], *s);
-
-   for (i = 0; i < 3; i++) {
-      src[0][i] += r[0] * src[3][i];
-      src[1][i] += r[1] * src[3][i];
-      src[2][i] += r[2] * src[3][i];
-   }
-
-   return(TRUE);
-}
-
-/* -------------------------  Internal Routines  --------------------------- */
-
-/* --------------------------  Public Routines	---------------------------- */
-
-/*
- * This returns the inverse of the given matrix.  The result matrix
- * may be the same as the one to invert.
- *
- * Fast inversion routine for 4 x 4 matrices, written by jfh.
- *
- * Returns 1 if the inverse was successful, 0 if it failed.
- *
- * This routine has been specially tweaked to notice the following:
- * If the matrix has the form
- *	  * * * 0
- *	  * * * 0
- *	  * * * 0
- *	  * * * 1
- *
- * (as do many matrices in graphics), then we compute the inverse of
- * the upper left 3x3 matrix and use this to find the general inverse.
- *
- *   In the event that the right column is not 0-0-0-1, we do gaussian
- * elimination to make it so, then use the 3x3 inverse, and then do
- * our gaussian elimination.
- */
-
-int
-MAT3invert(double (*result_mat)[4], double (*mat)[4])
-{
-   MAT3mat		src, inv;
-   register int 	i, j, simple;
-   double		m[3][3], inv3[3][3], s, temp;
-   MAT3vec		r, t;
-   int			swap;
-
-   MAT3copy(src, mat);
-   MAT3identity(inv);
-
-   /* If last column is not (0,0,0,1), use special code */
-   simple = (mat[0][3] == 0.0 && mat[1][3] == 0.0 &&
-	     mat[2][3] == 0.0 && mat[3][3] == 1.0);
-
-   if (! simple && ! MAT3_inv4_pivot(src, r, &s, &swap)) return(FALSE);
-
-   MAT3_COPY_VEC(t, src[3]);	/* Translation vector */
-
-   /* Copy upper-left 3x3 matrix */
-   for (i = 0; i < 3; i++) for (j = 0; j < 3; j++) m[i][j] = src[i][j];
-
-   if (! MAT3_invert3(m, inv3)) return(FALSE);
-
-   for (i = 0; i < 3; i++) for (j = 0; j < 3; j++) inv[i][j] = inv3[i][j];
-
-   for (i = 0; i < 3; i++) for (j = 0; j < 3; j++)
-      inv[3][i] -= t[j] * inv3[j][i];
-
-   if (! simple) {
-
-      /* We still have to undo our gaussian elimination from earlier on */
-      /* add r0 * first col to last col */
-      /* add r1 * 2nd	col to last col */
-      /* add r2 * 3rd	col to last col */
-
-      for (i = 0; i < 4; i++) {
-	 inv[i][3] += r[0] * inv[i][0] + r[1] * inv[i][1] + r[2] * inv[i][2];
-	 inv[i][3] *= s;
-      }
-
-      if (swap >= 0)
-	 for (i = 0; i < 4; i++) SWAP(inv[i][swap], inv[i][3], temp);
-   }
-
-   MAT3copy(result_mat, inv);
-
-   return(TRUE);
-}

simgear/math/MAT3mat.c

@@ -1,120 +0,0 @@
-/* #include "HEADERS.h" */
-/* Copyright 1988, Brown Computer Graphics Group.  All Rights Reserved. */
-
-/* --------------------------------------------------------------------------
- * This file contains routines that operate solely on matrices.
- * -------------------------------------------------------------------------*/
-
-
-#ifdef HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
-#ifdef WIN32
-#  ifndef HAVE_STL_SGI_PORT
-#    ifdef __BORLANDC__
-#      include <mem.h>
-#    else
-#      include <memory.h>      /* required for memset() and memcpy() */
-#    endif
-#  endif
-#endif
-
-#include <string.h>
-#include "mat3defs.h"
-
-MAT3mat identityMatrix = {
-    { 1.0, 0.0, 0.0, 0.0 },
-    { 0.0, 1.0, 0.0, 0.0 },
-    { 0.0, 0.0, 1.0, 0.0 },
-    { 0.0, 0.0, 0.0, 1.0 }
-};
-
-/* #include "macros.h" */
-
-/* --------------------------  Static Routines	---------------------------- */
-
-/* -------------------------  Internal Routines  --------------------------- */
-
-/* --------------------------  Public Routines	---------------------------- */
-
-
-#if !defined( USE_XTRA_MAT3_INLINES )
-
-/*
- * This multiplies two matrices, producing a third, which may the same as
- * either of the first two.
- */
-
-void
-MAT3mult (double (*result_mat)[4], register double (*mat1)[4], register double (*mat2)[4])
-{
-   register int i, j;
-   MAT3mat	tmp_mat;
-
-   for (i = 0; i < 4; i++)
-      for (j = 0; j < 4; j++)
-         tmp_mat[i][j] = (mat1[i][0] * mat2[0][j] +
-		       mat1[i][1] * mat2[1][j] +
-		       mat1[i][2] * mat2[2][j] +
-		       mat1[i][3] * mat2[3][j]);
-   MAT3copy (result_mat, tmp_mat);
-}
-#endif // !defined( USE_XTRA_MAT3_INLINES )
-
-/*
- * This returns the transpose of a matrix.  The result matrix may be
- * the same as the one to transpose.
- */
-
-void
-MAT3transpose (double (*result_mat)[4], register double (*mat)[4])
-{
-   register int i, j;
-   MAT3mat	tmp_mat;
-
-   for (i = 0; i < 4; i++) 
-      for (j = 0; j < 4; j++) 
-         tmp_mat[i][j] = mat[j][i];
-
-   MAT3copy (result_mat, tmp_mat);
-}
-
-
-/*
- * This prints the given matrix to the given file pointer.
- */
-
-void
-MAT3print(double (*mat)[4], FILE *fp)
-{
-   MAT3print_formatted(mat, fp, CNULL, CNULL, CNULL, CNULL);
-}
-
-/*
- * This prints the given matrix to the given file pointer.
- * use the format string to pass to fprintf.  head and tail
- * are printed at the beginning and end of each line.
- */
-
-void
-MAT3print_formatted(double (*mat)[4], FILE *fp, char *title, char *head, char *format, char *tail)
-{
-   register int i, j;
-
-   /* This is to allow this to be called easily from a debugger */
-   if (fp == NULL) fp = stderr;
-
-   if (title  == NULL)	title  = "MAT3 matrix:\n";
-   if (head   == NULL)	head   = "  ";
-   if (format == NULL)	format = "%#8.4lf  ";
-   if (tail   == NULL)	tail   = "\n";
-
-   (void) fprintf(fp, title);
-
-   for (i = 0; i < 4; i++) {
-      (void) fprintf(fp, head);
-      for (j = 0; j < 4; j++) (void) fprintf(fp, format, mat[i][j]);
-      (void) fprintf(fp, tail);
-   }
-}

simgear/math/MAT3vec.c

@@ -1,154 +0,0 @@
-/* Copyright 1988, Brown Computer Graphics Group.  All Rights Reserved. */
-
-/* --------------------------------------------------------------------------
- * This file contains routines that operate on matrices and vectors, or
- * vectors and vectors.
- * -------------------------------------------------------------------------*/
-
-/* #include "sphigslocal.h" */
-
-/* --------------------------  Static Routines	---------------------------- */
-
-/* -------------------------  Internal Routines  --------------------------- */
-
-/* --------------------------  Public Routines	---------------------------- */
-
-/*
- * Multiplies a vector by a matrix, setting the result vector.
- * It assumes all homogeneous coordinates are 1.
- * The two vectors involved may be the same.
- */
-
-#include "mat3.h"
-
-#ifndef TRUE
-#  define TRUE 1
-#endif
-
-#ifndef FALSE
-#  define FALSE 0
-#endif
-
-#if !defined( USE_XTRA_MAT3_INLINES )
-
-void
-MAT3mult_vec(double *result_vec, register double *vec, register double (*mat)[4])
-{
-   MAT3vec		tempvec;
-   register double	*temp = tempvec;
-
-   temp[0] =	vec[0] * mat[0][0] + vec[1] * mat[1][0] +
-		vec[2] * mat[2][0] +	      mat[3][0];
-   temp[1] =	vec[0] * mat[0][1] + vec[1] * mat[1][1] +
-		vec[2] * mat[2][1] +	      mat[3][1];
-   temp[2] =	vec[0] * mat[0][2] + vec[1] * mat[1][2] +
-		vec[2] * mat[2][2] +	      mat[3][2];
-
-   MAT3_COPY_VEC(result_vec, temp);
-}
-#endif // !defined( USE_XTRA_MAT3_INLINES )
-
-/*
- * Multiplies a vector of size 4 by a matrix, setting the result vector.
- * The fourth element of the vector is the homogeneous coordinate, which
- * may or may not be 1.  If the "normalize" parameter is TRUE, then the
- * result vector will be normalized so that the homogeneous coordinate is 1.
- * The two vectors involved may be the same.
- * This returns zero if the vector was to be normalized, but couldn't be.
- */
-
-int
-MAT3mult_hvec(double *result_vec, register double *vec, register double (*mat)[4], int normalize)
-{
-   MAT3hvec             tempvec;
-   double		norm_fac;
-   register double	*temp = tempvec;
-   register int 	ret = TRUE;
-
-   temp[0] =	vec[0] * mat[0][0] + vec[1] * mat[1][0] +
-		vec[2] * mat[2][0] + vec[3] * mat[3][0];
-   temp[1] =	vec[0] * mat[0][1] + vec[1] * mat[1][1] +
-		vec[2] * mat[2][1] + vec[3] * mat[3][1];
-   temp[2] =	vec[0] * mat[0][2] + vec[1] * mat[1][2] +
-		vec[2] * mat[2][2] + vec[3] * mat[3][2];
-   temp[3] =	vec[0] * mat[0][3] + vec[1] * mat[1][3] +
-		vec[2] * mat[2][3] + vec[3] * mat[3][3];
-
-   /* Normalize if asked for, possible, and necessary */
-   if (normalize) {
-      if (MAT3_IS_ZERO(temp[3])) {
-#ifndef THINK_C
-	 fprintf (stderr,
-		  "Can't normalize vector: homogeneous coordinate is 0");
-#endif
-	 ret = FALSE;
-      }
-      else {
-	 norm_fac = 1.0 / temp[3];
-	 MAT3_SCALE_VEC(result_vec, temp, norm_fac);
-	 result_vec[3] = 1.0;
-      }
-   }
-   else MAT3_COPY_HVEC(result_vec, temp);
-
-   return(ret);
-}
-
-#if !defined( USE_XTRA_MAT3_INLINES )
-
-/*
- * Sets the first vector to be the cross-product of the last two vectors.
- */
-
-void
-MAT3cross_product(double *result_vec, register double *vec1, register double *vec2)
-{
-   MAT3vec		tempvec;
-   register double	*temp = tempvec;
-
-   temp[0] = vec1[1] * vec2[2] - vec1[2] * vec2[1];
-   temp[1] = vec1[2] * vec2[0] - vec1[0] * vec2[2];
-   temp[2] = vec1[0] * vec2[1] - vec1[1] * vec2[0];
-
-   MAT3_COPY_VEC(result_vec, temp);
-}
-#endif // !defined( USE_XTRA_MAT3_INLINES )
-
-/*
- * Finds a vector perpendicular to vec and stores it in result_vec.
- * Method:  take any vector (we use <0,1,0>) and subtract the
- * portion of it pointing in the vec direction.  This doesn't
- * work if vec IS <0,1,0> or is very near it.  So if this is
- * the case, use <0,0,1> instead.
- * If "is_unit" is TRUE, the given vector is assumed to be unit length.
- */
-
-#define SELECT	.7071	/* selection constant (roughly .5*sqrt(2) */
-
-void
-MAT3perp_vec(double *result_vec, double *vec, int is_unit)
-{
-   MAT3vec	norm;
-   double	dot;
-
-   MAT3_SET_VEC(result_vec, 0.0, 1.0, 0.0);
-
-   MAT3_COPY_VEC(norm, vec);
-
-   if (! is_unit) MAT3_NORMALIZE_VEC(norm, dot);
-
-   /* See if vector is too close to <0,1,0>.  If so, use <0,0,1> */
-   if ((dot = MAT3_DOT_PRODUCT(norm, result_vec)) > SELECT || dot < -SELECT) {
-      result_vec[1] = 0.0;
-      result_vec[2] = 1.0;
-      dot = MAT3_DOT_PRODUCT(norm, result_vec);
-   }
-
-   /* Subtract off non-perpendicular part */
-   result_vec[0] -= dot * norm[0];
-   result_vec[1] -= dot * norm[1];
-   result_vec[2] -= dot * norm[2];
-
-   /* Make result unit length */
-   MAT3_NORMALIZE_VEC(result_vec, dot);
-}

simgear/math/Makefile.am

@@ -1,32 +1,33 @@
 includedir = @includedir@/math
 
+if HAVE_ZLIB
+ZLIB_INCL =
+else
+ZLIB_INCL = -I$(top_srcdir)/src/zlib
+endif
+
 lib_LIBRARIES = libsgmath.a
 
 include_HEADERS = \
-	fg_geodesy.hxx \
-	fg_memory.h \
-	fg_random.h \
-	fg_types.hxx \
 	interpolater.hxx \
 	leastsqs.hxx \
-	mat3.h \
+	localconsts.hxx \
 	point3d.hxx \
 	polar3d.hxx \
+	sg_geodesy.hxx \
+	sg_memory.h \
+	sg_random.h \
+	sg_types.hxx \
 	vector.hxx
 
 EXTRA_DIST = linintp2.h linintp2.inl sphrintp.h sphrintp.inl
 
 libsgmath_a_SOURCES = \
-	MAT3geom.c \
-	MAT3inv.c \
-	MAT3mat.c \
-	MAT3vec.c \
-	fg_geodesy.cxx \
-	fg_random.c \
 	interpolater.cxx \
 	leastsqs.cxx \
-	mat3defs.h mat3err.h \
 	polar3d.cxx \
+	sg_geodesy.cxx \
+	sg_random.c \
 	vector.cxx
 
-INCLUDES += -I$(top_builddir)/src
+INCLUDES += -I$(top_srcdir) $(ZLIB_INCL)

simgear/math/fg_memory.h

@@ -1,59 +0,0 @@
-// fg_memory.h -- memcpy/bcopy portability declarations
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-
-
-#ifndef _FG_MEMORY_H
-#define _FG_MEMORY_H
-
-#ifdef HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
-#ifdef HAVE_MEMCPY
-
-#  ifdef HAVE_MEMORY_H
-#    include <memory.h>
-#  endif
-
-#  define fgmemcmp            memcmp
-#  define fgmemcpy            memcpy
-#  define fgmemzero(dest,len) memset(dest,0,len)
-
-#elif defined(HAVE_BCOPY)
-
-#  define fgmemcmp              bcmp
-#  define fgmemcpy(dest,src,n)  bcopy(src,dest,n)
-#  define fgmemzero             bzero
-
-#else
-
-/* 
- * Neither memcpy() or bcopy() available.
- * Use substitutes provided be zlib.
- */
-
-#  include <zutil.h>
-#  define fgmemcmp zmemcmp
-#  define fgmemcpy zmemcpy
-#  define fgmemzero zmemzero
-
-#endif
-
-#endif // _FG_MEMORY_H
-
-

simgear/math/fg_random.c

@@ -1,71 +0,0 @@
-// fg_random.c -- routines to handle random number generation
-//
-// Written by Curtis Olson, started July 1997.
-//
-// Copyright (C) 1997  Curtis L. Olson  - curt@infoplane.com
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-
-
-#ifdef HAVE_CONFIG_H
-#  include <config.h>
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>         // for random(), srandom()
-#include <time.h>           // for time() to seed srandom()        
-
-#include "fg_random.h"
-
-#ifndef HAVE_RAND
-#  ifdef sgi
-#    undef RAND_MAX
-#    define RAND_MAX 2147483647
-#  endif
-#endif
-
-#ifdef __SUNPRO_CC
-    extern "C" {
-	long int random(void);
-	void srandom(unsigned int seed);
-    }
-#endif
-
-
-// Seed the random number generater with time() so we don't see the
-// same sequence every time
-void fg_srandom(void) {
-    // fgPrintf( FG_MATH, FG_INFO, "Seeding random number generater\n");
-
-#ifdef HAVE_RAND
-    srand(time(NULL));
-#else
-    srandom(time(NULL));
-#endif                                       
-}
-
-
-// return a random number between [0.0, 1.0)
-double fg_random(void) {
-#ifdef HAVE_RAND
-    return(rand() / (double)RAND_MAX);
-#else
-    return(random() / (double)RAND_MAX);
-#endif
-}
-
-

simgear/math/fg_random.h

@@ -1,48 +0,0 @@
-// fg_random.h -- routines to handle random number generation
-//
-// Written by Curtis Olson, started July 1997.
-//
-// Copyright (C) 1997  Curtis L. Olson  - curt@infoplane.com
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-
-
-#ifndef _FG_RANDOM_H
-#define _FG_RANDOM_H
-
-
-#ifdef __cplusplus                                                          
-extern "C" {                            
-#endif                                   
-
-
-// Seed the random number generater with time() so we don't see the
-// same sequence every time
-void fg_srandom(void);
-
-// return a random number between [0.0, 1.0)
-double fg_random(void);
-
-
-#ifdef __cplusplus
-}
-#endif
-
-
-#endif // _FG_RANDOM_H
-
-

simgear/math/fg_types.hxx

@@ -1,73 +0,0 @@
-// fg_types.hxx -- commonly used types I don't want to have to keep redefining
-//
-// Written by Curtis Olson, started March 1999.
-//
-// Copyright (C) 1999  Curtis L. Olson  - curt@flightgear.org
-//
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
-//
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
-//
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
-//
-// $Id$
-
-
-#ifndef _FG_TYPES_HXX
-#define _FG_TYPES_HXX
-
-
-#ifndef __cplusplus                                                          
-# error This library requires C++
-#endif                                   
-
-
-#include <simgear/compiler.h>
-
-#include STL_STRING
-#include <vector>
-
-#include <simgear/math/point3d.hxx>
-
-FG_USING_STD(vector);
-FG_USING_STD(string);
-
-
-typedef vector < int > int_list;
-typedef int_list::iterator int_list_iterator;
-typedef int_list::const_iterator const_int_list_iterator;
-
-typedef vector < Point3D > point_list;
-typedef point_list::iterator point_list_iterator;
-typedef point_list::const_iterator const_point_list_iterator;
-
-typedef vector < string > string_list;
-typedef string_list::iterator string_list_iterator;
-typedef string_list::const_iterator const_string_list_iterator;
-
-
-class point2d {
-public:
-    union {
-	double x;
-	double dist;
-	double lon;
-    };
-    union {
-	double y;
-	double theta;
-	double lat;
-    };
-};
-
-
-#endif // _FG_TYPES_HXX
-

simgear/math/interpolater.cxx

@@ -6,102 +6,121 @@
 //
 // Copyright (C) 1998  Curtis L. Olson  - curt@me.umn.edu
 //
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
 //
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
+// Library General Public License for more details.
 //
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA  02111-1307, USA.
 //
 // $Id$
 
 
 #include <simgear/compiler.h>
 
-#ifdef __MWERKS__
 #include <stdlib.h> // for exit()
-#endif
 
 #include STL_STRING
 
-#include <simgear/fg_zlib.h>
+// depricated - #include <simgear/sg_zlib.h>
 #include <simgear/debug/logstream.hxx>
-#include <simgear/misc/fgstream.hxx>
+#include <simgear/misc/sgstream.hxx>
 
 #include "interpolater.hxx"
 
+SG_USING_STD(string);
+
+// Constructor -- starts with an empty table.
+SGInterpTable::SGInterpTable()
+    : size(0)
+{
+}
+
 
 // Constructor -- loads the interpolation table from the specified
 // file
-fgINTERPTABLE::fgINTERPTABLE( const string& file ) {
-    FG_LOG( FG_MATH, FG_INFO, "Initializing Interpolator for " << file );
+SGInterpTable::SGInterpTable( const string& file ) 
+  : size(0)
+{
+    SG_LOG( SG_MATH, SG_INFO, "Initializing Interpolator for " << file );
 
-    fg_gzifstream in( file );
-    if ( !in ) {
-        FG_LOG( FG_GENERAL, FG_ALERT, "Cannot open file: " << file );
+    sg_gzifstream in( file );
+    if ( !in.is_open() ) {
+        SG_LOG( SG_GENERAL, SG_ALERT, "Cannot open file: " << file );
 	exit(-1);
     }
 
-    size = 0;
     in >> skipcomment;
     while ( in ) {
-	if ( size < MAX_TABLE_SIZE ) {
-	    in >> table[size][0] >> table[size][1];
-	    size++;
-	} else {
-            FG_LOG( FG_MATH, FG_ALERT,
-		    "fgInterpolateInit(): Exceed max table size = "
-		    << MAX_TABLE_SIZE );
-	    exit(-1);
-	}
+      double ind, dep;
+      in >> ind >> dep;
+      in >> skipws;
+      table.push_back(Entry(ind, dep));
+      size++;
     }
 }
 
 
+// Add an entry to the table.
+void SGInterpTable::addEntry (double ind, double dep)
+{
+  table.push_back(Entry(ind,dep));
+  size++;
+}
+
+
 // Given an x value, linearly interpolate the y value from the table
-double fgINTERPTABLE::interpolate(double x) {
+double SGInterpTable::interpolate(double x) const
+{
     int i;
     double y;
 
+    if (size == 0.0)
+      return 0.0;
+
     i = 0;
 
-    while ( (x > table[i][0]) && (i < size) ) {
+    while ( (i < size) && (x > table[i].ind) ) {
+	// cout << "  i = " << i << " table[i].ind = " << table[i].ind << endl;
+	// cout << "  size = " << size << endl;
 	i++;
     }
 
     // printf ("i = %d ", i);
 
-    if ( (i == 0) && (x < table[0][0]) ) {
-	FG_LOG( FG_MATH, FG_ALERT, 
-		"fgInterpolateInit(): lookup error, x to small = " << x );
-	return(0.0);
+    if ( (i == 0) && (x < table[0].ind) ) {
+	SG_LOG( SG_MATH, SG_DEBUG, 
+		"interpolate(): lookup error, x to small = " << x );
+	return table[0].dep;
     }
 
-    if ( x > table[i][0] ) {
-	FG_LOG( FG_MATH, FG_ALERT, 
-		"fgInterpolateInit(): lookup error, x to big = " << x );
-	return(0.0);
+    // cout << " table[size-1].ind = " << table[size-1].ind << endl;
+    if ( x > table[size-1].ind ) {
+	SG_LOG( SG_MATH, SG_DEBUG, 
+		"interpolate(): lookup error, x to big = " << x );
+	return table[size-1].dep;
     }
 
     // y = y1 + (y0 - y1)(x - x1) / (x0 - x1)
-    y = table[i][1] + 
-	( (table[i-1][1] - table[i][1]) * 
-	  (x - table[i][0]) ) /
-	(table[i-1][0] - table[i][0]);
+    y = table[i].dep + 
+	( (table[i-1].dep - table[i].dep) * 
+	  (x - table[i].ind) ) /
+	(table[i-1].ind - table[i].ind);
 
     return(y);
 }
 
 
 // Destructor
-fgINTERPTABLE::~fgINTERPTABLE( void ) {
+SGInterpTable::~SGInterpTable() {
 }
 
 

simgear/math/interpolater.hxx

@@ -1,24 +1,27 @@
-//
-// interpolater.hxx -- routines to handle linear interpolation from a table of
-//                     x,y   The table must be sorted by "x" in ascending order
-//
+/**
+ * \file interpolater.hxx
+ * Routines to handle linear interpolation from a table of x,y The
+ * table must be sorted by "x" in ascending order
+ */
+
 // Written by Curtis Olson, started April 1998.
 //
 // Copyright (C) 1998  Curtis L. Olson  - curt@me.umn.edu
 //
-// This program is free software; you can redistribute it and/or
-// modify it under the terms of the GNU General Public License as
-// published by the Free Software Foundation; either version 2 of the
-// License, or (at your option) any later version.
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
 //
-// This program is distributed in the hope that it will be useful, but
-// WITHOUT ANY WARRANTY; without even the implied warranty of
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-// General Public License for more details.
+// Library General Public License for more details.
 //
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA  02111-1307, USA.
 //
 // $Id$
 
@@ -33,27 +36,66 @@
 
 #include <simgear/compiler.h>
 
+#include <vector>
+SG_USING_STD(vector);
+
 #include STL_STRING
-FG_USING_STD(string);
-
-#define MAX_TABLE_SIZE 32
+SG_USING_STD(string);
 
 
-class fgINTERPTABLE {
+/**
+ * A class that provids a simple linear 2d interpolation lookup table.
+ * The actual table is expected to be loaded from a file.  The
+ * independant variable must be strictly ascending.  The dependent
+ * variable can be anything.
+ */
+class SGInterpTable {
+
+    struct Entry
+    {
+      Entry ()
+	: ind(0.0L), dep(0.0L) {}
+      Entry (double independent, double dependent)
+	: ind(independent), dep(dependent) {}
+      double ind;
+      double dep;
+    };
+
     int size;
-    double table[MAX_TABLE_SIZE][2];
+    vector<Entry> table;
 
 public:
 
-    // Constructor -- loads the interpolation table from the specified
-    // file
-    fgINTERPTABLE( const string& file );
+    /**
+     * Constructor. Creates a new, empty table.
+     */
+    SGInterpTable();
 
-    // Given an x value, linearly interpolate the y value from the table
-    double interpolate(double x);
+    /**
+     * Constructor. Loads the interpolation table from the specified file.
+     * @param file name of interpolation file
+     */
+    SGInterpTable( const string& file );
 
-    // Destructor
-    ~fgINTERPTABLE( void );
+
+    /**
+     * Add an entry to the table, extending the table's length.
+     *
+     * @param ind The independent variable.
+     * @param dep The dependent variable.
+     */
+    void addEntry (double ind, double dep);
+    
+
+    /**
+     * Given an x value, linearly interpolate the y value from the table.
+     * @param x independent variable
+     * @return interpolated dependent variable
+     */
+    double interpolate(double x) const;
+
+    /** Destructor */
+    ~SGInterpTable();
 };
 
 

simgear/math/leastsqs.cxx

@@ -4,19 +4,20 @@
 //
 // Copyright (C) 1997  Curtis L. Olson  - curt@infoplane.com
 //
-// This program is free software; you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation; either version 2 of the License, or
-// (at your option) any later version.
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
 //
-// This program is distributed in the hope that it will be useful,
+// This library is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
 //
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA  02111-1307, USA.
 //
 // $Id$
 //

simgear/math/leastsqs.hxx

@@ -1,25 +1,28 @@
-// leastsqs.h -- Implements a simple linear least squares best fit routine
-//
+/**
+ * \file leastsqs.hxx
+ * Implements a simple linear least squares best fit routine.
+ */
+
 // Written by Curtis Olson, started September 1997.
 //
 // Copyright (C) 1997  Curtis L. Olson  - curt@infoplane.com
 //
-// This program is free software; you can redistribute it and/or modify
-// it under the terms of the GNU General Public License as published by
-// the Free Software Foundation; either version 2 of the License, or
-// (at your option) any later version.
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
 //
-// This program is distributed in the hope that it will be useful,
+// This library is distributed in the hope that it will be useful,
 // but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-// GNU General Public License for more details.
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
 //
-// You should have received a copy of the GNU General Public License
-// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA  02111-1307, USA.
 //
 // $Id$
-///
 
 
 #ifndef _LEASTSQS_H
@@ -31,39 +34,47 @@
 #endif                                   
 
 
-/* 
-Least squares fit:
+/**
+Classical least squares fit:
 
-y = b0 + b1x
+\f[
+    y = b_0 + b_1 * x
+\f]
 
-     n*sum(xi*yi) - (sum(xi)*sum(yi))
-b1 = --------------------------------
-     n*sum(xi^2) - (sum(xi))^2
+\f[
+    b_1 = \frac{n * \sum_0^{i-1} (x_i*y_i) - \sum_0^{i-1} x_i* \sum_0^{i-1} y_i}
+          {n*\sum_0^{i-1} x_i^2 - (\sum_0^{i-1} x_i)^2}
+\f]
 
-
-b0 = sum(yi)/n - b1*(sum(xi)/n)
+\f[
+    b_0 = \frac{\sum_0^{i-1} y_i}{n} - b_1 * \frac{\sum_0^{i-1} x_i}{n}
+\f]
 */
-
 void least_squares(double *x, double *y, int n, double *m, double *b);
 
-/* incrimentally update existing values with a new data point */
+
+/**
+ * Incrimentally update existing values with a new data point.
+ */
 void least_squares_update(double x, double y, double *m, double *b);
 
 
-/* 
-  return the least squares error:
+/**
+  @return the least squares error:.
+\f[
 
-              (y[i] - y_hat[i])^2
-              -------------------
-                      n
+    \frac{(y_i - \hat{y}_i)^2}{n}
+\f]
 */
 double least_squares_error(double *x, double *y, int n, double m, double b);
 
 
-/* 
-  return the maximum least squares error:
+/**
+  @return the maximum least squares error.
 
-              (y[i] - y_hat[i])^2
+\f[
+    (y_i - \hat{y}_i)^2
+\f]
 */
 double least_squares_max_error(double *x, double *y, int n, double m, double b);
 

simgear/math/localconsts.hxx

@@ -0,0 +1,42 @@
+// localconsts.hxx -- various constant that are shared 
+//
+// Written by Curtis Olson, started September 2000.
+//
+// Copyright (C) 2000  Curtis L. Olson  - curt@flightgear.org
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Library General Public
+// License as published by the Free Software Foundation; either
+// version 2 of the License, or (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Library General Public License for more details.
+//
+// You should have received a copy of the GNU Library General Public
+// License along with this library; if not, write to the
+// Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+// Boston, MA  02111-1307, USA.
+//
+// $Id$
+
+
+#ifndef _SG_LOCAL_CONSTS_HXX
+#define _SG_LOCAL_CONSTS_HXX
+
+
+// Value of earth flattening parameter from ref [8] 
+//
+//      Note: FP = f
+//            E  = 1-f
+//            EPS = sqrt(1-(1-f)^2)
+//
+
+static const double FP =   0.003352813178;
+static const double E  =   0.996647186;
+static const double EPS =  0.081819221;
+static const double INVG = 0.031080997;
+
+
+#endif // _SG_LOCAL_CONSTS_HXX

simgear/math/mat3.h

@@ -1,233 +0,0 @@
-/* Copyright 1988, Brown Computer Graphics Group.  All Rights Reserved. */
-
-/* -------------------------------------------------------------------------
-		       Public MAT3 include file
-   ------------------------------------------------------------------------- */
-
-#ifndef MAT3_HAS_BEEN_INCLUDED
-#define MAT3_HAS_BEEN_INCLUDED
-
-/* -----------------------------  Constants  ------------------------------ */
-
-/*
- * Make sure the math library .h file is included, in case it wasn't.
- */
-
-#ifndef HUGE
-#include <math.h>
-#endif
-#include <stdio.h>
-
-#include <string.h>
-#include <simgear/math/fg_memory.h>
-
-#ifdef __cplusplus                                                          
-extern "C" {                            
-#endif                                   
-
-
-#define MAT3_DET0	-1			/* Indicates singular mat */
-#define MAT3_EPSILON	1e-12			/* Close enough to zero   */
-
-#ifdef M_PI
-#  define  MAT3_PI    M_PI
-#else
-#  define  MAT3_PI    3.14159265358979323846
-#endif
-
-#define USE_XTRA_MAT3_INLINES
-
-#if defined(i386)
-#define USE_X86_ASM
-#endif
-
-#if defined(USE_X86_ASM)
-static __inline__ int FloatToInt(float f)
-{
-   int r;
-   __asm__ ("fistpl %0" : "=m" (r) : "t" (f) : "st");
-   return r;
-}
-#elif  defined(__MSC__) && defined(__WIN32__)
-static __inline int FloatToInt(float f)
-{
-   int r;
-   _asm {
-     fld f
-     fistp r
-    }
-   return r;
-}
-#else
-#define FloatToInt(F) ((int) ((F) < 0.0f ? (F)-0.5f : (F)+0.5f))
-#endif
-
-/* ------------------------------  Types  --------------------------------- */
-
-typedef double MAT3mat[4][4];		/* 4x4 matrix			 */
-typedef double MAT3vec[3];		/* Vector			 */
-typedef double MAT3hvec[4];             /* Vector with homogeneous coord */
-
-/* ------------------------------  Macros  -------------------------------- */
-
-extern MAT3mat identityMatrix;
-
-/* Tests if a number is within EPSILON of zero */
-#define MAT3_IS_ZERO(N) 	((N) < MAT3_EPSILON && (N) > -MAT3_EPSILON)
-
-/* Sets a vector to the three given values */
-#define MAT3_SET_VEC(V,X,Y,Z)	((V)[0]=(X), (V)[1]=(Y), (V)[2]=(Z))
-
-/* Tests a vector for all components close to zero */
-#define MAT3_IS_ZERO_VEC(V)	(MAT3_IS_ZERO((V)[0]) && \
-				 MAT3_IS_ZERO((V)[1]) && \
-				 MAT3_IS_ZERO((V)[2]))
-
-/* Dot product of two vectors */
-#define MAT3_DOT_PRODUCT(V1,V2) \
-			((V1)[0]*(V2)[0] + (V1)[1]*(V2)[1] + (V1)[2]*(V2)[2])
-
-/* Copy one vector to other */
-#define MAT3_COPY_VEC(TO,FROM)	((TO)[0] = (FROM)[0], \
-				 (TO)[1] = (FROM)[1], \
-				 (TO)[2] = (FROM)[2])
-
-/* Normalize vector to unit length, using TEMP as temporary variable.
- * TEMP will be zero if vector has zero length */
-#define MAT3_NORMALIZE_VEC(V,TEMP) \
-	if ((TEMP = sqrt(MAT3_DOT_PRODUCT(V,V))) > MAT3_EPSILON) { \
-	   TEMP = 1.0 / TEMP; \
-	   MAT3_SCALE_VEC(V,V,TEMP); \
-	} else TEMP = 0.0
-
-/* Scale vector by given factor, storing result vector in RESULT_V */
-#define MAT3_SCALE_VEC(RESULT_V,V,SCALE) \
-	MAT3_SET_VEC(RESULT_V, (V)[0]*(SCALE), (V)[1]*(SCALE), (V)[2]*(SCALE))
-
-/* Adds vectors V1 and V2, storing result in RESULT_V */
-#define MAT3_ADD_VEC(RESULT_V,V1,V2) \
-	MAT3_SET_VEC(RESULT_V, (V1)[0]+(V2)[0], (V1)[1]+(V2)[1], \
-			       (V1)[2]+(V2)[2])
-
-/* Subtracts vector V2 from V1, storing result in RESULT_V */
-#define MAT3_SUB_VEC(RESULT_V,V1,V2) \
-	MAT3_SET_VEC(RESULT_V, (V1)[0]-(V2)[0], (V1)[1]-(V2)[1], \
-			       (V1)[2]-(V2)[2])
-
-/* Multiplies vectors V1 and V2, storing result in RESULT_V */
-#define MAT3_MULT_VEC(RESULT_V,V1,V2) \
-	MAT3_SET_VEC(RESULT_V, (V1)[0]*(V2)[0], (V1)[1]*(V2)[1], \
-			       (V1)[2]*(V2)[2])
-
-/* Sets RESULT_V to the linear combination of V1 and V2, scaled by
- * SCALE1 and SCALE2, respectively */
-#define MAT3_LINEAR_COMB(RESULT_V,SCALE1,V1,SCALE2,V2) \
-	MAT3_SET_VEC(RESULT_V,	(SCALE1)*(V1)[0] + (SCALE2)*(V2)[0], \
-				(SCALE1)*(V1)[1] + (SCALE2)*(V2)[1], \
-				(SCALE1)*(V1)[2] + (SCALE2)*(V2)[2])
-
-/* Several of the vector macros are useful for homogeneous-coord vectors */
-#define MAT3_SET_HVEC(V,X,Y,Z,W) ((V)[0]=(X), (V)[1]=(Y), \
-				  (V)[2]=(Z), (V)[3]=(W))
-
-#define MAT3_COPY_HVEC(TO,FROM) ((TO)[0] = (FROM)[0], \
-				 (TO)[1] = (FROM)[1], \
-				 (TO)[2] = (FROM)[2], \
-				 (TO)[3] = (FROM)[3])
-
-#define MAT3_SCALE_HVEC(RESULT_V,V,SCALE) \
-	MAT3_SET_HVEC(RESULT_V, (V)[0]*(SCALE), (V)[1]*(SCALE), \
-				(V)[2]*(SCALE), (V)[3]*(SCALE))
-
-#define MAT3_ADD_HVEC(RESULT_V,V1,V2) \
-	MAT3_SET_HVEC(RESULT_V, (V1)[0]+(V2)[0], (V1)[1]+(V2)[1], \
-				(V1)[2]+(V2)[2], (V1)[3]+(V2)[3])
-
-#define MAT3_SUB_HVEC(RESULT_V,V1,V2) \
-	MAT3_SET_HVEC(RESULT_V, (V1)[0]-(V2)[0], (V1)[1]-(V2)[1], \
-				(V1)[2]-(V2)[2], (V1)[3]-(V2)[3])
-
-#define MAT3_MULT_HVEC(RESULT_V,V1,V2) \
-	MAT3_SET_HVEC(RESULT_V, (V1)[0]*(V2)[0], (V1)[1]*(V2)[1], \
-				(V1)[2]*(V2)[2], (V1)[3]*(V2)[3])
-
-/* ------------------------------  Entries  ------------------------------- */
-
-
-#define MAT3identity(mat)    fgmemcpy( mat, identityMatrix, sizeof(MAT3mat) )
-#define MAT3zero(mat)        fgmemzero( mat, sizeof(MAT3mat) )
-#define MAT3copy(to, from)   fgmemcpy( to, from, sizeof(MAT3mat) )
-
-#if defined( USE_XTRA_MAT3_INLINES )
-
-#  define MAT3mult_vec( result_vec, vec, mat) { \
-   MAT3vec tempvec; \
-   tempvec[0]=vec[0]*mat[0][0]+vec[1]*mat[1][0]+vec[2]*mat[2][0]+mat[3][0]; \
-   tempvec[1]=vec[0]*mat[0][1]+vec[1]*mat[1][1]+vec[2]*mat[2][1]+mat[3][1]; \
-   tempvec[2]=vec[0]*mat[0][2]+vec[1]*mat[1][2]+vec[2]*mat[2][2]+mat[3][2]; \
-   result_vec[0] = tempvec[0]; \
-   result_vec[1] = tempvec[1]; \
-   result_vec[2] = tempvec[2]; \
-}
-
-#  define MAT3cross_product(result_vec, vec1, vec2)  { \
-   MAT3vec tempvec; \
-   tempvec[0] = vec1[1] * vec2[2] - vec1[2] * vec2[1]; \
-   tempvec[1] = vec1[2] * vec2[0] - vec1[0] * vec2[2]; \
-   tempvec[2] = vec1[0] * vec2[1] - vec1[1] * vec2[0]; \
-   result_vec[0] = tempvec[0]; \
-   result_vec[1] = tempvec[1]; \
-   result_vec[2] = tempvec[2]; \
-} 
-
-#  define MAT3mult( result_mat,  mat1,  mat2) { \
-   register int i, j; \
-   MAT3mat	tmp_mat; \
-   for (i = 0; i < 4; i++) \
-      for (j = 0; j < 4; j++) \
-         tmp_mat[i][j] = (mat1[i][0] * mat2[0][j] + \
-			  mat1[i][1] * mat2[1][j] + \
-			  mat1[i][2] * mat2[2][j] + \
-			  mat1[i][3] * mat2[3][j]); \
-   fgmemcpy(result_mat, tmp_mat, sizeof(MAT3mat)); \
-}
-
-#else // !defined( USE_XTRA_MAT3_INLINES )
-
-/* In MAT3mat.c */
-void	MAT3mult(MAT3mat result, MAT3mat, MAT3mat);
-void	MAT3mult_vec(MAT3vec result_vec, MAT3vec vec, MAT3mat mat);
-void	MAT3cross_product(MAT3vec result,MAT3vec,MAT3vec);
-
-#endif // defined( USE_XTRA_MAT3_INLINES )
-
-/* In MAT3geom.c */
-void	MAT3direction_matrix (MAT3mat result_mat, MAT3mat mat);
-int     MAT3normal_matrix (MAT3mat result_mat, MAT3mat mat);
-void	MAT3rotate (MAT3mat result_mat, MAT3vec axis, double angle_in_radians);
-void	MAT3translate (MAT3mat result_mat, MAT3vec trans);
-void	MAT3scale (MAT3mat result_mat, MAT3vec scale);
-void	MAT3shear(MAT3mat result_mat, double xshear, double yshear);
-
-void	MAT3transpose (MAT3mat result, MAT3mat);
-int	MAT3invert (MAT3mat result, MAT3mat);
-void	MAT3print (MAT3mat, FILE *fp);
-void	MAT3print_formatted (MAT3mat, FILE *fp, 
-			     char *title, char *head, char *format, char *tail);
-int	MAT3equal( void );
-double  MAT3trace( void );
-int	MAT3power( void );
-int	MAT3column_reduce( void );
-int	MAT3kernel_basis( void );
-
-/* In MAT3vec.c */
-int	MAT3mult_hvec (MAT3hvec result_vec, MAT3hvec vec, MAT3mat mat, int normalize);
-void	MAT3perp_vec(MAT3vec result_vec, MAT3vec vec, int is_unit);
-
-#ifdef __cplusplus
-}
-#endif
-
-
-#endif /* MAT3_HAS_BEEN_INCLUDED */
-

simgear/math/mat3defs.h

@@ -1,56 +0,0 @@
-/* Copyright 1988, Brown Computer Graphics Group.  All Rights Reserved. */
-
-
-#ifndef _MAT3DEFS_H
-#define _MAT3DEFS_H
-
-
-#ifdef __cplusplus                                                          
-extern "C" {                            
-#endif                                   
-
-#include <stdio.h>
-/* #include <Math/mat3err.h> */
-#include "mat3.h"
-
-/* -----------------------------  Constants  ------------------------------ */
-
-#define FALSE		0
-#define TRUE		1
-
-#define CNULL ((char *) NULL)
-
-/* ------------------------------  Macros  -------------------------------- */
-
-#define ALLOCN(P,T,N,M) \
-   if ((P = (T *) malloc((unsigned) (N) * sizeof(T))) == NULL) \
-      ERR_ERROR(MAT3_errid, ERR_FATAL, (ERR_ALLOC1, M)); \
-   else
-
-#define FREE(P)    free((char *) (P))
-
-#define ABS(A)		((A) > 0   ? (A) : -(A))
-#define MIN(A,B)	((A) < (B) ? (A) :  (B))
-#define MAX(A,B)	((A) > (B) ? (A) :  (B))
-
-#define SWAP(A,B,T)	(T = A, A = B, B = T)
-
-/* Is N within EPS of zero ? */
-#define IS_ZERO(N,EPS)	((N) < EPS && (N) > -EPS)
-
-/* Macros for lu routines */
-#define LU_PERMUTE(p,i,j)  { int LU_T; LU_T = p[i]; p[i] = p[j]; p[j] = LU_T; }
-
-/* -------------------------  Internal Entries ---------------------------- */
-
-/* -------------------------  Global Variables ---------------------------- */
-
-/* extern ERRid	*MAT3_errid; */
-
-
-#ifdef __cplusplus
-}
-#endif
-
-
-#endif /* _MAT3DEFS_H */

simgear/math/mat3err.h

@@ -1,41 +0,0 @@
-#ifndef _MAT3ERR_H
-#define _MAT3ERR_H
-
-
-#ifdef __cplusplus                                                          
-extern "C" {                            
-#endif                                   
-
-
-#include "sph_errtypes.h"
-
-#ifdef THINK_C
-/* We hide this from gnu's compiler, which doesn't understand it. */
-void SPH__error (int errtype, ...);
-#endif
-
-
-#define ERR_ERROR(A,B,C)   \
-   if (1) {char cstr[256]; sprintf C; SPH__error(ERR_MAT3_PACKAGE, cstr); } else
-
-
-#define ERR_S  cstr,"%s\n"
-#define ERR_SI cstr,"%s: %d\n"
-#define ERR_SS cstr,"%s: %s\n"
-
-#define ERR_SEVERE 0
-#define ERR_FATAL  0
-
-#define ERR_ALLOC1 0
-
-typedef int ERRid;
-
-#define ERRregister_package(S)    100
-
-
-#ifdef __cplusplus
-}
-#endif
-
-
-#endif /* _MAT3ERR_H */