new version: 2018.2.0

Don’t discard the existing data when expiring from the cache, in case
the refresh request fails.

.gitignore

@@ -14,3 +14,4 @@ CTestTestfile.cmake
 install_manifest.txt
 build*
 Build
+CMakeLists.txt.user

3rdparty/CMakeLists.txt

@@ -2,8 +2,6 @@ if (NOT SYSTEM_EXPAT)
 	add_subdirectory(expat)
 endif()
 
-add_subdirectory(utf8)
-
-if (ENABLE_DNS)
+if (ENABLE_DNS AND NOT SYSTEM_UDNS)
 	add_subdirectory(udns)
 endif()

3rdparty/udns/udns.h

@@ -45,6 +45,7 @@
 #endif
 
 #include <sys/types.h>		/* for time_t */
+#include <time.h>
 
 #ifdef __cplusplus
 extern "C" {

3rdparty/utf8/CMakeLists.txt

@@ -1,17 +0,0 @@
-include (SimGearComponent)
-
-set(HEADERS
-  source/utf8.h
-)
-
-set(HEADERS_utf8
-  source/utf8/checked.h
-  source/utf8/core.h
-  source/utf8/unchecked.h
-)
-
-set(SOURCES
-)
-
-simgear_component(utf8 3rdparty/utf8 "${SOURCES}" "${HEADERS}")
-simgear_component(utf8-internal 3rdparty/utf8/utf8 "" "${HEADERS_utf8}")

3rdparty/utf8/doc/ReleaseNotes

@@ -1,12 +0,0 @@
-utf8 cpp library
-Release 2.3.4
-
-A minor bug fix release. Thanks to all who reported bugs. 
-
-Note: Version 2.3.3 contained a regression, and therefore was removed.
-
-Changes from version 2.3.2
-- Bug fix [39]: checked.h Line 273 and unchecked.h Line 182 have an extra ';'
-- Bug fix [36]: replace_invalid() only works with back_inserter
-
-Files included in the release: utf8.h, core.h, checked.h, unchecked.h, utf8cpp.html, ReleaseNotes

3rdparty/utf8/source/utf8.h

@@ -1,34 +0,0 @@
-// Copyright 2006 Nemanja Trifunovic
-
-/*
-Permission is hereby granted, free of charge, to any person or organization
-obtaining a copy of the software and accompanying documentation covered by
-this license (the "Software") to use, reproduce, display, distribute,
-execute, and transmit the Software, and to prepare derivative works of the
-Software, and to permit third-parties to whom the Software is furnished to
-do so, all subject to the following:
-
-The copyright notices in the Software and this entire statement, including
-the above license grant, this restriction and the following disclaimer,
-must be included in all copies of the Software, in whole or in part, and
-all derivative works of the Software, unless such copies or derivative
-works are solely in the form of machine-executable object code generated by
-a source language processor.
-
-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, TITLE AND NON-INFRINGEMENT. IN NO EVENT
-SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
-FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
-*/
-
-
-#ifndef UTF8_FOR_CPP_2675DCD0_9480_4c0c_B92A_CC14C027B731
-#define UTF8_FOR_CPP_2675DCD0_9480_4c0c_B92A_CC14C027B731
-
-#include "utf8/checked.h"
-#include "utf8/unchecked.h"
-
-#endif // header guard

3rdparty/utf8/source/utf8/checked.h

@@ -1,327 +0,0 @@
-// Copyright 2006 Nemanja Trifunovic
-
-/*
-Permission is hereby granted, free of charge, to any person or organization
-obtaining a copy of the software and accompanying documentation covered by
-this license (the "Software") to use, reproduce, display, distribute,
-execute, and transmit the Software, and to prepare derivative works of the
-Software, and to permit third-parties to whom the Software is furnished to
-do so, all subject to the following:
-
-The copyright notices in the Software and this entire statement, including
-the above license grant, this restriction and the following disclaimer,
-must be included in all copies of the Software, in whole or in part, and
-all derivative works of the Software, unless such copies or derivative
-works are solely in the form of machine-executable object code generated by
-a source language processor.
-
-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, TITLE AND NON-INFRINGEMENT. IN NO EVENT
-SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
-FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
-*/
-
-
-#ifndef UTF8_FOR_CPP_CHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-#define UTF8_FOR_CPP_CHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-
-#include "core.h"
-#include <stdexcept>
-
-namespace utf8
-{
-    // Base for the exceptions that may be thrown from the library
-    class exception : public ::std::exception {
-    };
-
-    // Exceptions that may be thrown from the library functions.
-    class invalid_code_point : public exception {
-        uint32_t cp;
-    public:
-        invalid_code_point(uint32_t cp) : cp(cp) {}
-        virtual const char* what() const throw() { return "Invalid code point"; }
-        uint32_t code_point() const {return cp;}
-    };
-
-    class invalid_utf8 : public exception {
-        uint8_t u8;
-    public:
-        invalid_utf8 (uint8_t u) : u8(u) {}
-        virtual const char* what() const throw() { return "Invalid UTF-8"; }
-        uint8_t utf8_octet() const {return u8;}
-    };
-
-    class invalid_utf16 : public exception {
-        uint16_t u16;
-    public:
-        invalid_utf16 (uint16_t u) : u16(u) {}
-        virtual const char* what() const throw() { return "Invalid UTF-16"; }
-        uint16_t utf16_word() const {return u16;}
-    };
-
-    class not_enough_room : public exception {
-    public:
-        virtual const char* what() const throw() { return "Not enough space"; }
-    };
-
-    /// The library API - functions intended to be called by the users
-
-    template <typename octet_iterator>
-    octet_iterator append(uint32_t cp, octet_iterator result)
-    {
-        if (!utf8::internal::is_code_point_valid(cp))
-            throw invalid_code_point(cp);
-
-        if (cp < 0x80)                        // one octet
-            *(result++) = static_cast<uint8_t>(cp);
-        else if (cp < 0x800) {                // two octets
-            *(result++) = static_cast<uint8_t>((cp >> 6)            | 0xc0);
-            *(result++) = static_cast<uint8_t>((cp & 0x3f)          | 0x80);
-        }
-        else if (cp < 0x10000) {              // three octets
-            *(result++) = static_cast<uint8_t>((cp >> 12)           | 0xe0);
-            *(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f)   | 0x80);
-            *(result++) = static_cast<uint8_t>((cp & 0x3f)          | 0x80);
-        }
-        else {                                // four octets
-            *(result++) = static_cast<uint8_t>((cp >> 18)           | 0xf0);
-            *(result++) = static_cast<uint8_t>(((cp >> 12) & 0x3f)  | 0x80);
-            *(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f)   | 0x80);
-            *(result++) = static_cast<uint8_t>((cp & 0x3f)          | 0x80);
-        }
-        return result;
-    }
-
-    template <typename octet_iterator, typename output_iterator>
-    output_iterator replace_invalid(octet_iterator start, octet_iterator end, output_iterator out, uint32_t replacement)
-    {
-        while (start != end) {
-            octet_iterator sequence_start = start;
-            internal::utf_error err_code = utf8::internal::validate_next(start, end);
-            switch (err_code) {
-                case internal::UTF8_OK :
-                    for (octet_iterator it = sequence_start; it != start; ++it)
-                        *out++ = *it;
-                    break;
-                case internal::NOT_ENOUGH_ROOM:
-                    throw not_enough_room();
-                case internal::INVALID_LEAD:
-                    out = utf8::append (replacement, out);
-                    ++start;
-                    break;
-                case internal::INCOMPLETE_SEQUENCE:
-                case internal::OVERLONG_SEQUENCE:
-                case internal::INVALID_CODE_POINT:
-                    out = utf8::append (replacement, out);
-                    ++start;
-                    // just one replacement mark for the sequence
-                    while (start != end && utf8::internal::is_trail(*start))
-                        ++start;
-                    break;
-            }
-        }
-        return out;
-    }
-
-    template <typename octet_iterator, typename output_iterator>
-    inline output_iterator replace_invalid(octet_iterator start, octet_iterator end, output_iterator out)
-    {
-        static const uint32_t replacement_marker = utf8::internal::mask16(0xfffd);
-        return utf8::replace_invalid(start, end, out, replacement_marker);
-    }
-
-    template <typename octet_iterator>
-    uint32_t next(octet_iterator& it, octet_iterator end)
-    {
-        uint32_t cp = 0;
-        internal::utf_error err_code = utf8::internal::validate_next(it, end, cp);
-        switch (err_code) {
-            case internal::UTF8_OK :
-                break;
-            case internal::NOT_ENOUGH_ROOM :
-                throw not_enough_room();
-            case internal::INVALID_LEAD :
-            case internal::INCOMPLETE_SEQUENCE :
-            case internal::OVERLONG_SEQUENCE :
-                throw invalid_utf8(*it);
-            case internal::INVALID_CODE_POINT :
-                throw invalid_code_point(cp);
-        }
-        return cp;
-    }
-
-    template <typename octet_iterator>
-    uint32_t peek_next(octet_iterator it, octet_iterator end)
-    {
-        return utf8::next(it, end);
-    }
-
-    template <typename octet_iterator>
-    uint32_t prior(octet_iterator& it, octet_iterator start)
-    {
-        // can't do much if it == start
-        if (it == start)
-            throw not_enough_room();
-
-        octet_iterator end = it;
-        // Go back until we hit either a lead octet or start
-        while (utf8::internal::is_trail(*(--it)))
-            if (it == start)
-                throw invalid_utf8(*it); // error - no lead byte in the sequence
-        return utf8::peek_next(it, end);
-    }
-
-    /// Deprecated in versions that include "prior"
-    template <typename octet_iterator>
-    uint32_t previous(octet_iterator& it, octet_iterator pass_start)
-    {
-        octet_iterator end = it;
-        while (utf8::internal::is_trail(*(--it)))
-            if (it == pass_start)
-                throw invalid_utf8(*it); // error - no lead byte in the sequence
-        octet_iterator temp = it;
-        return utf8::next(temp, end);
-    }
-
-    template <typename octet_iterator, typename distance_type>
-    void advance (octet_iterator& it, distance_type n, octet_iterator end)
-    {
-        for (distance_type i = 0; i < n; ++i)
-            utf8::next(it, end);
-    }
-
-    template <typename octet_iterator>
-    typename std::iterator_traits<octet_iterator>::difference_type
-    distance (octet_iterator first, octet_iterator last)
-    {
-        typename std::iterator_traits<octet_iterator>::difference_type dist;
-        for (dist = 0; first < last; ++dist)
-            utf8::next(first, last);
-        return dist;
-    }
-
-    template <typename u16bit_iterator, typename octet_iterator>
-    octet_iterator utf16to8 (u16bit_iterator start, u16bit_iterator end, octet_iterator result)
-    {
-        while (start != end) {
-            uint32_t cp = utf8::internal::mask16(*start++);
-            // Take care of surrogate pairs first
-            if (utf8::internal::is_lead_surrogate(cp)) {
-                if (start != end) {
-                    uint32_t trail_surrogate = utf8::internal::mask16(*start++);
-                    if (utf8::internal::is_trail_surrogate(trail_surrogate))
-                        cp = (cp << 10) + trail_surrogate + internal::SURROGATE_OFFSET;
-                    else
-                        throw invalid_utf16(static_cast<uint16_t>(trail_surrogate));
-                }
-                else
-                    throw invalid_utf16(static_cast<uint16_t>(cp));
-
-            }
-            // Lone trail surrogate
-            else if (utf8::internal::is_trail_surrogate(cp))
-                throw invalid_utf16(static_cast<uint16_t>(cp));
-
-            result = utf8::append(cp, result);
-        }
-        return result;
-    }
-
-    template <typename u16bit_iterator, typename octet_iterator>
-    u16bit_iterator utf8to16 (octet_iterator start, octet_iterator end, u16bit_iterator result)
-    {
-        while (start != end) {
-            uint32_t cp = utf8::next(start, end);
-            if (cp > 0xffff) { //make a surrogate pair
-                *result++ = static_cast<uint16_t>((cp >> 10)   + internal::LEAD_OFFSET);
-                *result++ = static_cast<uint16_t>((cp & 0x3ff) + internal::TRAIL_SURROGATE_MIN);
-            }
-            else
-                *result++ = static_cast<uint16_t>(cp);
-        }
-        return result;
-    }
-
-    template <typename octet_iterator, typename u32bit_iterator>
-    octet_iterator utf32to8 (u32bit_iterator start, u32bit_iterator end, octet_iterator result)
-    {
-        while (start != end)
-            result = utf8::append(*(start++), result);
-
-        return result;
-    }
-
-    template <typename octet_iterator, typename u32bit_iterator>
-    u32bit_iterator utf8to32 (octet_iterator start, octet_iterator end, u32bit_iterator result)
-    {
-        while (start != end)
-            (*result++) = utf8::next(start, end);
-
-        return result;
-    }
-
-    // The iterator class
-    template <typename octet_iterator>
-    class iterator : public std::iterator <std::bidirectional_iterator_tag, uint32_t> {
-      octet_iterator it;
-      octet_iterator range_start;
-      octet_iterator range_end;
-      public:
-      iterator () {}
-      explicit iterator (const octet_iterator& octet_it,
-                         const octet_iterator& range_start,
-                         const octet_iterator& range_end) :
-               it(octet_it), range_start(range_start), range_end(range_end)
-      {
-          if (it < range_start || it > range_end)
-              throw std::out_of_range("Invalid utf-8 iterator position");
-      }
-      // the default "big three" are OK
-      octet_iterator base () const { return it; }
-      uint32_t operator * () const
-      {
-          octet_iterator temp = it;
-          return utf8::next(temp, range_end);
-      }
-      bool operator == (const iterator& rhs) const
-      {
-          if (range_start != rhs.range_start || range_end != rhs.range_end)
-              throw std::logic_error("Comparing utf-8 iterators defined with different ranges");
-          return (it == rhs.it);
-      }
-      bool operator != (const iterator& rhs) const
-      {
-          return !(operator == (rhs));
-      }
-      iterator& operator ++ ()
-      {
-          utf8::next(it, range_end);
-          return *this;
-      }
-      iterator operator ++ (int)
-      {
-          iterator temp = *this;
-          utf8::next(it, range_end);
-          return temp;
-      }
-      iterator& operator -- ()
-      {
-          utf8::prior(it, range_start);
-          return *this;
-      }
-      iterator operator -- (int)
-      {
-          iterator temp = *this;
-          utf8::prior(it, range_start);
-          return temp;
-      }
-    }; // class iterator
-
-} // namespace utf8
-
-#endif //header guard
-
-

3rdparty/utf8/source/utf8/core.h

@@ -1,329 +0,0 @@
-// Copyright 2006 Nemanja Trifunovic
-
-/*
-Permission is hereby granted, free of charge, to any person or organization
-obtaining a copy of the software and accompanying documentation covered by
-this license (the "Software") to use, reproduce, display, distribute,
-execute, and transmit the Software, and to prepare derivative works of the
-Software, and to permit third-parties to whom the Software is furnished to
-do so, all subject to the following:
-
-The copyright notices in the Software and this entire statement, including
-the above license grant, this restriction and the following disclaimer,
-must be included in all copies of the Software, in whole or in part, and
-all derivative works of the Software, unless such copies or derivative
-works are solely in the form of machine-executable object code generated by
-a source language processor.
-
-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, TITLE AND NON-INFRINGEMENT. IN NO EVENT
-SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
-FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
-*/
-
-
-#ifndef UTF8_FOR_CPP_CORE_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-#define UTF8_FOR_CPP_CORE_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-
-#include <iterator>
-
-namespace utf8
-{
-    // The typedefs for 8-bit, 16-bit and 32-bit unsigned integers
-    // You may need to change them to match your system.
-    // These typedefs have the same names as ones from cstdint, or boost/cstdint
-    typedef unsigned char   uint8_t;
-    typedef unsigned short  uint16_t;
-    typedef unsigned int    uint32_t;
-
-// Helper code - not intended to be directly called by the library users. May be changed at any time
-namespace internal
-{
-    // Unicode constants
-    // Leading (high) surrogates: 0xd800 - 0xdbff
-    // Trailing (low) surrogates: 0xdc00 - 0xdfff
-    const uint16_t LEAD_SURROGATE_MIN  = 0xd800u;
-    const uint16_t LEAD_SURROGATE_MAX  = 0xdbffu;
-    const uint16_t TRAIL_SURROGATE_MIN = 0xdc00u;
-    const uint16_t TRAIL_SURROGATE_MAX = 0xdfffu;
-    const uint16_t LEAD_OFFSET         = LEAD_SURROGATE_MIN - (0x10000 >> 10);
-    const uint32_t SURROGATE_OFFSET    = 0x10000u - (LEAD_SURROGATE_MIN << 10) - TRAIL_SURROGATE_MIN;
-
-    // Maximum valid value for a Unicode code point
-    const uint32_t CODE_POINT_MAX      = 0x0010ffffu;
-
-    template<typename octet_type>
-    inline uint8_t mask8(octet_type oc)
-    {
-        return static_cast<uint8_t>(0xff & oc);
-    }
-    template<typename u16_type>
-    inline uint16_t mask16(u16_type oc)
-    {
-        return static_cast<uint16_t>(0xffff & oc);
-    }
-    template<typename octet_type>
-    inline bool is_trail(octet_type oc)
-    {
-        return ((utf8::internal::mask8(oc) >> 6) == 0x2);
-    }
-
-    template <typename u16>
-    inline bool is_lead_surrogate(u16 cp)
-    {
-        return (cp >= LEAD_SURROGATE_MIN && cp <= LEAD_SURROGATE_MAX);
-    }
-
-    template <typename u16>
-    inline bool is_trail_surrogate(u16 cp)
-    {
-        return (cp >= TRAIL_SURROGATE_MIN && cp <= TRAIL_SURROGATE_MAX);
-    }
-
-    template <typename u16>
-    inline bool is_surrogate(u16 cp)
-    {
-        return (cp >= LEAD_SURROGATE_MIN && cp <= TRAIL_SURROGATE_MAX);
-    }
-
-    template <typename u32>
-    inline bool is_code_point_valid(u32 cp)
-    {
-        return (cp <= CODE_POINT_MAX && !utf8::internal::is_surrogate(cp));
-    }
-
-    template <typename octet_iterator>
-    inline typename std::iterator_traits<octet_iterator>::difference_type
-    sequence_length(octet_iterator lead_it)
-    {
-        uint8_t lead = utf8::internal::mask8(*lead_it);
-        if (lead < 0x80)
-            return 1;
-        else if ((lead >> 5) == 0x6)
-            return 2;
-        else if ((lead >> 4) == 0xe)
-            return 3;
-        else if ((lead >> 3) == 0x1e)
-            return 4;
-        else
-            return 0;
-    }
-
-    template <typename octet_difference_type>
-    inline bool is_overlong_sequence(uint32_t cp, octet_difference_type length)
-    {
-        if (cp < 0x80) {
-            if (length != 1) 
-                return true;
-        }
-        else if (cp < 0x800) {
-            if (length != 2) 
-                return true;
-        }
-        else if (cp < 0x10000) {
-            if (length != 3) 
-                return true;
-        }
-
-        return false;
-    }
-
-    enum utf_error {UTF8_OK, NOT_ENOUGH_ROOM, INVALID_LEAD, INCOMPLETE_SEQUENCE, OVERLONG_SEQUENCE, INVALID_CODE_POINT};
-
-    /// Helper for get_sequence_x
-    template <typename octet_iterator>
-    utf_error increase_safely(octet_iterator& it, octet_iterator end)
-    {
-        if (++it == end)
-            return NOT_ENOUGH_ROOM;
-
-        if (!utf8::internal::is_trail(*it))
-            return INCOMPLETE_SEQUENCE;
-        
-        return UTF8_OK;
-    }
-
-    #define UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(IT, END) {utf_error ret = increase_safely(IT, END); if (ret != UTF8_OK) return ret;}    
-
-    /// get_sequence_x functions decode utf-8 sequences of the length x
-    template <typename octet_iterator>
-    utf_error get_sequence_1(octet_iterator& it, octet_iterator end, uint32_t& code_point)
-    {
-        if (it == end)
-            return NOT_ENOUGH_ROOM;
-
-        code_point = utf8::internal::mask8(*it);
-
-        return UTF8_OK;
-    }
-
-    template <typename octet_iterator>
-    utf_error get_sequence_2(octet_iterator& it, octet_iterator end, uint32_t& code_point)
-    {
-        if (it == end) 
-            return NOT_ENOUGH_ROOM;
-        
-        code_point = utf8::internal::mask8(*it);
-
-        UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
-        code_point = ((code_point << 6) & 0x7ff) + ((*it) & 0x3f);
-
-        return UTF8_OK;
-    }
-
-    template <typename octet_iterator>
-    utf_error get_sequence_3(octet_iterator& it, octet_iterator end, uint32_t& code_point)
-    {
-        if (it == end)
-            return NOT_ENOUGH_ROOM;
-            
-        code_point = utf8::internal::mask8(*it);
-
-        UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
-        code_point = ((code_point << 12) & 0xffff) + ((utf8::internal::mask8(*it) << 6) & 0xfff);
-
-        UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
-        code_point += (*it) & 0x3f;
-
-        return UTF8_OK;
-    }
-
-    template <typename octet_iterator>
-    utf_error get_sequence_4(octet_iterator& it, octet_iterator end, uint32_t& code_point)
-    {
-        if (it == end)
-           return NOT_ENOUGH_ROOM;
-
-        code_point = utf8::internal::mask8(*it);
-
-        UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
-        code_point = ((code_point << 18) & 0x1fffff) + ((utf8::internal::mask8(*it) << 12) & 0x3ffff);
-
-        UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
-        code_point += (utf8::internal::mask8(*it) << 6) & 0xfff;
-
-        UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR(it, end)
-
-        code_point += (*it) & 0x3f;
-
-        return UTF8_OK;
-    }
-
-    #undef UTF8_CPP_INCREASE_AND_RETURN_ON_ERROR
-
-    template <typename octet_iterator>
-    utf_error validate_next(octet_iterator& it, octet_iterator end, uint32_t& code_point)
-    {
-        // Save the original value of it so we can go back in case of failure
-        // Of course, it does not make much sense with i.e. stream iterators
-        octet_iterator original_it = it;
-
-        uint32_t cp = 0;
-        // Determine the sequence length based on the lead octet
-        typedef typename std::iterator_traits<octet_iterator>::difference_type octet_difference_type;
-        const octet_difference_type length = utf8::internal::sequence_length(it);
-
-        // Get trail octets and calculate the code point
-        utf_error err = UTF8_OK;
-        switch (length) {
-            case 0: 
-                return INVALID_LEAD;
-            case 1:
-                err = utf8::internal::get_sequence_1(it, end, cp);
-                break;
-            case 2:
-                err = utf8::internal::get_sequence_2(it, end, cp);
-            break;
-            case 3:
-                err = utf8::internal::get_sequence_3(it, end, cp);
-            break;
-            case 4:
-                err = utf8::internal::get_sequence_4(it, end, cp);
-            break;
-        }
-
-        if (err == UTF8_OK) {
-            // Decoding succeeded. Now, security checks...
-            if (utf8::internal::is_code_point_valid(cp)) {
-                if (!utf8::internal::is_overlong_sequence(cp, length)){
-                    // Passed! Return here.
-                    code_point = cp;
-                    ++it;
-                    return UTF8_OK;
-                }
-                else
-                    err = OVERLONG_SEQUENCE;
-            }
-            else 
-                err = INVALID_CODE_POINT;
-        }
-
-        // Failure branch - restore the original value of the iterator
-        it = original_it;
-        return err;
-    }
-
-    template <typename octet_iterator>
-    inline utf_error validate_next(octet_iterator& it, octet_iterator end) {
-        uint32_t ignored;
-        return utf8::internal::validate_next(it, end, ignored);
-    }
-
-} // namespace internal
-
-    /// The library API - functions intended to be called by the users
-
-    // Byte order mark
-    const uint8_t bom[] = {0xef, 0xbb, 0xbf};
-
-    template <typename octet_iterator>
-    octet_iterator find_invalid(octet_iterator start, octet_iterator end)
-    {
-        octet_iterator result = start;
-        while (result != end) {
-            utf8::internal::utf_error err_code = utf8::internal::validate_next(result, end);
-            if (err_code != internal::UTF8_OK)
-                return result;
-        }
-        return result;
-    }
-
-    template <typename octet_iterator>
-    inline bool is_valid(octet_iterator start, octet_iterator end)
-    {
-        return (utf8::find_invalid(start, end) == end);
-    }
-
-    template <typename octet_iterator>
-    inline bool starts_with_bom (octet_iterator it, octet_iterator end)
-    {
-        return (
-            ((it != end) && (utf8::internal::mask8(*it++)) == bom[0]) &&
-            ((it != end) && (utf8::internal::mask8(*it++)) == bom[1]) &&
-            ((it != end) && (utf8::internal::mask8(*it))   == bom[2])
-           );
-    }
-	
-    //Deprecated in release 2.3 
-    template <typename octet_iterator>
-    inline bool is_bom (octet_iterator it)
-    {
-        return (
-            (utf8::internal::mask8(*it++)) == bom[0] &&
-            (utf8::internal::mask8(*it++)) == bom[1] &&
-            (utf8::internal::mask8(*it))   == bom[2]
-           );
-    }
-} // namespace utf8
-
-#endif // header guard
-
-

3rdparty/utf8/source/utf8/unchecked.h

@@ -1,228 +0,0 @@
-// Copyright 2006 Nemanja Trifunovic
-
-/*
-Permission is hereby granted, free of charge, to any person or organization
-obtaining a copy of the software and accompanying documentation covered by
-this license (the "Software") to use, reproduce, display, distribute,
-execute, and transmit the Software, and to prepare derivative works of the
-Software, and to permit third-parties to whom the Software is furnished to
-do so, all subject to the following:
-
-The copyright notices in the Software and this entire statement, including
-the above license grant, this restriction and the following disclaimer,
-must be included in all copies of the Software, in whole or in part, and
-all derivative works of the Software, unless such copies or derivative
-works are solely in the form of machine-executable object code generated by
-a source language processor.
-
-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, TITLE AND NON-INFRINGEMENT. IN NO EVENT
-SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
-FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
-ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-DEALINGS IN THE SOFTWARE.
-*/
-
-
-#ifndef UTF8_FOR_CPP_UNCHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-#define UTF8_FOR_CPP_UNCHECKED_H_2675DCD0_9480_4c0c_B92A_CC14C027B731
-
-#include "core.h"
-
-namespace utf8
-{
-    namespace unchecked 
-    {
-        template <typename octet_iterator>
-        octet_iterator append(uint32_t cp, octet_iterator result)
-        {
-            if (cp < 0x80)                        // one octet
-                *(result++) = static_cast<uint8_t>(cp);  
-            else if (cp < 0x800) {                // two octets
-                *(result++) = static_cast<uint8_t>((cp >> 6)          | 0xc0);
-                *(result++) = static_cast<uint8_t>((cp & 0x3f)        | 0x80);
-            }
-            else if (cp < 0x10000) {              // three octets
-                *(result++) = static_cast<uint8_t>((cp >> 12)         | 0xe0);
-                *(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
-                *(result++) = static_cast<uint8_t>((cp & 0x3f)        | 0x80);
-            }
-            else {                                // four octets
-                *(result++) = static_cast<uint8_t>((cp >> 18)         | 0xf0);
-                *(result++) = static_cast<uint8_t>(((cp >> 12) & 0x3f)| 0x80);
-                *(result++) = static_cast<uint8_t>(((cp >> 6) & 0x3f) | 0x80);
-                *(result++) = static_cast<uint8_t>((cp & 0x3f)        | 0x80);
-            }
-            return result;
-        }
-
-        template <typename octet_iterator>
-        uint32_t next(octet_iterator& it)
-        {
-            uint32_t cp = utf8::internal::mask8(*it);
-            typename std::iterator_traits<octet_iterator>::difference_type length = utf8::internal::sequence_length(it);
-            switch (length) {
-                case 1:
-                    break;
-                case 2:
-                    it++;
-                    cp = ((cp << 6) & 0x7ff) + ((*it) & 0x3f);
-                    break;
-                case 3:
-                    ++it; 
-                    cp = ((cp << 12) & 0xffff) + ((utf8::internal::mask8(*it) << 6) & 0xfff);
-                    ++it;
-                    cp += (*it) & 0x3f;
-                    break;
-                case 4:
-                    ++it;
-                    cp = ((cp << 18) & 0x1fffff) + ((utf8::internal::mask8(*it) << 12) & 0x3ffff);                
-                    ++it;
-                    cp += (utf8::internal::mask8(*it) << 6) & 0xfff;
-                    ++it;
-                    cp += (*it) & 0x3f; 
-                    break;
-            }
-            ++it;
-            return cp;        
-        }
-
-        template <typename octet_iterator>
-        uint32_t peek_next(octet_iterator it)
-        {
-            return utf8::unchecked::next(it);    
-        }
-
-        template <typename octet_iterator>
-        uint32_t prior(octet_iterator& it)
-        {
-            while (utf8::internal::is_trail(*(--it))) ;
-            octet_iterator temp = it;
-            return utf8::unchecked::next(temp);
-        }
-
-        // Deprecated in versions that include prior, but only for the sake of consistency (see utf8::previous)
-        template <typename octet_iterator>
-        inline uint32_t previous(octet_iterator& it)
-        {
-            return utf8::unchecked::prior(it);
-        }
-
-        template <typename octet_iterator, typename distance_type>
-        void advance (octet_iterator& it, distance_type n)
-        {
-            for (distance_type i = 0; i < n; ++i)
-                utf8::unchecked::next(it);
-        }
-
-        template <typename octet_iterator>
-        typename std::iterator_traits<octet_iterator>::difference_type
-        distance (octet_iterator first, octet_iterator last)
-        {
-            typename std::iterator_traits<octet_iterator>::difference_type dist;
-            for (dist = 0; first < last; ++dist) 
-                utf8::unchecked::next(first);
-            return dist;
-        }
-
-        template <typename u16bit_iterator, typename octet_iterator>
-        octet_iterator utf16to8 (u16bit_iterator start, u16bit_iterator end, octet_iterator result)
-        {       
-            while (start != end) {
-                uint32_t cp = utf8::internal::mask16(*start++);
-            // Take care of surrogate pairs first
-                if (utf8::internal::is_lead_surrogate(cp)) {
-                    uint32_t trail_surrogate = utf8::internal::mask16(*start++);
-                    cp = (cp << 10) + trail_surrogate + internal::SURROGATE_OFFSET;
-                }
-                result = utf8::unchecked::append(cp, result);
-            }
-            return result;         
-        }
-
-        template <typename u16bit_iterator, typename octet_iterator>
-        u16bit_iterator utf8to16 (octet_iterator start, octet_iterator end, u16bit_iterator result)
-        {
-            while (start < end) {
-                uint32_t cp = utf8::unchecked::next(start);
-                if (cp > 0xffff) { //make a surrogate pair
-                    *result++ = static_cast<uint16_t>((cp >> 10)   + internal::LEAD_OFFSET);
-                    *result++ = static_cast<uint16_t>((cp & 0x3ff) + internal::TRAIL_SURROGATE_MIN);
-                }
-                else
-                    *result++ = static_cast<uint16_t>(cp);
-            }
-            return result;
-        }
-
-        template <typename octet_iterator, typename u32bit_iterator>
-        octet_iterator utf32to8 (u32bit_iterator start, u32bit_iterator end, octet_iterator result)
-        {
-            while (start != end)
-                result = utf8::unchecked::append(*(start++), result);
-
-            return result;
-        }
-
-        template <typename octet_iterator, typename u32bit_iterator>
-        u32bit_iterator utf8to32 (octet_iterator start, octet_iterator end, u32bit_iterator result)
-        {
-            while (start < end)
-                (*result++) = utf8::unchecked::next(start);
-
-            return result;
-        }
-
-        // The iterator class
-        template <typename octet_iterator>
-          class iterator : public std::iterator <std::bidirectional_iterator_tag, uint32_t> { 
-            octet_iterator it;
-            public:
-            iterator () {}
-            explicit iterator (const octet_iterator& octet_it): it(octet_it) {}
-            // the default "big three" are OK
-            octet_iterator base () const { return it; }
-            uint32_t operator * () const
-            {
-                octet_iterator temp = it;
-                return utf8::unchecked::next(temp);
-            }
-            bool operator == (const iterator& rhs) const 
-            { 
-                return (it == rhs.it);
-            }
-            bool operator != (const iterator& rhs) const
-            {
-                return !(operator == (rhs));
-            }
-            iterator& operator ++ () 
-            {
-                ::std::advance(it, utf8::internal::sequence_length(it));
-                return *this;
-            }
-            iterator operator ++ (int)
-            {
-                iterator temp = *this;
-                ::std::advance(it, utf8::internal::sequence_length(it));
-                return temp;
-            }  
-            iterator& operator -- ()
-            {
-                utf8::unchecked::prior(it);
-                return *this;
-            }
-            iterator operator -- (int)
-            {
-                iterator temp = *this;
-                utf8::unchecked::prior(it);
-                return temp;
-            }
-          }; // class iterator
-
-    } // namespace utf8::unchecked
-} // namespace utf8 
-
-
-#endif // header guard
-

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required (VERSION 2.8.11)
+cmake_minimum_required (VERSION 3.0)
 
 if(COMMAND cmake_policy)
    if(POLICY CMP0054)
@@ -7,6 +7,20 @@ if(COMMAND cmake_policy)
    if(POLICY CMP0042)
        cmake_policy(SET CMP0042 NEW)
    endif()
+   if(POLICY CMP0067)
+       cmake_policy(SET CMP0067 NEW)
+   endif()
+endif()
+
+
+message(STATUS "CMAKE Build type: ${CMAKE_BUILD_TYPE}")
+# Set a default build type if none was specified
+if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
+  message(STATUS "Setting build type to 'Debug' as none was specified.")
+  set(CMAKE_BUILD_TYPE Debug CACHE STRING "Choose the type of build." FORCE)
+  # Set the possible values of build type for cmake-gui
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release"
+    "MinSizeRel" "RelWithDebInfo")
 endif()
 
 include (CheckFunctionExists)
@@ -16,19 +30,29 @@ include (CheckCXXSourceCompiles)
 include (CheckCXXCompilerFlag)
 include (GenerateExportHeader)
 
-# using 10.7 because boost requires libc++ and 10.6 doesn't include it
-set(CMAKE_OSX_DEPLOYMENT_TARGET 10.7)
-
 # only relevant for building shared libs but let's set it regardless
 set(CMAKE_OSX_RPATH 1)
 
-project(SimGear)
+# let's use & require C++11 - note these are only functional with CMake 3.1
+# we do manual fallbacks for CMake 3.0 in the compilers section
+set(CMAKE_CXX_STANDARD 11)
+set(CMAKE_CXX_STANDARD_REQUIRED YES)
 
 # read 'version' file into a variable (stripping any newlines or spaces)
 file(READ version versionFile)
 string(STRIP ${versionFile} SIMGEAR_VERSION)
 
-set(FIND_LIBRARY_USE_LIB64_PATHS ON)
+project(SimGear VERSION ${SIMGEAR_VERSION} LANGUAGES C CXX)
+
+# using 10.7 because boost requires libc++ and 10.6 doesn't include it
+# Cmake documentation says we must set this before calling project(), but
+# it only seems to be picked up setting it /after/ the call to project()
+set(CMAKE_OSX_DEPLOYMENT_TARGET "10.7")
+
+# add a dependency on the versino file
+set_property(DIRECTORY APPEND PROPERTY CMAKE_CONFIGURE_DEPENDS version)
+
+set_property(GLOBAL PROPERTY FIND_LIBRARY_USE_LIB64_PATHS TRUE)
 
 # use simgear version also as the SO version (if building SOs)
 SET(SIMGEAR_SOVERSION ${SIMGEAR_VERSION})
@@ -63,8 +87,6 @@ set(CPACK_SOURCE_PACKAGE_FILE_NAME "simgear-${SIMGEAR_VERSION}" CACHE INTERNAL "
 set(CPACK_SOURCE_IGNORE_FILES
   "^${PROJECT_SOURCE_DIR}/.git;\\\\.gitignore;Makefile.am;~$;${CPACK_SOURCE_IGNORE_FILES}")
 
-message(STATUS "ignoring: ${CPACK_SOURCE_IGNORE_FILES}")
-
 include (CPack)
 
 # We have some custom .cmake scripts not in the official distribution.
@@ -87,37 +109,44 @@ message(STATUS "Library installation directory: ${CMAKE_INSTALL_LIBDIR}")
 # Configure library search paths
 #####################################################################################
 
-if(NOT "${CMAKE_LIBRARY_ARCHITECTURE}" STREQUAL "")
-    # Workaround for Ubuntu/Debian which introduced the "multiarch" library
-    # directory structure, which is unsupported by CMake < 2.8.10, so we need to
-    # add paths manually
-    # see http://www.cmake.org/Bug/view.php?id=12049 and
-    # http://www.cmake.org/Bug/view.php?id=12037
-    list(APPEND ADDITIONAL_LIBRARY_PATHS
-         /usr/local/lib/${CMAKE_LIBRARY_ARCHITECTURE}
-         /usr/lib/${CMAKE_LIBRARY_ARCHITECTURE}
-         /lib/${CMAKE_LIBRARY_ARCHITECTURE})
-    message(STATUS "additional library directories: ${ADDITIONAL_LIBRARY_PATHS}")
-endif()
-
-#####################################################################################
-
 if (NOT MSVC)
 option(SIMGEAR_SHARED   "Set to ON to build SimGear as a shared library/framework" OFF)
-option(SYSTEM_EXPAT     "Set to ON to build SimGear using the system libExpat" OFF)
+option(SYSTEM_EXPAT     "Set to ON to build SimGear using the system expat library" OFF)
+option(SYSTEM_UDNS      "Set to ON to build SimGear using the system udns library" OFF)
 else()
 # Building SimGear DLLs is currently not supported for MSVC.
 set(SIMGEAR_SHARED OFF)
-# Using a system expat is currently not supported for MSVC - it would require shared simgear (DLL).
+# Using external 3rd party libraries is currently not supported for MSVC - it would require shared simgear (DLL).
 set(SYSTEM_EXPAT OFF)
+set(SYSTEM_UDNS OFF)
 endif()
 
 option(SIMGEAR_HEADLESS "Set to ON to build SimGear without GUI/graphics support" OFF)
 option(ENABLE_RTI       "Set to ON to build SimGear with RTI support" OFF)
+option(ENABLE_GDAL      "Set to ON to build SimGear with GDAL support" OFF)
 option(ENABLE_TESTS     "Set to OFF to disable building SimGear's test applications" ON)
 option(ENABLE_SOUND     "Set to OFF to disable building SimGear's sound support" ON)
+option(USE_AEONWAVE     "Set to ON to use AeonWave instead of OpenAL" OFF)
 option(ENABLE_PKGUTIL   "Set to ON to build the sg_pkgutil application (default)" ON)
 option(ENABLE_DNS       "Set to ON to use udns library and DNS service resolver" ON)
+option(ENABLE_SIMD      "Enable SSE/SSE2 support for x86 compilers" ON)
+option(ENABLE_OPENMP    "Enable OpenMP compiler support" OFF)
+
+include (DetectArch)
+
+# until the fstream fix is applied and generally available in OSG,
+# keep the compatability link option as the default
+option(OSG_FSTREAM_EXPORT_FIXED "Set to ON if the osgDB fstream export patch is applied" OFF)
+
+if (CMAKE_COMPILER_IS_GNUCXX OR CLANG)
+  if (CMAKE_VERSION VERSION_LESS 3.1)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++${CMAKE_CXX_STANDARD}")
+  elseif (CMAKE_VERSION VERSION_LESS 3.8)
+    # policy CMP0067 (try_compile does not honor CMAKE_CXX_STANDARD)
+    set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -std=c++${CMAKE_CXX_STANDARD}")
+  endif()
+endif()
+
 
 if (MSVC)
   GET_FILENAME_COMPONENT(PARENT_DIR ${PROJECT_BINARY_DIR} PATH)
@@ -137,14 +166,15 @@ endif (MSVC)
 
 if (MSVC AND MSVC_3RDPARTY_ROOT)
   message(STATUS "3rdparty files located in ${MSVC_3RDPARTY_ROOT}")
+
   set( OSG_MSVC "msvc" )
-  if (${MSVC_VERSION} EQUAL 1700)
-      set( OSG_MSVC ${OSG_MSVC}110 )
-  elseif (${MSVC_VERSION} EQUAL 1600)
-      set( OSG_MSVC ${OSG_MSVC}100 )
-  else (${MSVC_VERSION} EQUAL 1700)
-      set( OSG_MSVC ${OSG_MSVC}90 )
-  endif (${MSVC_VERSION} EQUAL 1700)
+  if (${MSVC_VERSION} EQUAL 1900)
+      set( OSG_MSVC ${OSG_MSVC}140 )
+  elseif (${MSVC_VERSION} EQUAL 1800)
+      set( OSG_MSVC ${OSG_MSVC}120 )
+  else ()
+      message(FATAL_ERROR "Visual Studio 2013/2015 is required now")
+  endif ()
   if (CMAKE_CL_64)
       set( OSG_MSVC ${OSG_MSVC}-64 )
       set( MSVC_3RDPARTY_DIR 3rdParty.x64 )
@@ -154,44 +184,34 @@ if (MSVC AND MSVC_3RDPARTY_ROOT)
 
   set (CMAKE_LIBRARY_PATH ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/lib ${MSVC_3RDPARTY_ROOT}/install/${OSG_MSVC}/OpenScenegraph/lib ${MSVC_3RDPARTY_ROOT}/install/${OSG_MSVC}/OpenRTI/lib )
   set (CMAKE_INCLUDE_PATH ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/include ${MSVC_3RDPARTY_ROOT}/install/${OSG_MSVC}/OpenScenegraph/include ${MSVC_3RDPARTY_ROOT}/install/${OSG_MSVC}/OpenRTI/include)
-  find_path(BOOST_ROOT boost/version.hpp
-			${MSVC_3RDPARTY_ROOT}/boost
-			${MSVC_3RDPARTY_ROOT}/boost_1_52_0
-			${MSVC_3RDPARTY_ROOT}/boost_1_51_0
-			${MSVC_3RDPARTY_ROOT}/boost_1_50_0
-			${MSVC_3RDPARTY_ROOT}/boost_1_49_0
-			${MSVC_3RDPARTY_ROOT}/boost_1_48_0
-			${MSVC_3RDPARTY_ROOT}/boost_1_47_0
-			${MSVC_3RDPARTY_ROOT}/boost_1_46_1
-			${MSVC_3RDPARTY_ROOT}/boost_1_46_0
-			${MSVC_3RDPARTY_ROOT}/boost_1_45_0
-			${MSVC_3RDPARTY_ROOT}/boost_1_44_0
-			)
-  # set (BOOST_ROOT ${MSVC_3RDPARTY_ROOT}/boost_1_44_0)
-  message(STATUS "BOOST_ROOT is ${BOOST_ROOT}")
-  set (OPENAL_INCLUDE_DIR ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/include)
-  set (OPENAL_LIBRARY_DIR ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/lib)
+
+  if(NOT BOOST_INCLUDEDIR)
+    # if this variable was not set by the user, set it to 3rdparty root's
+    # parent dir, which is the normal location for people using our
+    # windows-3rd-party repo
+    GET_FILENAME_COMPONENT(MSVC_ROOT_PARENT_DIR ${MSVC_3RDPARTY_ROOT} PATH)
+    set(BOOST_INCLUDEDIR ${MSVC_ROOT_PARENT_DIR})
+    message(STATUS "BOOST_INCLUDEDIR is ${BOOST_INCLUDEDIR}")
+  endif()
+
+  if (NOT USE_AEONWAVE)
+    set (OPENAL_INCLUDE_DIR ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/include)
+    set (OPENAL_LIBRARY_DIR ${MSVC_3RDPARTY_ROOT}/${MSVC_3RDPARTY_DIR}/lib)
+    message(STATUS "OPENAL_INCLUDE_DIR is ${OPENAL_INCLUDE_DIR}")
+  endif()
 endif (MSVC AND MSVC_3RDPARTY_ROOT)
 
 if(APPLE)
   find_library(COCOA_LIBRARY Cocoa)
-
-# this should be handled by setting CMAKE_OSX_DEPLOYMENT_TARGET
-# but it's not working reliably, so forcing it for now
-  SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mmacosx-version-min=10.7")
-  SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mmacosx-version-min=10.7")
 endif()
 
-if(${CMAKE_SYSTEM_NAME} MATCHES "Linux" OR
-	${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
+if(${CMAKE_SYSTEM_NAME} MATCHES "Linux" OR ${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
     find_package(Threads REQUIRED)
 endif()
 
-# Somehow this only works if included before searching for Boost...
-include(BoostTestTargets)
-
 find_package(Boost REQUIRED)
 set (BOOST_CXX_FLAGS "-DBOOST_BIMAP_DISABLE_SERIALIZATION")
+include(BoostTestTargets)
 
 if(SIMGEAR_HEADLESS)
     message(STATUS "SimGear mode: HEADLESS")
@@ -201,14 +221,34 @@ else()
     find_package(OpenGL REQUIRED)
 
     if (ENABLE_SOUND)
-        find_package(OpenAL REQUIRED)
+        if (USE_AEONWAVE)
+            find_package(AAX COMPONENTS aax REQUIRED)
+        else()
+            find_package(OpenAL REQUIRED)
+        endif()
+
         message(STATUS "Sound support: ENABLED")
     endif(ENABLE_SOUND)
 
     find_package(OpenSceneGraph 3.2.0 REQUIRED osgText osgSim osgDB osgParticle osgGA osgViewer osgUtil)
+
+    if (MSVC)
+      set(CMAKE_REQUIRED_INCLUDES ${OPENSCENEGRAPH_INCLUDE_DIRS})
+      # ensure OSG was compiled with OSG_USE_UTF8_FILENAME set
+      check_cxx_source_compiles(
+         "#include <osg/Config>
+         #if !defined(OSG_USE_UTF8_FILENAME)
+          #error OSG UTF8 support not enabled
+         #endif
+         int main() { return 0; }"
+         SIMGEAR_OSG_USE_UTF8_FILENAME)
+      if (NOT SIMGEAR_OSG_USE_UTF8_FILENAME)
+        message(FATAL_ERROR "Please rebuild OSG with OSG_USE_UTF8_FILENAME set to ON")
+      endif()
+    endif()
 endif(SIMGEAR_HEADLESS)
 
-find_package(ZLIB REQUIRED)
+find_package(ZLIB 1.2.4 REQUIRED)
 find_package(CURL REQUIRED)
 
 if (SYSTEM_EXPAT)
@@ -222,15 +262,12 @@ else()
     # declaring symbols as declspec(import)
     add_definitions(-DHAVE_EXPAT_CONFIG_H -DXML_STATIC)
     set(EXPAT_INCLUDE_DIRS
-	    ${PROJECT_SOURCE_DIR}/3rdparty/expat
-	    ${PROJECT_BINARY_DIR}/3rdparty/expat)
+            ${PROJECT_SOURCE_DIR}/3rdparty/expat
+            ${PROJECT_BINARY_DIR}/3rdparty/expat)
 endif(SYSTEM_EXPAT)
 
-include_directories(${EXPAT_INCLUDE_DIRS})
-
 check_include_file(inttypes.h HAVE_INTTYPES_H)
 check_include_file(sys/time.h HAVE_SYS_TIME_H)
-check_include_file(sys/timeb.h HAVE_SYS_TIMEB_H)
 check_include_file(unistd.h HAVE_UNISTD_H)
 check_include_file(windows.h HAVE_WINDOWS_H)
 
@@ -240,21 +277,41 @@ if(HAVE_INTTYPES_H)
 endif()
 
 if(ENABLE_RTI)
-    # See if we have any rti library variant installed
-    message(STATUS "RTI: ENABLED")
-    find_package(RTI)
+    find_package(PkgConfig)
+    if(PKG_CONFIG_FOUND)
+      SET(ENV{PKG_CONFIG_PATH} "${CMAKE_INSTALL_PREFIX}/lib/pkgconfig:$ENV{PKG_CONFIG_PATH}")
+      pkg_check_modules(RTI hla-rti13)
+    endif(PKG_CONFIG_FOUND)
+    if(RTI_FOUND)
+      SET(RTI_INCLUDE_DIR "${RTI_INCLUDE_DIRS}")
+      message(STATUS "RTI: ENABLED")
+    else()
+      message(STATUS "RTI: DISABLED")
+    endif(RTI_FOUND)
 else()
     message(STATUS "RTI: DISABLED")
 endif(ENABLE_RTI)
 
+if(ENABLE_GDAL)
+    find_package(GDAL 2.0.0 REQUIRED)
+    if (GDAL_FOUND)
+        include_directories(${GDAL_INCLUDE_DIR})
+    endif(GDAL_FOUND)
+endif(ENABLE_GDAL)
+
 check_function_exists(gettimeofday HAVE_GETTIMEOFDAY)
-check_function_exists(ftime HAVE_FTIME)
-check_function_exists(timegm HAVE_TIMEGM)
 check_function_exists(rint HAVE_RINT)
 check_function_exists(mkdtemp HAVE_MKDTEMP)
 check_function_exists(bcopy HAVE_BCOPY)
 check_function_exists(mmap HAVE_MMAP)
 
+if (NOT MSVC)
+  check_function_exists(timegm HAVE_TIMEGM)
+  if (NOT HAVE_TIMEGM)
+    message(FATAL_ERROR "Non-Windows platforms must support timegm()")
+  endif()
+endif()
+
 if(HAVE_UNISTD_H)
     set(CMAKE_REQUIRED_INCLUDES ${CMAKE_INCLUDE_PATH})
     check_cxx_source_compiles(
@@ -298,19 +355,54 @@ SET(CMAKE_RELWITHDEBINFO_POSTFIX "" CACHE STRING "add a postfix, usually empty o
 SET(CMAKE_MINSIZEREL_POSTFIX "" CACHE STRING "add a postfix, usually empty on windows")
 
 # isnan might not be real symbol, so can't check using function_exists
-check_cxx_source_compiles(
-    "#include <cmath>
-    int main() { return isnan(0.0);} "
-    HAVE_ISNAN)
-
 check_cxx_source_compiles(
     "#include <cmath>
     int main() { return std::isnan(0.0);} "
     HAVE_STD_ISNAN)
 
+if (NOT ${HAVE_STD_ISNAN})
+  message(FATAL_ERROR "Your compiler lacks C++11 std::isnan, please update it")
+endif()
+
+# Check if the <regex> implementation in the C++ standard library is usable.
+# This is necessary because g++ 4.8 lies about its C++11 compliance: its
+# <regex> is utterly unusable, cf. [1].
+# The big preprocessor test essentially comes from [2], and gcc upstream devs
+# appear to back it (see comments following [2], as well as [3]).
+#
+#   [1] https://stackoverflow.com/a/12665408/4756009
+#   [2] https://stackoverflow.com/a/41186162/4756009
+#   [3] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78905
+check_cxx_source_compiles(
+    "#include <regex>
+
+     int main() {
+       #if __cplusplus >= 201103L &&                             \
+           (!defined(__GLIBCXX__)                         ||     \
+            (__cplusplus >= 201402L)                      ||     \
+            defined(_GLIBCXX_REGEX_DFS_QUANTIFIERS_LIMIT) ||     \
+            defined(_GLIBCXX_REGEX_STATE_LIMIT)           ||     \
+            (defined(_GLIBCXX_RELEASE) && _GLIBCXX_RELEASE > 4))
+       #else
+         nullptr = void; // intentionally trigger a compilation error
+       #endif
+     }"
+    HAVE_WORKING_STD_REGEX)
+
 if(CMAKE_COMPILER_IS_GNUCXX)
-    set(WARNING_FLAGS_CXX "-Wall")
-    set(WARNING_FLAGS_C   "-Wall")
+    set(WARNING_FLAGS_CXX "-Wall -fPIC")
+    set(WARNING_FLAGS_C   "-Wall -fPIC")
+
+    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 4.4)
+      message(WARNING "GCC 4.4 will be required soon, please upgrade")
+    endif()
+
+    if(ENABLE_SIMD)
+      if (X86 OR X86_64)
+        set(CMAKE_C_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse")
+        set(CMAKE_CXX_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse")
+      endif()
+    endif()
 
     # certain GCC versions don't provide the atomic builds, and hence
     # require is to provide them in SGAtomic.cxx
@@ -320,13 +412,33 @@ if(CMAKE_COMPILER_IS_GNUCXX)
         GCC_ATOMIC_BUILTINS_FOUND)
 endif(CMAKE_COMPILER_IS_GNUCXX)
 
-if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+if (CLANG)
     # Boost redeclares class members
-    set(WARNING_FLAGS_CXX "-Wall -Wno-overloaded-virtual -Wno-redeclared-class-member")
-    set(WARNING_FLAGS_C   "-Wall")
+    set(WARNING_FLAGS_CXX "-Wall -fPIC -Wno-overloaded-virtual -Wno-redeclared-class-member")
+    set(WARNING_FLAGS_C   "-Wall -fPIC")
     set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LIBRARY "libc++")
-    set(CMAKE_XCODE_ATTRIBUTE_CLANG_CXX_LANGUAGE_STANDARD "c++11")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -stdlib=libc++")
+    # fix Boost compilation :(
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++")
+
+    if(ENABLE_SIMD)
+      if (X86 OR X86_64)
+        set(CMAKE_C_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse")
+        set(CMAKE_CXX_FLAGS_RELEASE "-O3 -msse2 -mfpmath=sse")
+      endif()
+    endif()
+endif()
+
+if (ENABLE_OPENMP)
+    find_package(OpenMP)
+    if(OPENMP_FOUND)
+        message(STATUS "OpenMP: ENABLED")
+        set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${OpenMP_C_FLAGS}")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${OpenMP_CXX_FLAGS}")
+    else()
+        message(STATUS "OpenMP: NOT FOUND")
+    endif()
+else()
+    message(STATUS "OpenMP: DISABLED")
 endif()
 
 if(CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
@@ -344,21 +456,35 @@ if(WIN32)
     endif()
 
     if(MSVC)
-        # turn off various warnings
-        # foreach(warning 4244 4251 4267 4275 4290 4786 4305 4996)
-        #     SET(WARNING_FLAGS "${WARNING_FLAGS} /wd${warning}")
-        # endforeach(warning)
+        set(MSVC_FLAGS "-DWIN32 -DNOMINMAX -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D__CRT_NONSTDC_NO_WARNINGS /MP")
+        if(ENABLE_SIMD)
+          if (X86)
+            SET(CMAKE_C_FLAGS_RELEASE "/O2 /arch:SSE /arch:SSE2")
+            SET(CMAKE_CXX_FLAGS_RELEASE "/O2 /arch:SSE /arch:SSE2")
+          else()
+            SET(CMAKE_C_FLAGS_RELEASE "/O2")
+            SET(CMAKE_CXX_FLAGS_RELEASE "/O2")
+          endif()
+        endif()
 
-        set(MSVC_FLAGS "-DWIN32 -DNOMINMAX -D_USE_MATH_DEFINES -D_CRT_SECURE_NO_WARNINGS -D__CRT_NONSTDC_NO_WARNINGS /wd4996 /wd4250 -Dstrdup=_strdup")
-        if (${MSVC_VERSION} GREATER 1599)
+        if (NOT OSG_FSTREAM_EXPORT_FIXED)
+          message(STATUS "For better linking performance, use OSG with patched fstream header")
+          # needed to avoid link errors on multiply-defined standard C++
+          # symbols. Suspect this may be an OSG-DB export bug
             set( MSVC_LD_FLAGS "/FORCE:MULTIPLE" )
-        endif (${MSVC_VERSION} GREATER 1599)
+        endif ()
+
+        if (${MSVC_VERSION} GREATER 1899)
+            # needed for debug builds with VS2015
+            set( MSVC_FLAGS "${MSVC_FLAGS} /bigobj" )
+        endif()
     endif(MSVC)
 
     # assumed on Windows
     set(HAVE_GETLOCALTIME 1)
 
     set( WINSOCK_LIBRARY "ws2_32.lib" )
+    set( SHLWAPI_LIBRARY "Shlwapi.lib" )
     set( RT_LIBRARY "winmm" )
 endif(WIN32)
 
@@ -366,19 +492,12 @@ set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${WARNING_FLAGS_C} ${MSVC_FLAGS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${WARNING_FLAGS_CXX} ${MSVC_FLAGS} ${BOOST_CXX_FLAGS}")
 set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${MSVC_LD_FLAGS}")
 
+include(CheckCXXFeatures)
+
 # use BEFORE to ensure local directories are used first,
 # ahead of system-installed libs
-include_directories(BEFORE ${PROJECT_SOURCE_DIR})
-include_directories(BEFORE ${PROJECT_SOURCE_DIR}/simgear/canvas/ShivaVG/include)
 include_directories(BEFORE ${PROJECT_BINARY_DIR}/simgear)
 
-include_directories(${OPENSCENEGRAPH_INCLUDE_DIRS}
-    ${Boost_INCLUDE_DIRS}
-    ${ZLIB_INCLUDE_DIR}
-    ${OPENAL_INCLUDE_DIR}
-    ${CURL_INCLUDE_DIRS}
-)
-
 add_definitions(-DHAVE_CONFIG_H)
 
 # configure a header file to pass some of the CMake settings
@@ -403,10 +522,12 @@ set(TEST_LIBS_INTERNAL_CORE
     ${CMAKE_THREAD_LIBS_INIT}
     ${ZLIB_LIBRARY}
     ${WINSOCK_LIBRARY}
+    ${SHLWAPI_LIBRARY}
     ${RT_LIBRARY}
     ${DL_LIBRARY}
     ${COCOA_LIBRARY}
-    ${CURL_LIBRARIES})
+    ${CURL_LIBRARIES}
+    ${GDAL_LIBRARY})
 set(TEST_LIBS SimGearCore ${TEST_LIBS_INTERNAL_CORE})
 
 if(NOT SIMGEAR_HEADLESS)
@@ -415,10 +536,15 @@ endif()
 
 install (FILES ${PROJECT_BINARY_DIR}/simgear/simgear_config.h  DESTINATION include/simgear/)
 
-include_directories(3rdparty/utf8/source)
-if (ENABLE_DNS)
-    message(STATUS "DNS resolver: ENABLED")
-    include_directories(3rdparty/udns)
+if(ENABLE_DNS)
+    if(SYSTEM_UDNS)
+        message(STATUS "Requested to use system udns library, forcing SIMGEAR_SHARED to true")
+        set(SIMGEAR_SHARED ON)
+        find_package(Udns REQUIRED)
+    else()
+        message(STATUS "DNS resolver: ENABLED")
+        include_directories(3rdparty/udns)
+    endif()
 else()
     message(STATUS "DNS resolver: DISABLED")
 endif()
@@ -449,7 +575,7 @@ configure_file(SimGearConfig.cmake.in
   @ONLY
 )
 
-set(ConfigPackageLocation lib/cmake/SimGear)
+set(ConfigPackageLocation ${CMAKE_INSTALL_LIBDIR}/cmake/SimGear)
 install(EXPORT SimGearTargets
   DESTINATION ${ConfigPackageLocation}
 )

CMakeModules/BoostTestTargets.cmake

@@ -157,7 +157,7 @@ function(add_boost_test _name)
 		endforeach()
 
 		if(NOT _boostTestTargetsNagged${_name} STREQUAL "${includeType}")
-			if("includeType" STREQUAL "CONFIGURED")
+			if("${includeType}" STREQUAL "CONFIGURED")
 				message(STATUS
 					"Test '${_name}' uses the CMake-configurable form of the boost test framework - congrats! (Including File: ${includeFileLoc})")
 			elseif("${includeType}" STREQUAL "INCLUDED")

CMakeModules/CheckCXXFeatures.cmake

@@ -0,0 +1,30 @@
+check_cxx_source_compiles("
+  #include <utility>
+  #include <type_traits>
+  std::make_index_sequence<0> t;
+  int main() {}" HAVE_STD_INDEX_SEQUENCE
+)
+
+check_cxx_source_compiles("
+  #include <type_traits>
+  std::remove_cv_t<const int> t;
+  int main() {}" HAVE_STD_REMOVE_CV_T
+)
+
+check_cxx_source_compiles("
+  #include <type_traits>
+  std::remove_cvref_t<const int&> t;
+  int main() {}" HAVE_STD_REMOVE_CVREF_T
+)
+
+check_cxx_source_compiles("
+  #include <type_traits>
+  std::enable_if_t<true, int> t;
+  int main() {}" HAVE_STD_ENABLE_IF_T
+)
+
+check_cxx_source_compiles("
+  #include <type_traits>
+  std::bool_constant<true> t;
+  int main() {}" HAVE_STD_BOOL_CONSTANT
+)

CMakeModules/DetectArch.cmake

@@ -0,0 +1,37 @@
+IF(CMAKE_SYSTEM_PROCESSOR MATCHES amd64.*|x86_64.* OR CMAKE_GENERATOR MATCHES "Visual Studio.*Win64")
+  IF(CMAKE_C_FLAGS MATCHES -m32 OR CMAKE_CXX_FLAGS MATCHES -m32)
+    SET(X86 1)
+  ELSE(CMAKE_C_FLAGS MATCHES -m32 OR CMAKE_CXX_FLAGS MATCHES -m32)
+    SET(X86_64 1)
+  ENDIF(CMAKE_C_FLAGS MATCHES -m32 OR CMAKE_CXX_FLAGS MATCHES -m32)
+ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES i686.*|i386.*|x86.* OR WIN32)
+  IF(CMAKE_C_FLAGS MATCHES -m64 OR CMAKE_CXX_FLAGS MATCHES -m64)
+    SET(X86_64 1)
+  ELSE(CMAKE_C_FLAGS MATCHES -m64 OR CMAKE_CXX_FLAGS MATCHES -m64)
+    SET(X86 1)
+  ENDIF(CMAKE_C_FLAGS MATCHES -m64 OR CMAKE_CXX_FLAGS MATCHES -m64)
+ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES arm.* AND CMAKE_SYSTEM_NAME STREQUAL "Linux")
+    SET(ARM 1)
+ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES mips)
+    SET(MIPS 1)
+ENDIF()
+
+IF ("${CMAKE_C_COMPILER_ID}" STREQUAL "Clang" OR "${CMAKE_C_COMPILER_ID}" STREQUAL "AppleClang")
+  # using Clang
+  SET(CLANG 1)
+ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "TinyCC")
+  # using TinyCC
+  SET(TINYCC 1)
+ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "GNU")
+  # using GCC
+  SET(GCC 1)
+ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "Intel")
+  # using Intel C++
+  SET(INTELCC 1)
+ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "MSVC")
+  # using Visual Studio C++
+  SET(MSVC 1)
+ELSEIF ("${CMAKE_C_COMPILER_ID}" STREQUAL "MIPSpro")
+  # using SGI MIPSpro
+  SET(MIPSPRO 1)
+ENDIF()

CMakeModules/FindAAX.cmake

@@ -0,0 +1,61 @@
+# Locate AAX
+# This module defines
+# AAX_LIBRARIES
+# AAX_FOUND, if false, do not try to link to AAX 
+# AAX_INCLUDE_DIR, where to find the headers
+#
+# $AAXDIR is an environment variable that would
+# correspond to the ./configure --prefix=$AAXDIR
+# used in building AAX.
+#
+# Created by Erik Hofman.
+
+FIND_PATH(AAX_INCLUDE_DIR aax/aax.h
+  HINTS
+  $ENV{AAXDIR}
+  $ENV{ProgramFiles}/aax
+  $ENV{ProgramFiles}/AeonWave
+  $ENV{ProgramFiles}/Adalin/AeonWave
+  ${CMAKE_SOURCE_DIR}/aax
+  PATH_SUFFIXES include
+  PATHS
+  ~/Library/Frameworks
+  /Library/Frameworks
+  /usr/local
+  /usr
+  /opt
+)
+
+FIND_LIBRARY(AAX_LIBRARY 
+  NAMES AAX aax AAX32
+  HINTS
+  $ENV{AAXDIR}
+  $ENV{ProgramFiles}/AAX
+  $ENV{ProgramFiles}/AeonWave
+  $ENV{ProgramFiles}/Adalin/AeonWave
+  ${CMAKE_BUILD_DIR}/aax
+  PATH_SUFFIXES bin lib lib/${CMAKE_LIBRARY_ARCHITECTURE} lib64 libs64 libs libs/Win32 libs/Win64
+  PATHS
+  ~/Library/Frameworks
+  /Library/Frameworks
+  /usr/local
+  /usr
+  /opt
+)
+
+IF(AAX_LIBRARY AND AAX_INCLUDE_DIR)
+  SET(AAX_FOUND "YES")
+ELSE(AAX_LIBRARY AND AAX_INCLUDE_DIR)
+  IF(NOT AAX_INCLUDE_DIR)
+    MESSAGE(FATAL_ERROR "Unable to find the AAX library development files.")
+    SET(AAX_FOUND "NO")
+  ENDIF(NOT AAX_INCLUDE_DIR)
+  IF(NOT AAX_LIBRARY)
+    IF(SINGLE_PACKAGE)
+      SET(AAX_LIBRARY "${aax_BUILD_DIR}/aax/AAX32.dll")
+      SET(AAX_FOUND "YES")
+    ELSE(SINGLE_PACKAGE)
+    ENDIF(SINGLE_PACKAGE)
+  ENDIF(NOT AAX_LIBRARY)
+ENDIF(AAX_LIBRARY AND AAX_INCLUDE_DIR)
+

CMakeModules/FindUdns.cmake

@@ -0,0 +1,42 @@
+# - Try to find UDNS library
+# Once done this will define
+#
+#  UDNS_FOUND - system has UDNS
+#  UDNS_INCLUDE_DIRS - the UDNS include directory
+#  UDNS_LIBRARIES - Link these to use UDNS
+#  UDNS_DEFINITIONS - Compiler switches required for using UDNS
+#
+#  Copyright (c) 2016 Maciej Mrozowski <reavertm@gmail.com>
+#
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at
+# http://www.boost.org/LICENSE_1_0.txt)
+
+
+if (UDNS_LIBRARIES AND UDNS_INCLUDE_DIRS)
+  # in cache already
+  set(UDNS_FOUND TRUE)
+else ()
+  set(UDNS_DEFINITIONS "")
+
+  find_path(UDNS_INCLUDE_DIRS NAMES udns.h)
+  find_library(UDNS_LIBRARIES NAMES udns)
+
+  if (UDNS_INCLUDE_DIRS AND UDNS_LIBRARIES)
+    set(UDNS_FOUND TRUE)
+  endif ()
+
+  if (UDNS_FOUND)
+    if (NOT Udns_FIND_QUIETLY)
+      message(STATUS "Found UDNS: ${UDNS_LIBRARIES}")
+    endif ()
+  else ()
+    if (Udns_FIND_REQUIRED)
+      message(FATAL_ERROR "Could not find UDNS")
+    endif ()
+  endif ()
+
+  # show the UDNS_INCLUDE_DIRS and UDNS_LIBRARIES variables only in the advanced view
+  mark_as_advanced(UDNS_INCLUDE_DIRS UDNS_LIBRARIES)
+
+endif ()

DoxygenMain.cxx

@@ -2,6 +2,10 @@
    documentation.  It has a .cxx extension so that emacs will happily
    autoindent correctly. */
 
+/**
+ * \namespace simgear
+ * \brief \ref index "SimGear" main namespace.
+ */
 /** \mainpage SimGear
  * Simulation, Visualization, and Game development libraries.
 

SimGear.spec.in

@@ -1,76 +0,0 @@
-%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
-

SimGearConfig.cmake.in

@@ -7,10 +7,20 @@ find_dependency(Threads)
 
 set(SIMGEAR_HEADLESS @SIMGEAR_HEADLESS@)
 set(SIMGEAR_SOUND @ENABLE_SOUND@)
+set(USE_AEONWAVE @USE_AEONWAVE@)
 
 # OpenAL isn't a public dependency, so maybe not needed
 #if (SIMGEAR_SOUND)
 #  find_dependency(OpenAL)
 #endif()
 
+# SSE/SSE2 support
+
+set(ENABLE_SIMD @ENABLE_SIMD@)
+
+# Alternative terrain engine based on pagedLOD
+
+set(ENABLE_GDAL @ENABLE_GDAL@)
+set(ENABLE_OPENMP @ENABLE_OPENMP@)
+
 include("${CMAKE_CURRENT_LIST_DIR}/SimGearTargets.cmake")

package/RedHat/README

@@ -1,13 +0,0 @@
-Building a SimGear RPM package for Red Hat
-
-Please see the "package/openSUSE" directory for an
-example how to build a SimGear RPM package with
-shared SimGear libraries.
-
-You may need to adapt the names (exact spelling) of some
-of the package dependencies in the openSUSE RPM spec,
-since these may slightly differ for Red Hat.
-
-(If you have a working and tested Red Hat RPM spec,
-you're welcome to contribute it to this project.)
-

package/openSUSE/README

@@ -1,23 +0,0 @@
-Building a SimGear RPM package for openSUSE
-
-(Last tested with openSUSE 11.4+12.1)
-
-This directory contains the files which, along with
-the source code tar files, can be used to build
-an RPM package targeted at an openSUSE Linux system.
-
-To build SimGear from source do the following:
-
-1. obtain simgear-2.8.0.tar.bz2 (adapt version if
-    necessary) and copy it into ~/rpmbuild/SOURCES
-
-2. look in the BuildRequires section of SimGear.spec
-   and check that all the packages referred to are
-   installed (note, some of these packages may be part
-   of openSUSE's "games" repository).
-
-3. run 'rpmbuild -ba simgear.spec' and find the RPM
-   build result in ~/rpmbuild/RPMS
-
-That's all!
-

package/openSUSE/SimGear.spec

@@ -1,63 +0,0 @@
-Summary:    Simulator Construction Gear
-Name:       SimGear
-Version:    2.8.0
-Release:    1
-License:    LGPL
-URL:        http://www.flightgear.org
-Group:      Amusements/Games/3D/Simulation
-Source:     http://mirrors.ibiblio.org/pub/mirrors/flightgear/ftp/Source/simgear-%{version}.tar.bz2
-BuildRoot:  %{_tmppath}/%{name}-%{version}-build
-
-BuildRequires: gcc, gcc-c++, cmake
-BuildRequires: libopenal1-soft, openal-soft
-BuildRequires: libOpenSceneGraph-devel >= 3.0
-BuildRequires: zlib, zlib-devel
-BuildRequires: libjpeg62, libjpeg62-devel
-BuildRequires: boost-devel >= 1.37
-BuildRequires: subversion-devel, libapr1-devel
-Requires:      OpenSceneGraph-plugins >= 3.0
-
-%description
-This package contains a tools and libraries useful for constructing
-simulation and visualization applications such as FlightGear or TerraGear.
-
-%package devel
-Group:         Development/Libraries/Other
-Summary:       Development header files for SimGear
-Requires:      SimGear = %{version}
-
-%description devel
-Development headers and libraries for building applications against SimGear.
-
-%prep
-%setup -T -q -n simgear-%{version} -b 0
-
-%build
-export CFLAGS="$RPM_OPT_FLAGS"
-export CXXFLAGS="$RPM_OPT_FLAGS"
-# build SHARED simgear libraries
-cmake -DCMAKE_INSTALL_PREFIX=%{_prefix} -DSIMGEAR_SHARED:BOOL=ON -DENABLE_TESTS:BOOL=OFF -DJPEG_FACTORY:BOOL=ON
-make %{?_smp_mflags}
-
-%install
-make DESTDIR=%{buildroot} install
-
-%post -p /sbin/ldconfig
-
-%postun -p /sbin/ldconfig
-
-%files
-%defattr (-, root, root, -)
-%doc AUTHORS COPYING ChangeLog NEWS README
-%{_libdir}/libSimGear*.so.*
-
-%files devel
-%defattr(-,root,root,-)
-%dir %{_includedir}/simgear
-%{_includedir}/simgear/*
-%{_libdir}/libSimGear*.so
-
-%changelog
-* Mon Jul 02 2012 thorstenb@flightgear.org
-- Initial version
-

simgear/CMakeLists.txt

@@ -5,6 +5,7 @@ foreach( mylibfolder
         bucket
         bvh
         debug
+        embedded_resources
         ephemeris
         io
         magvar
@@ -14,6 +15,7 @@ foreach( mylibfolder
         nasal/cppbind
         props
         serial
+        std
         structure
         threads
         timing
@@ -54,24 +56,14 @@ if(SIMGEAR_SHARED)
     set_property(TARGET SimGearCore PROPERTY LINKER_LANGUAGE CXX)
     set_property(TARGET SimGearCore PROPERTY VERSION   ${SIMGEAR_VERSION})
     set_property(TARGET SimGearCore PROPERTY SOVERSION ${SIMGEAR_SOVERSION})
-    install(TARGETS SimGearCore
-            EXPORT SimGearTargets
-            LIBRARY DESTINATION
-            ${CMAKE_INSTALL_LIBDIR})
+
 
     if(NOT SIMGEAR_HEADLESS)
         add_library(SimGearScene SHARED ${sceneSources})
         set_property(TARGET SimGearScene PROPERTY LINKER_LANGUAGE CXX)
         set_property(TARGET SimGearScene PROPERTY VERSION   ${SIMGEAR_VERSION})
         set_property(TARGET SimGearScene PROPERTY SOVERSION ${SIMGEAR_SOVERSION})
-
-        # EXPORT SimGearSceneConfig
-        install(TARGETS SimGearScene
-                EXPORT SimGearTargets
-                LIBRARY
-                DESTINATION ${CMAKE_INSTALL_LIBDIR} )
     endif()
-
 else()
     message(STATUS "Library building mode: STATIC LIBRARIES")
 
@@ -94,9 +86,6 @@ else()
 	endforeach()
 
     add_library(SimGearCore STATIC ${coreSources} ${localExpatSources})
-    install(TARGETS SimGearCore
-            EXPORT SimGearTargets
-            ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
 
     if(NOT SIMGEAR_HEADLESS)
 		get_property(FG_GROUPS_SCENE_SOURCES_C GLOBAL PROPERTY FG_GROUPS_SCENE_SOURCES_C)
@@ -118,22 +107,65 @@ else()
 		endforeach()
 
         add_library(SimGearScene STATIC ${sceneSources})
-        install(TARGETS SimGearScene
-                EXPORT SimGearTargets
-                ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
     endif(NOT SIMGEAR_HEADLESS)
 endif(SIMGEAR_SHARED)
 
+target_include_directories(SimGearCore BEFORE PUBLIC
+    $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}>
+    $<INSTALL_INTERFACE:include>)
+
+target_include_directories(SimGearCore PUBLIC
+  ${Boost_INCLUDE_DIRS} ${ZLIB_INCLUDE_DIR})
+target_include_directories(SimGearCore PRIVATE
+  ${EXPAT_INCLUDE_DIRS} ${CURL_INCLUDE_DIRS})
+
+    install(TARGETS SimGearCore
+            EXPORT SimGearTargets
+            LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+            ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
+
+if (NOT SIMGEAR_HEADLESS)
+  install(TARGETS SimGearScene
+          EXPORT SimGearTargets
+          LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+          ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
+
+  target_include_directories(SimGearScene BEFORE PUBLIC
+      $<BUILD_INTERFACE:${PROJECT_SOURCE_DIR}>
+    $<INSTALL_INTERFACE:include>)
+
+    target_include_directories(SimGearScene PUBLIC ${OPENSCENEGRAPH_INCLUDE_DIRS})
+
+    if (USE_AEONWAVE)
+      target_include_directories(SimGearScene PRIVATE ${AAX_INCLUDE_DIR} )
+    else()
+      target_include_directories(SimGearScene PRIVATE ${OPENAL_INCLUDE_DIR} )
+    endif()
+endif()
+
+
 target_link_libraries(SimGearCore
     ${ZLIB_LIBRARY}
     ${RT_LIBRARY}
     ${DL_LIBRARY}
-    ${EXPAT_LIBRARIES}
     ${CMAKE_THREAD_LIBS_INIT}
     ${COCOA_LIBRARY}
-    ${CURL_LIBRARIES})
+    ${CURL_LIBRARIES}
+    ${WINSOCK_LIBRARY})
+
+if(SYSTEM_EXPAT)
+    target_link_libraries(SimGearCore
+        ${EXPAT_LIBRARIES})
+endif()
+
+if(ENABLE_DNS AND SYSTEM_UDNS)
+    target_link_libraries(SimGearCore
+        ${UDNS_LIBRARIES})
+endif()
 
 if(NOT SIMGEAR_HEADLESS)
+    target_include_directories(SimGearScene PRIVATE ${PROJECT_SOURCE_DIR}/simgear/canvas/ShivaVG/include)
+
     target_link_libraries(SimGearScene
         SimGearCore
         ${ZLIB_LIBRARY}
@@ -141,6 +173,14 @@ if(NOT SIMGEAR_HEADLESS)
         ${OPENAL_LIBRARY}
         ${OPENGL_LIBRARY}
         ${JPEG_LIBRARY})
+
+    if(ENABLE_GDAL)
+        target_link_libraries(SimGearScene
+            ${GDAL_LIBRARIES})
+    endif()
+
+    # only actually needed by canvas/KeyboardEvent.cxx
+    target_include_directories(SimGearScene PRIVATE ${PROJECT_SOURCE_DIR}/3rdparty/utf8/source)
 endif()
 
 if(ENABLE_RTI)

simgear/bucket/newbucket.cxx

@@ -227,9 +227,7 @@ std::string SGBucket::gen_base_path() const {
 	    hem, top_lon, pole, top_lat, 
 	    hem, main_lon, pole, main_lat);
 
-    SGPath path( raw_path );
-
-    return path.str();
+    return raw_path;
 }
 
 

simgear/bucket/test_bucket.cxx

@@ -35,124 +35,152 @@ using std::endl;
 
 void testBucketSpans()
 {
-    COMPARE(sg_bucket_span(0.0), 0.125);
-    COMPARE(sg_bucket_span(-20), 0.125);
-    COMPARE(sg_bucket_span(-40), 0.25);
-    COMPARE(sg_bucket_span(89.9), 12.0);
-    COMPARE(sg_bucket_span(88.1), 4.0);
-    COMPARE(sg_bucket_span(-89.9), 12.0);
+    SG_CHECK_EQUAL(sg_bucket_span(0.0), 0.125);
+    SG_CHECK_EQUAL(sg_bucket_span(-20), 0.125);
+    SG_CHECK_EQUAL(sg_bucket_span(-40), 0.25);
+    SG_CHECK_EQUAL(sg_bucket_span(89.9), 12.0);
+    SG_CHECK_EQUAL(sg_bucket_span(88.1), 4.0);
+    SG_CHECK_EQUAL(sg_bucket_span(-89.9), 12.0);
 }
 
 void testBasic()
 {
     SGBucket b1(5.1, 55.05);
-    COMPARE(b1.get_chunk_lon(), 5);
-    COMPARE(b1.get_chunk_lat(), 55);
-    COMPARE(b1.get_x(), 0);
-    COMPARE(b1.get_y(), 0);
-    COMPARE(b1.gen_index(), 3040320);
-    COMPARE(b1.gen_base_path(), "e000n50/e005n55");
-    VERIFY(b1.isValid());
-    
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), 5);
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), 55);
+    SG_CHECK_EQUAL(b1.get_x(), 0);
+    SG_CHECK_EQUAL(b1.get_y(), 0);
+    SG_CHECK_EQUAL(b1.gen_index(), 3040320);
+    SG_CHECK_EQUAL(b1.gen_base_path(), "e000n50/e005n55");
+    SG_VERIFY(b1.isValid());
+
     SGBucket b2(-10.1, -43.8);
-    COMPARE(b2.get_chunk_lon(), -11);
-    COMPARE(b2.get_chunk_lat(), -44);
-    COMPARE(b2.get_x(), 3);
-    COMPARE(b2.get_y(), 1); // latitude chunks numbered bottom to top, it seems
-    COMPARE(b2.gen_base_path(), "w020s50/w011s44");
-    VERIFY(b2.isValid());
-    
+    SG_CHECK_EQUAL(b2.get_chunk_lon(), -11);
+    SG_CHECK_EQUAL(b2.get_chunk_lat(), -44);
+    SG_CHECK_EQUAL(b2.get_x(), 3);
+    // Latitude chunks numbered bottom to top, it seems
+    SG_CHECK_EQUAL(b2.get_y(), 1);
+    SG_CHECK_EQUAL(b2.gen_base_path(), "w020s50/w011s44");
+    SG_VERIFY(b2.isValid());
+
     SGBucket b3(123.48, 9.01);
-    COMPARE(b3.get_chunk_lon(), 123);
-    COMPARE(b3.get_chunk_lat(), 9);
-    COMPARE(b3.get_x(), 3);
-    COMPARE(b3.get_y(), 0);
-    COMPARE(b3.gen_base_path(), "e120n00/e123n09");
-    VERIFY(b3.isValid());
-    
+    SG_CHECK_EQUAL(b3.get_chunk_lon(), 123);
+    SG_CHECK_EQUAL(b3.get_chunk_lat(), 9);
+    SG_CHECK_EQUAL(b3.get_x(), 3);
+    SG_CHECK_EQUAL(b3.get_y(), 0);
+    SG_CHECK_EQUAL(b3.gen_base_path(), "e120n00/e123n09");
+    SG_VERIFY(b3.isValid());
+
     SGBucket defBuck;
-    VERIFY(!defBuck.isValid());
-    
+    SG_VERIFY(!defBuck.isValid());
+
     b3.make_bad();
-    VERIFY(!b3.isValid());
+    SG_VERIFY(!b3.isValid());
 
     SGBucket atAntiMeridian(180.0, 12.3);
-    VERIFY(atAntiMeridian.isValid());
-    COMPARE(atAntiMeridian.get_chunk_lon(), -180);
-    COMPARE(atAntiMeridian.get_x(), 0);
-    
+    SG_VERIFY(atAntiMeridian.isValid());
+    SG_CHECK_EQUAL(atAntiMeridian.get_chunk_lon(), -180);
+    SG_CHECK_EQUAL(atAntiMeridian.get_x(), 0);
+
     SGBucket atAntiMeridian2(-180.0, -78.1);
-    VERIFY(atAntiMeridian2.isValid());
-    COMPARE(atAntiMeridian2.get_chunk_lon(), -180);
-    COMPARE(atAntiMeridian2.get_x(), 0);
-    
-// check comparisom operator overload
+    SG_VERIFY(atAntiMeridian2.isValid());
+    SG_CHECK_EQUAL(atAntiMeridian2.get_chunk_lon(), -180);
+    SG_CHECK_EQUAL(atAntiMeridian2.get_x(), 0);
+
+    // check comparison operator overload
     SGBucket b4(5.11, 55.1);
-    VERIFY(b1 == b4); // should be equal
-    VERIFY(b1 == b1);
-    VERIFY(b1 != defBuck);
-    VERIFY(b1 != b2);
-    
-// check wrapping/clipping of inputs
+    SG_VERIFY(b1 == b4); // should be equal
+    SG_VERIFY(b1 == b1);
+    SG_VERIFY(b1 != defBuck);
+    SG_VERIFY(b1 != b2);
+
+    // check wrapping/clipping of inputs
     SGBucket wrapMeridian(-200.0, 45.0);
-    COMPARE(wrapMeridian.get_chunk_lon(), 160);
-    
+    SG_CHECK_EQUAL(wrapMeridian.get_chunk_lon(), 160);
+
     SGBucket clipPole(48.9, 91);
-    COMPARE(clipPole.get_chunk_lat(), 89);
+    SG_CHECK_EQUAL(clipPole.get_chunk_lat(), 89);
+
+    // test override of a bucket's geod
+    auto geod = SGGeod::fromDegFt(-86.678, 36.1248, 599.0);
+#ifndef NO_DEPRECATED_API
+    SGBucket bna_airport;
+    bna_airport.set_bucket(geod);
+#else
+    SGBucket bna_airport(geod);
+#endif
+    SG_VERIFY(bna_airport.isValid());
+    SG_CHECK_EQUAL(bna_airport.get_chunk_lon(), -87);           // left origin of the 1-degree chunk
+    SG_CHECK_EQUAL(bna_airport.get_chunk_lat(), 36);            // bottom origin of the 1-degree chunk
+    SG_CHECK_EQUAL(bna_airport.get_x(), 1);                     // buckets are 0.25 deg wide at the W87 parallel
+                                                                //   we're 0.322 deg from the origin (second bucket)
+    SG_CHECK_EQUAL(bna_airport.get_y(), 0);                     // buckets are always 0.125 deg tall
+                                                                //   we're 0.1248 deg from the origin (first bucket)
+    SG_CHECK_EQUAL(bna_airport.gen_base_path(), "w090n30/w087n36");
+    SG_CHECK_EQUAL_EP2(bna_airport.get_width_m(), 22479.1, 0.1);
+    SG_CHECK_EQUAL_EP2(bna_airport.get_height_m(), 13914.9, 0.1);
+    SG_CHECK_EQUAL(bna_airport.gen_index_str(), "1531777");     // 0x175F81 = b01011101|01111110|000|001
+                                                                //          =   93-180 | 126-90 | 0 | 1
+                                                                //          =      -87 |     36 | 0 | 1
+
+    // test stream output
+    cout << "[TEST] BNA Airport: " << bna_airport << endl;
+    auto center = bna_airport.get_center();
+    cout << "[TEST] BNA lon: " << center.getLongitudeDeg() << endl;
+    cout << "[TEST] BNA lat: " << center.getLatitudeDeg() << endl;
 }
 
 void testPolar()
 {
     SGBucket b1(0.0, 89.92);
     SGBucket b2(10.0, 89.96);
-    COMPARE(b1.get_chunk_lat(), 89);
-    COMPARE(b1.get_chunk_lon(), 0);
-    COMPARE(b1.get_x(), 0);
-    COMPARE(b1.get_y(), 7);
-    
-    COMPARE_EP(b1.get_highest_lat(), 90.0);
-    COMPARE_EP(b1.get_width_m(), 10.0);
-    
-    COMPARE(b2.get_chunk_lat(), 89);
-    COMPARE(b2.get_chunk_lon(), 0);
-    COMPARE(b2.get_x(), 0);
-    COMPARE(b2.get_y(), 7);
-    
-    COMPARE(b1.gen_index(), b2.gen_index());
-    
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), 89);
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), 0);
+    SG_CHECK_EQUAL(b1.get_x(), 0);
+    SG_CHECK_EQUAL(b1.get_y(), 7);
+
+    SG_CHECK_EQUAL_EP(b1.get_highest_lat(), 90.0);
+    SG_CHECK_EQUAL_EP(b1.get_width_m(), 10.0);
+
+    SG_CHECK_EQUAL(b2.get_chunk_lat(), 89);
+    SG_CHECK_EQUAL(b2.get_chunk_lon(), 0);
+    SG_CHECK_EQUAL(b2.get_x(), 0);
+    SG_CHECK_EQUAL(b2.get_y(), 7);
+
+    SG_CHECK_EQUAL(b1.gen_index(), b2.gen_index());
+
     SGGeod actualNorthPole1 = b1.get_corner(2);
     SGGeod actualNorthPole2 = b1.get_corner(3);
-    COMPARE_EP(actualNorthPole1.getLatitudeDeg(), 90.0);
-    COMPARE_EP(actualNorthPole1.getLongitudeDeg(), 12.0);
-    COMPARE_EP(actualNorthPole2.getLatitudeDeg(), 90.0);
-    COMPARE_EP(actualNorthPole2.getLongitudeDeg(), 0.0);
+    SG_CHECK_EQUAL_EP(actualNorthPole1.getLatitudeDeg(), 90.0);
+    SG_CHECK_EQUAL_EP(actualNorthPole1.getLongitudeDeg(), 12.0);
+    SG_CHECK_EQUAL_EP(actualNorthPole2.getLatitudeDeg(), 90.0);
+    SG_CHECK_EQUAL_EP(actualNorthPole2.getLongitudeDeg(), 0.0);
 
     SGBucket b3(-2, 89.88);
     SGBucket b4(-7, 89.88);
-    COMPARE(b3.gen_index(), b4.gen_index());
-    
+    SG_CHECK_EQUAL(b3.gen_index(), b4.gen_index());
+
     // south pole
     SGBucket b5(-170, -89.88);
     SGBucket b6(-179, -89.88);
-    
-    COMPARE(b5.get_chunk_lat(), -90);
-    COMPARE(b5.get_chunk_lon(), -180);
-    COMPARE(b5.get_x(), 0);
-    COMPARE(b5.get_y(), 0);
-    COMPARE(b5.gen_index(), b6.gen_index());
-    COMPARE_EP(b5.get_highest_lat(), -90.0);
-    COMPARE_EP(b5.get_width_m(), 10.0);
-    
+
+    SG_CHECK_EQUAL(b5.get_chunk_lat(), -90);
+    SG_CHECK_EQUAL(b5.get_chunk_lon(), -180);
+    SG_CHECK_EQUAL(b5.get_x(), 0);
+    SG_CHECK_EQUAL(b5.get_y(), 0);
+    SG_CHECK_EQUAL(b5.gen_index(), b6.gen_index());
+    SG_CHECK_EQUAL_EP(b5.get_highest_lat(), -90.0);
+    SG_CHECK_EQUAL_EP(b5.get_width_m(), 10.0);
+
     SGGeod actualSouthPole1 = b5.get_corner(0);
     SGGeod actualSouthPole2 = b5.get_corner(1);
-    COMPARE_EP(actualSouthPole1.getLatitudeDeg(), -90.0);
-    COMPARE_EP(actualSouthPole1.getLongitudeDeg(), -180);
-    COMPARE_EP(actualSouthPole2.getLatitudeDeg(), -90.0);
-    COMPARE_EP(actualSouthPole2.getLongitudeDeg(), -168);
-    
-    SGBucket b7(200, 89.88);
-    COMPARE(b7.get_chunk_lon(), -168);
+    SG_CHECK_EQUAL_EP(actualSouthPole1.getLatitudeDeg(), -90.0);
+    SG_CHECK_EQUAL_EP(actualSouthPole1.getLongitudeDeg(), -180);
+    SG_CHECK_EQUAL_EP(actualSouthPole2.getLatitudeDeg(), -90.0);
+    SG_CHECK_EQUAL_EP(actualSouthPole2.getLongitudeDeg(), -168);
 
+    SGBucket b7(200, 89.88);
+    SG_CHECK_EQUAL(b7.get_chunk_lon(), -168);
 }
 
 // test the tiles just below the pole (between 86 & 89 degrees N/S)
@@ -160,15 +188,15 @@ void testNearPolar()
 {
     SGBucket b1(1, 88.5);
     SGBucket b2(-1, 88.8);
-    COMPARE(b1.get_chunk_lon(), 0);
-    COMPARE(b1.get_chunk_lat(), 88);
-    VERIFY(b1.gen_index() != b2.gen_index());
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), 0);
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), 88);
+    SG_VERIFY(b1.gen_index() != b2.gen_index());
 
     SGBucket b3(176.1, 88.5);
-    COMPARE(b3.get_chunk_lon(), 176);
-    
+    SG_CHECK_EQUAL(b3.get_chunk_lon(), 176);
+
     SGBucket b4(-178, 88.5);
-    COMPARE(b4.get_chunk_lon(), -180);
+    SG_CHECK_EQUAL(b4.get_chunk_lon(), -180);
 }
 
 void testOffset()
@@ -176,74 +204,74 @@ void testOffset()
     // bucket just below the 22 degree cutoff, so the next tile north
     // is twice the width
     SGBucket b1(-59.8, 21.9);
-    COMPARE(b1.get_chunk_lat(), 21);
-    COMPARE(b1.get_chunk_lon(), -60);
-    COMPARE(b1.get_x(), 1);
-    COMPARE(b1.get_y(), 7);
-    
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), 21);
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), -60);
+    SG_CHECK_EQUAL(b1.get_x(), 1);
+    SG_CHECK_EQUAL(b1.get_y(), 7);
+
     // offset vertically
     SGBucket b2(b1.sibling(0, 1));
-    COMPARE(b2.get_chunk_lat(), 22);
-    COMPARE(b2.get_chunk_lon(), -60);
-    COMPARE(b2.get_x(), 0);
-    COMPARE(b2.get_y(), 0);
+    SG_CHECK_EQUAL(b2.get_chunk_lat(), 22);
+    SG_CHECK_EQUAL(b2.get_chunk_lon(), -60);
+    SG_CHECK_EQUAL(b2.get_x(), 0);
+    SG_CHECK_EQUAL(b2.get_y(), 0);
+
+    SG_CHECK_EQUAL(b2.gen_index(), sgBucketOffset(-59.8, 21.9, 0, 1));
 
-    COMPARE(b2.gen_index(), sgBucketOffset(-59.8, 21.9, 0, 1));
-    
     // offset vertically and horizontally. We compute horizontal (x)
     // movement at the target latitude, so this should move 0.25 * -3 degrees,
     // NOT 0.125 * -3 degrees.
     SGBucket b3(b1.sibling(-3, 1));
-    COMPARE(b3.get_chunk_lat(), 22);
-    COMPARE(b3.get_chunk_lon(), -61);
-    COMPARE(b3.get_x(), 1);
-    COMPARE(b3.get_y(), 0);
-    
-    COMPARE(b3.gen_index(), sgBucketOffset(-59.8, 21.9, -3, 1));
+    SG_CHECK_EQUAL(b3.get_chunk_lat(), 22);
+    SG_CHECK_EQUAL(b3.get_chunk_lon(), -61);
+    SG_CHECK_EQUAL(b3.get_x(), 1);
+    SG_CHECK_EQUAL(b3.get_y(), 0);
+
+    SG_CHECK_EQUAL(b3.gen_index(), sgBucketOffset(-59.8, 21.9, -3, 1));
 }
 
 void testPolarOffset()
 {
     SGBucket b1(-11.7, -89.6);
-    COMPARE(b1.get_chunk_lat(), -90);
-    COMPARE(b1.get_chunk_lon(), -12);
-    COMPARE(b1.get_x(), 0);
-    COMPARE(b1.get_y(), 3);
-    
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), -90);
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), -12);
+    SG_CHECK_EQUAL(b1.get_x(), 0);
+    SG_CHECK_EQUAL(b1.get_y(), 3);
+
     // offset horizontally
     SGBucket b2(b1.sibling(-2, 0));
-    COMPARE(b2.get_chunk_lat(), -90);
-    COMPARE(b2.get_chunk_lon(), -36);
-    COMPARE(b2.get_x(), 0);
-    COMPARE(b2.get_y(), 3);
-    
-    COMPARE(b2.gen_index(), sgBucketOffset(-11.7, -89.6, -2, 0));
-    
-// offset and wrap
+    SG_CHECK_EQUAL(b2.get_chunk_lat(), -90);
+    SG_CHECK_EQUAL(b2.get_chunk_lon(), -36);
+    SG_CHECK_EQUAL(b2.get_x(), 0);
+    SG_CHECK_EQUAL(b2.get_y(), 3);
+
+    SG_CHECK_EQUAL(b2.gen_index(), sgBucketOffset(-11.7, -89.6, -2, 0));
+
+    // offset and wrap
     SGBucket b3(-170, 89.1);
     SGBucket b4(b3.sibling(-1, 0));
-    COMPARE(b4.get_chunk_lat(), 89);
-    COMPARE(b4.get_chunk_lon(), 168);
-    COMPARE(b4.get_x(), 0);
-    COMPARE(b4.get_y(), 0);
-    
-    COMPARE(b4.gen_index(), sgBucketOffset(-170, 89.1, -1, 0));
+    SG_CHECK_EQUAL(b4.get_chunk_lat(), 89);
+    SG_CHECK_EQUAL(b4.get_chunk_lon(), 168);
+    SG_CHECK_EQUAL(b4.get_x(), 0);
+    SG_CHECK_EQUAL(b4.get_y(), 0);
+
+    SG_CHECK_EQUAL(b4.gen_index(), sgBucketOffset(-170, 89.1, -1, 0));
+
 
-    
     SGBucket b5(177, 87.3);
     SGBucket b6(b5.sibling(1, 1));
-    COMPARE(b6.get_chunk_lat(), 87);
-    COMPARE(b6.get_chunk_lon(), -180);
-    COMPARE(b6.get_x(), 0);
-    COMPARE(b6.get_y(), 3);
-    
-    COMPARE(b6.gen_index(), sgBucketOffset(177, 87.3, 1, 1));
+    SG_CHECK_EQUAL(b6.get_chunk_lat(), 87);
+    SG_CHECK_EQUAL(b6.get_chunk_lon(), -180);
+    SG_CHECK_EQUAL(b6.get_x(), 0);
+    SG_CHECK_EQUAL(b6.get_y(), 3);
+
+    SG_CHECK_EQUAL(b6.gen_index(), sgBucketOffset(177, 87.3, 1, 1));
 
     // offset vertically towards the pole
     SGBucket b7(b1.sibling(0, -5));
-    VERIFY(!b7.isValid());
-    
-    VERIFY(!SGBucket(0, 90).sibling(0, 1).isValid());
+    SG_VERIFY(!b7.isValid());
+
+    SG_VERIFY(!SGBucket(0, 90).sibling(0, 1).isValid());
 }
 
 // test behaviour of bucket-offset near the anti-meridian (180-meridian)
@@ -251,33 +279,84 @@ void testOffsetWrap()
 {
     // near the equator
     SGBucket b1(-179.8, 16.8);
-    COMPARE(b1.get_chunk_lat(), 16);
-    COMPARE(b1.get_chunk_lon(), -180);
-    COMPARE(b1.get_x(), 1);
-    COMPARE(b1.get_y(), 6);
-    
+    SG_CHECK_EQUAL(b1.get_chunk_lat(), 16);
+    SG_CHECK_EQUAL(b1.get_chunk_lon(), -180);
+    SG_CHECK_EQUAL(b1.get_x(), 1);
+    SG_CHECK_EQUAL(b1.get_y(), 6);
+
     SGBucket b2(b1.sibling(-2, 0));
-    COMPARE(b2.get_chunk_lat(), 16);
-    COMPARE(b2.get_chunk_lon(), 179);
-    COMPARE(b2.get_x(), 7);
-    COMPARE(b2.get_y(), 6);
-    COMPARE(b2.gen_index(), sgBucketOffset(-179.8, 16.8, -2, 0));
-    
-    
+    SG_CHECK_EQUAL(b2.get_chunk_lat(), 16);
+    SG_CHECK_EQUAL(b2.get_chunk_lon(), 179);
+    SG_CHECK_EQUAL(b2.get_x(), 7);
+    SG_CHECK_EQUAL(b2.get_y(), 6);
+    SG_CHECK_EQUAL(b2.gen_index(), sgBucketOffset(-179.8, 16.8, -2, 0));
+}
+
+void testSiblings()
+{
+    SGBucket bna_airport(-86.678, 36.1248);
+    SG_VERIFY(bna_airport.isValid());
+
+    // retrieve the sibling two positions north-east of my position
+    auto sib1 = bna_airport.sibling(2, 2);
+    SG_CHECK_EQUAL(sib1.get_chunk_lon(), bna_airport.get_chunk_lon());
+    SG_CHECK_EQUAL(sib1.get_chunk_lat(), bna_airport.get_chunk_lat());
+    SG_CHECK_EQUAL(sib1.get_x(), 3);        // my x-pos (1) + 2 = 3
+    SG_CHECK_EQUAL(sib1.get_y(), 2);        // my y-pos (0) + 2 = 2
+    SG_CHECK_EQUAL(sib1.gen_base_path(), bna_airport.gen_base_path());
+
+    // retrieve the one sibling two positions to the north-east
+    std::vector<SGBucket> siblings;
+    bna_airport.siblings(2, 2, siblings);
+    SG_CHECK_EQUAL(siblings.size(), static_cast<std::vector<SGBucket>::size_type>(1));
+    siblings.clear();
+
+    // retrieve the one sibling at the chunk origin of sib1
+    sib1.siblings(-2, -2, siblings);
+    SG_CHECK_EQUAL(siblings.size(), static_cast<std::vector<SGBucket>::size_type>(1));
+    siblings.clear();
+
+    // calculate delta between two buckets
+    int dx = 0;
+    int dy = 0;
+    sgBucketDiff(bna_airport, sib1, &dx, &dy);
+    SG_CHECK_EQUAL(dx, 2);
+    SG_CHECK_EQUAL(dy, 2);
+
+    // retrieve all siblings between two geodetic locations
+    auto geod_bna = SGGeod::fromDegFt(-86.678, 36.1248, 599.0);
+    auto geod_m54 = SGGeod::fromDegFt(-86.317, 36.1908, 122.0);
+    sgGetBuckets(geod_bna, geod_m54, siblings);
+    SG_CHECK_EQUAL(siblings.size(), static_cast<std::vector<SGBucket>::size_type>(4));
+    siblings.clear();
+
+    // edge cases
+
+    // ensure you cannot retrieve the sibling of an invalid bucket
+    SGBucket bad;
+    auto bad_sib = bad.sibling(1, 1);
+    SG_CHECK_EQUAL(bad_sib.get_chunk_lon(), -1000);
+    SG_CHECK_EQUAL(bad.siblings(2, 2, siblings), 0);
+
+    // if we drop below the 22nd parallel, the bucket widths are half the size
+    // expect this to retrieve two buckets
+    bna_airport.siblings(0, -160, siblings);
+    SG_CHECK_EQUAL(siblings.size(), static_cast<std::vector<SGBucket>::size_type>(2));
+    siblings.clear();
 }
 
 int main(int argc, char* argv[])
 {
     testBucketSpans();
-    
+
     testBasic();
     testPolar();
     testNearPolar();
     testOffset();
     testOffsetWrap();
     testPolarOffset();
-    
+    testSiblings();
+
     cout << "all tests passed OK" << endl;
     return 0; // passed
 }
-

simgear/bvh/BVHMaterial.cxx

@@ -15,6 +15,8 @@
 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 
+#include <simgear_config.h>
+
 #include "BVHMaterial.hxx"
 
 namespace simgear {

simgear/bvh/BVHPageNode.cxx

@@ -15,6 +15,8 @@
 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 
+#include <simgear_config.h>
+
 #include "BVHPageNode.hxx"
 
 #include "BVHPager.hxx"

simgear/bvh/BVHPageRequest.cxx

@@ -15,6 +15,8 @@
 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 
+#include <simgear_config.h>
+
 #include "BVHPageRequest.hxx"
 
 namespace simgear {

simgear/bvh/BVHPager.cxx

@@ -15,6 +15,8 @@
 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 
+#include <simgear_config.h>
+
 #include "BVHPager.hxx"
 
 #include <list>

simgear/bvh/BVHStaticNode.cxx

@@ -15,6 +15,8 @@
 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 
+#include <simgear_config.h>
+
 #include "BVHStaticNode.hxx"
 
 namespace simgear {

simgear/bvh/bvhtest.cxx

@@ -15,6 +15,7 @@
 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
 
+#include <simgear_config.h>
 #include <iostream>
 #include <simgear/structure/SGSharedPtr.hxx>
 

simgear/canvas/Canvas.cxx

@@ -16,12 +16,16 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
+
 #include "Canvas.hxx"
 #include "CanvasEventManager.hxx"
 #include "CanvasEventVisitor.hxx"
 #include "CanvasPlacement.hxx"
+
 #include <simgear/canvas/events/KeyboardEvent.hxx>
 #include <simgear/canvas/events/MouseEvent.hxx>
+#include <simgear/misc/strutils.hxx>
 #include <simgear/scene/util/parse_color.hxx>
 #include <simgear/scene/util/RenderConstants.hxx>
 
@@ -30,9 +34,6 @@
 #include <osgText/Text>
 #include <osgViewer/Viewer>
 
-#include <boost/algorithm/string/predicate.hpp>
-#include <boost/foreach.hpp>
-
 namespace simgear
 {
 namespace canvas
@@ -62,18 +63,9 @@ namespace canvas
   //----------------------------------------------------------------------------
   Canvas::Canvas(SGPropertyNode* node):
     PropertyBasedElement(node),
-    _canvas_mgr(0),
     _event_manager(new EventManager),
-    _size_x(-1),
-    _size_y(-1),
-    _view_width(-1),
-    _view_height(-1),
     _status(node, "status"),
-    _status_msg(node, "status-msg"),
-    _sampling_dirty(false),
-    _render_dirty(true),
-    _visible(true),
-    _render_always(false)
+    _status_msg(node, "status-msg")
   {
     _status = 0;
     setStatusFlags(MISSING_SIZE_X | MISSING_SIZE_Y);
@@ -234,6 +226,10 @@ namespace canvas
 
     if( _status & STATUS_DIRTY )
     {
+      // Retrieve reference here, to ensure the scene group is not deleted while
+      // creating the new texture and camera
+      osg::ref_ptr<osg::Group> root_scene_group = _root_group->getSceneGroup();
+
       _texture.setSize(_size_x, _size_y);
 
       if( !_texture.serviceable() )
@@ -259,7 +255,7 @@ namespace canvas
       parseColor(_node->getStringValue("background"), clear_color);
       camera->setClearColor(clear_color);
 
-      camera->addChild(_root_group->getMatrixTransform());
+      camera->addChild(root_scene_group);
 
       if( _texture.serviceable() )
       {
@@ -279,7 +275,7 @@ namespace canvas
 
     if( _visible || _render_always )
     {
-      BOOST_FOREACH(CanvasWeakPtr canvas_weak, _child_canvases)
+      for(auto& canvas_weak: _child_canvases)
       {
         // TODO should we check if the image the child canvas is displayed
         //      within is really visible?
@@ -291,7 +287,7 @@ namespace canvas
       if( _render_dirty )
       {
         // Also mark all canvases this canvas is displayed within as dirty
-        BOOST_FOREACH(CanvasWeakPtr canvas_weak, _parent_canvases)
+        for(auto& canvas_weak: _parent_canvases)
         {
           CanvasPtr canvas = canvas_weak.lock();
           if( canvas )
@@ -520,8 +516,8 @@ namespace canvas
   {
     const std::string& name = node->getNameString();
 
-    if(    boost::starts_with(name, "status")
-        || boost::starts_with(name, "data-") )
+    if(    strutils::starts_with(name, "status")
+        || strutils::starts_with(name, "data-") )
       return;
     _render_dirty = true;
 
@@ -536,7 +532,7 @@ namespace canvas
         if( !placements.empty() )
         {
           bool placement_dirty = false;
-          BOOST_FOREACH(PlacementPtr& placement, placements)
+          for(auto& placement: placements)
           {
             // check if change can be directly handled by placement
             if(    placement->getProps() == node->getParent()

simgear/canvas/Canvas.hxx

@@ -33,7 +33,7 @@
 #include <osg/NodeCallback>
 #include <osg/observer_ptr>
 
-#include <boost/scoped_ptr.hpp>
+#include <memory>
 #include <string>
 
 namespace simgear
@@ -211,21 +211,21 @@ namespace canvas
 
     protected:
 
-      CanvasMgr        *_canvas_mgr;
+      CanvasMgr *_canvas_mgr {nullptr};
 
-      boost::scoped_ptr<EventManager> _event_manager;
+      std::unique_ptr<EventManager> _event_manager;
 
-      int _size_x,
-          _size_y,
-          _view_width,
-          _view_height;
+      int _size_x {-1},
+          _size_y {-1},
+          _view_width {-1},
+          _view_height {-1};
 
       PropertyObject<int>           _status;
       PropertyObject<std::string>   _status_msg;
 
-      bool _sampling_dirty,
-           _render_dirty,
-           _visible;
+      bool _sampling_dirty {false},
+           _render_dirty {true},
+           _visible {true};
 
       ODGauge _texture;
 
@@ -235,7 +235,9 @@ namespace canvas
       ElementWeakPtr _focus_element;
 
       CullCallbackPtr _cull_callback;
-      bool _render_always; //!< Used to disable automatic lazy rendering (culling)
+
+      /** Used to disable automatic lazy rendering (culling) */
+      bool _render_always {false};
 
       std::vector<SGPropertyNode*> _dirty_placements;
       std::vector<Placements> _placements;

simgear/canvas/CanvasEvent.cxx

@@ -16,6 +16,8 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
+
 #include "CanvasEvent.hxx"
 
 namespace simgear

simgear/canvas/CanvasEventManager.cxx

@@ -16,6 +16,7 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
 #include "CanvasEventManager.hxx"
 #include <simgear/canvas/events/MouseEvent.hxx>
 #include <simgear/canvas/elements/CanvasElement.hxx>

simgear/canvas/CanvasEventVisitor.cxx

@@ -17,6 +17,7 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
 #include "CanvasEvent.hxx"
 #include "CanvasEventVisitor.hxx"
 #include <simgear/canvas/elements/CanvasElement.hxx>

simgear/canvas/CanvasMgr.cxx

@@ -16,6 +16,7 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
 #include "CanvasMgr.hxx"
 #include "Canvas.hxx"
 #include "CanvasEventManager.hxx"

simgear/canvas/CanvasObjectPlacement.cxx

@@ -19,6 +19,8 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
+
 #include "Canvas.hxx"
 #include "CanvasObjectPlacement.hxx"
 #include <simgear/canvas/events/MouseEvent.hxx>

simgear/canvas/CanvasPlacement.cxx

@@ -16,6 +16,7 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
 #include "CanvasPlacement.hxx"
 #include <simgear/props/props.hxx>
 

simgear/canvas/CanvasWindow.cxx

@@ -16,18 +16,17 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
 #include "CanvasMgr.hxx"
 #include "CanvasSystemAdapter.hxx"
 #include "CanvasWindow.hxx"
 
 #include <simgear/canvas/Canvas.hxx>
+#include <simgear/misc/strutils.hxx>
 #include <simgear/scene/util/OsgMath.hxx>
 
 #include <osgGA/GUIEventHandler>
 
-#include <boost/algorithm/string/predicate.hpp>
-#include <boost/foreach.hpp>
-
 namespace simgear
 {
 namespace canvas
@@ -42,9 +41,6 @@ namespace canvas
                   const Style& parent_style,
                   Element* parent ):
     Image(canvas, node, parent_style, parent),
-    _attributes_dirty(0),
-    _resizable(false),
-    _capture_events(true),
     _resize_top(node, "resize-top"),
     _resize_right(node, "resize-right"),
     _resize_bottom(node, "resize-bottom"),
@@ -91,7 +87,7 @@ namespace canvas
         _capture_events = node->getBoolValue();
       else if( name == "decoration-border" )
         parseDecorationBorder(node->getStringValue());
-      else if(    boost::starts_with(name, "shadow-")
+      else if(    strutils::starts_with(name, "shadow-")
                || name == "content-size" )
         _attributes_dirty |= DECORATION;
       else
@@ -102,16 +98,10 @@ namespace canvas
       Image::valueChanged(node);
   }
 
-  //----------------------------------------------------------------------------
-  osg::Group* Window::getGroup()
-  {
-    return getMatrixTransform();
-  }
-
   //----------------------------------------------------------------------------
   const SGVec2<float> Window::getPosition() const
   {
-    const osg::Matrix& m = getMatrixTransform()->getMatrix();
+    auto const& m = getMatrix();
     return SGVec2<float>( m(3, 0), m(3, 1) );
   }
 

simgear/canvas/CanvasWindow.hxx

@@ -70,7 +70,6 @@ namespace canvas
       virtual void update(double delta_time_sec);
       virtual void valueChanged(SGPropertyNode* node);
 
-      osg::Group* getGroup();
       const SGVec2<float> getPosition() const;
       const SGRect<float>  getScreenRegion() const;
 
@@ -104,7 +103,7 @@ namespace canvas
         DECORATION = 1
       };
 
-      uint32_t  _attributes_dirty;
+      uint32_t  _attributes_dirty {0};
 
       CanvasPtr        _canvas_decoration;
       CanvasWeakPtr    _canvas_content;
@@ -113,8 +112,8 @@ namespace canvas
       ImagePtr _image_content,
                _image_shadow;
 
-      bool _resizable,
-           _capture_events;
+      bool _resizable {false},
+           _capture_events {true};
 
       PropertyObject<int> _resize_top,
                           _resize_right,

simgear/canvas/ShivaVG/src/shDefs.h

@@ -44,6 +44,11 @@
 #if defined(_MSC_VER)
 #  pragma warning(disable:4311)
 #  pragma warning(disable:4312)
+#  define ALIGN16 __declspec(align(16))
+#  define ALIGN16C
+#elif defined(__GNUC__)
+#  define ALIGN16
+#  define ALIGN16C __attribute__((aligned(16)))
 #endif
 
 /* Type definitions */

simgear/canvas/ShivaVG/src/shPipeline.c

@@ -80,8 +80,12 @@ void updateBlendingStateGL(VGContext *c, int alphaIsOne)
 
   case VG_BLEND_SRC_OVER: default:
     glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-    if (alphaIsOne) glDisable(GL_BLEND);
-    else glEnable(GL_BLEND); break;
+    if (alphaIsOne) {
+      glDisable(GL_BLEND);
+    } else {
+      glEnable(GL_BLEND);
+    }
+    break;
   };
 }
 

simgear/canvas/ShivaVG/src/shVectors.c

@@ -35,21 +35,33 @@ void SHVector2_dtor(SHVector2 *v) {
 }
 
 void SHVector3_ctor(SHVector3 *v) {
+#ifdef SHIVA_USE_SIMD
+  v->vec = _mm_setzero_ps();
+#else
   v->x=0.0f; v->y=0.0f; v->z=0.0f;
+#endif
 }
 
 void SHVector3_dtor(SHVector3 *v) {
 }
 
 void SHVector4_ctor(SHVector4 *v) {
+#ifdef SHIVA_USE_SIMD
+  v->vec = _mm_setzero_ps();
+#else
   v->x=0.0f; v->y=0.0f; v->z=0.0f; v->w=0.0f;
+#endif
 }
 
 void SHVector4_dtor(SHVector4 *v) {
 }
 
 void SHRectangle_ctor(SHRectangle *r) {
+#ifdef SHIVA_USE_SIMD
+  r->vec = _mm_setzero_ps();
+#else
   r->x=0.0f; r->y=0.0f; r->w=0.0f; r->h=0.0f;
+#endif
 }
 
 void SHRectangle_dtor(SHRectangle *r) {
@@ -135,3 +147,24 @@ int shLineLineXsection(SHVector2 *o1, SHVector2 *v1,
   xsection->y = o1->y + t1*v1->y;
   return 1;
 }
+
+#ifdef SHIVA_USE_SIMD
+# ifdef __SSE3__
+# include <pmmintrin.h>
+inline float hsum_ps_sse(__m128 v) {
+  __m128 shuf = _mm_movehdup_ps(v);
+  __m128 sums = _mm_add_ps(v, shuf);
+  shuf        = _mm_movehl_ps(shuf, sums);
+  sums        = _mm_add_ss(sums, shuf);
+  return        _mm_cvtss_f32(sums);
+}
+# else
+inline float hsum_ps_sse(__m128 v) {
+  __m128 shuf   = _mm_shuffle_ps(v, v, _MM_SHUFFLE(2, 3, 0, 1));
+  __m128 sums   = _mm_add_ps(v, shuf);
+  shuf          = _mm_movehl_ps(shuf, sums);
+  sums          = _mm_add_ss(sums, shuf);
+  return          _mm_cvtss_f32(sums);
+}
+# endif
+#endif

simgear/canvas/ShivaVG/src/shVectors.h

@@ -21,6 +21,21 @@
 #ifndef __SHVECTORS_H
 #define __SHVECTORS_H
 
+#ifdef HAVE_CONFIG_H
+# include <simgear/simgear_config.h>
+#endif
+
+#ifdef ENABLE_SIMD
+# ifdef __SSE__
+// #  define SHIVA_USE_SIMD
+# endif
+# endif
+
+#ifdef SHIVA_USE_SIMD
+# include <xmmintrin.h>
+float hsum_ps_sse(__m128 v);
+#endif
+
 #include "shDefs.h"
 
 /* Vector structures
@@ -33,9 +48,17 @@ typedef struct
 void SHVector2_ctor(SHVector2 *v);
 void SHVector2_dtor(SHVector2 *v);
 
+
 typedef struct
 {
+#ifdef SHIVA_USE_SIMD
+  union ALIGN16 {
+    __m128 vec;
+    struct { SHfloat x,y,z,w; };
+  } ALIGN16C;
+#else
   SHfloat x,y,z;
+#endif
 } SHVector3;
 
 void SHVector3_ctor(SHVector3 *v);
@@ -43,7 +66,14 @@ void SHVector3_dtor(SHVector3 *v);
 
 typedef struct
 {
+#ifdef SHIVA_USE_SIMD
+  union ALIGN16 {
+    __m128 vec;
+    struct { SHfloat x,y,z,w; };
+  } ALIGN16C;
+#else
   SHfloat x,y,z,w;
+#endif
 } SHVector4;
 
 void SHVector4_ctor(SHVector4 *v);
@@ -51,7 +81,14 @@ void SHVector4_dtor(SHVector4 *v);
 
 typedef struct
 {
+#ifdef SHIVA_USE_SIMD
+  union ALIGN16 {
+    __m128 vec;
+    struct { SHfloat x,y,w,h; };
+  } ALIGN16C;
+#else
   SHfloat x,y,w,h;
+#endif
 } SHRectangle;
 
 void SHRectangle_ctor(SHRectangle *r);
@@ -61,7 +98,14 @@ void shRectangleSet(SHRectangle *r, SHfloat x,
 
 typedef struct
 {
+#ifdef SHIVA_USE_SIMD
+  union ALIGN16 {
+    __m128 mtx[4];
+    SHfloat m[4][4];
+  } ALIGN16C;
+#else
   SHfloat m[3][3];
+#endif
 } SHMatrix3x3;
 
 void SHMatrix3x3_ctor(SHMatrix3x3 *m);
@@ -83,12 +127,22 @@ void SHMatrix3x3_dtor(SHMatrix3x3 *m);
  *--------------------------------------------------------- */
 
 #define SET2(v,xs,ys) { v.x=xs; v.y=ys; }
-#define SET3(v,xs,ys,zs) { v.x=xs; v.y=ys; v.z=zs; }
-#define SET4(v,xs,ys,zs,ws) { v.x=xs; v.y=ys; v.z=zs; v.w=ws; }
+#ifdef SHIVA_USE_SIMD
+# define SET3(v,xs,ys,zs,ws) { v.vec=_mm_set_ps(0,zs,ys,xs); }
+# define SET4(v,xs,ys,zs,ws) { v.vec=_mm_set_ps(ws,zs,ys,xs); }
+#else
+# define SET3(v,xs,ys,zs) { v.x=xs; v.y=ys; v.z=zs; }
+# define SET4(v,xs,ys,zs,ws) { v.x=xs; v.y=ys; v.z=zs; v.w=ws; }
+#endif
 
 #define SET2V(v1,v2) { v1.x=v2.x; v1.y=v2.y; }
-#define SET3V(v1,v2) { v1.x=v2.x; v1.y=v2.y; v1.z=v2.z; }
-#define SET4V(v1,v2) { v1.x=v2.x; v1.y=v2.y; v1.z=v2.z; v1.w=v2.w; }
+#ifdef SHIVA_USE_SIMD
+# define SET3V(v1,v2) { v1.vec=v2.vec; }
+# define SET4V(v1,v2) { v1.vec=v2.vec; }
+#else
+# define SET3V(v1,v2) { v1.x=v2.x; v1.y=v2.y; v1.z=v2.z; }
+# define SET4V(v1,v2) { v1.x=v2.x; v1.y=v2.y; v1.z=v2.z; v1.w=v2.w; }
+#endif
 
 #define EQ2(v,xx,yy)       ( v.x==xx && v.y==yy )
 #define EQ3(v,xx,yy,zz)    ( v.x==xx && v.y==yy && v.z==zz )
@@ -103,48 +157,89 @@ void SHMatrix3x3_dtor(SHMatrix3x3 *m);
 #define EQ4V(v1,v2) ( v1.x==v2.x && v1.y==v2.y && v1.z==v2.z && v1.w==v2.w )
 
 #define ADD2(v,xx,yy)       { v.x+=xx; v.y+=yy; }
-#define ADD3(v,xx,yy,zz)    { v.x+=xx; v.y+=yy; v.z+=zz; }
-#define ADD4(v,xx,yy,zz,ww) { v.x+=xx; v.y+=yy; v.z+=zz; v.w+=ww; }
+#ifdef SHIVA_USE_SIMD
+# define ADD3(v,xx,yy,zz,ww) { v.vec=_mm_add_ps(v.vec,_mm_set_ps(0,zz,yy,xx)); }
+# define ADD4(v,xx,yy,zz,ww) { v.vec=_mm_add_ps(v.vec,_mm_set_ps(ww,zz,yy,xx)); }
+#else
+# define ADD3(v,xx,yy,zz)    { v.x+=xx; v.y+=yy; v.z+=zz; }
+# define ADD4(v,xx,yy,zz,ww) { v.x+=xx; v.y+=yy; v.z+=zz; v.w+=ww; }
+#endif
 
 #define ADD2V(v1,v2) { v1.x+=v2.x; v1.y+=v2.y; }
-#define ADD3V(v1,v2) { v1.x+=v2.x; v1.y+=v2.y; v1.z+=v2.z; }
-#define ADD4V(v1,v2) { v1.x+=v2.x; v1.y+=v2.y; v1.z+=v2.z; v1.w+=v2.w; }
+#ifdef SHIVA_USE_SIMD
+# define ADD3V(v1,v2) { v1.vec=_mm_add_ps(v1.vec,v2.vec); }
+# define ADD4V(v1,v2) { v1.vec=_mm_add_ps(v1.vec,v2.vec); }
+#else
+# define ADD3V(v1,v2) { v1.x+=v2.x; v1.y+=v2.y; v1.z+=v2.z; }
+# define ADD4V(v1,v2) { v1.x+=v2.x; v1.y+=v2.y; v1.z+=v2.z; v1.w+=v2.w; }
+#endif
 
 #define SUB2(v,xx,yy)       { v.x-=xx; v.y-=yy; }
-#define SUB3(v,xx,yy,zz)    { v.x-=xx; v.y-=yy; v.z-=zz; }
-#define SUB4(v,xx,yy,zz,ww) { v.x-=xx; v.y-=yy; v.z-=zz; v.w-=v2.w; }
+#ifdef SHIVA_USE_SIMD
+# define SUB3(v,xx,yy,zz,ww) { v.vec=_mm_sub_ps(v.vec,_mm_set_ps(0,zz,yy,xx)); }
+# define SUB4(v,xx,yy,zz,ww) { v.vec=_mm_sub_ps(v.vec,_mm_set_ps(ww,zz,yy,xx)); }
+#else
+# define SUB3(v,xx,yy,zz)    { v.x-=xx; v.y-=yy; v.z-=zz; }
+# define SUB4(v,xx,yy,zz,ww) { v.x-=xx; v.y-=yy; v.z-=zz; v.w-=v2.w; }
+#endif
 
 #define SUB2V(v1,v2) { v1.x-=v2.x; v1.y-=v2.y; }
-#define SUB3V(v1,v2) { v1.x-=v2.x; v1.y-=v2.y; v1.z-=v2.z; }
-#define SUB4V(v1,v2) { v1.x-=v2.x; v1.y-=v2.y; v1.z-=v2.z; v1.w-=v2.w; }
+#ifdef SHIVA_USE_SIMD
+# define SUB3V(v1,v2) { v1.vec=_mm_sub_ps(v1.vec,v2.vec); }
+# define SUB4V(v1,v2) { v1.vec=_mm_sub_ps(v1.vec,v2.vec); }
+#else
+# define SUB3V(v1,v2) { v1.x-=v2.x; v1.y-=v2.y; v1.z-=v2.z; }
+# define SUB4V(v1,v2) { v1.x-=v2.x; v1.y-=v2.y; v1.z-=v2.z; v1.w-=v2.w; }
+#endif
 
 #define MUL2(v,f) { v.x*=f; v.y*=f; }
-#define MUL3(v,f) { v.x*=f; v.y*=f; v.z*=z; }
-#define MUL4(v,f) { v.x*=f; v.y*=f; v.z*=z; v.w*=w; }
+#ifdef SHIVA_USE_SIMD
+# define MUL3(v,f) { v.vec=_mm_mul_ps(v.vec,_mm_set1_ps(f)); }
+# define MUL4(v,f) { v.vec=_mm_mul_ps(v.vec,_mm_set1_ps(f)); }
+#else
+# define MUL3(v,f) { v.x*=f; v.y*=f; v.z*=z; }
+# define MUL4(v,f) { v.x*=f; v.y*=f; v.z*=z; v.w*=w; }
+#endif
 
 #define DIV2(v,f) { v.x/=f; v.y/=f; }
-#define DIV3(v,f) { v.x/=f; v.y/=f; v.z/=z; }
-#define DIV4(v,f) { v.x/=f; v.y/=f; v.z/=z; v.w/=w; }
+#ifdef SHIVA_USE_SIMD
+# define DIV3(v,f) { v.vec=_mm_div_ps(v.vec,_mm_set1_ps(f)); }
+# define DIV4(v,f) { v.vec=_mm_div_ps(v.vec,_mm_set1_ps(f)); }
+#else
+# define DIV3(v,f) { v.x/=f; v.y/=f; v.z/=z; }
+# define DIV4(v,f) { v.x/=f; v.y/=f; v.z/=z; v.w/=w; }
+#endif
 
 #define ABS2(v) { v.x=SH_ABS(v.x); v.y=SH_ABS(v.y); }
-#define ABS3(v) { v.x=SH_ABS(v.x); v.y=SH_ABS(v.y); v.z=SH_ABS(v.z); }
-#define ABS4(v) { v.x=SH_ABS(v.x); v.y=SH_ABS(v.y); v.z=SH_ABS(v.z); v.w=SH_ABS(v.w); }
+#ifdef SHIVA_USE_SIMD
+# define ABS_MASK _mm_set1_ps(-0.f)
+# define ABS3(v) { v.vec=_mm_andnot_ps(ABS_MASK, v.vec); }
+# define ABS4(v) { v.vec=_mm_andnot_ps(ABS_MASK, v.vec); }
+#else
+# define ABS3(v) { v.x=SH_ABS(v.x); v.y=SH_ABS(v.y); v.z=SH_ABS(v.z); }
+# define ABS4(v) { v.x=SH_ABS(v.x); v.y=SH_ABS(v.y); v.z=SH_ABS(v.z); v.w=SH_ABS(v.w); }
+#endif
 
-#define NORMSQ2(v) (v.x*v.x + v.y*v.y)
-#define NORMSQ3(v) (v.x*v.x + v.y*v.y + v.z*v.z)
-#define NORMSQ4(v) (v.x*v.x + v.y*v.y + v.z*v.z + v.w*v.w)
+#define NORMSQ2(v) DOT2(v,v)
+#define NORMSQ3(v) DOT3(v,v)
+#define NORMSQ4(v) DOT4(v,v)
 
 #define NORM2(v) SH_SQRT(NORMSQ2(v))
 #define NORM3(v) SH_SQRT(NORMSQ3(v))
 #define NORM4(v) SH_SQRT(NORMSQ4(v))
 
-#define NORMALIZE2(v) { SHfloat n=NORM2(v); v.x/=n; v.y/=n; }
-#define NORMALIZE3(v) { SHfloat n=NORM3(v); v.x/=n; v.y/=n; v.z/=n; }
-#define NORMALIZE4(v) { SHfloat n=NORM4(v); v.x/=n; v.y/=n; v.z/=n; v.w/=w; }
+#define NORMALIZE2(v) { SHfloat n=NORM2(v); DIV2(v,n); }
+#define NORMALIZE3(v) { SHfloat n=NORM3(v); DIV3(v,n); }
+#define NORMALIZE4(v) { SHfloat n=NORM4(v); DIV4(v,n); }
 
 #define DOT2(v1,v2) (v1.x*v2.x + v1.y*v2.y)
-#define DOT3(v1,v2) (v1.x*v2.x + v1.y*v2.y + v1.z*v2.z)
-#define DOT4(v1,v2) (v1.x*v2.x + v1.y*v2.y + v1.z*v2.z + v1.w*v2.w)
+#ifdef SHIVA_USE_SIMD
+# define DOT4(v1,v2) hsum_ps_sse(_mm_mul_ps(v1.vec,v2.vec))
+# define DOT4(v1,v2) hsum_ps_sse(_mm_mul_ps(v1.vec,v2.vec))
+#else
+# define DOT3(v1,v2) (v1.x*v2.x + v1.y*v2.y + v1.z*v2.z)
+# define DOT4(v1,v2) (v1.x*v2.x + v1.y*v2.y + v1.z*v2.z + v1.w*v2.w)
+#endif
 
 #define CROSS2(v1,v2) (v1.x*v2.y - v2.x*v1.y)
 
@@ -152,37 +247,84 @@ void SHMatrix3x3_dtor(SHMatrix3x3 *m);
 #define ANGLE2N(v1,v2) (SH_ACOS( DOT2(v1,v2) ))
 
 #define OFFSET2V(v, o, s) { v.x += o.x*s; v.y += o.y*s; }
-#define OFFSET3V(v, o, s) { v.x += o.x*s; v.y += o.y*s; v.z += o.z*s; }
-#define OFFSET4V(v, o, s) { v.x += o.x*s; v.y += o.y*s; v.z += o.z*s; v.w += o.w*s; }
+#ifdef SHIVA_USE_SIMD
+# define OFFSET4V(v, o, s) { v.vec=_mm_add_ps(v.vec,_mm_mul_ps(o.vec,_mm_set1_ps(s))); }
+# define OFFSET4V(v, o, s) { v.vec=_mm_add_ps(v.vec,_mm_mul_ps(o.vec,_mm_set1_ps(s))); }
+#else
+# define OFFSET3V(v, o, s) { v.x += o.x*s; v.y += o.y*s; v.z += o.z*s; }
+# define OFFSET4V(v, o, s) { v.x += o.x*s; v.y += o.y*s; v.z += o.z*s; v.w += o.w*s; }
+#endif
 
 /*-----------------------------------------------------
  * Macros for matrix operations
  *-----------------------------------------------------*/
 
-#define SETMAT(mat, m00, m01, m02, m10, m11, m12, m20, m21, m22) { \
-mat.m[0][0] = m00; mat.m[0][1] = m01; mat.m[0][2] = m02; \
+#ifdef SHIVA_USE_SIMD
+# define SETMAT(mat, m00, m01, m02, m10, m11, m12, m20, m21, m22) { \
+  mat.mtx[0] = _mm_set_ps(0,m02,m01,m00); \
+  mat.mtx[1] = _mm_set_ps(0,m12,m11,m10); \
+  mat.mtx[2] = _mm_set_ps(0,m22,m21,m20); \
+  mat.mtx[3] = _mm_setzero_ps(); }
+#else
+# define SETMAT(mat, m00, m01, m02, m10, m11, m12, m20, m21, m22) { \
+  mat.m[0][0] = m00; mat.m[0][1] = m01; mat.m[0][2] = m02; \
   mat.m[1][0] = m10; mat.m[1][1] = m11; mat.m[1][2] = m12; \
   mat.m[2][0] = m20; mat.m[2][1] = m21; mat.m[2][2] = m22; }
+#endif
 
-#define SETMATMAT(m1, m2) { \
+#ifdef SHIVA_USE_SIMD
+# define SETMATMAT(m1, m2) { \
+  m1.mtx[0] = m2.mtx[0]; \
+  m1.mtx[1] = m2.mtx[1]; \
+  m1.mtx[2] = m2.mtx[2]; }
+#else
+# define SETMATMAT(m1, m2) { \
 int i,j; \
   for(i=0;i<3;i++) \
   for(j=0;j<3;j++) \
     m1.m[i][j] = m2.m[i][j]; }
+#endif
 
-#define MULMATS(mat, s) { \
+#ifdef SHIVA_USE_SIMD
+# define MULMATS(mat, s) { \
+  mat.mtx[0] = _mm_mul_ps(mat.mtx[0],_mm_set1_ps(s)); \
+  mat.mtx[1] = _mm_mul_ps(mat.mtx[1],_mm_set1_ps(s)); \
+  mat.mtx[2] = _mm_mul_ps(mat.mtx[2],_mm_set1_ps(s)); }
+#else
+# define MULMATS(mat, s) { \
 int i,j; \
   for(i=0;i<3;i++) \
   for(j=0;j<3;j++) \
     mat.m[i][j] *= s; }
+#endif
 
-#define DIVMATS(mat, s) { \
+#ifdef SHIVA_USE_SIMD
+# define DIVMATS(mat, s) { \
+  mat.mtx[0] = _mm_mul_ps(mat.mtx[0],_mm_set1_ps(1/s)); \
+  mat.mtx[1] = _mm_mul_ps(mat.mtx[1],_mm_set1_ps(1/s)); \
+  mat.mtx[2] = _mm_mul_ps(mat.mtx[2],_mm_set1_ps(1/s)); }
+#else
+# define DIVMATS(mat, s) { \
 int i,j; \
   for(i=0;i<3;i++) \
   for(j=0;j<3;j++) \
     mat.m[i][j] /= s; }
+#endif
 
-#define MULMATMAT(m1, m2, mout) { \
+#ifdef SHIVA_USE_SIMD
+# define MULMATMAT(m2, m1, mout) { \
+  int i,j; \
+  for (i=0;i<4;i++) { \
+    __m128 a = m1.mtx[0]; \
+    __m128 b = _mm_set1_ps(m2.m[i][0]); \
+    mout.mtx[i] = a*b; \
+    for (j=1;j<4;j++) { \
+      a = m1.mtx[j]; \
+      b = _mm_set1_ps(m2.m[i][j]); \
+      mout.mtx[i] += a*b; } } }
+
+#else
+# define MULMATMAT(m1, m2, mout) { \
 int i,j; \
   for(i=0;i<3;i++) \
   for(j=0;j<3;j++) \
@@ -190,6 +332,7 @@ int i,j; \
       m1.m[i][0] * m2.m[0][j] + \
       m1.m[i][1] * m2.m[1][j] + \
       m1.m[i][2] * m2.m[2][j]; }
+#endif
 
 #define IDMAT(mat) SETMAT(mat, 1,0,0, 0,1,0, 0,0,1)
 

simgear/canvas/elements/CMakeLists.txt

@@ -9,10 +9,6 @@ set(HEADERS
   CanvasText.hxx
 )
 
-set(DETAIL_HEADERS
-  detail/add_segment_variadic.hxx
-)
-
 set(SOURCES
   CanvasElement.cxx
   CanvasGroup.cxx
@@ -23,7 +19,6 @@ set(SOURCES
 )
 
 simgear_scene_component(canvas-elements canvas/elements "${SOURCES}" "${HEADERS}")
-simgear_component(canvas-elements/detail canvas/elements/detail "" "${DETAIL_HEADERS}")
 
 add_boost_test(canvas_element
   SOURCES canvas_element_test.cpp

simgear/canvas/elements/CanvasElement.cxx

@@ -16,6 +16,8 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
+
 #include "CanvasElement.hxx"
 #include <simgear/canvas/Canvas.hxx>
 #include <simgear/canvas/CanvasEventVisitor.hxx>
@@ -29,10 +31,6 @@
 #include <osg/StateAttribute>
 #include <osg/Version>
 
-#include <boost/algorithm/string/predicate.hpp>
-#include <boost/foreach.hpp>
-#include <boost/make_shared.hpp>
-
 #include <cassert>
 #include <cmath>
 #include <cstring>
@@ -212,22 +210,22 @@ namespace canvas
   //----------------------------------------------------------------------------
   void Element::onDestroy()
   {
-    if( !_transform.valid() )
+    if( !_scene_group.valid() )
       return;
 
     // The transform node keeps a reference on this element, so ensure it is
     // deleted.
-    BOOST_FOREACH(osg::Group* parent, _transform->getParents())
+    for(osg::Group* parent: _scene_group->getParents())
     {
-      parent->removeChild(_transform.get());
+      parent->removeChild(_scene_group.get());
     }
 
     // Hide in case someone still holds a reference
     setVisible(false);
     removeListener();
 
-    _parent = 0;
-    _transform = 0;
+    _parent = nullptr;
+    _scene_group = nullptr;
   }
 
   //----------------------------------------------------------------------------
@@ -245,29 +243,8 @@ namespace canvas
   //----------------------------------------------------------------------------
   void Element::update(double dt)
   {
-    if( !isVisible() )
-      return;
-
-    // Trigger matrix update
-    getMatrix();
-
-    // Update bounding box on manual update (manual updates pass zero dt)
-    if( dt == 0 && _drawable )
-      _drawable->getBound();
-
-    if( (_attributes_dirty & BLEND_FUNC) && _transform.valid() )
-    {
-      parseBlendFunc(
-        _transform->getOrCreateStateSet(),
-        _node->getChild("blend-source"),
-        _node->getChild("blend-destination"),
-        _node->getChild("blend-source-rgb"),
-        _node->getChild("blend-destination-rgb"),
-        _node->getChild("blend-source-alpha"),
-        _node->getChild("blend-destination-alpha")
-      );
-      _attributes_dirty &= ~BLEND_FUNC;
-    }
+    if( isVisible() )
+      updateImpl(dt);
   }
 
   //----------------------------------------------------------------------------
@@ -339,7 +316,8 @@ namespace canvas
     if( listeners == _listener.end() )
       return false;
 
-    BOOST_FOREACH(EventListener const& listener, listeners->second)
+    for(auto const& listener: listeners->second)
+    {
       try
       {
         listener(event);
@@ -352,6 +330,7 @@ namespace canvas
           "canvas::Element: event handler error: '" << ex.what() << "'"
         );
       }
+    }
 
     return true;
   }
@@ -393,9 +372,9 @@ namespace canvas
       getBoundingBox()
 #endif
       .contains(osg::Vec3f(local_pos, 0));
-    else if( _transform.valid() )
+    else if( _scene_group.valid() )
       // ... for other elements, i.e. groups only a bounding sphere is available
-      return _transform->getBound().contains(osg::Vec3f(parent_pos, 0));
+      return _scene_group->getBound().contains(osg::Vec3f(parent_pos, 0));
     else
       return false;
   }
@@ -404,34 +383,32 @@ namespace canvas
   //----------------------------------------------------------------------------
   void Element::setVisible(bool visible)
   {
-    if( _transform.valid() )
+    if( _scene_group.valid() )
       // TODO check if we need another nodemask
-      _transform->setNodeMask(visible ? 0xffffffff : 0);
+      _scene_group->setNodeMask(visible ? 0xffffffff : 0);
   }
 
   //----------------------------------------------------------------------------
   bool Element::isVisible() const
   {
-    return _transform.valid() && _transform->getNodeMask() != 0;
+    return _scene_group.valid() && _scene_group->getNodeMask() != 0;
   }
 
   //----------------------------------------------------------------------------
-  osg::MatrixTransform* Element::getMatrixTransform()
+  osg::MatrixTransform* Element::getSceneGroup() const
   {
-    return _transform.get();
-  }
-
-  //----------------------------------------------------------------------------
-  osg::MatrixTransform const* Element::getMatrixTransform() const
-  {
-    return _transform.get();
+    return _scene_group.get();
   }
 
   //----------------------------------------------------------------------------
   osg::Vec2f Element::posToLocal(const osg::Vec2f& pos) const
   {
-    getMatrix();
-    const osg::Matrix& m = _transform->getInverseMatrix();
+    if( !_scene_group )
+      // TODO log warning?
+      return pos;
+
+    updateMatrix();
+    const osg::Matrix& m = _scene_group->getInverseMatrix();
     return osg::Vec2f
     (
       m(0, 0) * pos[0] + m(1, 0) * pos[1] + m(3, 0),
@@ -484,9 +461,6 @@ namespace canvas
     {
       if( child->getNameString() == NAME_TRANSFORM )
       {
-        if( !_transform.valid() )
-          return;
-
         if( child->getIndex() >= static_cast<int>(_transform_types.size()) )
         {
           SG_LOG
@@ -523,7 +497,7 @@ namespace canvas
     if( parent == _node )
     {
       const std::string& name = child->getNameString();
-      if( boost::starts_with(name, "data-") )
+      if( strutils::starts_with(name, "data-") )
         return;
       else if( StyleInfo const* style_info = getStyleInfo(name) )
       {
@@ -538,7 +512,7 @@ namespace canvas
       }
       else if( name == "update" )
         return update(0);
-      else if( boost::starts_with(name, "blend-") )
+      else if( strutils::starts_with(name, "blend-") )
         return (void)(_attributes_dirty |= BLEND_FUNC);
     }
     else if(   parent
@@ -562,6 +536,10 @@ namespace canvas
   //----------------------------------------------------------------------------
   void Element::setClip(const std::string& clip)
   {
+    if( !_scene_group )
+      // TODO warn?
+      return;
+
     osg::StateSet* ss = getOrCreateStateSet();
     if( !ss )
       return;
@@ -575,8 +553,8 @@ namespace canvas
 
     // TODO generalize CSS property parsing
     const std::string RECT("rect(");
-    if(    !boost::ends_with(clip, ")")
-        || !boost::starts_with(clip, RECT) )
+    if(    !strutils::ends_with(clip, ")")
+        || !strutils::starts_with(clip, RECT) )
     {
       SG_LOG(SG_GENERAL, SG_WARN, "Canvas: invalid clip: " << clip);
       return;
@@ -616,7 +594,7 @@ namespace canvas
     }
 
     if( !_scissor )
-      _scissor = new RelativeScissor(_transform.get());
+      _scissor = new RelativeScissor(_scene_group.get());
 
     // <top>, <right>, <bottom>, <left>
     _scissor->x() = values[3];
@@ -640,6 +618,27 @@ namespace canvas
       _scissor->_coord_reference = rf;
   }
 
+  //----------------------------------------------------------------------------
+  void Element::setRotation(unsigned int index, double r)
+  {
+    _node->getChild(NAME_TRANSFORM, index, true)->setDoubleValue("rot", r);
+  }
+
+  //----------------------------------------------------------------------------
+  void Element::setTranslation(unsigned int index, double x, double y)
+  {
+    SGPropertyNode* tf = _node->getChild(NAME_TRANSFORM, index, true);
+    tf->getChild("t", 0, true)->setDoubleValue(x);
+    tf->getChild("t", 1, true)->setDoubleValue(y);
+  }
+
+  //----------------------------------------------------------------------------
+  void Element::setTransformEnabled(unsigned int index, bool enabled)
+  {
+    SGPropertyNode* tf = _node->getChild(NAME_TRANSFORM, index, true);
+    tf->setBoolValue("enabled", enabled);
+  }
+
   //----------------------------------------------------------------------------
   osg::BoundingBox Element::getBoundingBox() const
   {
@@ -652,8 +651,8 @@ namespace canvas
 
     osg::BoundingBox bb;
 
-    if( _transform.valid() )
-      bb.expandBy(_transform->getBound());
+    if( _scene_group.valid() )
+      bb.expandBy( _scene_group->getBound() );
 
     return bb;
   }
@@ -687,70 +686,11 @@ namespace canvas
   //----------------------------------------------------------------------------
   osg::Matrix Element::getMatrix() const
   {
-    if( !_transform )
+    if( !_scene_group )
       return osg::Matrix::identity();
 
-    if( !(_attributes_dirty & TRANSFORM) )
-      return _transform->getMatrix();
-
-    osg::Matrix m;
-    for( size_t i = 0; i < _transform_types.size(); ++i )
-    {
-      // Skip unused indizes...
-      if( _transform_types[i] == TT_NONE )
-        continue;
-
-      SGPropertyNode* tf_node = _node->getChild("tf", i, true);
-
-      // Build up the matrix representation of the current transform node
-      osg::Matrix tf;
-      switch( _transform_types[i] )
-      {
-        case TT_MATRIX:
-          tf = osg::Matrix( tf_node->getDoubleValue("m[0]", 1),
-                            tf_node->getDoubleValue("m[1]", 0),
-                            0,
-                            tf_node->getDoubleValue("m[6]", 0),
-
-                            tf_node->getDoubleValue("m[2]", 0),
-                            tf_node->getDoubleValue("m[3]", 1),
-                            0,
-                            tf_node->getDoubleValue("m[7]", 0),
-
-                            0,
-                            0,
-                            1,
-                            0,
-
-                            tf_node->getDoubleValue("m[4]", 0),
-                            tf_node->getDoubleValue("m[5]", 0),
-                            0,
-                            tf_node->getDoubleValue("m[8]", 1) );
-          break;
-        case TT_TRANSLATE:
-          tf.makeTranslate( osg::Vec3f( tf_node->getDoubleValue("t[0]", 0),
-                                        tf_node->getDoubleValue("t[1]", 0),
-                                        0 ) );
-          break;
-        case TT_ROTATE:
-          tf.makeRotate( tf_node->getDoubleValue("rot", 0), 0, 0, 1 );
-          break;
-        case TT_SCALE:
-        {
-          float sx = tf_node->getDoubleValue("s[0]", 1);
-          // sy defaults to sx...
-          tf.makeScale( sx, tf_node->getDoubleValue("s[1]", sx), 1 );
-          break;
-        }
-        default:
-          break;
-      }
-      m.postMult( tf );
-    }
-    _transform->setMatrix(m);
-    _attributes_dirty &= ~TRANSFORM;
-
-    return m;
+    updateMatrix();
+    return _scene_group->getMatrix();
   }
 
   //----------------------------------------------------------------------------
@@ -764,11 +704,8 @@ namespace canvas
     PropertyBasedElement(node),
     _canvas( canvas ),
     _parent( parent ),
-    _attributes_dirty( 0 ),
-    _transform( new osg::MatrixTransform ),
-    _style( parent_style ),
-    _scissor( 0 ),
-    _drawable( 0 )
+    _scene_group( new osg::MatrixTransform ),
+    _style( parent_style )
   {
     staticInit();
 
@@ -780,15 +717,15 @@ namespace canvas
     );
 
     // Ensure elements are drawn in order they appear in the element tree
-    _transform->getOrCreateStateSet()
-              ->setRenderBinDetails
-              (
-                0,
-                "PreOrderBin",
-                osg::StateSet::OVERRIDE_RENDERBIN_DETAILS
-              );
+    _scene_group
+      ->getOrCreateStateSet()
+      ->setRenderBinDetails(
+        0,
+        "PreOrderBin",
+        osg::StateSet::OVERRIDE_RENDERBIN_DETAILS
+      );
 
-    _transform->setUserData( new OSGUserData(this) );
+    _scene_group->setUserData( new OSGUserData(this) );
   }
 
   //----------------------------------------------------------------------------
@@ -876,11 +813,21 @@ namespace canvas
   void Element::setDrawable( osg::Drawable* drawable )
   {
     _drawable = drawable;
-    assert( _drawable );
 
-    osg::ref_ptr<osg::Geode> geode = new osg::Geode;
+    if( !_drawable )
+    {
+      SG_LOG(SG_GL, SG_WARN, "canvas::Element::setDrawable: NULL drawable");
+      return;
+    }
+    if( !_scene_group )
+    {
+      SG_LOG(SG_GL, SG_WARN, "canvas::Element::setDrawable: NULL scenegroup");
+      return;
+    }
+
+    auto geode = new osg::Geode;
     geode->addDrawable(_drawable);
-    _transform->addChild(geode);
+    _scene_group->addChild(geode);
   }
 
   //----------------------------------------------------------------------------
@@ -888,18 +835,109 @@ namespace canvas
   {
     if( _drawable.valid() )
       return _drawable->getOrCreateStateSet();
-    if( _transform.valid() )
-      return _transform->getOrCreateStateSet();
-
-    return 0;
+    else if( _scene_group.valid() )
+      return _scene_group->getOrCreateStateSet();
+    else
+      return nullptr;
   }
 
   //----------------------------------------------------------------------------
   void Element::setupStyle()
   {
-    BOOST_FOREACH( Style::value_type style, _style )
+    for(auto const& style: _style)
       setStyle(style.second);
   }
 
+  //----------------------------------------------------------------------------
+  void Element::updateMatrix() const
+  {
+    if( !(_attributes_dirty & TRANSFORM) || !_scene_group )
+      return;
+
+    osg::Matrix m;
+    for( size_t i = 0; i < _transform_types.size(); ++i )
+    {
+      // Skip unused indizes...
+      if( _transform_types[i] == TT_NONE )
+        continue;
+
+      SGPropertyNode* tf_node = _node->getChild("tf", i, true);
+      if (!tf_node->getBoolValue("enabled", true)) {
+        continue; // skip disabled transforms
+      }
+
+      // Build up the matrix representation of the current transform node
+      osg::Matrix tf;
+      switch( _transform_types[i] )
+      {
+        case TT_MATRIX:
+          tf = osg::Matrix( tf_node->getDoubleValue("m[0]", 1),
+                            tf_node->getDoubleValue("m[1]", 0),
+                            0,
+                            tf_node->getDoubleValue("m[6]", 0),
+
+                            tf_node->getDoubleValue("m[2]", 0),
+                            tf_node->getDoubleValue("m[3]", 1),
+                            0,
+                            tf_node->getDoubleValue("m[7]", 0),
+
+                            0,
+                            0,
+                            1,
+                            0,
+
+                            tf_node->getDoubleValue("m[4]", 0),
+                            tf_node->getDoubleValue("m[5]", 0),
+                            0,
+                            tf_node->getDoubleValue("m[8]", 1) );
+          break;
+        case TT_TRANSLATE:
+          tf.makeTranslate( osg::Vec3f( tf_node->getDoubleValue("t[0]", 0),
+                                        tf_node->getDoubleValue("t[1]", 0),
+                                        0 ) );
+          break;
+        case TT_ROTATE:
+          tf.makeRotate( tf_node->getDoubleValue("rot", 0), 0, 0, 1 );
+          break;
+        case TT_SCALE:
+        {
+          float sx = tf_node->getDoubleValue("s[0]", 1);
+          // sy defaults to sx...
+          tf.makeScale( sx, tf_node->getDoubleValue("s[1]", sx), 1 );
+          break;
+        }
+        default:
+          break;
+      }
+      m.postMult( tf );
+    }
+    _scene_group->setMatrix(m);
+    _attributes_dirty &= ~TRANSFORM;
+  }
+
+  //----------------------------------------------------------------------------
+  void Element::updateImpl(double dt)
+  {
+    updateMatrix();
+
+    // Update bounding box on manual update (manual updates pass zero dt)
+    if( dt == 0 && _drawable )
+      _drawable->getBound();
+
+    if( (_attributes_dirty & BLEND_FUNC) )
+    {
+      parseBlendFunc(
+        _scene_group->getOrCreateStateSet(),
+        _node->getChild("blend-source"),
+        _node->getChild("blend-destination"),
+        _node->getChild("blend-source-rgb"),
+        _node->getChild("blend-destination-rgb"),
+        _node->getChild("blend-source-alpha"),
+        _node->getChild("blend-destination-alpha")
+      );
+      _attributes_dirty &= ~BLEND_FUNC;
+    }
+  }
+
 } // namespace canvas
 } // namespace simgear

simgear/canvas/elements/CanvasElement.hxx

@@ -24,13 +24,13 @@
 #include <simgear/canvas/CanvasEvent.hxx>
 #include <simgear/props/PropertyBasedElement.hxx>
 #include <simgear/misc/stdint.hxx> // for uint32_t
+#include <simgear/std/type_traits.hxx>
 
 #include <osg/BoundingBox>
 #include <osg/MatrixTransform>
 
 #include <boost/bind.hpp>
 #include <boost/function.hpp>
-#include <boost/type_traits/is_base_of.hpp>
 
 namespace osg
 {
@@ -49,6 +49,7 @@ namespace canvas
     public PropertyBasedElement
   {
     public:
+      using SceneGroupWeakPtr = osg::observer_ptr<osg::MatrixTransform>;
 
       /**
        * Store pointer to window as user data
@@ -142,8 +143,11 @@ namespace canvas
        */
       virtual bool isVisible() const;
 
-      osg::MatrixTransform* getMatrixTransform();
-      osg::MatrixTransform const* getMatrixTransform() const;
+      /**
+       * Get the according group in the OSG scene graph
+       */
+      // TODO ref_ptr
+      osg::MatrixTransform* getSceneGroup() const;
 
       /**
        * Transform position to local coordinages.
@@ -172,6 +176,22 @@ namespace canvas
        */
       void setClipFrame(ReferenceFrame rf);
 
+      /**
+       *
+       */
+      void setRotation(unsigned int index, double r);
+
+      /**
+       *
+       */
+      void setTranslation(unsigned int index, double x, double y);
+
+      /**
+       *
+       *
+       */
+      void setTransformEnabled(unsigned int index, bool enabled);
+
       /**
        * Get bounding box (may not be as tight as bounding box returned by
        * #getTightBoundingBox)
@@ -201,13 +221,14 @@ namespace canvas
        */
       template<typename Derived>
       static
-      typename boost::enable_if<
-        boost::is_base_of<Element, Derived>,
+      std::enable_if_t<
+        std::is_base_of<Element, Derived>::value,
         ElementPtr
-      >::type create( const CanvasWeakPtr& canvas,
-                      const SGPropertyNode_ptr& node,
-                      const Style& style = Style(),
-                      Element* parent = NULL )
+      >
+      create( const CanvasWeakPtr& canvas,
+              const SGPropertyNode_ptr& node,
+              const Style& style = Style(),
+              Element* parent = NULL )
       {
         return ElementPtr( new Derived(canvas, node, style, parent) );
       }
@@ -235,13 +256,13 @@ namespace canvas
       CanvasWeakPtr   _canvas;
       ElementWeakPtr  _parent;
 
-      mutable uint32_t _attributes_dirty;
+      mutable uint32_t _attributes_dirty = 0;
 
-      osg::observer_ptr<osg::MatrixTransform> _transform;
-      std::vector<TransformType>              _transform_types;
+      SceneGroupWeakPtr             _scene_group;
+      std::vector<TransformType>    _transform_types;
 
       Style             _style;
-      RelativeScissor  *_scissor;
+      RelativeScissor  *_scissor = nullptr;
 
       typedef std::vector<EventListener> Listener;
       typedef std::map<int, Listener> ListenerMap;
@@ -568,6 +589,10 @@ namespace canvas
 
       void setupStyle();
 
+      void updateMatrix() const;
+
+      virtual void updateImpl(double dt);
+
     private:
 
       osg::ref_ptr<osg::Drawable> _drawable;

simgear/canvas/elements/CanvasGroup.cxx

@@ -16,18 +16,17 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
+
 #include "CanvasGroup.hxx"
 #include "CanvasImage.hxx"
 #include "CanvasMap.hxx"
 #include "CanvasPath.hxx"
 #include "CanvasText.hxx"
+
 #include <simgear/canvas/CanvasEventVisitor.hxx>
 #include <simgear/canvas/events/MouseEvent.hxx>
 
-#include <boost/bind.hpp>
-#include <boost/foreach.hpp>
-#include <boost/lambda/core.hpp>
-
 namespace simgear
 {
 namespace canvas
@@ -46,7 +45,7 @@ namespace canvas
   ElementFactories Group::_child_factories;
   const std::string Group::TYPE_NAME = "group";
 
-  void warnTransformExpired(const char* member_name)
+  void warnSceneGroupExpired(const char* member_name)
   {
     SG_LOG( SG_GENERAL,
             SG_WARN,
@@ -133,63 +132,57 @@ namespace canvas
   //----------------------------------------------------------------------------
   ElementPtr Group::getElementById(const std::string& id)
   {
-    if( !_transform.valid() )
+    if( !_scene_group.valid() )
     {
-      warnTransformExpired("getElementById");
-      return ElementPtr();
+      warnSceneGroupExpired("getElementById");
+      return {};
     }
 
-    std::vector<GroupPtr> groups;
-    for(size_t i = 0; i < _transform->getNumChildren(); ++i)
+    // TODO check search algorithm. Not completely breadth-first and might be
+    //      possible with using less dynamic memory
+    std::vector<GroupPtr> child_groups;
+    for(size_t i = 0; i < _scene_group->getNumChildren(); ++i)
     {
       const ElementPtr& el = getChildByIndex(i);
       if( el->get<std::string>("id") == id )
         return el;
 
-      Group* group = dynamic_cast<Group*>(el.get());
-      if( group )
-        groups.push_back(group);
+      if( Group* child_group = dynamic_cast<Group*>(el.get()) )
+        child_groups.push_back(child_group);
     }
 
-    BOOST_FOREACH( GroupPtr group, groups )
+    for(auto group: child_groups)
     {
-      ElementPtr el = group->getElementById(id);
-      if( el )
+      if( ElementPtr el = group->getElementById(id) )
         return el;
     }
 
-    return ElementPtr();
+    return {};
   }
 
   //----------------------------------------------------------------------------
   void Group::clearEventListener()
   {
-    if( !_transform.valid() )
-      return warnTransformExpired("clearEventListener");
-
-    for(size_t i = 0; i < _transform->getNumChildren(); ++i)
-      getChildByIndex(i)->clearEventListener();
-
     Element::clearEventListener();
-  }
 
-  //----------------------------------------------------------------------------
-  void Group::update(double dt)
-  {
-    for(size_t i = 0; i < _transform->getNumChildren(); ++i)
-      getChildByIndex(i)->update(dt);
+    if( !_scene_group.valid() )
+      return warnSceneGroupExpired("clearEventListener");
 
-    Element::update(dt);
+    for(size_t i = 0; i < _scene_group->getNumChildren(); ++i)
+      getChildByIndex(i)->clearEventListener();
   }
 
   //----------------------------------------------------------------------------
   bool Group::traverse(EventVisitor& visitor)
   {
-    // Iterate in reverse order as last child is displayed on top
-    for(size_t i = _transform->getNumChildren(); i --> 0;)
+    if( _scene_group.valid() )
     {
-      if( getChildByIndex(i)->accept(visitor) )
-        return true;
+      // Iterate in reverse order as last child is displayed on top
+      for(size_t i = _scene_group->getNumChildren(); i --> 0;)
+      {
+        if( getChildByIndex(i)->accept(visitor) )
+          return true;
+      }
     }
     return false;
   }
@@ -204,13 +197,13 @@ namespace canvas
     bool handled = setStyleImpl(style, style_info);
     if( style_info->inheritable )
     {
-      if( !_transform.valid() )
+      if( !_scene_group.valid() )
       {
-        warnTransformExpired("setStyle");
+        warnSceneGroupExpired("setStyle");
         return false;
       }
 
-      for(size_t i = 0; i < _transform->getNumChildren(); ++i)
+      for(size_t i = 0; i < _scene_group->getNumChildren(); ++i)
         handled |= getChildByIndex(i)->setStyle(style, style_info);
     }
 
@@ -220,26 +213,20 @@ namespace canvas
   //----------------------------------------------------------------------------
   osg::BoundingBox Group::getTransformedBounds(const osg::Matrix& m) const
   {
-    osg::BoundingBox bb;
-    if( !_transform.valid() )
+    if( !_scene_group.valid() )
     {
-      warnTransformExpired("getTransformedBounds");
-      return bb;
+      warnSceneGroupExpired("getTransformedBounds");
+      return {};
     }
 
-    for(size_t i = 0; i < _transform->getNumChildren(); ++i)
+    osg::BoundingBox bb;
+    for(size_t i = 0; i < _scene_group->getNumChildren(); ++i)
     {
-      const ElementPtr& child = getChildByIndex(i);
-      if( !child->getMatrixTransform()->getNodeMask() )
+      auto child = getChildByIndex(i);
+      if( !child || !child->isVisible() )
         continue;
 
-      bb.expandBy
-      (
-        child->getTransformedBounds
-        (
-          child->getMatrixTransform()->getMatrix() * m
-        )
-      );
+      bb.expandBy( child->getTransformedBounds(child->getMatrix() * m) );
     }
 
     return bb;
@@ -255,6 +242,15 @@ namespace canvas
     return ElementFactory();
   }
 
+  //----------------------------------------------------------------------------
+  void Group::updateImpl(double dt)
+  {
+    Element::updateImpl(dt);
+
+    for(size_t i = 0; i < _scene_group->getNumChildren(); ++i)
+      getChildByIndex(i)->update(dt);
+  }
+
   //----------------------------------------------------------------------------
   void Group::childAdded(SGPropertyNode* child)
   {
@@ -264,13 +260,13 @@ namespace canvas
     ElementFactory child_factory = getChildFactory( child->getNameString() );
     if( child_factory )
     {
-      if( !_transform.valid() )
-        return warnTransformExpired("childAdded");
+      if( !_scene_group.valid() )
+        return warnSceneGroupExpired("childAdded");
 
       ElementPtr element = child_factory(_canvas, child, _style, this);
 
       // Add to osg scene graph...
-      _transform->addChild( element->getMatrixTransform() );
+      _scene_group->addChild(element->getSceneGroup());
 
       // ...and ensure correct ordering
       handleZIndexChanged(element);
@@ -291,7 +287,7 @@ namespace canvas
 
     if( getChildFactory(node->getNameString()) )
     {
-      if( !_transform.valid() )
+      if( !_scene_group.valid() )
         // If transform is destroyed also all children are destroyed, so we can
         // not do anything here.
         return;
@@ -321,7 +317,7 @@ namespace canvas
   void Group::childChanged(SGPropertyNode* node)
   {
     SGPropertyNode* parent = node->getParent();
-    SGPropertyNode* grand_parent = parent ? parent->getParent() : NULL;
+    SGPropertyNode* grand_parent = parent ? parent->getParent() : nullptr;
 
     if(    grand_parent == _node
         && node->getNameString() == "z-index" )
@@ -331,16 +327,18 @@ namespace canvas
   //----------------------------------------------------------------------------
   void Group::handleZIndexChanged(ElementPtr child, int z_index)
   {
-    if( !child || !_transform.valid() )
+    if( !child || !_scene_group.valid() )
       return;
 
-    osg::ref_ptr<osg::MatrixTransform> tf = child->getMatrixTransform();
-    size_t index = _transform->getChildIndex(tf),
+    // Keep reference to prevent deleting while removing and re-inserting later
+    osg::ref_ptr<osg::MatrixTransform> tf = child->getSceneGroup();
+
+    size_t index = _scene_group->getChildIndex(tf),
            index_new = index;
 
     for(;; ++index_new)
     {
-      if( index_new + 1 == _transform->getNumChildren() )
+      if( index_new + 1 == _scene_group->getNumChildren() )
         break;
 
       // Move to end of block with same index (= move upwards until the next
@@ -367,13 +365,13 @@ namespace canvas
         return;
     }
 
-    _transform->removeChild(index);
-    _transform->insertChild(index_new, tf);
+    _scene_group->removeChild(index);
+    _scene_group->insertChild(index_new, tf);
 
     SG_LOG
     (
       SG_GENERAL,
-      SG_INFO,
+      SG_DEBUG,
       "canvas::Group: Moved element " << index << " to position " << index_new
     );
   }
@@ -381,24 +379,27 @@ namespace canvas
   //----------------------------------------------------------------------------
   ElementPtr Group::getChildByIndex(size_t index) const
   {
-    assert(_transform.valid());
-    OSGUserData* ud =
-      static_cast<OSGUserData*>(_transform->getChild(index)->getUserData());
-    assert(ud);
-    return ud->element;
+    assert( _scene_group.valid() );
+
+    auto child = _scene_group->getChild(index);
+    if( !child )
+      return {};
+
+    auto ud = static_cast<OSGUserData*>(child->getUserData());
+    return ud ? ud->element : ElementPtr();
   }
 
   //----------------------------------------------------------------------------
   ElementPtr Group::findChild( const SGPropertyNode* node,
                                const std::string& id ) const
   {
-    if( !_transform.valid() )
+    if( !_scene_group.valid() )
     {
-      warnTransformExpired("findChild");
-      return ElementPtr();
+      warnSceneGroupExpired("findChild");
+      return {};
     }
 
-    for(size_t i = 0; i < _transform->getNumChildren(); ++i)
+    for(size_t i = 0; i < _scene_group->getNumChildren(); ++i)
     {
       ElementPtr el = getChildByIndex(i);
 
@@ -414,7 +415,7 @@ namespace canvas
       }
     }
 
-    return ElementPtr();
+    return {};
   }
 
 } // namespace canvas

simgear/canvas/elements/CanvasGroup.hxx

@@ -88,8 +88,6 @@ namespace canvas
 
       virtual void clearEventListener();
 
-      virtual void update(double dt);
-
       virtual bool traverse(EventVisitor& visitor);
 
       virtual bool setStyle( const SGPropertyNode* child,
@@ -107,6 +105,8 @@ namespace canvas
        */
       virtual ElementFactory getChildFactory(const std::string& type) const;
 
+      virtual void updateImpl(double dt);
+
       virtual void childAdded(SGPropertyNode * child);
       virtual void childRemoved(SGPropertyNode * child);
       virtual void childChanged(SGPropertyNode * child);

simgear/canvas/elements/CanvasImage.cxx

@@ -16,6 +16,8 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
+
 #include "CanvasImage.hxx"
 
 #include <simgear/canvas/Canvas.hxx>
@@ -115,9 +117,7 @@ namespace canvas
                 ElementWeakPtr parent ):
     Element(canvas, node, parent_style, parent),
     _texture(new osg::Texture2D),
-    _node_src_rect( node->getNode("source", 0, true) ),
-    _src_rect(0,0),
-    _region(0,0)
+    _node_src_rect( node->getNode("source", 0, true) )
   {
     staticInit();
 
@@ -155,22 +155,207 @@ namespace canvas
   //----------------------------------------------------------------------------
   Image::~Image()
   {
-      if( _http_request ) {
-          Canvas::getSystemAdapter()->getHTTPClient()->cancelRequest(_http_request, "image destroyed");
-      }
+    if( _http_request )
+    {
+      Canvas::getSystemAdapter()
+        ->getHTTPClient()
+        ->cancelRequest(_http_request, "image destroyed");
+    }
   }
 
   //----------------------------------------------------------------------------
-  void Image::update(double dt)
+  void Image::valueChanged(SGPropertyNode* child)
   {
-    Element::update(dt);
+    // If the image is switched from invisible to visible, and it shows a
+    // canvas, we need to delay showing it by one frame to ensure the canvas is
+    // updated before the image is displayed.
+    //
+    // As canvas::Element handles and filters changes to the "visible" property
+    // we can not check this in Image::childChanged but instead have to override
+    // Element::valueChanged.
+    if(    !isVisible()
+        && child->getParent() == _node
+        && child->getNameString() == "visible"
+        && child->getBoolValue() )
+    {
+      CullCallback* cb =
+#if OSG_VERSION_LESS_THAN(3,3,2)
+        static_cast<CullCallback*>
+#else
+        dynamic_cast<CullCallback*>
+#endif
+        ( _geom->getCullCallback() );
+
+      if( cb )
+        cb->cullNextFrame();
+    }
+
+    Element::valueChanged(child);
+  }
+
+  //----------------------------------------------------------------------------
+  void Image::setSrcCanvas(CanvasPtr canvas)
+  {
+    CanvasPtr src_canvas = _src_canvas.lock(),
+              self_canvas = _canvas.lock();
+
+    if( src_canvas )
+      src_canvas->removeParentCanvas(self_canvas);
+    if( self_canvas )
+      self_canvas->removeChildCanvas(src_canvas);
+
+    _src_canvas = src_canvas = canvas;
+    _attributes_dirty |= SRC_CANVAS;
+    _geom->setCullCallback(canvas ? new CullCallback(canvas) : 0);
+
+    if( src_canvas )
+    {
+      setupDefaultDimensions();
+
+      if( self_canvas )
+      {
+        self_canvas->addChildCanvas(src_canvas);
+        src_canvas->addParentCanvas(self_canvas);
+      }
+    }
+  }
+
+  //----------------------------------------------------------------------------
+  CanvasWeakPtr Image::getSrcCanvas() const
+  {
+    return _src_canvas;
+  }
+
+  //----------------------------------------------------------------------------
+  void Image::setImage(osg::ref_ptr<osg::Image> img)
+  {
+    // remove canvas...
+    setSrcCanvas( CanvasPtr() );
+
+    _texture->setResizeNonPowerOfTwoHint(false);
+    _texture->setImage(img);
+    _texture->setWrap(osg::Texture::WRAP_S, osg::Texture::REPEAT);
+    _texture->setWrap(osg::Texture::WRAP_T, osg::Texture::REPEAT);
+    _geom->getOrCreateStateSet()
+         ->setTextureAttributeAndModes(0, _texture);
+
+    if( img )
+      setupDefaultDimensions();
+  }
+
+  //----------------------------------------------------------------------------
+  void Image::setFill(const std::string& fill)
+  {
+    osg::Vec4 color(1,1,1,1);
+    if(    !fill.empty() // If no color is given default to white
+        && !parseColor(fill, color) )
+      return;
+    setFill(color);
+  }
+
+    //----------------------------------------------------------------------------
+    void Image::setFill(const osg::Vec4& color)
+    {
+        _colors->front() = color;
+        _colors->dirty();
+    }
+
+
+  //----------------------------------------------------------------------------
+  void Image::setOutset(const std::string& outset)
+  {
+    _outset = CSSBorder::parse(outset);
+    _attributes_dirty |= DEST_SIZE;
+  }
+
+  //----------------------------------------------------------------------------
+  void Image::setPreserveAspectRatio(const std::string& scale)
+  {
+    _preserve_aspect_ratio = SVGpreserveAspectRatio::parse(scale);
+    _attributes_dirty |= SRC_RECT;
+  }
+
+  //----------------------------------------------------------------------------
+  void Image::setSourceRect(const SGRect<float>& sourceRect)
+  {
+      _attributes_dirty |= SRC_RECT;
+      _src_rect = sourceRect;
+  }
+
+  //----------------------------------------------------------------------------
+  void Image::setSlice(const std::string& slice)
+  {
+    _slice = CSSBorder::parse(slice);
+    _attributes_dirty |= SRC_RECT | DEST_SIZE;
+  }
+
+  //----------------------------------------------------------------------------
+  void Image::setSliceWidth(const std::string& width)
+  {
+    _slice_width = CSSBorder::parse(width);
+    _attributes_dirty |= DEST_SIZE;
+  }
+
+  //----------------------------------------------------------------------------
+  const SGRect<float>& Image::getRegion() const
+  {
+    return _region;
+  }
+
+  //----------------------------------------------------------------------------
+  bool Image::handleEvent(const EventPtr& event)
+  {
+    bool handled = Element::handleEvent(event);
+
+    CanvasPtr src_canvas = _src_canvas.lock();
+    if( !src_canvas )
+      return handled;
+
+    if( MouseEventPtr mouse_event = dynamic_cast<MouseEvent*>(event.get()) )
+    {
+      mouse_event.reset( new MouseEvent(*mouse_event) );
+
+      mouse_event->client_pos = mouse_event->local_pos
+                              - toOsg(_region.getMin());
+
+      osg::Vec2f size(_region.width(), _region.height());
+      if( _outset.isValid() )
+      {
+        CSSBorder::Offsets outset =
+          _outset.getAbsOffsets(getTextureDimensions());
+
+        mouse_event->client_pos += osg::Vec2f(outset.l, outset.t);
+        size.x() += outset.l + outset.r;
+        size.y() += outset.t + outset.b;
+      }
+
+      // Scale event pos according to canvas view size vs. displayed/screen size
+      mouse_event->client_pos.x() *= src_canvas->getViewWidth() / size.x();
+      mouse_event->client_pos.y() *= src_canvas->getViewHeight()/ size.y();
+      mouse_event->local_pos = mouse_event->client_pos;
+
+      handled |= src_canvas->handleMouseEvent(mouse_event);
+    }
+    else if( KeyboardEventPtr keyboard_event =
+               dynamic_cast<KeyboardEvent*>(event.get()) )
+    {
+      handled |= src_canvas->handleKeyboardEvent(keyboard_event);
+    }
+
+    return handled;
+  }
+
+  //----------------------------------------------------------------------------
+  void Image::updateImpl(double dt)
+  {
+    Element::updateImpl(dt);
 
     osg::Texture2D* texture = dynamic_cast<osg::Texture2D*>
     (
       _geom->getOrCreateStateSet()
            ->getTextureAttribute(0, osg::StateAttribute::TEXTURE)
     );
-    simgear::canvas::CanvasPtr canvas = _src_canvas.lock();
+    auto canvas = _src_canvas.lock();
 
     if(    (_attributes_dirty & SRC_CANVAS)
            // check if texture has changed (eg. due to resizing)
@@ -400,175 +585,6 @@ namespace canvas
     }
   }
 
-  //----------------------------------------------------------------------------
-  void Image::valueChanged(SGPropertyNode* child)
-  {
-    // If the image is switched from invisible to visible, and it shows a
-    // canvas, we need to delay showing it by one frame to ensure the canvas is
-    // updated before the image is displayed.
-    //
-    // As canvas::Element handles and filters changes to the "visible" property
-    // we can not check this in Image::childChanged but instead have to override
-    // Element::valueChanged.
-    if(    !isVisible()
-        && child->getParent() == _node
-        && child->getNameString() == "visible"
-        && child->getBoolValue() )
-    {
-      CullCallback* cb =
-#if OSG_VERSION_LESS_THAN(3,3,2)
-        static_cast<CullCallback*>
-#else
-        dynamic_cast<CullCallback*>
-#endif
-        ( _geom->getCullCallback() );
-
-      if( cb )
-        cb->cullNextFrame();
-    }
-
-    Element::valueChanged(child);
-  }
-
-  //----------------------------------------------------------------------------
-  void Image::setSrcCanvas(CanvasPtr canvas)
-  {
-    CanvasPtr src_canvas = _src_canvas.lock(),
-              self_canvas = _canvas.lock();
-
-    if( src_canvas )
-      src_canvas->removeParentCanvas(self_canvas);
-    if( self_canvas )
-      self_canvas->removeChildCanvas(src_canvas);
-
-    _src_canvas = src_canvas = canvas;
-    _attributes_dirty |= SRC_CANVAS;
-    _geom->setCullCallback(canvas ? new CullCallback(canvas) : 0);
-
-    if( src_canvas )
-    {
-      setupDefaultDimensions();
-
-      if( self_canvas )
-      {
-        self_canvas->addChildCanvas(src_canvas);
-        src_canvas->addParentCanvas(self_canvas);
-      }
-    }
-  }
-
-  //----------------------------------------------------------------------------
-  CanvasWeakPtr Image::getSrcCanvas() const
-  {
-    return _src_canvas;
-  }
-
-  //----------------------------------------------------------------------------
-  void Image::setImage(osg::ref_ptr<osg::Image> img)
-  {
-    // remove canvas...
-    setSrcCanvas( CanvasPtr() );
-
-    _texture->setResizeNonPowerOfTwoHint(false);
-    _texture->setImage(img);
-    _texture->setWrap(osg::Texture::WRAP_S, osg::Texture::REPEAT);
-    _texture->setWrap(osg::Texture::WRAP_T, osg::Texture::REPEAT);
-    _geom->getOrCreateStateSet()
-         ->setTextureAttributeAndModes(0, _texture);
-
-    if( img )
-      setupDefaultDimensions();
-  }
-
-  //----------------------------------------------------------------------------
-  void Image::setFill(const std::string& fill)
-  {
-    osg::Vec4 color(1,1,1,1);
-    if(    !fill.empty() // If no color is given default to white
-        && !parseColor(fill, color) )
-      return;
-
-    _colors->front() = color;
-    _colors->dirty();
-  }
-
-  //----------------------------------------------------------------------------
-  void Image::setOutset(const std::string& outset)
-  {
-    _outset = CSSBorder::parse(outset);
-    _attributes_dirty |= DEST_SIZE;
-  }
-
-  //----------------------------------------------------------------------------
-  void Image::setPreserveAspectRatio(const std::string& scale)
-  {
-    _preserve_aspect_ratio = SVGpreserveAspectRatio::parse(scale);
-    _attributes_dirty |= SRC_RECT;
-  }
-
-  //----------------------------------------------------------------------------
-  void Image::setSlice(const std::string& slice)
-  {
-    _slice = CSSBorder::parse(slice);
-    _attributes_dirty |= SRC_RECT | DEST_SIZE;
-  }
-
-  //----------------------------------------------------------------------------
-  void Image::setSliceWidth(const std::string& width)
-  {
-    _slice_width = CSSBorder::parse(width);
-    _attributes_dirty |= DEST_SIZE;
-  }
-
-  //----------------------------------------------------------------------------
-  const SGRect<float>& Image::getRegion() const
-  {
-    return _region;
-  }
-
-  //----------------------------------------------------------------------------
-  bool Image::handleEvent(const EventPtr& event)
-  {
-    bool handled = Element::handleEvent(event);
-
-    CanvasPtr src_canvas = _src_canvas.lock();
-    if( !src_canvas )
-      return handled;
-
-    if( MouseEventPtr mouse_event = dynamic_cast<MouseEvent*>(event.get()) )
-    {
-      mouse_event.reset( new MouseEvent(*mouse_event) );
-
-      mouse_event->client_pos = mouse_event->local_pos
-                              - toOsg(_region.getMin());
-
-      osg::Vec2f size(_region.width(), _region.height());
-      if( _outset.isValid() )
-      {
-        CSSBorder::Offsets outset =
-          _outset.getAbsOffsets(getTextureDimensions());
-
-        mouse_event->client_pos += osg::Vec2f(outset.l, outset.t);
-        size.x() += outset.l + outset.r;
-        size.y() += outset.t + outset.b;
-      }
-
-      // Scale event pos according to canvas view size vs. displayed/screen size
-      mouse_event->client_pos.x() *= src_canvas->getViewWidth() / size.x();
-      mouse_event->client_pos.y() *= src_canvas->getViewHeight()/ size.y();
-      mouse_event->local_pos = mouse_event->client_pos;
-
-      handled |= src_canvas->handleMouseEvent(mouse_event);
-    }
-    else if( KeyboardEventPtr keyboard_event =
-               dynamic_cast<KeyboardEvent*>(event.get()) )
-    {
-      handled |= src_canvas->handleKeyboardEvent(keyboard_event);
-    }
-
-    return handled;
-  }
-
   //----------------------------------------------------------------------------
   void Image::childChanged(SGPropertyNode* child)
   {
@@ -619,7 +635,9 @@ namespace canvas
       // Abort pending request
       if( _http_request )
       {
-          Canvas::getSystemAdapter()->getHTTPClient()->cancelRequest(_http_request, "setting new image");
+        Canvas::getSystemAdapter()
+          ->getHTTPClient()
+          ->cancelRequest(_http_request, "setting new image");
         _http_request.reset();
       }
 

simgear/canvas/elements/CanvasImage.hxx

@@ -53,7 +53,6 @@ namespace canvas
              ElementWeakPtr parent = 0 );
       virtual ~Image();
 
-      virtual void update(double dt);
       virtual void valueChanged(SGPropertyNode* child);
 
       void setSrcCanvas(CanvasPtr canvas);
@@ -61,6 +60,7 @@ namespace canvas
 
       void setImage(osg::ref_ptr<osg::Image> img);
       void setFill(const std::string& fill);
+      void setFill(const osg::Vec4& color);
 
       /**
        * @see http://www.w3.org/TR/css3-background/#border-image-outset
@@ -95,8 +95,12 @@ namespace canvas
 
       bool handleEvent(const EventPtr& event);
 
-    protected:
+      /**
+       *
+       */
+      void setSourceRect(const SGRect<float>& sourceRect);
 
+    protected:
       enum ImageAttributes
       {
         SRC_RECT       = LAST_ATTRIBUTE << 1, // Source image rectangle
@@ -104,6 +108,8 @@ namespace canvas
         SRC_CANVAS     = DEST_SIZE << 1
       };
 
+      virtual void updateImpl(double dt);
+
       virtual void childChanged(SGPropertyNode * child);
 
       void setupDefaultDimensions();
@@ -129,9 +135,9 @@ namespace canvas
       osg::ref_ptr<osg::Vec2Array> _texCoords;
       osg::ref_ptr<osg::Vec4Array> _colors;
 
-      SGPropertyNode *_node_src_rect;
-      SGRect<float>   _src_rect,
-                      _region;
+      SGPropertyNode *_node_src_rect = nullptr;
+      SGRect<float>   _src_rect {0, 0},
+                      _region   {0, 0};
 
       SVGpreserveAspectRatio _preserve_aspect_ratio;
 

simgear/canvas/elements/CanvasMap.cxx

@@ -17,13 +17,15 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
+
 #include "CanvasMap.hxx"
 #include "map/geo_node_pair.hxx"
 #include "map/projection.hxx"
 
-#include <cmath>
+#include <simgear/misc/strutils.hxx>
 
-#include <boost/algorithm/string/predicate.hpp>
+#include <cmath>
 
 #define LOG_GEO_RET(msg) \
   {\
@@ -46,6 +48,12 @@ namespace canvas
   const std::string GEO = "-geo";
   const std::string HDG = "hdg";
   const std::string Map::TYPE_NAME = "map";
+  const std::string WEB_MERCATOR = "webmercator";
+  const std::string REF_LAT = "ref-lat";
+  const std::string REF_LON = "ref-lon";
+  const std::string SCREEN_RANGE = "screen-range";
+  const std::string RANGE = "range";
+  const std::string PROJECTION = "projection";
 
   //----------------------------------------------------------------------------
   void Map::staticInit()
@@ -63,12 +71,11 @@ namespace canvas
             const SGPropertyNode_ptr& node,
             const Style& parent_style,
             ElementWeakPtr parent ):
-    Group(canvas, node, parent_style, parent),
-    // TODO make projection configurable
-    _projection(new SansonFlamsteedProjection),
-    _projection_dirty(true)
+    Group(canvas, node, parent_style, parent)
   {
     staticInit();
+
+    projectionNodeChanged(node->getChild(PROJECTION));
   }
 
   //----------------------------------------------------------------------------
@@ -78,13 +85,13 @@ namespace canvas
   }
 
   //----------------------------------------------------------------------------
-  void Map::update(double dt)
+  void Map::updateImpl(double dt)
   {
-    for( GeoNodes::iterator it = _geo_nodes.begin();
-         it != _geo_nodes.end();
-         ++it )
+    Group::updateImpl(dt);
+
+    for(auto& it: _geo_nodes)
     {
-      GeoNodePair* geo_node = it->second.get();
+      GeoNodePair* geo_node = it.second.get();
       if(    !geo_node->isComplete()
           || (!geo_node->isDirty() && !_projection_dirty) )
         continue;
@@ -106,14 +113,12 @@ namespace canvas
       geo_node->setDirty(false);
     }
     _projection_dirty = false;
-
-    Group::update(dt);
   }
 
   //----------------------------------------------------------------------------
   void Map::childAdded(SGPropertyNode* parent, SGPropertyNode* child)
   {
-    if( boost::ends_with(child->getNameString(), GEO) )
+    if( strutils::ends_with(child->getNameString(), GEO) )
       _geo_nodes[child].reset(new GeoNodePair());
     else if( parent != _node && child->getNameString() == HDG )
       _hdg_nodes.insert(child);
@@ -124,7 +129,7 @@ namespace canvas
   //----------------------------------------------------------------------------
   void Map::childRemoved(SGPropertyNode* parent, SGPropertyNode* child)
   {
-    if( boost::ends_with(child->getNameString(), GEO) )
+    if( strutils::ends_with(child->getNameString(), GEO) )
       // TODO remove from other node
       _geo_nodes.erase(child);
     else if( parent != _node && child->getName() == HDG )
@@ -146,7 +151,7 @@ namespace canvas
     {
       const std::string& name = child->getNameString();
 
-      if( boost::ends_with(name, GEO) )
+      if( strutils::ends_with(name, GEO) )
         return geoNodeChanged(child);
       else if( name == HDG )
         return hdgNodeChanged(child);
@@ -161,10 +166,10 @@ namespace canvas
     if( child->getParent() != _node )
       return Group::childChanged(child);
 
-    if(    child->getNameString() == "ref-lat"
-        || child->getNameString() == "ref-lon" )
-      _projection->setWorldPosition( _node->getDoubleValue("ref-lat"),
-                                     _node->getDoubleValue("ref-lon") );
+    if(    child->getNameString() == REF_LAT
+        || child->getNameString() == REF_LON )
+      _projection->setWorldPosition( _node->getDoubleValue(REF_LAT),
+                                     _node->getDoubleValue(REF_LON) );
     else if( child->getNameString() == HDG )
     {
       _projection->setOrientation(child->getFloatValue());
@@ -173,16 +178,35 @@ namespace canvas
                            ++it )
         hdgNodeChanged(*it);
     }
-    else if( child->getNameString() == "range" )
+    else if( child->getNameString() == RANGE )
       _projection->setRange(child->getDoubleValue());
-    else if( child->getNameString() == "screen-range" )
+    else if( child->getNameString() == SCREEN_RANGE )
       _projection->setScreenRange(child->getDoubleValue());
+    else if( child->getNameString() == PROJECTION )
+      projectionNodeChanged(child);
     else
       return Group::childChanged(child);
 
     _projection_dirty = true;
   }
 
+  //----------------------------------------------------------------------------
+  void Map::projectionNodeChanged(SGPropertyNode* child)
+  {
+    if(child && child->getStringValue() == WEB_MERCATOR)
+      _projection = std::make_shared<WebMercatorProjection>();
+    else
+      _projection = std::make_shared<SansonFlamsteedProjection>();
+
+    _projection->setWorldPosition(_node->getDoubleValue(REF_LAT),
+                                  _node->getDoubleValue(REF_LON) );
+    _projection->setOrientation(_node->getFloatValue(HDG));
+    _projection->setScreenRange(_node->getDoubleValue(SCREEN_RANGE));
+    _projection->setRange(_node->getDoubleValue(RANGE));
+
+    _projection_dirty = true;
+  }
+
   //----------------------------------------------------------------------------
   void Map::geoNodeChanged(SGPropertyNode* child)
   {

simgear/canvas/elements/CanvasMap.hxx

@@ -22,9 +22,9 @@
 
 #include "CanvasGroup.hxx"
 
-#include <boost/shared_ptr.hpp>
-#include <boost/unordered_map.hpp>
-#include <boost/unordered_set.hpp>
+#include <memory>
+#include <unordered_map>
+#include <unordered_set>
 
 namespace simgear
 {
@@ -45,45 +45,41 @@ namespace canvas
            ElementWeakPtr parent = 0 );
       virtual ~Map();
 
-      virtual void update(double dt);
-
-      virtual void childAdded( SGPropertyNode * parent,
-                               SGPropertyNode * child );
-      virtual void childRemoved( SGPropertyNode * parent,
-                                 SGPropertyNode * child );
-      virtual void valueChanged(SGPropertyNode * child);
-
     protected:
+      virtual void updateImpl(double dt);
 
-      virtual void childChanged(SGPropertyNode * child);
+      void updateProjection(SGPropertyNode* type_node);
 
-      typedef boost::unordered_map< SGPropertyNode*,
-                                    boost::shared_ptr<GeoNodePair>
-                                  > GeoNodes;
-      typedef boost::unordered_set<SGPropertyNode*> NodeSet;
+      virtual void childAdded( SGPropertyNode* parent,
+                               SGPropertyNode* child );
+      virtual void childRemoved( SGPropertyNode* parent,
+                                 SGPropertyNode* child );
+      virtual void valueChanged(SGPropertyNode* child);
+      virtual void childChanged(SGPropertyNode* child);
+
+      using GeoNodes =
+        std::unordered_map<SGPropertyNode*, std::shared_ptr<GeoNodePair>>;
+      using NodeSet = std::unordered_set<SGPropertyNode*>;
 
       GeoNodes _geo_nodes;
       NodeSet  _hdg_nodes;
-      boost::shared_ptr<HorizontalProjection> _projection;
-      bool _projection_dirty;
+      std::shared_ptr<HorizontalProjection> _projection;
+      bool _projection_dirty = false;
 
       struct GeoCoord
       {
-        GeoCoord():
-          type(INVALID),
-          value(0)
-        {}
         enum
         {
           INVALID,
           LATITUDE,
           LONGITUDE
-        } type;
-        double value;
+        } type = INVALID;
+        double value = 0;
       };
 
-      void geoNodeChanged(SGPropertyNode * child);
-      void hdgNodeChanged(SGPropertyNode * child);
+      void projectionNodeChanged(SGPropertyNode* child);
+      void geoNodeChanged(SGPropertyNode* child);
+      void hdgNodeChanged(SGPropertyNode* child);
 
       GeoCoord parseGeoCoord(const std::string& val) const;
   };

simgear/canvas/elements/CanvasPath.cxx

@@ -16,14 +16,18 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
+
 #include "CanvasPath.hxx"
 #include <simgear/scene/util/parse_color.hxx>
+#include <simgear/misc/strutils.hxx>
 
 #include <osg/Drawable>
 #include <osg/Version>
 
 #include <vg/openvg.h>
 #include <cassert>
+#include <cctype>
 
 namespace simgear
 {
@@ -57,21 +61,158 @@ namespace canvas
    */
   std::vector<float> splitAndConvert(const char del[], const std::string& str);
 
+    static float parseCSSNumber(const std::string& s)
+    {
+        if (strutils::ends_with(s, "px")) {
+            return std::stof(s.substr(0, s.length() - 2));
+        } else if (s.back() == '%') {
+            float f = std::stof(s.substr(0, s.length() - 1));
+            return f / 100.0f;
+        }
+        return std::stof(s);
+    }
+
+    //----------------------------------------------------------------------------
+    static bool parseSVGPathToVGPath(const std::string& svgPath, CmdList& commands, CoordList& coords)
+    {
+        const string_list& tokens = simgear::strutils::split_on_any_of(svgPath, "\t \n\r,");
+        char activeSVGCommand = 0;
+        bool isRelative = false;
+        int tokensNeeded = 0;
+
+        for (auto it = tokens.begin(); it != tokens.end(); ) {
+            // set up the new command data
+            if ((it->size() == 1) && std::isalpha(it->at(0))) {
+                const char svgCommand = std::toupper(it->at(0));
+                isRelative = std::islower(it->at(0));
+                switch (svgCommand) {
+                case 'Z':
+                        tokensNeeded = 0;
+                        break;
+                case 'M':
+                case 'L':
+                case 'T':
+                        tokensNeeded = 2;
+                        break;
+                case 'H':
+                case 'V':
+                        tokensNeeded = 1;
+                        break;
+                case 'C':
+                        tokensNeeded = 6;
+                        break;
+                case 'S':
+                case 'Q':
+                        tokensNeeded = 4;
+                        break;
+                case 'A':
+                        tokensNeeded = 7;
+                        break;
+                default:
+                    SG_LOG(SG_GENERAL, SG_WARN, "unrecognized SVG path command: "
+                           << *it << " at token " <<  std::distance(tokens.begin(), it));
+                    return false;
+                }
+
+                activeSVGCommand = svgCommand;
+                ++it; // advance to first coordinate token
+            }
+
+            const int numTokensRemaining = std::distance(it, tokens.end());
+            if (numTokensRemaining < tokensNeeded) {
+                SG_LOG(SG_GENERAL, SG_WARN, "insufficent SVG path tokens");
+                return false;
+            }
+
+            bool pushTokensDirectly = true;
+            if (activeSVGCommand == 'Z') {
+                commands.push_back(VG_CLOSE_PATH);
+                activeSVGCommand = 0;
+            } else if (activeSVGCommand == 'M') {
+                commands.push_back(VG_MOVE_TO | isRelative);
+                activeSVGCommand = 'L';
+            } else if (activeSVGCommand == 'L') {
+                commands.push_back(VG_LINE_TO | isRelative);
+            } else if (activeSVGCommand == 'H') {
+                commands.push_back(VG_HLINE_TO | isRelative);
+            } else if (activeSVGCommand == 'V') {
+                commands.push_back(VG_HLINE_TO | isRelative);
+            } else if (activeSVGCommand == 'C') {
+                commands.push_back(VG_CUBIC_TO | isRelative);
+            } else if (activeSVGCommand == 'S') {
+                commands.push_back(VG_SCUBIC_TO | isRelative);
+            } else if (activeSVGCommand == 'Q') {
+                commands.push_back(VG_SCUBIC_TO | isRelative);
+            } else if (activeSVGCommand == 'T') {
+                commands.push_back(VG_SCUBIC_TO | isRelative);
+            } else if (activeSVGCommand == 'A') {
+                pushTokensDirectly = false; // deal with tokens manually
+                coords.push_back(parseCSSNumber(*it++)); // rx
+                coords.push_back(parseCSSNumber(*it++)); // ry
+                coords.push_back(parseCSSNumber(*it++)); // x-axis rotation
+
+                const bool isLargeArc = std::stoi(*it++); // large-angle
+                const bool isCCW = std::stoi(*it++); // sweep-flag
+
+                int vgCmd = isLargeArc ? (isCCW ? VG_LCCWARC_TO : VG_LCWARC_TO) :
+                    (isCCW ? VG_SCCWARC_TO : VG_SCWARC_TO);
+
+                coords.push_back(parseCSSNumber(*it++));
+                coords.push_back(parseCSSNumber(*it++));
+                commands.push_back(vgCmd | isRelative);
+            } else {
+                SG_LOG(SG_GENERAL, SG_WARN, "malformed SVG path string: expected a command at token:"
+                       << std::distance(tokens.begin(), it) << " :" << *it);
+                return false;
+            }
+
+            if (pushTokensDirectly) {
+                for (int i=0; i<tokensNeeded;++i) {
+                    coords.push_back(parseCSSNumber(*it++));
+                }
+            }
+        } // of tokens iteration
+
+        return true;
+    }
+
+
+    //---------------------------------------------------------------------------
+
+    static SGVec2f parseRectCornerRadius(SGPropertyNode* node, const std::string& xDir, const std::string& yDir, bool& haveCorner)
+    {
+        haveCorner = false;
+        std::string propName = "border-" + yDir + "-" + xDir + "-radius";
+        if (!node->hasChild(propName)) {
+            propName = "border-" + yDir + "-radius";
+            if (!node->hasChild(propName)) {
+                propName = "border-radius";
+            }
+        }
+
+        PropertyList props = node->getChildren(propName);
+        if (props.size() == 1) {
+            double r = props.at(0)->getDoubleValue(propName);
+            haveCorner = true;
+            return SGVec2f(r, r);
+        }
+
+        if (props.size() >= 2 ) {
+            haveCorner = true;
+            return SGVec2f(props.at(0)->getDoubleValue(),
+                           props.at(1)->getDoubleValue());
+        }
+
+        return SGVec2f(-1.0f, -1.0f);
+    }
+
+  //----------------------------------------------------------------------------
   class Path::PathDrawable:
     public osg::Drawable
   {
     public:
       PathDrawable(Path* path):
-        _path_element(path),
-        _path(VG_INVALID_HANDLE),
-        _paint(VG_INVALID_HANDLE),
-        _paint_fill(VG_INVALID_HANDLE),
-        _attributes_dirty(~0),
-        _mode(0),
-        _fill_rule(VG_EVEN_ODD),
-        _stroke_width(1),
-        _stroke_linecap(VG_CAP_BUTT),
-        _stroke_linejoin(VG_JOIN_MITER)
+        _path_element(path)
       {
         setSupportsDisplayList(false);
         setDataVariance(Object::DYNAMIC);
@@ -132,6 +273,16 @@ namespace canvas
         }
       }
 
+      /**
+       * Set path fill opacity (Only used if fill is not "none")
+       */
+      void setFillOpacity(float opacity)
+      {
+        _fill_opacity =
+          static_cast<uint8_t>(SGMiscf::clip(opacity, 0.f, 1.f) * 255);
+        _attributes_dirty |= FILL_COLOR;
+      }
+
       /**
        * Set path fill rule ("pseudo-nonzero" or "evenodd")
        *
@@ -159,7 +310,7 @@ namespace canvas
         else if( parseColor(stroke, _stroke_color) )
         {
           _mode |= VG_STROKE_PATH;
-                    _attributes_dirty |= STROKE_COLOR;
+          _attributes_dirty |= STROKE_COLOR;
         }
         else
         {
@@ -172,6 +323,16 @@ namespace canvas
         }
       }
 
+      /**
+       * Set path stroke opacity (only used if stroke is not "none")
+       */
+      void setStrokeOpacity(float opacity)
+      {
+        _stroke_opacity =
+          static_cast<uint8_t>(SGMiscf::clip(opacity, 0.f, 1.f) * 255);
+        _attributes_dirty |= STROKE_COLOR;
+      }
+
       /**
        * Set stroke width
        */
@@ -239,31 +400,22 @@ namespace canvas
         osg::StateAttribute const* blend_func =
           state->getLastAppliedAttribute(osg::StateAttribute::BLENDFUNC);
 
-        // Initialize/Update the paint
-        if( _attributes_dirty & STROKE_COLOR )
-        {
-          if( _paint == VG_INVALID_HANDLE )
-            _paint = vgCreatePaint();
-
-          vgSetParameterfv(_paint, VG_PAINT_COLOR, 4, _stroke_color._v);
-
-          _attributes_dirty &= ~STROKE_COLOR;
-        }
-
-        // Initialize/update fill paint
-        if( _attributes_dirty & FILL_COLOR )
-        {
-          if( _paint_fill == VG_INVALID_HANDLE )
-            _paint_fill = vgCreatePaint();
-
-          vgSetParameterfv(_paint_fill, VG_PAINT_COLOR, 4, _fill_color._v);
-
-          _attributes_dirty &= ~FILL_COLOR;
-        }
-
         // Setup paint
         if( _mode & VG_STROKE_PATH )
         {
+          // Initialize/Update the paint
+          if( _attributes_dirty & STROKE_COLOR )
+          {
+            if( _paint == VG_INVALID_HANDLE )
+              _paint = vgCreatePaint();
+
+            auto color = _stroke_color;
+            color.a() *= _stroke_opacity / 255.f;
+            vgSetParameterfv(_paint, VG_PAINT_COLOR, 4, color._v);
+
+            _attributes_dirty &= ~STROKE_COLOR;
+          }
+
           vgSetPaint(_paint, VG_STROKE_PATH);
 
           vgSetf(VG_STROKE_LINE_WIDTH, _stroke_width);
@@ -275,6 +427,19 @@ namespace canvas
         }
         if( _mode & VG_FILL_PATH )
         {
+          // Initialize/update fill paint
+          if( _attributes_dirty & FILL_COLOR )
+          {
+            if( _paint_fill == VG_INVALID_HANDLE )
+              _paint_fill = vgCreatePaint();
+
+            auto color = _fill_color;
+            color.a() *= _fill_opacity / 255.f;
+            vgSetParameterfv(_paint_fill, VG_PAINT_COLOR, 4, color._v);
+
+            _attributes_dirty &= ~FILL_COLOR;
+          }
+
           vgSetPaint(_paint_fill, VG_FILL_PATH);
 
           vgSeti(VG_FILL_RULE, _fill_rule);
@@ -428,22 +593,24 @@ namespace canvas
 
       Path *_path_element;
 
-      mutable VGPath    _path;
-      mutable VGPaint   _paint;
-      mutable VGPaint   _paint_fill;
-      mutable uint32_t  _attributes_dirty;
+      mutable VGPath    _path {VG_INVALID_HANDLE};
+      mutable VGPaint   _paint {VG_INVALID_HANDLE};
+      mutable VGPaint   _paint_fill {VG_INVALID_HANDLE};
+      mutable uint32_t  _attributes_dirty {~0u};
 
       CmdList   _cmds;
       CoordList _coords;
 
-      VGbitfield            _mode;
+      VGbitfield            _mode {0};
       osg::Vec4f            _fill_color;
-      VGFillRule            _fill_rule;
+      uint8_t               _fill_opacity {255};
+      VGFillRule            _fill_rule {VG_EVEN_ODD};
       osg::Vec4f            _stroke_color;
-      VGfloat               _stroke_width;
+      uint8_t               _stroke_opacity {255};
+      VGfloat               _stroke_width {1};
       std::vector<VGfloat>  _stroke_dash;
-      VGCapStyle            _stroke_linecap;
-      VGJoinStyle            _stroke_linejoin;
+      VGCapStyle            _stroke_linecap {VG_CAP_BUTT};
+      VGJoinStyle           _stroke_linejoin {VG_JOIN_MITER};
 
       osg::Vec3f transformPoint( const osg::Matrix& m,
                                  osg::Vec2f pos ) const
@@ -519,8 +686,10 @@ namespace canvas
     PathDrawableRef Path::*path = &Path::_path;
 
     addStyle("fill", "color", &PathDrawable::setFill, path);
+    addStyle("fill-opacity", "numeric", &PathDrawable::setFillOpacity, path);
     addStyle("fill-rule", "", &PathDrawable::setFillRule, path);
     addStyle("stroke", "color", &PathDrawable::setStroke, path);
+    addStyle("stroke-opacity", "numeric", &PathDrawable::setStrokeOpacity, path);
     addStyle("stroke-width", "numeric", &PathDrawable::setStrokeWidth, path);
     addStyle("stroke-dasharray", "", &PathDrawable::setStrokeDashArray, path);
     addStyle("stroke-linecap", "", &PathDrawable::setStrokeLinecap, path);
@@ -533,7 +702,9 @@ namespace canvas
               const Style& parent_style,
               ElementWeakPtr parent ):
     Element(canvas, node, parent_style, parent),
-    _path( new PathDrawable(this) )
+    _path( new PathDrawable(this) ),
+    _hasSVG(false),
+    _hasRect(false)
   {
     staticInit();
 
@@ -547,75 +718,69 @@ namespace canvas
 
   }
 
-  //----------------------------------------------------------------------------
-  void Path::update(double dt)
-  {
-    if( _attributes_dirty & (CMDS | COORDS) )
-    {
-      _path->setSegments
-      (
-        _node->getChildValues<VGubyte, int>("cmd"),
-        _node->getChildValues<VGfloat, float>("coord")
-      );
-
-      _attributes_dirty &= ~(CMDS | COORDS);
-    }
-
-    Element::update(dt);
-  }
-
   //----------------------------------------------------------------------------
   osg::BoundingBox Path::getTransformedBounds(const osg::Matrix& m) const
   {
     return _path->getTransformedBounds(m);
   }
 
+  //----------------------------------------------------------------------------
+  Path& Path::addSegment(uint8_t cmd, std::initializer_list<float> coords)
+  {
+    _node->addChild("cmd")->setIntValue(cmd);
+
+    for(float coord: coords)
+      _node->addChild("coord")->setFloatValue(coord);
+
+    return *this;
+  }
+
   //----------------------------------------------------------------------------
   Path& Path::moveTo(float x_abs, float y_abs)
   {
-    return addSegment(VG_MOVE_TO_ABS, x_abs, y_abs);
+    return addSegment(VG_MOVE_TO_ABS, {x_abs, y_abs});
   }
 
   //----------------------------------------------------------------------------
   Path& Path::move(float x_rel, float y_rel)
   {
-    return addSegment(VG_MOVE_TO_REL, x_rel, y_rel);
+    return addSegment(VG_MOVE_TO_REL, {x_rel, y_rel});
   }
 
   //----------------------------------------------------------------------------
   Path& Path::lineTo(float x_abs, float y_abs)
   {
-    return addSegment(VG_LINE_TO_ABS, x_abs, y_abs);
+    return addSegment(VG_LINE_TO_ABS, {x_abs, y_abs});
   }
 
   //----------------------------------------------------------------------------
   Path& Path::line(float x_rel, float y_rel)
   {
-    return addSegment(VG_LINE_TO_REL, x_rel, y_rel);
+    return addSegment(VG_LINE_TO_REL, {x_rel, y_rel});
   }
 
   //----------------------------------------------------------------------------
   Path& Path::horizTo(float x_abs)
   {
-    return addSegment(VG_HLINE_TO_ABS, x_abs);
+    return addSegment(VG_HLINE_TO_ABS, {x_abs});
   }
 
   //----------------------------------------------------------------------------
   Path& Path::horiz(float x_rel)
   {
-    return addSegment(VG_HLINE_TO_REL, x_rel);
+    return addSegment(VG_HLINE_TO_REL, {x_rel});
   }
 
   //----------------------------------------------------------------------------
   Path& Path::vertTo(float y_abs)
   {
-    return addSegment(VG_VLINE_TO_ABS, y_abs);
+    return addSegment(VG_VLINE_TO_ABS, {y_abs});
   }
 
   //----------------------------------------------------------------------------
   Path& Path::vert(float y_rel)
   {
-    return addSegment(VG_VLINE_TO_REL, y_rel);
+    return addSegment(VG_VLINE_TO_REL, {y_rel});
   }
 
   //----------------------------------------------------------------------------
@@ -630,16 +795,109 @@ namespace canvas
     childChanged(child);
   }
 
+  //----------------------------------------------------------------------------
+  void Path::setSVGPath(const std::string& svgPath)
+  {
+    _node->setStringValue("svg", svgPath);
+    _hasSVG = true;
+    _attributes_dirty |= SVG;
+  }
+
+  //----------------------------------------------------------------------------
+  void Path::setRect(const SGRect<float> &r)
+  {
+    _rect = r;
+    _hasRect = true;
+    _attributes_dirty |= RECT;
+  }
+
+  //----------------------------------------------------------------------------
+  void Path::setRoundRect(const SGRect<float> &r, float radiusX, float radiusY)
+  {
+    if (radiusY < 0.0) {
+        radiusY = radiusX;
+    }
+
+    setRect(r);
+    _node->getChild("border-radius", 0, true)->setDoubleValue(radiusX);
+    _node->getChild("border-radius", 1, true)->setDoubleValue(radiusY);
+  }
+
+  //----------------------------------------------------------------------------
+  void Path::updateImpl(double dt)
+  {
+    Element::updateImpl(dt);
+
+    if( _attributes_dirty & (CMDS | COORDS) )
+    {
+      _path->setSegments
+      (
+        _node->getChildValues<VGubyte, int>("cmd"),
+        _node->getChildValues<VGfloat, float>("coord")
+      );
+
+      _attributes_dirty &= ~(CMDS | COORDS);
+    }
+
+    // SVG path overrides manual cmd/coord specification
+    if( _hasSVG && (_attributes_dirty & SVG) )
+    {
+      CmdList cmds;
+      CoordList coords;
+      parseSVGPathToVGPath(_node->getStringValue("svg"), cmds, coords);
+      _path->setSegments(cmds, coords);
+      _attributes_dirty &= ~SVG;
+    }
+
+    if( _hasRect &&(_attributes_dirty & RECT) )
+    {
+      parseRectToVGPath();
+      _attributes_dirty &= ~RECT;
+    }
+  }
+
   //----------------------------------------------------------------------------
   void Path::childChanged(SGPropertyNode* child)
   {
+    const std::string& name = child->getNameString();
+    const std::string &prName = child->getParent()->getNameString();
+
+    if( strutils::starts_with(name, "border-") )
+    {
+      _attributes_dirty |= RECT;
+      return;
+    }
+
+    if (prName == "rect")
+    {
+      _hasRect = true;
+      if (name == "left") {
+          _rect.setLeft(child->getDoubleValue());
+      } else if (name == "top") {
+          _rect.setTop(child->getDoubleValue());
+      } else if (name == "right") {
+          _rect.setRight(child->getDoubleValue());
+      } else if (name == "bottom") {
+          _rect.setBottom(child->getDoubleValue());
+      } else if (name == "width") {
+          _rect.setWidth(child->getDoubleValue());
+      } else if (name == "height") {
+          _rect.setHeight(child->getDoubleValue());
+      }
+      _attributes_dirty |= RECT;
+      return;
+    }
+
     if( child->getParent() != _node )
       return;
 
-    if( child->getNameString() == "cmd" )
+    if( name == "cmd" )
       _attributes_dirty |= CMDS;
-    else if( child->getNameString() == "coord" )
+    else if( name == "coord" )
       _attributes_dirty |= COORDS;
+    else if ( name == "svg")
+      _hasSVG = true;
+      _attributes_dirty |= SVG;
   }
 
   //----------------------------------------------------------------------------
@@ -664,5 +922,68 @@ namespace canvas
     return values;
   }
 
+  //----------------------------------------------------------------------------
+  void operator+=(CoordList& base, const std::initializer_list<VGfloat>& other)
+  {
+    base.insert(base.end(), other.begin(), other.end());
+  }
+
+  //----------------------------------------------------------------------------
+  void Path::parseRectToVGPath()
+  {
+    CmdList commands;
+    CoordList coords;
+    commands.reserve(4);
+    coords.reserve(8);
+
+    bool haveCorner = false;
+    SGVec2f topLeft = parseRectCornerRadius(_node, "left", "top", haveCorner);
+    if (haveCorner) {
+        commands.push_back(VG_MOVE_TO_ABS);
+        coords += {_rect.l(), _rect.t() + topLeft.y()};
+        commands.push_back(VG_SCCWARC_TO_REL);
+        coords += {topLeft.x(), topLeft.y(), 0.0, topLeft.x(), -topLeft.y()};
+    } else {
+        commands.push_back(VG_MOVE_TO_ABS);
+        coords += {_rect.l(), _rect.t()};
+    }
+
+    SGVec2f topRight = parseRectCornerRadius(_node, "right", "top", haveCorner);
+    if (haveCorner) {
+        commands.push_back(VG_HLINE_TO_ABS);
+        coords += {_rect.r() - topRight.x()};
+        commands.push_back(VG_SCCWARC_TO_REL);
+        coords += {topRight.x(), topRight.y(), 0.0, topRight.x(), topRight.y()};
+    } else {
+        commands.push_back(VG_HLINE_TO_ABS);
+        coords += {_rect.r()};
+    }
+
+    SGVec2f bottomRight = parseRectCornerRadius(_node, "right", "bottom", haveCorner);
+    if (haveCorner) {
+        commands.push_back(VG_VLINE_TO_ABS);
+        coords += {_rect.b() - bottomRight.y()};
+        commands.push_back(VG_SCCWARC_TO_REL);
+        coords += {bottomRight.x(), bottomRight.y(), 0.0, -bottomRight.x(), bottomRight.y()};
+    } else {
+        commands.push_back(VG_VLINE_TO_ABS);
+        coords += {_rect.b()};
+    }
+
+    SGVec2f bottomLeft = parseRectCornerRadius(_node, "left", "bottom", haveCorner);
+    if (haveCorner) {
+        commands.push_back(VG_HLINE_TO_ABS);
+        coords += {_rect.l() + bottomLeft.x()};
+        commands.push_back(VG_SCCWARC_TO_REL);
+        coords += {bottomLeft.x(), bottomLeft.y(), 0.0, -bottomLeft.x(), -bottomLeft.y()};
+    } else {
+        commands.push_back(VG_HLINE_TO_ABS);
+        coords += {_rect.l()};
+    }
+
+    commands.push_back(VG_CLOSE_PATH);
+    _path->setSegments(commands, coords);
+  }
+
 } // namespace canvas
 } // namespace simgear

simgear/canvas/elements/CanvasPath.hxx

@@ -20,7 +20,8 @@
 #define CANVAS_PATH_HXX_
 
 #include "CanvasElement.hxx"
-#include <boost/preprocessor/iteration/iterate.hpp>
+#include <simgear/math/SGRect.hxx>
+#include <initializer_list>
 
 namespace simgear
 {
@@ -39,14 +40,10 @@ namespace canvas
             ElementWeakPtr parent = 0 );
       virtual ~Path();
 
-      virtual void update(double dt);
-
       virtual osg::BoundingBox getTransformedBounds(const osg::Matrix& m) const;
 
-#define BOOST_PP_ITERATION_LIMITS (0, 6)
-#define BOOST_PP_FILENAME_1 \
-        <simgear/canvas/elements/detail/add_segment_variadic.hxx>
-#include BOOST_PP_ITERATE()
+      /** Add a segment with the given command and coordinates */
+      Path& addSegment(uint8_t cmd, std::initializer_list<float> coords = {});
 
       /** Move path cursor */
       Path& moveTo(float x_abs, float y_abs);
@@ -67,20 +64,34 @@ namespace canvas
       /** Close the path (implicit lineTo to first point of path) */
       Path& close();
 
-    protected:
+      void setSVGPath(const std::string& svgPath);
 
+      void setRect(const SGRectf& r);
+      void setRoundRect(const SGRectf& r, float radiusX, float radiusY = -1.0);
+
+    protected:
       enum PathAttributes
       {
         CMDS       = LAST_ATTRIBUTE << 1,
-        COORDS     = CMDS << 1
+        COORDS     = CMDS << 1,
+        SVG        = COORDS << 1,
+        RECT       = SVG << 1
       };
 
       class PathDrawable;
       typedef osg::ref_ptr<PathDrawable> PathDrawableRef;
       PathDrawableRef _path;
 
+      bool _hasSVG : 1;
+      bool _hasRect : 1;
+      SGRectf _rect;
+
+      virtual void updateImpl(double dt);
+
       virtual void childRemoved(SGPropertyNode * child);
       virtual void childChanged(SGPropertyNode * child);
+
+      void parseRectToVGPath();
   };
 
 } // namespace canvas

simgear/canvas/elements/CanvasText.cxx

@@ -16,6 +16,7 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
 #include "CanvasText.hxx"
 #include <simgear/canvas/Canvas.hxx>
 #include <simgear/canvas/CanvasSystemAdapter.hxx>
@@ -496,18 +497,31 @@ namespace canvas
               {
                 case LEFT_TO_RIGHT:
                 {
-                  osg::Vec2 delta( activefont->getKerning( previous_charcode,
-                                                           charcode,
-                                                           _kerningType ) );
+#if OSG_VERSION_LESS_THAN(3,5,2)
+                    osg::Vec2 delta(activefont->getKerning(previous_charcode,
+                        charcode,
+                        _kerningType));
+#else
+                    osg::Vec2 delta(activefont->getKerning(_fontSize,
+                        previous_charcode,
+                        charcode,
+                        _kerningType));
+#endif
                   cursor.x() += delta.x() * wr;
                   cursor.y() += delta.y() * hr;
                   break;
                 }
                 case RIGHT_TO_LEFT:
                 {
-                  osg::Vec2 delta( activefont->getKerning( charcode,
-                                                           previous_charcode,
-                                                           _kerningType ) );
+#if OSG_VERSION_LESS_THAN(3,5,2)
+                    osg::Vec2 delta(activefont->getKerning(charcode,
+                        previous_charcode,
+                        _kerningType));
+#else
+                    osg::Vec2 delta(activefont->getKerning(_fontSize, charcode,
+                        previous_charcode,
+                        _kerningType));
+#endif
                   cursor.x() -= delta.x() * wr;
                   cursor.y() -= delta.y() * hr;
                   break;
@@ -851,12 +865,12 @@ namespace canvas
   //----------------------------------------------------------------------------
   osg::StateSet* Text::getOrCreateStateSet()
   {
-    if( !_transform.valid() )
-      return 0;
+    if( !_scene_group.valid() )
+      return nullptr;
 
     // Only check for StateSet on Transform, as the text stateset is shared
     // between all text instances using the same font (texture).
-    return _transform->getOrCreateStateSet();
+    return _scene_group->getOrCreateStateSet();
   }
 
 } // namespace canvas

simgear/canvas/elements/detail/add_segment_variadic.hxx

@@ -1,21 +0,0 @@
-#ifndef CANVAS_PATH_HXX_
-# error Canvas - do not include this file!
-#endif
-
-#define n BOOST_PP_ITERATION()
-
-Path& addSegment( uint8_t cmd
-                  BOOST_PP_COMMA_IF(n)
-                  BOOST_PP_ENUM_PARAMS(n, float coord) )
-{
-  _node->addChild("cmd")->setIntValue(cmd);
-
-#define SG_CANVAS_PATH_SET_COORD(z, n, dummy)\
-  _node->addChild("coord")->setFloatValue(coord##n);
-
-  BOOST_PP_REPEAT(n, SG_CANVAS_PATH_SET_COORD, 0)
-#undef SG_CANVAS_PATH_SET_COORD
-  return *this;
-}
-
-#undef n

simgear/canvas/elements/map/projection.hxx

@@ -190,6 +190,32 @@ namespace canvas
       }
   };
 
+  /**
+   * WebMercator projection, relative to the projection center.
+   * Required for Slippy Maps - i.e. openstreetmap
+   */
+  class WebMercatorProjection:
+    public HorizontalProjection
+  {
+    protected:
+
+      virtual ScreenPosition project(double lat, double lon) const
+      {
+        double d_lat = lat - _ref_lat,
+               d_lon = lon - _ref_lon;
+        double r = 6378137.f / 1852; // Equatorial radius divided by ?
+
+        ScreenPosition pos;
+
+        pos.x = r * d_lon;
+        pos.y = r * (log(tan(d_lat) + 1.0 / cos(d_lat)));
+        //pos.x = lon;
+        //pos.y = log(tan(lat) + 1.0 / cos(lat));
+        return pos;
+      }
+  };
+
+
 } // namespace canvas
 } // namespace simgear
 

simgear/canvas/events/CustomEvent.cxx

@@ -16,6 +16,7 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
 #include "CustomEvent.hxx"
 
 namespace simgear

simgear/canvas/events/DeviceEvent.cxx

@@ -16,6 +16,8 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
+
 #include "DeviceEvent.hxx"
 #include <osgGA/GUIEventAdapter>
 

simgear/canvas/events/KeyboardEvent.cxx

@@ -16,8 +16,9 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
+
 #include "KeyboardEvent.hxx"
-#include "utf8.h"
 
 #include <osgGA/GUIEventAdapter>
 
@@ -40,6 +41,7 @@ namespace canvas
 
   // TODO check Win/Mac keycode for altgr/ISO Level3 Shift
   const uint32_t KEY_AltGraph = 0xfe03;
+  
 
   //----------------------------------------------------------------------------
   KeyboardEvent::KeyboardEvent():
@@ -267,10 +269,24 @@ namespace canvas
     // Empty or no mapping -> convert UTF-32 key value to UTF-8
     if( _name.empty() )
     {
-      if( !utf8::internal::is_code_point_valid(_key) )
+      if (( _key >= 0xd800u && _key <= 0xdfffu ) || _key > 0x10ffffu )
         _name = "Unidentified";
       else
-        utf8::unchecked::append(_key, std::back_inserter(_name));
+        if ( _key <= 0x7f ) {
+            _name.push_back(static_cast<uint8_t>(_key));
+        } else if ( _key <= 0x7ff ) {
+            _name.push_back(static_cast<uint8_t>((_key >> 6) | 0xc0));
+            _name.push_back(static_cast<uint8_t>((_key & 0x3f) | 0x80));
+        } else if ( _key <= 0xffff ) {
+            _name.push_back(static_cast<uint8_t>((_key >> 12) | 0xe0));
+            _name.push_back(static_cast<uint8_t>(((_key >> 6) & 0x3f) | 0x80));
+            _name.push_back(static_cast<uint8_t>((_key & 0x3f) | 0x80));
+        } else {
+            _name.push_back(static_cast<uint8_t>((_key >> 18) | 0xf0));
+            _name.push_back(static_cast<uint8_t>(((_key >> 12) & 0x3f) | 0x80));
+            _name.push_back(static_cast<uint8_t>(((_key >> 6) & 0x3f) | 0x80));
+            _name.push_back(static_cast<uint8_t>((_key & 0x3f) | 0x80));
+        }
     }
 
     // Keys on the numpad with NumLock enabled are reported just like their
@@ -305,11 +321,30 @@ namespace canvas
     if( key_name.empty() )
       return false;
 
-    std::string::const_iterator it = key_name.begin();
-    uint32_t cp = utf8::next(it, key_name.end());
+    // Convert the key name to the corresponding code point by checking the
+    // sequence length (the first bits of the first byte) and performing the
+    // conversion accordingly.
+    uint32_t cp = key_name[0] & 0xff;
+    size_t len;
+    if (cp < 0x80) {
+      len = 1;
+    } else if ((cp >> 5) == 0x6) {
+      cp = ((cp << 6) & 0x7ff) + (key_name[1] & 0x3f);
+      len = 2;
+    } else if ((cp >> 4) == 0xe) {
+      cp = ((cp << 12) & 0xffff) + (((key_name[1] & 0xff) << 6) & 0xfff)
+        + (key_name[2] & 0x3f);
+      len = 3;
+    } else if ((cp >> 3) == 0x1e) {
+      cp = ((cp << 18) & 0x1fffff) + (((key_name[1] & 0xff) << 12) & 0x3ffff)
+        + (((key_name[2] & 0xff) << 6) & 0xfff) + (key_name[3] & 0x3f);
+      len = 4;
+    } else {
+      return false;
+    }
 
     // Check if _name contains exactly one (UTF-8 encoded) character.
-    if( it != key_name.end() )
+    if (key_name.length() > len)
       return false;
 
     // C0 and C1 control characters are not printable.

simgear/canvas/events/MouseEvent.cxx

@@ -16,6 +16,8 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
+
 #include "MouseEvent.hxx"
 #include <osgGA/GUIEventAdapter>
 

simgear/canvas/events/input_event_demo.cxx

@@ -16,6 +16,8 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
+
 #include "KeyboardEvent.hxx"
 
 #include <osgViewer/Viewer>

simgear/canvas/layout/BoxLayout.cxx

@@ -16,6 +16,8 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
+
 #include "BoxLayout.hxx"
 #include "SpacerItem.hxx"
 #include <simgear/canvas/Canvas.hxx>

simgear/canvas/layout/Layout.cxx

@@ -16,6 +16,7 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
 #include "Layout.hxx"
 #include <simgear/debug/logstream.hxx>
 

simgear/canvas/layout/LayoutItem.cxx

@@ -16,6 +16,7 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
 #include "LayoutItem.hxx"
 #include <simgear/canvas/Canvas.hxx>
 

simgear/canvas/layout/NasalWidget.cxx

@@ -16,6 +16,8 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
+
 #include "NasalWidget.hxx"
 
 #include <simgear/canvas/Canvas.hxx>
@@ -43,7 +45,7 @@ namespace canvas
   //----------------------------------------------------------------------------
   NasalWidget::~NasalWidget()
   {
-    onRemove();
+
   }
 
   //----------------------------------------------------------------------------
@@ -187,10 +189,10 @@ namespace canvas
     if( hfw.empty() )
       return -1;
 
-    naContext c = naNewContext();
     try
     {
-      return hfw(nasal::to_nasal(c, const_cast<NasalWidget*>(this)), w);
+      nasal::Context ctx;
+      return hfw(ctx.to_me(const_cast<NasalWidget*>(this)), w);
     }
     catch( std::exception const& ex )
     {
@@ -200,7 +202,6 @@ namespace canvas
         "NasalWidget.heightForWidth: callback error: '" << ex.what() << "'"
       );
     }
-    naFreeContext(c);
 
     return -1;
   }
@@ -260,8 +261,8 @@ namespace canvas
 
     try
     {
-      nasal::Context c;
-      _set_geometry(nasal::to_nasal(c, this), rect);
+      nasal::Context ctx;
+      _set_geometry(ctx.to_me(this), rect);
       _flags &= ~LAYOUT_DIRTY;
     }
     catch( std::exception const& ex )

simgear/canvas/layout/SpacerItem.cxx

@@ -16,6 +16,7 @@
 // License along with this library; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
 
+#include <simgear_config.h>
 #include "SpacerItem.hxx"
 
 namespace simgear

simgear/compiler.h

@@ -40,96 +40,40 @@
 #define SG_DO_STRINGIZE(X) #X
 
 #ifdef __GNUC__
-#  if __GNUC__ < 3
-#    error Time to upgrade. GNU compilers < 3.0 not supported
-#  elif (__GNUC__ == 3) && (__GNUC_MINOR__ < 4)
-#    warning GCC compilers prior to 3.4 are suspect  
-#  endif
-
 #  define SG_GCC_VERSION (__GNUC__ * 10000 \
                      + __GNUC_MINOR__ * 100 \
                      + __GNUC_PATCHLEVEL__)
 #  define SG_COMPILER_STR "GNU C++ version " SG_STRINGIZE(__GNUC__) "." SG_STRINGIZE(__GNUC_MINOR__)
 #endif // __GNUC__
 
-/* KAI C++ */
-#if defined(__KCC)
-#  define SG_COMPILER_STR "Kai C++ version " SG_STRINGIZE(__KCC_VERSION)
-#endif // __KCC
-
 //
 // Microsoft compilers.
 //
 #ifdef _MSC_VER
-#  define bcopy(from, to, n) memcpy(to, from, n)
+#  define strcasecmp stricmp
 
-#  if _MSC_VER >= 1200  // msvc++ 6.0 or greater
-#    define isnan _isnan
-#    define snprintf _snprintf
-#    if _MSC_VER < 1500
-#      define vsnprintf _vsnprintf
+#  if _MSC_VER >= 1200 // msvc++ 6.0 up to MSVC2013
+#    if _MSC_VER < 1900
+#      define bcopy(from, to, n) memcpy(to, from, n)
+#      define snprintf _snprintf
+#      define strdup _strdup
+#      define copysign _copysign
 #    endif
-#    define copysign _copysign
-#    define strcasecmp stricmp
-
-#    undef min
-#    undef max
 
 #    pragma warning(disable: 4786) // identifier was truncated to '255' characters
 #    pragma warning(disable: 4244) // conversion from double to float
-#    pragma warning(disable: 4305) //
+#    pragma warning(disable: 4305) // truncation from larger type to smaller
+#    pragma warning(disable: 4267) // conversion from size_t to int / 32-bit type
+#    pragma warning(disable: 4996) // don't require _ prefix for standard library functions
+#    pragma warning(disable: 4800) // don't warn about int -> bool performance
 
 #  else
 #    error What version of MSVC++ is this?
 #  endif
-
-#    define SG_COMPILER_STR "Microsoft Visual C++ version " SG_STRINGIZE(_MSC_VER)
+#  define SG_COMPILER_STR "Microsoft Visual C++ version " SG_STRINGIZE(_MSC_VER)
 
 #endif // _MSC_VER
 
-//
-// Native SGI compilers
-//
-
-#if defined ( sgi ) && !defined( __GNUC__ )
-# if (_COMPILER_VERSION < 740)
-#  error Need MipsPro 7.4.0 or higher now
-# endif
-
-#define SG_HAVE_NATIVE_SGI_COMPILERS
-
-#pragma set woff 1001,1012,1014,1116,1155,1172,1174
-#pragma set woff 1401,1460,1551,1552,1681
-
-#ifdef __cplusplus
-# pragma set woff 1682,3303
-# pragma set woff 3624
-#endif
-
-#  define SG_COMPILER_STR "SGI MipsPro compiler version " SG_STRINGIZE(_COMPILER_VERSION)
-
-#endif // Native SGI compilers
-
-
-#if defined (__sun)
-#  define SG_UNIX
-#  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
-
-#  if  !defined( __GNUC__ )
-#   define SG_COMPILER_STR "Sun compiler version " SG_STRINGIZE(__SUNPRO_CC)
-#  endif
-
-#endif // sun
-
 //
 // Intel C++ Compiler
 //
@@ -144,29 +88,10 @@
 #ifdef __APPLE__
 #  define SG_MAC
 #  define SG_UNIX
-#  ifdef __GNUC__
-#    if ( __GNUC__ > 3 ) || ( __GNUC__ == 3 && __GNUC_MINOR__ >= 3 )
-inline int (isnan)(double r) { return !(r <= 0 || r >= 0); }
-#    else
-    // any C++ header file undefines isinf and isnan
-    // so this should be included before <iostream>
-    // the functions are STILL in libm (libSystem on mac os x)
-extern "C" int (isnan)(double);
-extern "C" int (isinf)(double);
-#    endif
-#  else
-inline int (isnan)(double r) { return !(r <= 0 || r >= 0); }
-#  endif
 #endif
 
 #if defined (__FreeBSD__)
 #  define SG_UNIX
-#include <sys/param.h>
-#  if __FreeBSD_version < 500000
-     extern "C" {
-       inline int isnan(double r) { return !(r <= 0 || r >= 0); }
-     }
-#  endif
 #endif
 
 #if defined (__CYGWIN__)
@@ -184,10 +109,13 @@ inline int (isnan)(double r) { return !(r <= 0 || r >= 0); }
 #  define SG_UNIX
 #endif
 
-#if defined( __GNUC__ )
-#  define DEPRECATED __attribute__ ((deprecated))
+#ifdef __GNUC__
+#define SG_DEPRECATED(func) func __attribute__ ((deprecated))
+#elif defined(_MSC_VER)
+#define SG_DEPRECATED(func) __declspec(deprecated) func
 #else
-#  define DEPRECATED
+#pragma message("WARNING: You need to implement SG_DEPRECATED for this compiler")
+#define SG_DEPRECATED(func) func
 #endif
 
 #if defined(__clang__)
@@ -201,4 +129,3 @@ inline int (isnan)(double r) { return !(r <= 0 || r >= 0); }
 //
 
 #endif // _SG_COMPILER_H
-

simgear/constants.h

@@ -95,7 +95,7 @@ const float SG_RADIANS_TO_DEGREES = 180.0f / SG_PI;
 /** Value of earth radius from LaRCsim (ft) */
 #define SG_EQUATORIAL_RADIUS_FT  20925650.
 
-/** Value of earth radius from LaRCsim (meter) */
+/** Value of equatorial earth radius from LaRCsim (meter) */
 #define SG_EQUATORIAL_RADIUS_M   6378138.12
 
 /** Radius squared (ft) */
@@ -104,6 +104,8 @@ const float SG_RADIANS_TO_DEGREES = 180.0f / SG_PI;
 /** Radius squared (meter) */
 #define SG_EQ_RAD_SQUARE_M   40680645877797.1344
 
+/** Value of WGS84 polar earth radius (meter) */
+#define SG_POLAR_RADIUS_M   6356752.3142451794975639668
 
 // Physical Constants, SI
 
@@ -211,8 +213,10 @@ const float SG_RADIANS_TO_DEGREES = 180.0f / SG_PI;
 /** for backwards compatibility */
 #define SG_SCENERY_FILE_FORMAT "0.4"
 
-/** Default range in m at which all objects are displayed.  Overridden by /sim/rendering/static-lod/rough **/
-#define SG_OBJECT_RANGE     9000.0
+/** Default object ranges.  Overridden by /sim/rendering/static-lod/[bare|rough|detailed] **/
+#define SG_OBJECT_RANGE_BARE     30000.0
+#define SG_OBJECT_RANGE_ROUGH     9000.0
+#define SG_OBJECT_RANGE_DETAILED  1500.0
 
 /** Radius of scenery tiles in m **/
 #define SG_TILE_RADIUS      14000.0

simgear/debug/BufferedLogCallback.cxx

@@ -18,7 +18,8 @@
 // along with this program; if not, write to the Free Software
 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 //
-     
+ 
+#include <simgear_config.h>
 #include <simgear/debug/BufferedLogCallback.hxx>
      
 #include <boost/foreach.hpp>

simgear/debug/BufferedLogCallback.hxx

@@ -24,7 +24,7 @@
 #define SG_DEBUG_BUFFEREDLOGCALLBACK_HXX
 
 #include <vector>
-#include <memory> // for std::auto_ptr
+#include <memory> // for std::unique_ptr
 
 #include <simgear/debug/logstream.hxx>
 
@@ -70,10 +70,10 @@ public:
     unsigned int threadsafeCopy(vector_cstring& aOutput);
 private:
     class BufferedLogCallbackPrivate;
-    std::auto_ptr<BufferedLogCallbackPrivate> d;
+    std::unique_ptr<BufferedLogCallbackPrivate> d;
 };
      
 
 } // of namespace simgear
 
-#endif // of SG_DEBUG_BUFFEREDLOGCALLBACK_HXX
+#endif // of SG_DEBUG_BUFFEREDLOGCALLBACK_HXX

simgear/debug/debug_types.h

@@ -42,14 +42,22 @@ typedef enum {
 
 /**
  * Define the possible logging priorities (and their order).
+ *
+ * Caution - unfortunately, this enum is exposed to Nasal via the logprint()
+ * function as an integer parameter. Therefore, new values should only be
+ * appended, or the priority Nasal reports to compiled code will change.
  */
 typedef enum {
     SG_BULK = 1,       // 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_ALERT,          // Very possible impending problem
+    SG_POPUP,          // Severe enough to alert using a pop-up window
     // SG_EXIT,        // Problem (no core)
     // SG_ABORT        // Abandon ship (core)
+
+    SG_DEV_WARN,       // Warning for developers, translated to other priority
+    SG_DEV_ALERT       // Alert for developers, translated
 } sgDebugPriority;
 

simgear/debug/logstream.cxx

@@ -36,46 +36,17 @@
 #include <simgear/threads/SGQueue.hxx>
 #include <simgear/threads/SGGuard.hxx>
 
+#include <simgear/io/iostreams/sgstream.hxx>
 #include <simgear/misc/sg_path.hxx>
 
-#ifdef SG_WINDOWS
+#if defined (SG_WINDOWS)
 // for AllocConsole, OutputDebugString
-    #include "windows.h"
+    #include <windows.h>
+    #include <fcntl.h>
+    #include <io.h>
 #endif
 
-const char* debugClassToString(sgDebugClass c)
-{
-    switch (c) {
-    case SG_NONE:       return "none";
-    case SG_TERRAIN:    return "terrain";
-    case SG_ASTRO:      return "astro";
-    case SG_FLIGHT:     return "flight";
-    case SG_INPUT:      return "input";
-    case SG_GL:         return "opengl";
-    case SG_VIEW:       return "view";
-    case SG_COCKPIT:    return "cockpit";
-    case SG_GENERAL:    return "general";
-    case SG_MATH:       return "math";
-    case SG_EVENT:      return "event";
-    case SG_AIRCRAFT:   return "aircraft";
-    case SG_AUTOPILOT:  return "autopilot";
-    case SG_IO:         return "io";
-    case SG_CLIPPER:    return "clipper";
-    case SG_NETWORK:    return "network";
-    case SG_ATC:        return "atc";
-    case SG_NASAL:      return "nasal";
-    case SG_INSTR:      return "instruments";
-    case SG_SYSTEMS:    return "systems";
-    case SG_AI:         return "ai";
-    case SG_ENVIRONMENT:return "environment";
-    case SG_SOUND:      return "sound";
-    case SG_NAVAID:     return "navaid";
-    case SG_GUI:        return "gui";
-    case SG_TERRASYNC:  return "terrasync";
-    case SG_PARTICLES:  return "particles";
-    default:            return "unknown";
-    }
-}
+
 
 //////////////////////////////////////////////////////////////////////////////
 
@@ -99,6 +70,40 @@ void LogCallback::setLogLevels( sgDebugClass c, sgDebugPriority p )
 	m_class = c;
 }
 
+const char* LogCallback::debugClassToString(sgDebugClass c)
+{
+    switch (c) {
+        case SG_NONE:       return "none";
+        case SG_TERRAIN:    return "terrain";
+        case SG_ASTRO:      return "astro";
+        case SG_FLIGHT:     return "flight";
+        case SG_INPUT:      return "input";
+        case SG_GL:         return "opengl";
+        case SG_VIEW:       return "view";
+        case SG_COCKPIT:    return "cockpit";
+        case SG_GENERAL:    return "general";
+        case SG_MATH:       return "math";
+        case SG_EVENT:      return "event";
+        case SG_AIRCRAFT:   return "aircraft";
+        case SG_AUTOPILOT:  return "autopilot";
+        case SG_IO:         return "io";
+        case SG_CLIPPER:    return "clipper";
+        case SG_NETWORK:    return "network";
+        case SG_ATC:        return "atc";
+        case SG_NASAL:      return "nasal";
+        case SG_INSTR:      return "instruments";
+        case SG_SYSTEMS:    return "systems";
+        case SG_AI:         return "ai";
+        case SG_ENVIRONMENT:return "environment";
+        case SG_SOUND:      return "sound";
+        case SG_NAVAID:     return "navaid";
+        case SG_GUI:        return "gui";
+        case SG_TERRASYNC:  return "terrasync";
+        case SG_PARTICLES:  return "particles";
+        default:            return "unknown";
+    }
+}
+
 } // of namespace simgear
 
 //////////////////////////////////////////////////////////////////////////////
@@ -106,13 +111,13 @@ void LogCallback::setLogLevels( sgDebugClass c, sgDebugPriority p )
 class FileLogCallback : public simgear::LogCallback
 {
 public:
-    FileLogCallback(const std::string& aPath, sgDebugClass c, sgDebugPriority p) :
-	    simgear::LogCallback(c, p),
-        m_file(aPath.c_str(), std::ios_base::out | std::ios_base::trunc)
+    FileLogCallback(const SGPath& aPath, sgDebugClass c, sgDebugPriority p) :
+	    simgear::LogCallback(c, p)
     {
+        m_file.open(aPath, std::ios_base::out | std::ios_base::trunc);
     }
-    
-    virtual void operator()(sgDebugClass c, sgDebugPriority p, 
+
+    virtual void operator()(sgDebugClass c, sgDebugPriority p,
         const char* file, int line, const std::string& message)
     {
         if (!shouldLog(c, p)) return;
@@ -120,28 +125,29 @@ public:
             << ":" << file << ":" << line << ":" << message << std::endl;
     }
 private:
-    std::ofstream m_file;   
+    sg_ofstream m_file;
 };
-   
+
 class StderrLogCallback : public simgear::LogCallback
 {
 public:
     StderrLogCallback(sgDebugClass c, sgDebugPriority p) :
 		simgear::LogCallback(c, p)
     {
-#ifdef SG_WINDOWS
-        AllocConsole(); // but only if we want a console
-        freopen("conin$", "r", stdin);
-        freopen("conout$", "w", stdout);
-        freopen("conout$", "w", stderr);
-#endif
     }
-    
-    virtual void operator()(sgDebugClass c, sgDebugPriority p, 
+
+#if defined (SG_WINDOWS)
+    ~StderrLogCallback()
+    {
+        FreeConsole();
+    }
+#endif
+
+    virtual void operator()(sgDebugClass c, sgDebugPriority p,
         const char* file, int line, const std::string& aMessage)
     {
         if (!shouldLog(c, p)) return;
-        
+
         fprintf(stderr, "%s\n", aMessage.c_str());
         //fprintf(stderr, "%s:%d:%s:%d:%s\n", debugClassToString(c), p,
         //    file, line, aMessage.c_str());
@@ -159,12 +165,12 @@ public:
 		simgear::LogCallback(c, p)
     {
     }
-    
-    virtual void operator()(sgDebugClass c, sgDebugPriority p, 
+
+    virtual void operator()(sgDebugClass c, sgDebugPriority p,
         const char* file, int line, const std::string& aMessage)
     {
         if (!shouldLog(c, p)) return;
-        
+
         std::ostringstream os;
 		os << debugClassToString(c) << ":" << aMessage << std::endl;
 		OutputDebugStringA(os.str().c_str());
@@ -173,13 +179,13 @@ public:
 
 #endif
 
-class LogStreamPrivate : public SGThread
+class logstream::LogStreamPrivate : public SGThread
 {
 private:
     /**
-     * storage of a single log entry. Note this is not used for a persistent
-     * store, but rather for short term buffering between the submitting
-     * and output threads.
+     * storage of a single log entry. This is used to pass log entries from
+     * the various threads to the logging thread, and also to store the startup
+     * entries
      */
     class LogEntry
     {
@@ -188,24 +194,29 @@ private:
             const char* f, int l, const std::string& msg) :
             debugClass(c), debugPriority(p), file(f), line(l),
                 message(msg)
-        {   
+        {
         }
-        
-        sgDebugClass debugClass;
-        sgDebugPriority debugPriority;
+
+        const sgDebugClass debugClass;
+        const sgDebugPriority debugPriority;
         const char* file;
-        int line;
-        std::string message;
+        const int line;
+        const std::string message;
     };
-    
+
+    /**
+     * RAII object to pause the logging thread if it's running, and restart it.
+     * used to safely make configuration changes.
+     */
     class PauseThread
     {
     public:
-        PauseThread(LogStreamPrivate* parent) : m_parent(parent)
+        PauseThread(LogStreamPrivate* parent)
+            : m_parent(parent)
+            , m_wasRunning(m_parent->stop())
         {
-            m_wasRunning = m_parent->stop();
         }
-        
+
         ~PauseThread()
         {
             if (m_wasRunning) {
@@ -214,42 +225,144 @@ private:
         }
     private:
         LogStreamPrivate* m_parent;
-        bool m_wasRunning;
+        const bool m_wasRunning;
     };
+
 public:
     LogStreamPrivate() :
-        m_logClass(SG_ALL), 
-        m_logPriority(SG_ALERT),
-        m_isRunning(false),
-		m_consoleRequested(false)
-    { 
+        m_logClass(SG_ALL),
+        m_logPriority(SG_ALERT)
+    {
+#if defined (SG_WINDOWS)
+        /*
+         * 2016-09-20(RJH) - Reworked console handling
+         * 1) When started from the console use the console (when no --console)
+         * 2) When started from the GUI (with --console) open a new console window
+         * 3) When started from the GUI (without --console) don't open a new console
+         *    window; stdout/stderr will not appear (except in logfiles as they do now)
+         * 4) When started from the Console (with --console) open a new console window
+         * 5) Ensure that IO redirection still works when started from the console
+         * 
+         * Notes:
+         * 1) fgfs needs to be a GUI subsystem app - which it already is
+         * 2) What can't be done is to make the cmd prompt run fgfs synchronously; 
+         * this is only something that can be done via "start /wait fgfs".
+         */
 
-#if !defined(SG_WINDOWS)
-        m_callbacks.push_back(new StderrLogCallback(m_logClass, m_logPriority));
-		m_consoleCallbacks.push_back(m_callbacks.back());
-		m_consoleRequested = true;
+        int stderr_handle_type = GetFileType(GetStdHandle(STD_ERROR_HANDLE));
+        int stdout_handle_type = GetFileType(GetStdHandle(STD_OUTPUT_HANDLE));
+        int stdout_isNull = 0;
+        int stderr_isNull = 0;
+
+        m_stderr_isRedirectedAlready = stderr_handle_type == FILE_TYPE_DISK || stderr_handle_type == FILE_TYPE_PIPE || stderr_handle_type == FILE_TYPE_CHAR;
+        m_stdout_isRedirectedAlready = stdout_handle_type == FILE_TYPE_DISK || stdout_handle_type == FILE_TYPE_PIPE || stdout_handle_type == FILE_TYPE_CHAR;
+
+        /*
+         * We don't want to attach to the console if either stream has been redirected - so in this case ensure that both streams
+         * are redirected as otherwise something will be lost (as Alloc or Attach Console will cause the handles that were bound
+         * to disappear)
+         */
+        if (m_stdout_isRedirectedAlready){
+			if (!m_stderr_isRedirectedAlready) {
+				MessageBox(0, "Redirection only works when you use 2>&1 before using > or |\r\n(e.g. fgfs 2>&1 | more)", "Simgear Error", MB_OK | MB_ICONERROR);
+				exit(3);
+			}
+        } else {
+            /*
+            * Attempt to attach to the console process of the parent process; when launched from cmd.exe this should be the console, 
+            * when launched via the RUN menu explorer, or another GUI app that wasn't started from the console this will fail.
+            * When it fails we will redirect to the NUL device. This is to ensure that we have valid streams.
+            * Later on in the initialisation sequence the --console option will be processed and this will cause the requestConsole() to
+            * always open a new console, except for streams that are redirected. The same rules apply there, if both streams are redirected
+            * the console will be opened, and it will contain a message to indicate that no output will be present because the streams are redirected
+            */
+            if (AttachConsole(ATTACH_PARENT_PROCESS) == 0) {
+                /*
+                * attach failed - so ensure that the streams are bound to the null device - but only when not already redirected
+                */
+                if (!m_stdout_isRedirectedAlready)
+                {
+                    stdout_isNull = true;
+                    freopen("NUL", "w", stdout);
+                }
+
+                if (!m_stderr_isRedirectedAlready)
+                {
+                    stderr_isNull = true;
+                    freopen("NUL", "w", stderr);
+                }
+            }
+            /*
+            * providing that AttachConsole succeeded - we can then either reopen the stream onto the console, or use
+            * _fdopen to attached to the currently redirected (and open stream)
+            */
+            if (!stdout_isNull){
+                if (!m_stdout_isRedirectedAlready)
+                    freopen("conout$", "w", stdout);
+                else 
+                    /*
+                    * for already redirected streams we need to attach the stream to the OS handle that is open.
+                    * - this comes from part of the answer http://stackoverflow.com/a/13841522
+                    *   _open_osfhandle returns an FD for the Win32 Handle, which is then opened using fdopen and
+                    *   hopefully safely assigned to the stream (although it does look wrong to me it works)
+                    * Removing this bit will stop pipes and command line redirection (> 2> and 2>&1 from working)
+                    */
+                    *stdout = *_fdopen(_open_osfhandle((intptr_t) GetStdHandle(STD_OUTPUT_HANDLE), _O_WRONLY), "a");
+            }
+
+            if (!stderr_isNull){
+                if (!m_stderr_isRedirectedAlready)
+                    freopen("conout$", "w", stderr);
+                else
+                    *stderr = *_fdopen(_open_osfhandle((intptr_t) GetStdHandle(STD_ERROR_HANDLE), _O_WRONLY), "a");
+            }
+        }
+        //http://stackoverflow.com/a/25927081
+        //Clear the error state for each of the C++ standard stream objects. 
+        std::wcout.clear();
+        std::cout.clear();
+        std::wcerr.clear();
+        std::cerr.clear();
 #endif
 
+        m_callbacks.push_back(new StderrLogCallback(m_logClass, m_logPriority));
+        m_consoleCallbacks.push_back(m_callbacks.back());
 #if defined (SG_WINDOWS) && !defined(NDEBUG)
 		m_callbacks.push_back(new WinDebugLogCallback(m_logClass, m_logPriority));
 		m_consoleCallbacks.push_back(m_callbacks.back());
 #endif
     }
-                    
+
+    ~LogStreamPrivate()
+    {
+        for (simgear::LogCallback* cb : m_callbacks) {
+            delete cb;
+        }
+    }
+
     SGMutex m_lock;
     SGBlockingQueue<LogEntry> m_entries;
-    
+
+    // log entries posted during startup
+    std::vector<LogEntry> m_startupEntries;
+    bool m_startupLogging = false;
+
     typedef std::vector<simgear::LogCallback*> CallbackVec;
-    CallbackVec m_callbacks;    
+    CallbackVec m_callbacks;
     /// subset of callbacks which correspond to stdout / console,
 	/// and hence should dynamically reflect console logging settings
 	CallbackVec m_consoleCallbacks;
 
     sgDebugClass m_logClass;
     sgDebugPriority m_logPriority;
-    bool m_isRunning;
-	bool m_consoleRequested;
-    
+    bool m_isRunning = false;
+#if defined (SG_WINDOWS)
+    // track whether the console was redirected on launch (in the constructor, which is called early on)
+    bool m_stderr_isRedirectedAlready = false;
+    bool m_stdout_isRedirectedAlready = false;
+#endif
+    bool m_developerMode = false;
+
     void startLog()
     {
         SGGuard<SGMutex> g(m_lock);
@@ -257,7 +370,17 @@ public:
         m_isRunning = true;
         start();
     }
-    
+
+    void setStartupLoggingEnabled(bool on)
+    {
+        if (m_startupLogging == on) {
+            return;
+        }
+
+        m_startupLogging = on;
+        m_startupEntries.clear();
+    }
+
     virtual void run()
     {
         while (1) {
@@ -267,37 +390,50 @@ public:
             if ((entry.debugClass == SG_NONE) && !strcmp(entry.file, "done")) {
                 return;
             }
-            
+
+            if (m_startupLogging) {
+                // save to the startup list for not-yet-added callbacks to
+                // pull down on startup
+                m_startupEntries.push_back(entry);
+            }
+
             // submit to each installed callback in turn
-            BOOST_FOREACH(simgear::LogCallback* cb, m_callbacks) {
+            for (simgear::LogCallback* cb : m_callbacks) {
                 (*cb)(entry.debugClass, entry.debugPriority,
                     entry.file, entry.line, entry.message);
-            }           
+            }
         } // of main thread loop
     }
-    
+
     bool stop()
     {
         SGGuard<SGMutex> g(m_lock);
         if (!m_isRunning) {
             return false;
         }
-        
+
         // log a special marker value, which will cause the thread to wakeup,
         // and then exit
         log(SG_NONE, SG_ALERT, "done", -1, "");
         join();
-        
+
         m_isRunning = false;
         return true;
     }
-    
+
     void addCallback(simgear::LogCallback* cb)
     {
         PauseThread pause(this);
         m_callbacks.push_back(cb);
+
+        // we clear startup entries not using this, so always safe to run
+        // this code, container will simply be empty
+        for (auto entry : m_startupEntries) {
+            (*cb)(entry.debugClass, entry.debugPriority,
+               entry.file, entry.line, entry.message);
+        }
     }
-    
+
     void removeCallback(simgear::LogCallback* cb)
     {
         PauseThread pause(this);
@@ -306,7 +442,7 @@ public:
             m_callbacks.erase(it);
         }
     }
-    
+
     void setLogLevels( sgDebugClass c, sgDebugPriority p )
     {
         PauseThread pause(this);
@@ -316,129 +452,279 @@ public:
 	        cb->setLogLevels(c, p);
 		}
     }
-    
+
     bool would_log( sgDebugClass c, sgDebugPriority p ) const
     {
+        p = translatePriority(p);
         if (p >= SG_INFO) return true;
         return ((c & m_logClass) != 0 && p >= m_logPriority);
     }
-    
+
     void log( sgDebugClass c, sgDebugPriority p,
             const char* fileName, int line, const std::string& msg)
     {
+        p = translatePriority(p);
         LogEntry entry(c, p, fileName, line, msg);
         m_entries.push(entry);
     }
 
-	void requestConsole()
-	{
-		PauseThread pause(this);
-		if (m_consoleRequested) {
-			return;
-		}
+    sgDebugPriority translatePriority(sgDebugPriority in) const
+    {
+        if (in == SG_DEV_WARN) {
+            return m_developerMode ? SG_WARN : SG_DEBUG;
+        }
 
-		m_consoleRequested = true;
-		m_callbacks.push_back(new StderrLogCallback(m_logClass, m_logPriority));
-		m_consoleCallbacks.push_back(m_callbacks.back());
-	}
+        if (in == SG_DEV_ALERT) {
+            return m_developerMode ? SG_POPUP : SG_WARN;
+        }
+
+        return in;
+    }
 };
 
 /////////////////////////////////////////////////////////////////////////////
 
-static logstream* global_logstream = NULL;
-static LogStreamPrivate* global_privateLogstream = NULL;
+static std::unique_ptr<logstream> global_logstream;
+static SGMutex global_logStreamLock;
 
 logstream::logstream()
 {
-    global_privateLogstream = new LogStreamPrivate;
-    global_privateLogstream->startLog();
+    d.reset(new LogStreamPrivate);
+    d->startLog();
+}
+
+logstream::~logstream()
+{
+    popup_msgs.clear();
+    d->stop();
 }
 
 void
 logstream::setLogLevels( sgDebugClass c, sgDebugPriority p )
 {
-    global_privateLogstream->setLogLevels(c, p);
+    d->setLogLevels(c, p);
 }
 
+void logstream::setDeveloperMode(bool devMode)
+{
+    d->m_developerMode = devMode;
+}
+
+
 void
 logstream::addCallback(simgear::LogCallback* cb)
-{   
-    global_privateLogstream->addCallback(cb);
+{
+    d->addCallback(cb);
 }
 
 void
 logstream::removeCallback(simgear::LogCallback* cb)
-{   
-    global_privateLogstream->removeCallback(cb);
+{
+    d->removeCallback(cb);
 }
 
 void
 logstream::log( sgDebugClass c, sgDebugPriority p,
         const char* fileName, int line, const std::string& msg)
 {
-    global_privateLogstream->log(c, p, fileName, line, msg);
+    d->log(c, p, fileName, line, msg);
+}
+
+
+void logstream::hexdump(sgDebugClass c, sgDebugPriority p, const char* fileName, int line, const void *mem, unsigned int len, unsigned int columns)
+{
+    unsigned int i, j;
+    char temp[3000], temp1[3000];
+    *temp = 0;
+
+    for (i = 0; i < len + ((len % columns) ? (columns - len % columns) : 0); i++)
+    {
+        if (strlen(temp) > 500) return;
+        /* print offset */
+        if (i % columns == 0)
+        {
+            sprintf(temp1, "0x%06x: ", i);
+            strcat(temp, temp1);
+        }
+
+        /* print hex data */
+        if (i < len)
+        {
+            sprintf(temp1, "%02x ", 0xFF & ((char*)mem)[i]);
+            strcat(temp, temp1);
+        }
+        else /* end of block, just aligning for ASCII dump */
+        {
+            strcat(temp, "   ");
+        }
+
+        /* print ASCII dump */
+        if (i % columns == (columns - 1))
+        {
+            for (j = i - (columns - 1); j <= i; j++)
+            {
+                if (j >= len) /* end of block, not really printing */
+                {
+                    strcat(temp, " ");
+                }
+                else if (((((char*)mem)[j]) & (char)0x7f) > 32) /* printable char */
+                {
+                    char t2[2];
+                    t2[0] = 0xFF & ((char*)mem)[j];
+                    t2[1] = 0;
+                    strcat(temp, t2);
+                }
+                else /* other char */
+                {
+                    strcat(temp, ".");
+                }
+            }
+            log(c, p, fileName, line, temp );
+            *temp = 0;
+        }
+    }
+}
+
+void
+logstream::popup( const std::string& msg)
+{
+    popup_msgs.push_back(msg);
+}
+
+std::string
+logstream::get_popup()
+{
+    std::string rv = "";
+    if (!popup_msgs.empty())
+    {
+        rv = popup_msgs.front();
+        popup_msgs.erase(popup_msgs.begin());
+    }
+    return rv;
+}
+
+bool
+logstream::has_popup()
+{
+    return (popup_msgs.size() > 0) ? true : false;
 }
 
 bool
 logstream::would_log( sgDebugClass c, sgDebugPriority p ) const
 {
-    return global_privateLogstream->would_log(c,p);
+    return d->would_log(c,p);
 }
 
 sgDebugClass
 logstream::get_log_classes() const
 {
-    return global_privateLogstream->m_logClass;
+    return d->m_logClass;
 }
-    
+
 sgDebugPriority
 logstream::get_log_priority() const
 {
-    return global_privateLogstream->m_logPriority;
+    return d->m_logPriority;
 }
 
 void
 logstream::set_log_priority( sgDebugPriority p)
 {
-    global_privateLogstream->setLogLevels(global_privateLogstream->m_logClass, p);
+    d->setLogLevels(d->m_logClass, p);
 }
-    
+
 void
 logstream::set_log_classes( sgDebugClass c)
 {
-    global_privateLogstream->setLogLevels(c, global_privateLogstream->m_logPriority);
+    d->setLogLevels(c, d->m_logPriority);
 }
 
+
 logstream&
 sglog()
 {
     // Force initialization of cerr.
     static std::ios_base::Init initializer;
-    
+
     // http://www.aristeia.com/Papers/DDJ_Jul_Aug_2004_revised.pdf
     // in the absence of portable memory barrier ops in Simgear,
     // let's keep this correct & safe
-    static SGMutex m;
-    SGGuard<SGMutex> g(m);
-    
+    SGGuard<SGMutex> g(global_logStreamLock);
+
     if( !global_logstream )
-        global_logstream = new logstream();
-    return *global_logstream;
+        global_logstream.reset(new logstream);
+    return *(global_logstream.get());
 }
 
 void
 logstream::logToFile( const SGPath& aPath, sgDebugClass c, sgDebugPriority p )
 {
-    global_privateLogstream->addCallback(new FileLogCallback(aPath.str(), c, p));
+    d->addCallback(new FileLogCallback(aPath, c, p));
 }
 
+void logstream::setStartupLoggingEnabled(bool enabled)
+{
+    d->setStartupLoggingEnabled(enabled);
+}
+
+void logstream::requestConsole()
+{
+#if defined (SG_WINDOWS)
+    const bool stderrAlreadyRedirected = d->m_stderr_isRedirectedAlready;
+    const bool stdoutAlreadyRedirected = d->m_stdout_isRedirectedAlready;
+
+    /*
+     * 2016-09-20(RJH) - Reworked console handling
+     * This is part of the reworked console handling for Win32. This is for building as a Win32 GUI Subsystem where no
+     * console is allocated on launch. If building as a console app then the startup will ensure that a console is created - but
+     * we don't need to handle that.
+     * The new handling is quite simple:
+     *              1. The constructor will ensure that these streams exists. It will attach to the
+     *                 parent command prompt if started from the command prompt, otherwise the
+     *                 stdout/stderr will be bound to the NUL device.
+     *              2. with --console a window will always appear regardless of where the process was
+     *                 started from. Any non redirected streams will be redirected
+     *              3. You cannot use --console and either redirected stream.
+     *
+     * This is called after the Private Log Stream constructor so we need to undo any console that it has attached to.
+     */
+
+    if (!stderrAlreadyRedirected && !stdoutAlreadyRedirected) {
+        FreeConsole();
+        if (AllocConsole()) {
+            if (!stdoutAlreadyRedirected)
+                freopen("conout$", "w", stdout);
+
+            if (!stderrAlreadyRedirected)
+                freopen("conout$", "w", stderr);
+
+            //http://stackoverflow.com/a/25927081
+            //Clear the error state for each of the C++ standard stream objects.
+            std::wcout.clear();
+            std::cout.clear();
+            std::wcerr.clear();
+            std::cerr.clear();
+        }
+    } else {
+        MessageBox(0, "--console ignored because stdout or stderr redirected with > or 2>", "Simgear Error", MB_OK | MB_ICONERROR);
+    }
+#endif
+}
+
+
 namespace simgear
 {
 
 void requestConsole()
+{ 
+    sglog().requestConsole();
+}
+
+
+void shutdownLogging()
 {
-	sglog(); // force creation
-	global_privateLogstream->requestConsole();
+    SGGuard<SGMutex> g(global_logStreamLock);
+    global_logstream.reset();
 }
 
 } // of namespace simgear

simgear/debug/logstream.hxx

@@ -29,7 +29,9 @@
 #include <simgear/debug/debug_types.h>
 
 #include <sstream>
- 
+#include <vector>
+#include <memory>
+
 // forward decls
 class SGPath;
       
@@ -48,6 +50,8 @@ protected:
 	LogCallback(sgDebugClass c, sgDebugPriority p);
 
 	bool shouldLog(sgDebugClass c, sgDebugPriority p) const;
+
+    static const char* debugClassToString(sgDebugClass c);
 private:
 	sgDebugClass m_class;
 	sgDebugPriority m_priority;
@@ -59,7 +63,9 @@ private:
  * moment - on other plaforms it's a no-op
  */
 void requestConsole();
-     
+
+void shutdownLogging();
+
 } // of namespace simgear
 
 /**
@@ -68,7 +74,17 @@ void requestConsole();
 class logstream
 {
 public:
+    ~logstream();
+    
     static void initGlobalLogstream();
+
+    /**
+     * Helper force a console on platforms where it might optional, when
+     * we need to show a console. This basically means Windows at the
+     * moment - on other plaforms it's a no-op
+     */
+    void requestConsole();
+
     /**
      * Set the global log class and priority level.
      * @param c debug class
@@ -88,12 +104,42 @@ public:
     
     sgDebugPriority get_log_priority() const;
 
+    /**
+     * set developer mode on/off. In developer mode, SG_DEV_WARN messags
+     * are treated as warnings. In normal (non-developer) mode they are
+     * treated as SG_DEBUG.
+     */
+    void setDeveloperMode(bool devMode);
+
     /**
      * the core logging method
      */
     void log( sgDebugClass c, sgDebugPriority p,
             const char* fileName, int line, const std::string& msg);
 
+    /**
+    * output formatted hex dump of memory block
+    */
+    void hexdump(sgDebugClass c, sgDebugPriority p, const char* fileName, int line, const void *mem, unsigned int len, unsigned int columns = 16);
+
+
+    /**
+     * support for the SG_POPUP logging class
+     * set the content of the popup message
+     */
+    void popup( const std::string& msg);
+
+    /**
+     * retrieve the contents of the popup message and clear it's internal
+     * content. The return value may be an empty string.
+     */
+    std::string get_popup();
+
+    /**
+     * return true if a new popup message is available. false otherwise.
+     */
+    bool has_popup();
+
    /**
     * \relates logstream
     * Return the one and only logstream instance.
@@ -112,9 +158,21 @@ public:
      
     void removeCallback(simgear::LogCallback* cb);
 
+    /**
+     * optionally record all entries and submit them to new log callbacks that
+     * are added. This allows simplified logging configuration, but still including
+     * early startup information in all logs.
+     */
+    void setStartupLoggingEnabled(bool enabled);
 private:
     // constructor
     logstream();
+
+    std::vector<std::string> popup_msgs;
+
+    class LogStreamPrivate;
+
+    std::unique_ptr<LogStreamPrivate> d;
 };
 
 logstream& sglog();
@@ -127,16 +185,18 @@ logstream& sglog();
  * @param P priority
  * @param M message
  */
-#ifdef FG_NDEBUG
-# define SG_LOG(C,P,M)
-#else
-# define SG_LOG(C,P,M) do {                     \
-	if(sglog().would_log(C,P)) {                      \
-        std::ostringstream os;                             \
-        os << M;                                       \
+# define SG_LOGX(C,P,M) \
+    do { if(sglog().would_log(C,P)) {                         \
+        std::ostringstream os; os << M;                  \
         sglog().log(C, P, __FILE__, __LINE__, os.str()); \
-    } \
-} while(0)
+        if ((P) == SG_POPUP) sglog().popup(os.str());    \
+    } } while(0)
+#ifdef FG_NDEBUG
+# define SG_LOG(C,P,M)	do { if((P) == SG_POPUP) SG_LOGX(C,P,M) } while(0)
+# define SG_HEXDUMP(C,P,MEM,LEN)
+#else
+# define SG_LOG(C,P,M)	SG_LOGX(C,P,M)
+# define SG_LOG_HEXDUMP(C,P,MEM,LEN) if(sglog().would_log(C,P)) sglog().hexdump(C, P, __FILE__, __LINE__, MEM, LEN)
 #endif
 
 #define SG_ORIGIN __FILE__ ":" SG_STRINGIZE(__LINE__)

simgear/embedded_resources/CMakeLists.txt

@@ -0,0 +1,18 @@
+include (SimGearComponent)
+
+set(HEADERS EmbeddedResource.hxx
+            EmbeddedResourceManager.hxx
+            EmbeddedResourceProxy.hxx)
+set(SOURCES EmbeddedResource.cxx
+            EmbeddedResourceManager.cxx
+            EmbeddedResourceProxy.cxx)
+
+simgear_component(embedded_resources embedded_resources
+                  "${SOURCES}" "${HEADERS}")
+
+if(ENABLE_TESTS)
+    add_executable(test_embedded_resources embedded_resources_test.cxx)
+    target_link_libraries(test_embedded_resources ${TEST_LIBS})
+    add_test(embedded_resources
+             ${EXECUTABLE_OUTPUT_PATH}/test_embedded_resources)
+endif(ENABLE_TESTS)

simgear/embedded_resources/EmbeddedResource.cxx

@@ -0,0 +1,265 @@
+// -*- coding: utf-8 -*-
+//
+// EmbeddedResource.cxx ---  Class for pointing to/accessing an embedded resource
+// Copyright (C) 2017  Florent Rougon
+//
+// 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., 51 Franklin Street, Fifth Floor, Boston,
+// MA  02110-1301  USA.
+
+#include <simgear_config.h>
+
+#include <string>
+#include <iosfwd>
+#include <ios>                  // std::streamsize
+#include <ostream>
+#include <memory>               // std::unique_ptr
+#include <utility>              // std::move()
+#include <algorithm>            // std::min()
+#include <limits>               // std::numeric_limits
+#include <cstddef>              // std::size_t, std::ptrdiff_t
+
+#include <simgear/structure/exception.hxx>
+#include <simgear/io/iostreams/CharArrayStream.hxx>
+#include <simgear/io/iostreams/zlibstream.hxx>
+#include "EmbeddedResource.hxx"
+
+using std::string;
+using std::unique_ptr;
+
+// Inspired by <http://stackoverflow.com/a/21174979/4756009>
+template<typename Derived, typename Base>
+static unique_ptr<Derived> static_unique_ptr_cast(unique_ptr<Base> p)
+{
+  auto d = static_cast<Derived *>(p.release());
+  return unique_ptr<Derived>(d);
+}
+
+
+namespace simgear
+{
+
+// ***************************************************************************
+// *                     AbstractEmbeddedResource class                      *
+// ***************************************************************************
+
+AbstractEmbeddedResource::AbstractEmbeddedResource(const char *data,
+                                                   std::size_t size)
+  : _data(data),
+    _size(size)
+{ }
+
+const char *AbstractEmbeddedResource::rawPtr() const
+{
+  return _data;
+}
+
+std::size_t AbstractEmbeddedResource::rawSize() const
+{
+  return _size;
+}
+
+string AbstractEmbeddedResource::str() const
+{
+  if (_size > std::numeric_limits<string::size_type>::max()) {
+    throw sg_range_exception(
+      "Resource too large to fit in an std::string (size: " +
+      std::to_string(_size) + " bytes)");
+  }
+
+  return string(_data, _size);
+}
+
+// ***************************************************************************
+// *                        RawEmbeddedResource class                        *
+// ***************************************************************************
+
+RawEmbeddedResource::RawEmbeddedResource(const char *data, std::size_t size)
+  : AbstractEmbeddedResource(data, size)
+{ }
+
+AbstractEmbeddedResource::CompressionType
+RawEmbeddedResource::compressionType() const
+{
+  return AbstractEmbeddedResource::CompressionType::NONE;
+}
+
+string RawEmbeddedResource::compressionDescr() const
+{
+  return string("none");
+}
+
+unique_ptr<std::streambuf> RawEmbeddedResource::streambuf() const
+{
+  // This is a read-only variant of CharArrayStreambuf
+  return unique_ptr<std::streambuf>(
+    new ROCharArrayStreambuf(rawPtr(), rawSize()));
+}
+
+unique_ptr<std::istream> RawEmbeddedResource::istream() const
+{
+  return unique_ptr<std::istream>(new CharArrayIStream(rawPtr(), rawSize()));
+}
+
+// ***************************************************************************
+// *                       ZlibEmbeddedResource class                        *
+// ***************************************************************************
+
+ZlibEmbeddedResource::ZlibEmbeddedResource(const char *data,
+                                           std::size_t compressedSize,
+                                           std::size_t uncompressedSize)
+  : AbstractEmbeddedResource(data, compressedSize),
+    _uncompressedSize(uncompressedSize),
+    _inBuf(nullptr),
+    _inBufSize(262144),         // adjusted below in the constructor body
+    _outBuf(nullptr),
+    _outBufSize(262144),
+    _putbackSize(0)             // default for best performance
+{
+  static_assert(262144 <= std::numeric_limits<std::size_t>::max(),
+                "The std::size_t type is unexpectedly small.");
+  // No need to use an input buffer (where compressed data chunks are put for
+  // zlib to read and decompress) larger than the whole compressed resource!
+  _inBufSize = std::min(rawSize(), _inBufSize);
+}
+
+AbstractEmbeddedResource::CompressionType
+ZlibEmbeddedResource::compressionType() const
+{ return AbstractEmbeddedResource::CompressionType::ZLIB; }
+
+string ZlibEmbeddedResource::compressionDescr() const
+{ return string("zlib"); }
+
+std::size_t ZlibEmbeddedResource::uncompressedSize() const
+{ return _uncompressedSize; }
+
+char* ZlibEmbeddedResource::getInputBufferStart()
+{ return _inBuf; }
+
+void ZlibEmbeddedResource::setInputBufferStart(char* inBuf)
+{ _inBuf = inBuf; }
+
+std::size_t ZlibEmbeddedResource::getInputBufferSize()
+{ return _inBufSize; }
+
+void ZlibEmbeddedResource::setInputBufferSize(std::size_t size)
+{ _inBufSize = size; }
+
+char* ZlibEmbeddedResource::getOutputBufferStart()
+{ return _outBuf; }
+
+void ZlibEmbeddedResource::setOutputBufferStart(char* outBuf)
+{ _outBuf = outBuf; }
+
+std::size_t ZlibEmbeddedResource::getOutputBufferSize()
+{ return _outBufSize; }
+
+void ZlibEmbeddedResource::setOutputBufferSize(std::size_t size)
+{ _outBufSize = size; }
+
+std::size_t ZlibEmbeddedResource::getPutbackSize()
+{ return _putbackSize; }
+
+void ZlibEmbeddedResource::setPutbackSize(std::size_t size)
+{ _putbackSize = size; }
+
+unique_ptr<std::streambuf> ZlibEmbeddedResource::streambuf() const
+{
+  unique_ptr<CharArrayIStream> rawReaderIStream(
+    new CharArrayIStream(rawPtr(), rawSize()));
+
+  return unique_ptr<std::streambuf>(
+    new ZlibDecompressorIStreambuf(
+      std::move(rawReaderIStream),
+      SGPath(),                   // rawReaderIStream isn't bound to a file
+      ZLibCompressionFormat::ZLIB,
+      _inBuf, _inBufSize, _outBuf, _outBufSize, _putbackSize));
+}
+
+unique_ptr<std::istream> ZlibEmbeddedResource::istream() const
+{
+  unique_ptr<CharArrayIStream> rawReaderIStream(
+    new CharArrayIStream(rawPtr(), rawSize()));
+
+  return unique_ptr<std::istream>(
+    new ZlibDecompressorIStream(
+      std::move(rawReaderIStream),
+      SGPath(),                   // rawReaderIStream isn't bound to a file
+      ZLibCompressionFormat::ZLIB,
+      _inBuf, _inBufSize, _outBuf, _outBufSize, _putbackSize));
+}
+
+std::string ZlibEmbeddedResource::str() const
+{
+  static constexpr std::size_t bufSize = 65536;
+  static_assert(bufSize <= std::numeric_limits<std::streamsize>::max(),
+                "Type std::streamsize is unexpectedly small");
+  static_assert(bufSize <= std::numeric_limits<string::size_type>::max(),
+                "Type std::string::size_type is unexpectedly small");
+  unique_ptr<char[]> buf(new char[bufSize]);
+
+  auto decompressor =
+    static_unique_ptr_cast<ZlibDecompressorIStream>(istream());
+  std::streamsize nbCharsRead;
+  string result;
+
+  if (_uncompressedSize > std::numeric_limits<string::size_type>::max()) {
+    throw sg_range_exception(
+      "Resource too large to fit in an std::string (uncompressed size: "
+      + std::to_string(_uncompressedSize) + " bytes)");
+  } else {
+    result.reserve(static_cast<string::size_type>(_uncompressedSize));
+  }
+
+  do {
+    decompressor->read(buf.get(), bufSize);
+    nbCharsRead = decompressor->gcount();
+
+    if (nbCharsRead > 0) {
+      result.append(buf.get(), nbCharsRead);
+    }
+  } while (*decompressor);
+
+  // decompressor->fail() would *not* indicate an error, due to the semantics
+  // of std::istream::read().
+  if (decompressor->bad()) {
+    throw sg_io_exception("Error while extracting a compressed resource");
+  }
+
+  return result;
+}
+
+// ***************************************************************************
+// *                       Stream insertion operators                        *
+// ***************************************************************************
+std::ostream& operator<<(std::ostream& os,
+                         const RawEmbeddedResource& resource)
+{  // This won't escape double quotes, backslashes, etc. in resource.str().
+  return os << "RawEmbeddedResource:\n"
+    "  compressionType = \"" << resource.compressionDescr() << "\"\n"
+    "  rawPtr = " << (void*) resource.rawPtr() << "\n"
+    "  rawSize = " << resource.rawSize();
+}
+
+std::ostream& operator<<(std::ostream& os,
+                         const ZlibEmbeddedResource& resource)
+{  // This won't escape double quotes, backslashes, etc. in resource.str().
+  return os << "ZlibEmbeddedResource:\n"
+    "  compressionType = \"" << resource.compressionDescr() << "\"\n"
+    "  rawPtr = " << (void*) resource.rawPtr() << "\n"
+    "  rawSize = " << resource.rawSize() << "\n"
+    "  uncompressedSize = " << resource.uncompressedSize();
+}
+
+} // of namespace simgear

simgear/embedded_resources/EmbeddedResource.hxx

@@ -0,0 +1,163 @@
+// -*- coding: utf-8 -*-
+//
+// EmbeddedResource.hxx --- Class for pointing to/accessing an embedded resource
+// Copyright (C) 2017  Florent Rougon
+//
+// 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., 51 Franklin Street, Fifth Floor, Boston,
+// MA  02110-1301  USA.
+
+#ifndef FG_EMBEDDEDRESOURCE_HXX
+#define FG_EMBEDDEDRESOURCE_HXX
+
+#include <iosfwd>
+#include <string>
+#include <ostream>
+#include <memory>               // std::unique_ptr
+#include <cstddef>              // std::size_t, std::ptrdiff_t
+
+#include <simgear/io/iostreams/zlibstream.hxx>
+
+
+namespace simgear
+{
+
+// Abstract base class for embedded resources
+class AbstractEmbeddedResource
+{
+public:
+  enum class CompressionType {
+    NONE = 0,
+    ZLIB
+  };
+
+  // Constructor.
+  //
+  // 'data' and 'size' indicate the resource contents. There is no requirement
+  // of null-termination, including for text data (given how
+  // EmbeddedResourceManager::getString() works, including a null terminator
+  // for text contents is actually counter-productive). The data may be of
+  // arbitrary type and size: binary, text, whatever. The constructed object
+  // (for derived classes since this one is abstract) does *not* hold a copy
+  // of the data, it just keeps a pointer to it and provides methods to access
+  // it. The data must therefore remain available as long as the object is in
+  // use---this class was designed for use with data stored in static
+  // variables.
+  explicit AbstractEmbeddedResource(const char *data, std::size_t size);
+  AbstractEmbeddedResource(const AbstractEmbeddedResource&) = default;
+  AbstractEmbeddedResource(AbstractEmbeddedResource&&) = default;
+  AbstractEmbeddedResource& operator=(const AbstractEmbeddedResource&) = default;
+  AbstractEmbeddedResource& operator=(AbstractEmbeddedResource&&) = default;
+  virtual ~AbstractEmbeddedResource() = default;
+
+  // Return the pointer to beginning-of-resource contents---the same that was
+  // passed to the constructor.
+  const char *rawPtr() const;
+  // Return the resource size, as passed to the constructor. For a compressed
+  // resource, this is the compressed size; such resources provide an
+  // additional uncompressedSize() method.
+  std::size_t rawSize() const;
+
+  // Return an std::string object containing a copy of the resource contents.
+  // For a compressed resource, this is the data obtained after decompression.
+  virtual std::string str() const;
+  // Return an std::streambuf instance providing read-only access to the
+  // resource contents (in uncompressed form for compressed resources). This
+  // allows memory-friendly access to large resources by enabling incremental
+  // processing with transparent decompression for compressed resources.
+  virtual std::unique_ptr<std::streambuf> streambuf() const = 0;
+  // Return an std::istream instance providing read-only access to the
+  // resource contents (in uncompressed form for compressed resources).
+  //
+  // The same remark as for streambuf() applies. std::istream is simply a
+  // higher-level interface than std::streambuf, otherwise both allow the same
+  // kind of processing.
+  virtual std::unique_ptr<std::istream> istream() const = 0;
+
+  // Return the resource compression type.
+  virtual CompressionType compressionType() const = 0;
+  // Return a string description of the resource compression type. Examples:
+  // "none", "zlib".
+  virtual std::string compressionDescr() const = 0;
+
+private:
+  // Pointer to the start of resource contents
+  const char *_data;
+  // Size of resource contents, in bytes
+  std::size_t _size;
+};
+
+// Class to describe an uncompressed resource. See AbstractEmbeddedResource.
+class RawEmbeddedResource : public AbstractEmbeddedResource
+{
+public:
+  explicit RawEmbeddedResource(const char *data, std::size_t size);
+
+  AbstractEmbeddedResource::CompressionType compressionType() const override;
+  std::string compressionDescr() const override;
+
+  // The str() method is inherited from AbstractEmbeddedResource
+  std::unique_ptr<std::streambuf> streambuf() const override;
+  std::unique_ptr<std::istream> istream() const override;
+};
+
+// Class to describe a zlib-compressed resource.
+//
+// Instances of this class point to resource contents stored in the stream
+// format documented in RFC 1950.
+class ZlibEmbeddedResource : public AbstractEmbeddedResource
+{
+public:
+  explicit ZlibEmbeddedResource(const char *data, std::size_t compressedSize,
+                                std::size_t uncompressedSize);
+
+  AbstractEmbeddedResource::CompressionType compressionType() const override;
+  std::string compressionDescr() const override;
+  // Return the resource uncompressed size, in bytes.
+  std::size_t uncompressedSize() const;
+
+  std::string str() const override;
+  std::unique_ptr<std::streambuf> streambuf() const override;
+  std::unique_ptr<std::istream> istream() const override;
+
+  // Getters and setters for parameters used in streambuf() and istream().
+  // Calling any of the setters affects the subsequent streambuf() and
+  // istream() calls.
+  char* getInputBufferStart();
+  void setInputBufferStart(char* inBuf);
+  std::size_t getInputBufferSize();
+  void setInputBufferSize(std::size_t size);
+  char* getOutputBufferStart();
+  void setOutputBufferStart(char* outBuf);
+  std::size_t getOutputBufferSize();
+  void setOutputBufferSize(std::size_t size);
+  std::size_t getPutbackSize();
+  void setPutbackSize(std::size_t size);
+
+private:
+  std::size_t _uncompressedSize;
+  char* _inBuf;
+  std::size_t _inBufSize;
+  char* _outBuf;
+  std::size_t _outBufSize;
+  std::size_t _putbackSize;
+};
+
+// These functions are essentially intended for troubleshooting purposes.
+std::ostream& operator<<(std::ostream&, const RawEmbeddedResource&);
+std::ostream& operator<<(std::ostream&, const ZlibEmbeddedResource&);
+
+} // of namespace simgear
+
+#endif  // of FG_EMBEDDEDRESOURCE_HXX

simgear/embedded_resources/EmbeddedResourceManager.cxx

@@ -0,0 +1,235 @@
+// -*- coding: utf-8 -*-
+//
+// EmbeddedResourceManager.cxx --- Manager class for resources embedded in an
+//                                 executable
+// Copyright (C) 2017  Florent Rougon
+//
+// 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., 51 Franklin Street, Fifth Floor, Boston,
+// MA  02110-1301  USA.
+
+#include <simgear_config.h>
+
+#include <memory>
+#include <utility>              // std::move()
+#include <string>
+#include <vector>
+#include <cstdlib>
+#include <cassert>
+
+#include <simgear/structure/exception.hxx>
+#include "EmbeddedResource.hxx"
+#include "EmbeddedResourceManager.hxx"
+#include "EmbeddedResourceManager_private.hxx"
+
+using std::string;
+using std::shared_ptr;
+using std::unique_ptr;
+
+namespace simgear
+{
+
+static unique_ptr<EmbeddedResourceManager> staticInstance;
+
+// ***************************************************************************
+// *                      EmbeddedResourceManager::Impl                      *
+// ***************************************************************************
+EmbeddedResourceManager::Impl::Impl()
+  : dirty(true)
+{ }
+
+void
+EmbeddedResourceManager::Impl::rehash()
+{
+  // Update the list of resource pools to search when looking up a resource.
+  // This allows to optimize resource lookup: no need to parse, split and hash
+  // the same locale string every time to find the corresponding resource
+  // pools.
+  poolSearchList = listOfResourcePoolsToSearch(selectedLocale);
+  dirty = false;
+}
+
+string
+EmbeddedResourceManager::Impl::getLocale() const
+{
+  return selectedLocale;
+}
+
+string
+EmbeddedResourceManager::Impl::selectLocale(const std::string& locale)
+{
+  string previousLocale = std::move(selectedLocale);
+  selectedLocale = locale;
+  dirty = true;
+
+  return previousLocale;
+}
+
+// Static method
+std::vector<string>
+EmbeddedResourceManager::Impl::localesSearchList(const string& locale)
+{
+  std::vector<string> result;
+
+  if (locale.empty()) {
+    result.push_back(string()); // only the default locale
+  } else {
+    std::size_t sepIdx = locale.find_first_of('_');
+
+    if (sepIdx == string::npos) {
+      // Try the given “locale” first (e.g., fr), then the default locale
+      result = std::vector<string>({locale, string()});
+    } else {
+      string langCode = locale.substr(0, sepIdx);
+      // Try the given “locale” first (e.g., fr_FR), then the language code
+      // (e.g., fr) and finally the default locale
+      result = std::vector<string>({locale, langCode, string()});
+    }
+  }
+
+  return result;
+}
+
+auto
+EmbeddedResourceManager::Impl::listOfResourcePoolsToSearch(
+  const string& locale) const
+  -> std::vector< shared_ptr<ResourcePool> >
+{
+  std::vector<string> searchedLocales = localesSearchList(locale);
+  std::vector< shared_ptr<ResourcePool> > result;
+
+  for (const string& loc: searchedLocales) {
+    auto poolPtrIt = localeToResourcePoolMap.find(loc);
+    // Don't store pointers to empty resource pools in 'result'. This
+    // optimizes resource fetching a little bit, but requires that all
+    // resources are added before this method is called.
+    if (poolPtrIt != localeToResourcePoolMap.end()) {
+      // Copy a shared_ptr<ResourcePool>
+      result.push_back(poolPtrIt->second);
+    }
+  }
+
+  return result;
+}
+
+// Static method
+shared_ptr<const AbstractEmbeddedResource>
+EmbeddedResourceManager::Impl::lookupResourceInPools(
+  const string& virtualPath,
+  const std::vector< shared_ptr<ResourcePool> >& aPoolSearchList)
+{
+  // Search the provided resource pools in proper order. For instance, the one
+  // for 'fr_FR', then the one for 'fr' and finally the one for the default
+  // locale. Return the first resource found in one of these pools.
+  for (const shared_ptr<ResourcePool>& poolPtr: aPoolSearchList) {
+    auto resourcePtrIt = poolPtr->find(virtualPath);
+
+    if (resourcePtrIt != poolPtr->end()) {
+      // Copy a shared_ptr<const AbstractEmbeddedResource>
+      return resourcePtrIt->second;
+    }
+  }
+
+  return shared_ptr<const AbstractEmbeddedResource>(); // null shared_ptr object
+}
+
+void
+EmbeddedResourceManager::Impl::addResource(
+  const string& virtualPath,
+  unique_ptr<const AbstractEmbeddedResource> resourcePtr,
+  const string& locale)
+{
+  // Find the resource pool corresponding to the specified locale
+  shared_ptr<ResourcePool>& resPoolPtr = localeToResourcePoolMap[locale];
+  if (!resPoolPtr) {
+    resPoolPtr.reset(new ResourcePool());
+  }
+
+  auto emplaceRetval = resPoolPtr->emplace(virtualPath, std::move(resourcePtr));
+
+  if (!emplaceRetval.second) {
+    const string localeDescr =
+      (locale.empty()) ? "the default locale" : "locale '" + locale + "'";
+    throw sg_error(
+      "Virtual path already in use for " + localeDescr +
+      " in the EmbeddedResourceManager: '" + virtualPath + "'");
+  }
+
+  dirty = true;
+}
+
+// ***************************************************************************
+// *                         EmbeddedResourceManager                         *
+// ***************************************************************************
+EmbeddedResourceManager::EmbeddedResourceManager()
+  : p(unique_ptr<Impl>(new Impl))
+{ }
+
+const unique_ptr<EmbeddedResourceManager>&
+EmbeddedResourceManager::createInstance()
+{
+  staticInstance.reset(new EmbeddedResourceManager);
+  return staticInstance;
+}
+
+const unique_ptr<EmbeddedResourceManager>&
+EmbeddedResourceManager::instance()
+{
+  return staticInstance;
+}
+
+string
+EmbeddedResourceManager::getLocale() const
+{
+  return p->getLocale();
+}
+
+string
+EmbeddedResourceManager::selectLocale(const std::string& locale)
+{
+  return p->selectLocale(locale);
+}
+
+void
+EmbeddedResourceManager::addResource(
+  const string& virtualPath,
+  unique_ptr<const AbstractEmbeddedResource> resourcePtr,
+  const string& locale)
+{
+  p->addResource(virtualPath, std::move(resourcePtr), locale);
+}
+
+shared_ptr<const AbstractEmbeddedResource>
+EmbeddedResourceManager::getResourceOrNullPtr(const string& virtualPath) const
+{
+  if (p->dirty) {
+    p->rehash();                // update p->poolSearchList
+  }
+
+  // Use the selected locale
+  return p->lookupResourceInPools(virtualPath, p->poolSearchList);
+}
+
+shared_ptr<const AbstractEmbeddedResource>
+EmbeddedResourceManager::getResourceOrNullPtr(const string& virtualPath,
+                                              const string& locale) const
+{
+  // In this overload, we don't use the cached list of pools
+  // (p->poolSearchList), therefore there is no need to check the 'dirty' flag
+  // or to rehash().
+  return p->lookupResourceInPools(virtualPath,
+                                  p->listOfResourcePoolsToSearch(locale));
+}
+
+} // of namespace simgear

simgear/embedded_resources/EmbeddedResourceManager.hxx

@@ -0,0 +1,204 @@
+// -*- coding: utf-8 -*-
+//
+// EmbeddedResourceManager.hxx --- Manager class for resources embedded in an
+//                                 executable
+// Copyright (C) 2017  Florent Rougon
+//
+// 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., 51 Franklin Street, Fifth Floor, Boston,
+// MA  02110-1301  USA.
+
+#ifndef FG_EMBEDDEDRESOURCEMANAGER_HXX
+#define FG_EMBEDDEDRESOURCEMANAGER_HXX
+
+#include <string>
+#include <memory>               // std::unique_ptr, std::shared_ptr
+#include <unordered_map>
+#include <vector>
+#include <utility>              // std::forward()
+#include <cstddef>              // std::size_t
+
+#include <simgear/structure/exception.hxx>
+#include "EmbeddedResource.hxx"
+
+namespace simgear
+{
+
+class EmbeddedResourceManager
+{
+public:
+  EmbeddedResourceManager(const EmbeddedResourceManager&) = delete;
+  EmbeddedResourceManager& operator=(const EmbeddedResourceManager&) = delete;
+  EmbeddedResourceManager(EmbeddedResourceManager&&) = delete;
+  EmbeddedResourceManager& operator=(EmbeddedResourceManager&&) = delete;
+  // The instance is created by createInstance() -> private constructor
+  // but it should be deleted by its owning std::unique_ptr -> public destructor
+  ~EmbeddedResourceManager() = default;
+
+  // Static creator
+  static const std::unique_ptr<EmbeddedResourceManager>& createInstance();
+
+  // Singleton accessor
+  static const std::unique_ptr<EmbeddedResourceManager>& instance();
+
+  // Return the currently-selected “locale”[*] for resource fetching.
+  //
+  // [*] For instance: std::string("")      for the default locale
+  //                   std::string("fr")    for French
+  //                   std::string("fr_FR") for French from France
+  std::string getLocale() const;
+  // Select the locale for which resources will be returned in the future, for
+  // the getResourceOrNullPtr(), getResource(), getString(), getStreambuf()
+  // and getIStream() overloads that don't have a 'locale' parameter.
+  // May be called several times. Return the previously-selected locale.
+  //
+  // If you just want to fetch one or two resources in a particular “locale”
+  // (language), it is simpler to use an overload of one of the
+  // getResourceOrNullPtr(), getResource(), ..., getIStream() methods that has
+  // a 'locale' parameter.
+  std::string selectLocale(const std::string& locale);
+
+  // Add a resource for the specified locale to the embedded resource manager.
+  // This method acts as a sink for its second argument (the std::unique_ptr
+  // typically has to be std::move()d). If 'locale' is empty, the resource is
+  // added for the default locale.
+  void addResource(const std::string& virtualPath,
+                   std::unique_ptr<const AbstractEmbeddedResource> resourcePtr,
+                   const std::string& locale = std::string());
+
+  // Get access to a resource.
+  //
+  // Fetch the resource for the selected locale (cf. selectLocale()), with
+  // fallback behavior[1]. If no resource is found for the given
+  // 'virtualPath', return a null
+  // std::shared_ptr<const AbstractEmbeddedResource>.
+  //
+  // [1] This means that for instance, if the selected locale is 'es_ES', the
+  //     resource is first looked up for the 'es_ES' “locale”; then, if not
+  //     found, for 'es'; and finally, if still not found, for the default
+  //     locale ''.
+  std::shared_ptr<const AbstractEmbeddedResource> getResourceOrNullPtr(
+    const std::string& virtualPath) const;
+  // Same as the previous overload, except the resource is fetched for the
+  // specified locale (with fallback behavior) instead of for the selected
+  // locale. Use an empty 'locale' parameter to fetch the resource for the
+  // default locale.
+  std::shared_ptr<const AbstractEmbeddedResource> getResourceOrNullPtr(
+    const std::string& virtualPath,
+    const std::string& locale) const;
+
+  // Same overloads as for getResourceOrNullPtr(), except that if the resource
+  // isn't found, then an sg_exception is raised. These methods never return
+  // a null or empty std::shared_ptr<const AbstractEmbeddedResource>.
+  template <typename ...Args>
+  std::shared_ptr<const AbstractEmbeddedResource> getResource(
+    const std::string& virtualPath, Args&& ...args) const
+  {
+    const auto resPtr = getResourceOrNullPtr(virtualPath,
+                                             std::forward<Args>(args)...);
+
+    if (!resPtr) {
+      throw sg_exception("No embedded resource found at virtual path '" +
+                         virtualPath + "'");
+    }
+
+    return resPtr;
+  }
+
+  // Get a resource contents in the form of an std::string. Raise an
+  // sg_exception if no resource is found for the specified 'virtualPath'.
+  //
+  // The returned std::string is a copy of the resource contents (possibly
+  // transparently decompressed, cf. simgear::ZlibEmbeddedResource).
+  template <typename ...Args>
+  std::string getString(const std::string& virtualPath, Args&& ...args) const
+  {
+    return getResource(virtualPath, std::forward<Args>(args)...)->str();
+  }
+
+  // Get access to a resource via an std::streambuf instance. Raise an
+  // sg_exception if no resource is found for the specified 'virtualPath'.
+  //
+  // This allows one to incrementally process the resource contents without
+  // ever making a copy of it (including incremental, transparent
+  // decompression if the resource happens to be compressed---cf.
+  // simgear::ZlibEmbeddedResource).
+  template <typename ...Args>
+  std::unique_ptr<std::streambuf> getStreambuf(const std::string& virtualPath,
+                                               Args&& ...args) const
+  {
+    return getResource(virtualPath, std::forward<Args>(args)...)->streambuf();
+  }
+
+  // Get access to a resource via an std::istream instance. Raise an
+  // sg_exception if no resource is found for the specified 'virtualPath'.
+  //
+  // The same remarks made for getStreambuf() apply here too.
+  template <typename ...Args>
+  std::unique_ptr<std::istream> getIStream(const std::string& virtualPath,
+                                           Args&& ...args) const
+  {
+    return getResource(virtualPath, std::forward<Args>(args)...)->istream();
+  }
+
+private:
+  // Constructor called from createInstance() only
+  explicit EmbeddedResourceManager();
+
+  class Impl;
+  const std::unique_ptr<Impl> p; // Pimpl idiom
+};
+
+// Explicit template instantiations
+template
+std::shared_ptr<const AbstractEmbeddedResource>
+EmbeddedResourceManager::getResource(const std::string& virtualPath) const;
+
+template
+std::string
+EmbeddedResourceManager::getString(const std::string& virtualPath) const;
+
+template
+std::unique_ptr<std::streambuf>
+EmbeddedResourceManager::getStreambuf(const std::string& virtualPath) const;
+
+template
+std::unique_ptr<std::istream>
+EmbeddedResourceManager::getIStream(const std::string& virtualPath) const;
+
+// MSVC doesn't recognize these as template instantiations of what we defined
+// above (this seems to be with “Visual Studio 14 2015”), therefore only
+// include them with other compilers.
+#ifndef _MSC_VER
+template
+std::shared_ptr<const AbstractEmbeddedResource>
+EmbeddedResourceManager::getResource(const std::string& virtualPath,
+                                     const std::string& locale) const;
+template
+std::string
+EmbeddedResourceManager::getString(const std::string& virtualPath,
+                                   const std::string& locale) const;
+template
+std::unique_ptr<std::streambuf>
+EmbeddedResourceManager::getStreambuf(const std::string& virtualPath,
+                                      const std::string& locale) const;
+template
+std::unique_ptr<std::istream>
+EmbeddedResourceManager::getIStream(const std::string& virtualPath,
+                                    const std::string& locale) const;
+#endif  // #ifndef _MSC_VER
+
+} // of namespace simgear
+
+#endif  // of FG_EMBEDDEDRESOURCEMANAGER_HXX

simgear/embedded_resources/EmbeddedResourceManager_private.hxx

@@ -0,0 +1,102 @@
+// -*- coding: utf-8 -*-
+//
+// EmbeddedResourceManager_private.hxx --- Private implementation class for
+//                                         SimGear's EmbeddedResourceManager
+// Copyright (C) 2017  Florent Rougon
+//
+// 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., 51 Franklin Street, Fifth Floor, Boston,
+// MA  02110-1301  USA.
+
+#ifndef FG_EMBEDDEDRESOURCEMANAGERPRIVATE_HXX
+#define FG_EMBEDDEDRESOURCEMANAGERPRIVATE_HXX
+
+#include <string>
+#include <memory>               // std::unique_ptr, std::shared_ptr
+#include <unordered_map>
+#include <vector>
+
+#include "EmbeddedResource.hxx"
+
+namespace simgear
+{
+
+class EmbeddedResourceManager::Impl
+{
+public:
+  explicit Impl();
+
+  // Each “locale” for which addResource() has been used has an associated
+  // resource pool, that is a sort of directory of all resources declared in
+  // this locale. The resource pool for a given locale (e.g., 'fr' or 'de_DE')
+  // maps resource virtual paths to the corresponding resource descriptors
+  // (via std::shared_ptr<const AbstractEmbeddedResource> instances).
+  //
+  // Note: for optimal lookup performance, a tree would probably be better,
+  //       since the expected use for each key here is to store a virtual
+  //       path. But such an optimization is likely unneeded in most cases.
+  typedef std::unordered_map< std::string,
+                              std::shared_ptr<const AbstractEmbeddedResource> >
+          ResourcePool;
+
+  // Return the list of “locales” to scan to implement fallback behavior when
+  // fetching a resource for the specified locale. This list will be searched
+  // from left to right. Examples:
+  //
+  //   ""      -> [""]
+  //   "fr"    -> ["fr", ""]
+  //   "fr_FR" -> ["fr_FR", "fr", ""]
+  static std::vector<std::string> localesSearchList(const std::string& locale);
+  // Same as localesSearchList(), except it returns the resource pools instead
+  // of the “locale” strings, and only those pools that are not empty.
+  std::vector< std::shared_ptr<ResourcePool> > listOfResourcePoolsToSearch(
+    const std::string& locale) const;
+  // Look up, in each of the pools referred to by 'poolSearchList', the
+  // resource associated to 'virtualPath'. Return the first match.
+  static std::shared_ptr<const AbstractEmbeddedResource> lookupResourceInPools(
+    const std::string& virtualPath,
+    const std::vector< std::shared_ptr<ResourcePool> >& poolSearchList);
+
+  // Recompute p->poolSearchList. This method is automatically called whenever
+  // needed (lazily), so it doesn't need to be part of the public interface.
+  void rehash();
+
+  // Implement the corresponding EmbeddedResourceManager public methods
+  std::string getLocale() const;
+  std::string selectLocale(const std::string& locale);
+
+  // Ditto
+  void addResource(const std::string& virtualPath,
+                   std::unique_ptr<const AbstractEmbeddedResource> resourcePtr,
+                   const std::string& locale);
+
+  std::string selectedLocale;
+  // Each call to rehash() updates this member to contain precisely the
+  // (ordered) list of pools to search for a resource in the selected
+  // “locale”. This allows relatively cheap resource lookups, assuming the
+  // desired “locale” doesn't change all the time.
+  std::vector< std::shared_ptr<ResourcePool> > poolSearchList;
+  // Indicate whether 'poolSearchList' must be updated (i.e., resources have
+  // been added or the selected locale was changed without rehash() being
+  // called afterwards).
+  bool dirty;
+
+  // Maps each “locale name” to the corresponding resource pool.
+  std::unordered_map< std::string,
+                      std::shared_ptr<ResourcePool> > localeToResourcePoolMap;
+};
+
+} // of namespace simgear
+
+#endif  // of FG_EMBEDDEDRESOURCEMANAGERPRIVATE_HXX

simgear/embedded_resources/EmbeddedResourceProxy.cxx

@@ -0,0 +1,257 @@
+// -*- coding: utf-8 -*-
+//
+// EmbeddedResourceProxy.cxx --- Unified access to real files or embedded
+//                               resources
+// Copyright (C) 2017  Florent Rougon
+//
+// 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., 51 Franklin Street, Fifth Floor, Boston,
+// MA  02110-1301  USA.
+
+#include <simgear_config.h>
+
+#include <algorithm>            // std::find()
+#include <ios>                  // std::streamsize
+#include <istream>
+#include <limits>               // std::numeric_limits
+#include <memory>
+#include <vector>
+#include <string>
+#include <cstdlib>              // std::size_t
+#include <cassert>
+
+#include <simgear/misc/sg_path.hxx>
+#include <simgear/misc/strutils.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
+#include <simgear/structure/exception.hxx>
+#include "EmbeddedResourceManager.hxx"
+#include "EmbeddedResourceProxy.hxx"
+
+using std::string;
+using std::vector;
+using std::shared_ptr;
+using std::unique_ptr;
+
+
+namespace simgear
+{
+
+EmbeddedResourceProxy::EmbeddedResourceProxy(const SGPath& realRoot,
+                                             const string& virtualRoot,
+                                             bool useEmbeddedResourcesByDefault)
+  : _realRoot(realRoot),
+    _virtualRoot(normalizeVirtualRoot(virtualRoot)),
+    _useEmbeddedResourcesByDefault(useEmbeddedResourcesByDefault)
+{ }
+
+SGPath
+EmbeddedResourceProxy::getRealRoot() const
+{ return _realRoot; }
+
+void
+EmbeddedResourceProxy::setRealRoot(const SGPath& realRoot)
+{ _realRoot = realRoot; }
+
+string
+EmbeddedResourceProxy::getVirtualRoot() const
+{ return _virtualRoot; }
+
+void
+EmbeddedResourceProxy::setVirtualRoot(const string& virtualRoot)
+{ _virtualRoot = normalizeVirtualRoot(virtualRoot); }
+
+bool
+EmbeddedResourceProxy::getUseEmbeddedResources() const
+{ return _useEmbeddedResourcesByDefault; }
+
+void
+EmbeddedResourceProxy::setUseEmbeddedResources(bool useEmbeddedResources)
+{ _useEmbeddedResourcesByDefault = useEmbeddedResources; }
+
+// Static method: normalize the 'virtualRoot' argument of the constructor
+//
+// The argument must start with a slash and mustn't contain any '.' or '..'
+// component. The return value never ends with a slash.
+string
+EmbeddedResourceProxy::normalizeVirtualRoot(const string& path)
+{
+  EmbeddedResourceProxy::checkPath(__func__, path,
+                                   false /* allowStartWithColon */);
+  string res = path;
+
+  // Make sure 'res' doesn't end with a '/'.
+  while (!res.empty() && res.back() == '/') {
+    res.pop_back();    // This will ease path concatenation
+  }
+
+  return res;
+}
+
+// Static method
+void
+EmbeddedResourceProxy::checkPath(const string& callerMethod, const string& path,
+                                 bool allowStartWithColon)
+{
+  if (path.empty()) {
+    throw sg_format_exception(
+      "Invalid empty path for EmbeddedResourceProxy::" +
+      callerMethod + "(): '" + path + "'", path);
+  } else if (allowStartWithColon &&
+             !simgear::strutils::starts_with(path, ":/") && path[0] != '/') {
+    throw sg_format_exception(
+      "Invalid path for EmbeddedResourceProxy::" + callerMethod + "(): "
+      "it should start with either ':/' or '/'", path);
+  } else if (!allowStartWithColon && path[0] != '/') {
+    throw sg_format_exception(
+      "Invalid path for EmbeddedResourceProxy::" + callerMethod + "(): "
+      "it should start with a slash ('/')", path);
+  } else {
+    const vector<string> components = simgear::strutils::split(path, "/");
+    auto find = [&components](const string& s) -> bool {
+      return (std::find(components.begin(), components.end(), s) !=
+              components.end());
+    };
+
+    if (find(".") || find("..")) {
+      throw sg_format_exception(
+        "Invalid path for EmbeddedResourceProxy::" + callerMethod + "(): "
+        "'.' and '..' components are not allowed", path);
+    }
+  }
+}
+
+unique_ptr<std::istream>
+EmbeddedResourceProxy::getIStream(const string& path, bool fromEmbeddedResource)
+  const
+{
+  EmbeddedResourceProxy::checkPath(__func__, path,
+                                   false /* allowStartWithColon */);
+  assert(!path.empty() && path.front() == '/');
+
+  if (fromEmbeddedResource) {
+    const auto& embeddedResMgr = simgear::EmbeddedResourceManager::instance();
+    return embeddedResMgr->getIStream(
+      _virtualRoot + path,
+      "");                // fetch the default-locale version of the resource
+  } else {
+    const SGPath sgPath = _realRoot / path.substr(std::size_t(1));
+    return unique_ptr<std::istream>(new sg_ifstream(sgPath));
+  }
+}
+
+unique_ptr<std::istream>
+EmbeddedResourceProxy::getIStream(const string& path) const
+{
+  return getIStream(path, _useEmbeddedResourcesByDefault);
+}
+
+unique_ptr<std::istream>
+EmbeddedResourceProxy::getIStreamDecideOnPrefix(const string& path) const
+{
+  EmbeddedResourceProxy::checkPath(__func__, path,
+                                   true /* allowStartWithColon */);
+
+  // 'path' is non-empty
+  if (path.front() == '/') {
+    return getIStream(path, false /* fromEmbeddedResource */);
+  } else if (path.front() == ':') {
+    assert(path.size() >= 2 && path[1] == '/');
+    // Skip the leading ':'
+    return getIStream(path.substr(std::size_t(1)),
+                      true /* fromEmbeddedResource */);
+  } else {
+    // The checkPath() call should make it impossible to reach this point.
+    std::abort();
+  }
+}
+
+string
+EmbeddedResourceProxy::getString(const string& path, bool fromEmbeddedResource)
+  const
+{
+  string result;
+
+  EmbeddedResourceProxy::checkPath(__func__, path,
+                                   false /* allowStartWithColon */);
+  assert(!path.empty() && path.front() == '/');
+
+  if (fromEmbeddedResource) {
+    const auto& embeddedResMgr = simgear::EmbeddedResourceManager::instance();
+    // Fetch the default-locale version of the resource
+    result = embeddedResMgr->getString(_virtualRoot + path, "");
+  } else {
+    const SGPath sgPath = _realRoot / path.substr(std::size_t(1));
+    result.reserve(sgPath.sizeInBytes());
+    const unique_ptr<std::istream> streamp = getIStream(path,
+                                                        fromEmbeddedResource);
+    std::streamsize nbCharsRead;
+
+    // Allocate a buffer
+    static constexpr std::size_t bufSize = 65536;
+    static_assert(bufSize <= std::numeric_limits<std::streamsize>::max(),
+                  "Type std::streamsize is unexpectedly small");
+    static_assert(bufSize <= std::numeric_limits<string::size_type>::max(),
+                  "Type std::string::size_type is unexpectedly small");
+    unique_ptr<char[]> buf(new char[bufSize]);
+
+    do {
+      streamp->read(buf.get(), bufSize);
+      nbCharsRead = streamp->gcount();
+
+      if (nbCharsRead > 0) {
+        result.append(buf.get(), nbCharsRead);
+      }
+    } while (*streamp);
+
+    // streamp->fail() would *not* indicate an error, due to the semantics
+    // of std::istream::read().
+    if (streamp->bad()) {
+      throw sg_io_exception("Error reading from file", sg_location(path));
+    }
+  }
+
+  return result;
+}
+
+string
+EmbeddedResourceProxy::getString(const string& path) const
+{
+  return getString(path, _useEmbeddedResourcesByDefault);
+}
+
+string
+EmbeddedResourceProxy::getStringDecideOnPrefix(const string& path) const
+{
+  string result;
+
+  EmbeddedResourceProxy::checkPath(__func__, path,
+                                   true /* allowStartWithColon */);
+
+  // 'path' is non-empty
+  if (path.front() == '/') {
+    result = getString(path, false /* fromEmbeddedResource */);
+  } else if (path.front() == ':') {
+    assert(path.size() >= 2 && path[1] == '/');
+    // Skip the leading ':'
+    result = getString(path.substr(std::size_t(1)),
+                       true /* fromEmbeddedResource */);
+  } else {
+    // The checkPath() call should make it impossible to reach this point.
+    std::abort();
+  }
+
+  return result;
+}
+
+} // of namespace simgear

simgear/embedded_resources/EmbeddedResourceProxy.hxx

@@ -0,0 +1,155 @@
+// -*- coding: utf-8 -*-
+//
+// EmbeddedResourceProxy.hxx --- Unified access to real files or embedded
+//                               resources
+// Copyright (C) 2017  Florent Rougon
+//
+// 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., 51 Franklin Street, Fifth Floor, Boston,
+// MA  02110-1301  USA.
+
+#ifndef FG_EMBEDDEDRESOURCEPROXY_HXX
+#define FG_EMBEDDEDRESOURCEPROXY_HXX
+
+#include <istream>
+#include <memory>
+#include <string>
+
+#include <simgear/misc/sg_path.hxx>
+
+// The EmbeddedResourceProxy class allows one to access real files or embedded
+// resources in a unified way. When using it, one can switch from one data
+// source to the other with minimal code changes, possibly even at runtime (in
+// which case there is obviously no code change at all).
+//
+// Sample usage of the EmbeddedResourceProxy class (from FlightGear):
+//
+//   simgear::EmbeddedResourceProxy proxy(globals->get_fg_root(), "/FGData");
+//   std::string s = proxy.getString("/some/path");
+//   std::unique_ptr<std::istream> streamp = proxy.getIStream("/some/path");
+//
+// The methods getString(const std::string& path) and
+// getIStream(const std::string& path) of EmbeddedResourceProxy decide whether
+// to use embedded resources or real files depending on the boolean value
+// passed to EmbeddedResourceProxy::setUseEmbeddedResources() (also available
+// as an optional parameter to the EmbeddedResourceProxy constructor,
+// defaulting to true). It is often most convenient to set this boolean once
+// and then don't worry about it anymore (it is stored as a data member of
+// EmbeddedResourceProxy). Otherwise, if you want to fetch resources some
+// times from real files, other times from embedded resources, you may use the
+// following methods:
+//
+//   // Retrieve contents using embedded resources
+//   std:string s = proxy.getString("/some/path", true);
+//   std:string s = proxy.getStringDecideOnPrefix(":/some/path");
+//
+//   // Retrieve contents using real files
+//   std:string s = proxy.getString("/some/path", false);
+//   std:string s = proxy.getStringDecideOnPrefix("/some/path");
+//
+// You can do exactly the same with EmbeddedResourceProxy::getIStream() and
+// EmbeddedResourceProxy::getIStreamDecideOnPrefix(), except they return an
+// std::unique_ptr<std::istream> instead of an std::string.
+//
+// Given how the 'proxy' object was constructed above, each of these calls
+// will fetch data from either the real file $FG_ROOT/some/path or the
+// embedded resource whose virtual path is '/FGData/some/path' (more
+// precisely: the default-locale version of this resource).
+//
+// The 'path' argument of EmbeddedResourceProxy's methods getString(),
+// getIStream(), getStringDecideOnPrefix() and getIStreamDecideOnPrefix()
+// must:
+//
+//   - use UTF-8 encoding;
+//
+//   - start with:
+//       * either '/' or ':/' for the 'DecideOnPrefix' variants;
+//       * only '/' for the other methods.
+//
+//   - have its components separated by slashes;
+//
+//   - not contain any '.' or '..' component.
+//
+// For the 'DecideOnPrefix' variants:
+//
+//   - if the path starts with a slash ('/'), a real file access is done;
+//
+//   - if, on the other hand, it starts with ':/', EmbeddedResourceProxy uses
+//     the embedded resource whose virtual path is the specified path without
+//     its leading ':' (more precisely: the default-locale version of this
+//     resource).
+namespace simgear
+{
+
+class EmbeddedResourceProxy
+{
+public:
+  // 'virtualRoot' must start with a '/', e.g: '/FGData'. Whether it ends
+  // with a '/' doesn't make a difference.
+  explicit EmbeddedResourceProxy(const SGPath& realRoot,
+                                 const std::string& virtualRoot,
+                                 bool useEmbeddedResourcesByDefault = true);
+
+  // Getters and setters for the corresponding data members
+  SGPath getRealRoot() const;
+  void setRealRoot(const SGPath& realRoot);
+
+  std::string getVirtualRoot() const;
+  void setVirtualRoot(const std::string& virtualRoot);
+
+  bool getUseEmbeddedResources() const;
+  void setUseEmbeddedResources(bool useEmbeddedResources);
+
+  // Get an std::istream to read from a file or from an embedded resource.
+  std::unique_ptr<std::istream>
+  getIStream(const std::string& path, bool fromEmbeddedResource) const;
+
+  std::unique_ptr<std::istream>
+  getIStream(const std::string& path) const;
+
+  std::unique_ptr<std::istream>
+  getIStreamDecideOnPrefix(const std::string& path) const;
+
+  // Get a file or embedded resource contents as a string.
+  std::string
+  getString(const std::string& path, bool fromEmbeddedResource) const;
+
+  std::string
+  getString(const std::string& path) const;
+
+  std::string
+  getStringDecideOnPrefix(const std::string& path) const;
+
+private:
+  // Check that 'path' starts with either ':/' or '/', and doesn't contain any
+  // '..' component ('path' may only start with ':/' if 'allowStartWithColon'
+  // is true).
+  static void
+  checkPath(const std::string& callerMethod, const std::string& path,
+            bool allowStartWithColon);
+
+  // Normalize the 'virtualRoot' argument of the constructor. The argument
+  // must start with a '/' and mustn't contain any '.' or '..' component. The
+  // return value never ends with a '/'.
+  static std::string
+  normalizeVirtualRoot(const std::string& path);
+
+  SGPath _realRoot;
+  std::string _virtualRoot;
+  bool _useEmbeddedResourcesByDefault;
+};
+
+} // of namespace simgear
+
+#endif  // of FG_EMBEDDEDRESOURCEPROXY_HXX

simgear/embedded_resources/embedded_resources_test.cxx

@@ -0,0 +1,516 @@
+// -*- coding: utf-8 -*-
+//
+// embedded_resources_test.cxx --- Automated tests for the embedded resources
+//                                 system in SimGear
+//
+// Copyright (C) 2017  Florent Rougon
+//
+// 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., 51 Franklin Street, Fifth Floor, Boston,
+// MA  02110-1301  USA.
+
+#include <simgear_config.h>
+
+#include <string>
+#include <memory>
+#include <ios>                  // std::streamsize
+#include <iostream>             // std::cout (used for progress info)
+#include <limits>               // std::numeric_limits
+#include <type_traits>          // std::make_unsigned()
+#include <sstream>
+#include <cstdlib>              // EXIT_SUCCESS
+#include <cstddef>              // std::size_t
+
+#include <simgear/misc/test_macros.hxx>
+#include <simgear/misc/sg_dir.hxx>
+#include <simgear/structure/exception.hxx>
+#include <simgear/io/iostreams/CharArrayStream.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
+#include <simgear/io/iostreams/zlibstream.hxx>
+#include "EmbeddedResource.hxx"
+#include "EmbeddedResourceManager.hxx"
+#include "EmbeddedResourceProxy.hxx"
+
+using std::cout;
+using std::cerr;
+using std::endl;
+using std::string;
+using std::unique_ptr;
+using std::shared_ptr;
+using simgear::AbstractEmbeddedResource;
+using simgear::RawEmbeddedResource;
+using simgear::ZlibEmbeddedResource;
+using simgear::EmbeddedResourceManager;
+
+typedef typename std::make_unsigned<std::streamsize>::type uStreamSize;
+
+// Safely convert a non-negative std::streamsize into an std::size_t. If
+// impossible, bail out.
+std::size_t streamsizeToSize_t(std::streamsize n)
+{
+  SG_CHECK_GE(n, 0);
+  SG_CHECK_LE(static_cast<uStreamSize>(n),
+              std::numeric_limits<std::size_t>::max());
+
+  return static_cast<std::size_t>(n);
+}
+
+// This array is null-terminated, but we'll declare the resource size as
+// sizeof(res1Array) - 1 so that the null char is *not* part of it. This
+// way allows one to treat text and binary resources exactly the same way,
+// with the conversion to std::string via a simple
+// std::string(res1Array, resourceSize) not producing a bizarre std::string
+// instance whose last character would be '\0' (followed in memory by the same
+// '\0' used as C-style string terminator this time!).
+static const char res1Array[] = "This is a simple embedded resource test.";
+static const char res1frArray[] = "Ceci est un petit test de ressource "
+                                  "embarquée.";
+static const char res1fr_FRArray[] = "Ceci est un petit test de ressource "
+                                     "embarquée (variante fr_FR).";
+static const string lipsum = "\
+Lorem ipsum dolor sit amet, consectetur adipiscing elit. Quisque congue ornare\n\
+congue. Mauris mollis est et porttitor condimentum. Vivamus laoreet blandit\n\
+odio eget consectetur. Etiam quis magna eu enim luctus pretium. In et\n\
+tristique nunc, non efficitur metus. Nullam efficitur tristique velit.\n\
+Praesent et luctus nunc. Mauris eros eros, rutrum at molestie quis, egestas et\n\
+lorem. Ut nulla turpis, eleifend sed mauris ac, faucibus molestie nulla.\n\
+Quisque viverra vel turpis nec efficitur. Proin non rutrum velit. Nam sodales\n\
+metus felis, eu pharetra velit posuere ut.";
+// Should be enough to store the compressed lipsum (320 bytes are required
+// with zlib 1.2.8, keeping some room to account for possible future format
+// changes in the zlib output...). In any case, there is no risk of buffer
+// overflow, because simgear::CharArrayOStream prevents this by design.
+static char res2Array[350];
+static const char res2frArray[] = "Un lorem ipsum un peu plus court...";
+
+
+// Read data from a string and write it in compressed form to the specified
+// buffer.
+std::size_t writeCompressedDataToBuffer(const string& inputString,
+                                        char *outBuf,
+                                        std::size_t outBufSize)
+{
+  simgear::CharArrayOStream res2Writer(outBuf, outBufSize);
+  std::istringstream iss(inputString);
+  simgear::ZlibCompressorIStream compressor(
+    iss,
+    SGPath(), /* no associated file */
+    9         /* highest compression level */);
+  static constexpr std::size_t bufSize = 1024;
+  unique_ptr<char[]> buf(new char[bufSize]);
+  std::size_t res2Size = 0;
+
+  do {
+    compressor.read(buf.get(), bufSize);
+    std::streamsize nBytes = compressor.gcount();
+    if (nBytes > 0) {           // at least one char could be read
+      res2Writer.write(buf.get(), nBytes);
+      res2Size += nBytes;
+    }
+  } while (compressor && res2Writer);
+
+  SG_VERIFY(compressor.eof());  // all the compressed data has been read
+  // This would fail (among other causes) if the output buffer were too small
+  // to hold all of the compressed data.
+  SG_VERIFY(res2Writer);
+
+  return res2Size;
+}
+
+void initResources()
+{
+  cout << "Creating the EmbeddedResourceManager instance and adding a few "
+    "resources to it" << endl;
+  const auto& resMgr = EmbeddedResourceManager::createInstance();
+
+  // The resource will *not* consider the null terminator to be in.
+  unique_ptr<const RawEmbeddedResource> res1(
+    new RawEmbeddedResource(res1Array, sizeof(res1Array) - 1));
+  resMgr->addResource("/path/to/resource1", std::move(res1));
+
+  unique_ptr<const RawEmbeddedResource> res1fr(
+    new RawEmbeddedResource(res1frArray, sizeof(res1frArray) - 1));
+  resMgr->addResource("/path/to/resource1", std::move(res1fr), "fr");
+
+  unique_ptr<const RawEmbeddedResource> res1fr_FR(
+    new RawEmbeddedResource(res1fr_FRArray, sizeof(res1fr_FRArray) - 1));
+  resMgr->addResource("/path/to/resource1", std::move(res1fr_FR), "fr_FR");
+
+  // Write the contents of 'lipsum' in compressed form to the 'res2Array'
+  // static buffer.
+  std::size_t res2Size = writeCompressedDataToBuffer(lipsum, res2Array,
+                                                     sizeof(res2Array));
+  // Now we have a compressed resource to work with, plus the corresponding
+  // uncompressed output -> perfect for tests!
+  unique_ptr<const ZlibEmbeddedResource> res2(
+    new ZlibEmbeddedResource(res2Array, res2Size, lipsum.size()));
+  resMgr->addResource("/path/to/resource2", std::move(res2));
+
+  unique_ptr<const RawEmbeddedResource> res2fr(
+    new RawEmbeddedResource(res2frArray, sizeof(res2frArray) - 1));
+  resMgr->addResource("/path/to/resource2", std::move(res2fr), "fr");
+
+  // Explicitly select the default locale (typically, English). This is for
+  // clarity, but isn't required.
+  resMgr->selectLocale("");
+}
+
+// Auxiliary function for test_RawEmbeddedResource()
+void auxTest_RawEmbeddedResource_streambuf()
+{
+  cout << "Testing EmbeddedResourceManager::getStreambuf()" << endl;
+  const auto& resMgr = EmbeddedResourceManager::instance();
+
+  unique_ptr<std::streambuf> sbuf(resMgr->getStreambuf("/path/to/resource1"));
+  // Just to show an efficient algorithm. For real applications, use larger
+  // buffer sizes!
+  static constexpr std::size_t bufSize = 4;
+  unique_ptr<char[]> buf(new char[bufSize]); // intermediate buffer
+  std::streamsize nbCharsRead;
+  string result;
+
+  do {
+    nbCharsRead = sbuf->sgetn(buf.get(), bufSize);
+    // The conversion to std::size_t is safe because sbuf->sgetn() returned a
+    // non-negative value which, in this case, can't exceed bufSize.
+    result.append(buf.get(), streamsizeToSize_t((nbCharsRead)));
+  } while (nbCharsRead == bufSize);
+
+  SG_CHECK_EQUAL(result, "This is a simple embedded resource test.");
+}
+
+// Auxiliary function for test_RawEmbeddedResource()
+void auxTest_RawEmbeddedResource_istream()
+{
+  cout << "Testing EmbeddedResourceManager::getIStream()" << endl;
+  const auto& resMgr = EmbeddedResourceManager::instance();
+
+  unique_ptr<std::istream> iStream(resMgr->getIStream("/path/to/resource1"));
+  // This is convenient, but be aware that still in 2017, some buggy C++
+  // compilers don't allow the exception to be caught: cf.
+  // <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66145>.
+  iStream->exceptions(std::ios_base::badbit);
+  // Just to show an efficient algorithm. For real applications, use larger
+  // buffer sizes!
+  static constexpr std::size_t bufSize = 4;
+  unique_ptr<char[]> buf(new char[bufSize]); // intermediate buffer
+  string result;
+
+  do {
+    iStream->read(buf.get(), bufSize);
+    result.append(buf.get(), iStream->gcount());
+  } while (*iStream);           // iStream *points* to an std::istream
+
+  // 1) If set, badbit would have caused an exception to be raised (see above).
+  // 2) failbit doesn't necessarily indicate an error here: it is set as soon
+  //    as the read() call can't provide the requested number of characters.
+  SG_VERIFY(iStream->eof() && !iStream->bad());
+  SG_CHECK_EQUAL(result, "This is a simple embedded resource test.");
+}
+
+void test_RawEmbeddedResource()
+{
+  cout << "Testing resource fetching methods of EmbeddedResourceManager with "
+    "a RawEmbeddedResource" << endl;
+  const auto& resMgr = EmbeddedResourceManager::instance();
+
+  SG_CHECK_EQUAL(resMgr->getString("/path/to/resource1"),
+                 string("This is a simple embedded resource test."));
+
+  // Get a shared_ptr to a const AbstractEmbeddedResource
+  const auto res1abs = resMgr->getResource("/path/to/resource1");
+  // Okay because we know this resource is not a compressed one
+  const auto res1 =
+    std::dynamic_pointer_cast<const RawEmbeddedResource>(res1abs);
+  SG_VERIFY(res1);
+
+  // Print a representation of the resource metadata
+  std::cout << "\n/path/to/resource1 -> " << *res1 << "\n\n";
+
+  // The following methods would work the same with res1abs
+  SG_CHECK_EQUAL_NOSTREAM(res1->compressionType(),
+                          AbstractEmbeddedResource::CompressionType::NONE);
+  SG_CHECK_EQUAL(res1->compressionDescr(), "none");
+
+  SG_CHECK_EQUAL(res1->rawPtr(), res1Array);
+  SG_CHECK_EQUAL(res1->rawSize(), sizeof(res1Array) - 1); // see above
+  SG_CHECK_EQUAL(res1->str(),
+                 string("This is a simple embedded resource test."));
+
+  auxTest_RawEmbeddedResource_streambuf();
+  auxTest_RawEmbeddedResource_istream();
+
+  // Just reload and recheck the resource, because we can :)
+  SG_CHECK_EQUAL(resMgr->getString("/path/to/resource1"),
+                 string("This is a simple embedded resource test."));
+}
+
+void test_ZlibEmbeddedResource()
+{
+  cout << "Testing resource fetching methods of EmbeddedResourceManager with "
+    "a ZlibEmbeddedResource" << endl;
+  const auto& resMgr = EmbeddedResourceManager::instance();
+
+  SG_CHECK_EQUAL(resMgr->getString("/path/to/resource2"),
+                 lipsum);
+
+  // Get a shared_ptr to a const AbstractEmbeddedResource
+  const auto res2abs = resMgr->getResource("/path/to/resource2");
+  // Okay because we know this resource is a Zlib-compressed one
+  const auto res2 =
+    std::dynamic_pointer_cast<const ZlibEmbeddedResource>(res2abs);
+  SG_VERIFY(res2);
+
+  SG_CHECK_EQUAL(res2->uncompressedSize(), lipsum.size());
+
+  // Print a representation of the resource metadata
+  std::cout << "\n/path/to/resource2 -> " << *res2 << "\n\n";
+  cout << "Resource 2 compression ratio: " <<
+    static_cast<float>(res2->uncompressedSize()) /
+    static_cast<float>(res2->rawSize()) << "\n";
+
+  // Just reload and recheck the resource
+  SG_CHECK_EQUAL(resMgr->getString("/path/to/resource2"), lipsum);
+}
+
+void test_getMissingResources()
+{
+  cout << "Testing the behavior of EmbeddedResourceManager when trying to "
+    "fetch inexistent resources" << endl;
+  const auto& resMgr = EmbeddedResourceManager::instance();
+  SG_VERIFY(!resMgr->getResourceOrNullPtr("/inexistant/resource"));
+
+  bool gotException = false;
+  try {
+    resMgr->getResource("/inexistant/resource");
+  } catch (const sg_exception&) {
+    gotException = true;
+  }
+  SG_VERIFY(gotException);
+
+  gotException = false;
+  try {
+    resMgr->getString("/other/inexistant/resource");
+  } catch (const sg_exception&) {
+    gotException = true;
+  }
+  SG_VERIFY(gotException);
+}
+
+void test_addAlreadyExistingResource()
+{
+  cout << "Testing the behavior of EmbeddedResourceManager when trying to "
+    "add an already existing resource" << endl;
+  const auto& resMgr = EmbeddedResourceManager::instance();
+
+  for (const string& locale: {"", "fr", "fr_FR"}) {
+    // For these tests, we don't care about the resource contents -> no need
+    // to substract 1 from the result of sizeof() as we did above.
+    unique_ptr<const RawEmbeddedResource> someRes(
+      new RawEmbeddedResource(res1fr_FRArray, sizeof(res1fr_FRArray)));
+
+    bool gotException = false;
+    try {
+      resMgr->addResource("/path/to/resource1", std::move(someRes), locale);
+    } catch (const sg_error&) {
+      gotException = true;
+    }
+    SG_VERIFY(gotException);
+  }
+}
+
+void test_localeDependencyOfResourceFetching()
+{
+  cout << "Testing the locale-dependency of resource fetching from "
+    "EmbeddedResourceManager" << endl;
+  const auto& resMgr = EmbeddedResourceManager::instance();
+  resMgr->selectLocale("");     // select the default locale
+
+  SG_CHECK_EQUAL(resMgr->getString("/path/to/resource1"),
+                 "This is a simple embedded resource test.");
+
+  // Switch to the 'fr_FR' locale (French from France)
+  resMgr->selectLocale("fr_FR");
+  SG_CHECK_EQUAL(resMgr->getString("/path/to/resource1"),
+                 "Ceci est un petit test de ressource embarquée (variante "
+                 "fr_FR).");
+
+  // This one is for the 'fr' “locale”, obtained as fallback since there is no
+  // resource mapped to /path/to/resource2 for the 'fr_FR' “locale”.
+  SG_CHECK_EQUAL(resMgr->getString("/path/to/resource2"),
+                 "Un lorem ipsum un peu plus court...");
+
+  // Explicitly ask for the resource in the default locale
+  SG_CHECK_EQUAL(resMgr->getString("/path/to/resource1", ""),
+                 "This is a simple embedded resource test.");
+
+  // Switch to the 'fr' locale (French)
+  resMgr->selectLocale("fr");
+  SG_CHECK_EQUAL(resMgr->getString("/path/to/resource1"),
+                 "Ceci est un petit test de ressource embarquée.");
+
+  // Explicitly ask for the resource in the 'fr_FR' locale
+  SG_CHECK_EQUAL(resMgr->getString("/path/to/resource1", "fr_FR"),
+                 "Ceci est un petit test de ressource embarquée "
+                 "(variante fr_FR).");
+
+  // Switch to the default locale
+  resMgr->selectLocale("");
+  SG_CHECK_EQUAL(resMgr->getString("/path/to/resource1"),
+                 "This is a simple embedded resource test.");
+
+  // Explicitly ask for the resource in the 'fr' locale
+  SG_CHECK_EQUAL(resMgr->getString("/path/to/resource1", "fr"),
+                 "Ceci est un petit test de ressource embarquée.");
+
+  // Explicitly ask for the resource in the 'fr_FR' locale
+  SG_CHECK_EQUAL(resMgr->getString("/path/to/resource1", "fr_FR"),
+                 "Ceci est un petit test de ressource embarquée "
+                 "(variante fr_FR).");
+
+  // Explicitly ask for the resource in the default locale
+  SG_CHECK_EQUAL(resMgr->getString("/path/to/resource1", ""),
+                 "This is a simple embedded resource test.");
+}
+
+void test_getLocaleAndSelectLocale()
+{
+  cout << "Testing the getLocale() and selectLocale() methods of "
+    "EmbeddedResourceManager" << endl;
+  const auto& resMgr = EmbeddedResourceManager::instance();
+
+  for (const string& locale: {"", "fr", "fr_FR", "de_DE"}) {
+    // The important effects of setLocale() are tested in
+    // test_localeDependencyOfResourceFetching()
+    resMgr->selectLocale(locale);
+    SG_CHECK_EQUAL(resMgr->getLocale(), locale);
+  }
+}
+
+// Auxiliary function for test_EmbeddedResourceProxy()
+void auxTest_EmbeddedResourceProxy_getIStream(unique_ptr<std::istream> iStream,
+                                              const string& contents)
+{
+  cout << "Testing EmbeddedResourceProxy::getIStream()" << endl;
+
+  iStream->exceptions(std::ios_base::badbit);
+  static constexpr std::size_t bufSize = 65536;
+  unique_ptr<char[]> buf(new char[bufSize]); // intermediate buffer
+  string result;
+
+  do {
+    iStream->read(buf.get(), bufSize);
+    result.append(buf.get(), iStream->gcount());
+  } while (*iStream);           // iStream *points* to an std::istream
+
+  // 1) If set, badbit would have caused an exception to be raised (see above).
+  // 2) failbit doesn't necessarily indicate an error here: it is set as soon
+  //    as the read() call can't provide the requested number of characters.
+  SG_VERIFY(iStream->eof() && !iStream->bad());
+  SG_CHECK_EQUAL(result, contents);
+}
+
+void test_EmbeddedResourceProxy()
+{
+  cout << "Testing the EmbeddedResourceProxy class" << endl;
+
+  // Initialize stuff we need and create two files containing the contents of
+  // the default-locale version of two embedded resources: those with virtual
+  // paths '/path/to/resource1' and '/path/to/resource2'.
+  const auto& resMgr = EmbeddedResourceManager::instance();
+  simgear::Dir tmpDir = simgear::Dir::tempDir("FlightGear");
+  tmpDir.setRemoveOnDestroy();
+
+  const SGPath path1 = tmpDir.path() / "resource1";
+  const SGPath path2 = tmpDir.path() / "resource2";
+
+  sg_ofstream out1(path1);
+  sg_ofstream out2(path2);
+  const string s1 = resMgr->getString("/path/to/resource1", "");
+  // To make sure in these tests that we can tell whether something came from
+  // a real file or from an embedded resource.
+  const string rs1 = s1 + " from real file";
+  const string rlipsum = lipsum + " from real file";
+
+  out1 << rs1;
+  out1.close();
+  if (!out1) {
+    throw sg_io_exception("Error writing to file", sg_location(path1));
+  }
+
+  out2 << rlipsum;
+  out2.close();
+  if (!out2) {
+    throw sg_io_exception("Error writing to file", sg_location(path2));
+  }
+
+  // 'proxy' defaults to using embedded resources
+  const simgear::EmbeddedResourceProxy proxy(tmpDir.path(), "/path/to",
+                                             /* useEmbeddedResourcesByDefault */
+                                             true);
+  simgear::EmbeddedResourceProxy rproxy(tmpDir.path(), "/path/to");
+  // 'rproxy' defaults to using real files
+  rproxy.setUseEmbeddedResources(false); // could be done from the ctor too
+
+  // Test EmbeddedResourceProxy::getString()
+  SG_CHECK_EQUAL(proxy.getStringDecideOnPrefix("/resource1"), rs1);
+  SG_CHECK_EQUAL(proxy.getStringDecideOnPrefix(":/resource1"), s1);
+  SG_CHECK_EQUAL(proxy.getString("/resource1", false), rs1);
+  SG_CHECK_EQUAL(proxy.getString("/resource1", true), s1);
+  SG_CHECK_EQUAL(proxy.getString("/resource1"), s1);
+  SG_CHECK_EQUAL(rproxy.getString("/resource1"), rs1);
+
+  SG_CHECK_EQUAL(proxy.getStringDecideOnPrefix("/resource2"), rlipsum);
+  SG_CHECK_EQUAL(proxy.getStringDecideOnPrefix(":/resource2"), lipsum);
+  SG_CHECK_EQUAL(proxy.getString("/resource2", false), rlipsum);
+  SG_CHECK_EQUAL(proxy.getString("/resource2", true), lipsum);
+  SG_CHECK_EQUAL(proxy.getString("/resource2"), lipsum);
+  SG_CHECK_EQUAL(rproxy.getString("/resource2"), rlipsum);
+
+  // Test EmbeddedResourceProxy::getIStream()
+  auxTest_EmbeddedResourceProxy_getIStream(
+    proxy.getIStreamDecideOnPrefix("/resource1"),
+    rs1);
+  auxTest_EmbeddedResourceProxy_getIStream(
+    proxy.getIStreamDecideOnPrefix(":/resource1"),
+    s1);
+  auxTest_EmbeddedResourceProxy_getIStream(proxy.getIStream("/resource1"), s1);
+  auxTest_EmbeddedResourceProxy_getIStream(rproxy.getIStream("/resource1"), rs1);
+
+  auxTest_EmbeddedResourceProxy_getIStream(proxy.getIStream("/resource2", false),
+                                           rlipsum);
+  auxTest_EmbeddedResourceProxy_getIStream(proxy.getIStream("/resource2", true),
+                                           lipsum);
+  auxTest_EmbeddedResourceProxy_getIStream(proxy.getIStream("/resource2"),
+                                           lipsum);
+  auxTest_EmbeddedResourceProxy_getIStream(rproxy.getIStream("/resource2"),
+                                           rlipsum);
+}
+
+int main(int argc, char **argv)
+{
+  // Initialize the EmbeddedResourceManager instance, add a few resources
+  // to it and call its selectLocale() method.
+  initResources();
+
+  test_RawEmbeddedResource();
+  test_ZlibEmbeddedResource();
+  test_getMissingResources();
+  test_addAlreadyExistingResource();
+  test_localeDependencyOfResourceFetching();
+  test_getLocaleAndSelectLocale();
+  test_EmbeddedResourceProxy();
+
+  return EXIT_SUCCESS;
+}

simgear/environment/CMakeLists.txt

@@ -10,14 +10,20 @@ if(ENABLE_TESTS)
 add_executable(test_metar test_metar.cxx)
 
 if (SIMGEAR_SHARED)
-    target_link_libraries(test_metar SimGearScene) 
+    target_link_libraries(test_metar SimGearScene ${GDAL_LIBRARY}) 
 else()
     target_link_libraries(test_metar
         SimGearScene SimGearCore
         ${CMAKE_THREAD_LIBS_INIT}
         ${ZLIB_LIBRARY}
-        ${RT_LIBRARY})
+        ${RT_LIBRARY}
+        ${GDAL_LIBRARY})
 endif()
 
 add_test(metar ${EXECUTABLE_OUTPUT_PATH}/test_metar)
+
+add_executable(test_precipitation test_precipitation.cxx)
+target_link_libraries(test_precipitation ${TEST_LIBS})
+add_test(precipitation ${EXECUTABLE_OUTPUT_PATH}/test_precipitation)
+
 endif(ENABLE_TESTS)

simgear/environment/metar.cxx

@@ -648,10 +648,11 @@ bool SGMetar::scanWeather()
 	weather = pre + weather + post;
 	weather.erase(weather.length() - 1);
 	_weather.push_back(weather);
-    if( ! w.phenomena.empty() )
+    if( ! w.phenomena.empty() ) {
         _weather2.push_back( w );
-	_grpcount++;
-	return true;
+    }
+    _grpcount++;
+    return true;
 }
 
 

simgear/environment/precipitation.cxx

@@ -7,7 +7,7 @@
  *
  * @brief Precipitation effects to draw rain and snow.
  *
- * @par Licences
+ * @par License
  *   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
@@ -25,7 +25,6 @@
  */
 
 #include "precipitation.hxx"
-//#include "visual_enviro.hxx"
 
 #include <simgear/constants.h>
 #include <osg/ClipNode>
@@ -65,7 +64,7 @@ bool SGPrecipitation::getEnabled() const
  */
 osg::Group* SGPrecipitation::build(void)
 {
-    osg::Group* group = new osg::Group;
+    osg::ref_ptr<osg::Group> group = new osg::Group;
 
     _precipitationEffect->snow(0);	
     _precipitationEffect->rain(0);	
@@ -73,8 +72,9 @@ osg::Group* SGPrecipitation::build(void)
     if (_clip_distance!=0.0)
     {
         osg::ref_ptr<osg::ClipNode> clipNode = new osg::ClipNode;
-        clipNode->addClipPlane( new osg::ClipPlane( 0 ) );
-        clipNode->getClipPlane(0)->setClipPlane( 0.0, 0.0, -1.0, -_clip_distance );
+        osg::ref_ptr<osg::ClipPlane> clipPlane = new osg::ClipPlane(0);
+        clipNode->addClipPlane(clipPlane.get());
+        clipNode->getClipPlane(0)->setClipPlane(0.0, 0.0, -1.0, -_clip_distance);
         clipNode->setReferenceFrame(osg::ClipNode::ABSOLUTE_RF);
         clipNode->addChild(_precipitationEffect.get());
 
@@ -87,7 +87,7 @@ osg::Group* SGPrecipitation::build(void)
 
     group->setNodeMask( ~(simgear::CASTSHADOW_BIT | simgear::MODELLIGHT_BIT) );
 
-    return group;
+    return group.release();
 }
 
 
@@ -140,8 +140,8 @@ void SGPrecipitation::setRainDropletSize(float size)
 /**
  * @brief Define the illumination multiplier
  *
- * This function permits you to define and change the rain droplet size
- * which is used if external droplet size control is enabled
+ * This function permits you to define and change the brightness
+ * of the precipitation.
  */
 
 void SGPrecipitation::setIllumination(float illumination)
@@ -163,10 +163,9 @@ void SGPrecipitation::setSnowFlakeSize(float size)
 
 
 /**
- * @brief Define the rain droplet size
+ * @brief Define the clip plane distance
  *
- * This function permits you to define and change the rain droplet size
- * which is used if external droplet size control is enabled
+ * This function permits you to define and change the clip plane distance.
  */
 
 void SGPrecipitation::setClipDistance(float distance)
@@ -224,7 +223,7 @@ void SGPrecipitation::setWindProperty(double heading, double speed)
  * Be careful, if snow and rain intensity are greater than '0', snow effect
  * will be first.
  *
- * The settings come from the osgParticule/PrecipitationEffect.cpp exemple.
+ * The settings come from the osgParticle/PrecipitationEffect.cpp example.
  */
 bool SGPrecipitation::update(void)
 {

simgear/environment/precipitation.hxx

@@ -34,7 +34,7 @@
 
 class SGPrecipitation : public osg::Referenced
 {
-private:
+protected:
     bool _freeze;
     bool _enabled;
     bool _droplet_external;
@@ -66,7 +66,7 @@ public:
     void setIllumination(float);
     void setClipDistance(float);
 
-    void setEnabled( bool );
+    void setEnabled(bool);
     bool getEnabled() const;
 };
 

simgear/environment/test_metar.cxx

@@ -4,6 +4,7 @@
 #endif
 
 #include <simgear/compiler.h>
+#include <simgear/misc/test_macros.hxx>
 
 #include <iostream>
 #include <cstdlib>
@@ -23,75 +24,56 @@ using std::cerr;
 using std::endl;
 using std::string;
 
-#define COMPARE(a, b) \
-    if ((a) != (b))  { \
-        cerr << "failed:" << #a << " != " << #b << endl; \
-        cerr << "\tgot:" << a << endl; \
-        exit(1); \
-    }
-
-#define FUZZY_COMPARE(a, b, epsilon) \
-    if (fabs(a - b) > epsilon) { \
-        cerr << "failed:" << #a << " != " << #b << endl; \
-        cerr << "\tgot:" << a << endl; \
-        cerr << "\tepsilon:" << epsilon << endl; \
-    }
-
-#define VERIFY(a) \
-    if (!(a))  { \
-        cerr << "failed:" << #a << endl; \
-        exit(1); \
-    }
 
 const double TEST_EPSILON = 1e-9;
 
 void test_basic()
 {
     SGMetar m1("2011/10/20 11:25 EHAM 201125Z 27012KT 240V300 9999 VCSH FEW025CB SCT048 10/05 Q1025 TEMPO VRB03KT");
-    COMPARE(m1.getYear(), 2011);
-    COMPARE(m1.getMonth(), 10);
-    COMPARE(m1.getDay(), 20);
-    COMPARE(m1.getHour(), 11);
-    COMPARE(m1.getMinute(), 25);
-    COMPARE(m1.getReportType(), -1); // should default to NIL?
-    
-    COMPARE(m1.getWindDir(), 270);
-    FUZZY_COMPARE(m1.getWindSpeed_kt(), 12, TEST_EPSILON);
-    
-    COMPARE(m1.getWeather().size(), 1);
-    COMPARE(m1.getClouds().size(), 2);
+    SG_CHECK_EQUAL(m1.getYear(), 2011);
+    SG_CHECK_EQUAL(m1.getMonth(), 10);
+    SG_CHECK_EQUAL(m1.getDay(), 20);
+    SG_CHECK_EQUAL(m1.getHour(), 11);
+    SG_CHECK_EQUAL(m1.getMinute(), 25);
+    SG_CHECK_EQUAL(m1.getReportType(), -1); // should default to NIL?
 
-    FUZZY_COMPARE(m1.getTemperature_C(), 10, TEST_EPSILON);
-    FUZZY_COMPARE(m1.getDewpoint_C(), 5, TEST_EPSILON);
-    FUZZY_COMPARE(m1.getPressure_hPa(), 1025, TEST_EPSILON);
+    SG_CHECK_EQUAL(m1.getWindDir(), 270);
+    SG_CHECK_EQUAL_EP2(m1.getWindSpeed_kt(), 12, TEST_EPSILON);
+
+    SG_CHECK_EQUAL(m1.getWeather().size(), 1);
+    SG_CHECK_EQUAL(m1.getClouds().size(), 2);
+
+    SG_CHECK_EQUAL_EP2(m1.getTemperature_C(), 10, TEST_EPSILON);
+    SG_CHECK_EQUAL_EP2(m1.getDewpoint_C(), 5, TEST_EPSILON);
+    SG_CHECK_EQUAL_EP2(m1.getPressure_hPa(), 1025, TEST_EPSILON);
 }
 
 void test_sensor_failure_weather()
 {
     SGMetar m1("2011/10/20 11:25 EHAM 201125Z 27012KT 240V300 9999 // FEW025CB SCT048 10/05 Q1025");
-    COMPARE(m1.getWindDir(), 270);
-    FUZZY_COMPARE(m1.getWindSpeed_kt(), 12, TEST_EPSILON);
+    SG_CHECK_EQUAL(m1.getWindDir(), 270);
+    SG_CHECK_EQUAL_EP2(m1.getWindSpeed_kt(), 12, TEST_EPSILON);
 
-    COMPARE(m1.getWeather().size(), 0);
-    COMPARE(m1.getClouds().size(), 2);
+    SG_CHECK_EQUAL(m1.getWeather().size(), 0);
+    SG_CHECK_EQUAL(m1.getClouds().size(), 2);
 
-    FUZZY_COMPARE(m1.getTemperature_C(), 10, TEST_EPSILON);
-    FUZZY_COMPARE(m1.getDewpoint_C(), 5, TEST_EPSILON);
-    FUZZY_COMPARE(m1.getPressure_hPa(), 1025, TEST_EPSILON);
+    SG_CHECK_EQUAL_EP2(m1.getTemperature_C(), 10, TEST_EPSILON);
+    SG_CHECK_EQUAL_EP2(m1.getDewpoint_C(), 5, TEST_EPSILON);
+    SG_CHECK_EQUAL_EP2(m1.getPressure_hPa(), 1025, TEST_EPSILON);
 }
 
 void test_sensor_failure_cloud()
 {
     SGMetar m1("2011/10/20 11:25 EHAM 201125Z 27012KT 240V300 9999 FEW025CB/// SCT048/// 10/05 Q1025");
-    COMPARE(m1.getWindDir(), 270);
-    FUZZY_COMPARE(m1.getWindSpeed_kt(), 12, TEST_EPSILON);
+    SG_CHECK_EQUAL(m1.getWindDir(), 270);
+    SG_CHECK_EQUAL_EP2(m1.getWindSpeed_kt(), 12, TEST_EPSILON);
 
-    COMPARE(m1.getWeather().size(), 0);
-    COMPARE(m1.getClouds().size(), 2);
+    SG_CHECK_EQUAL(m1.getWeather().size(), 0);
+    SG_CHECK_EQUAL(m1.getClouds().size(), 2);
 
-    FUZZY_COMPARE(m1.getTemperature_C(), 10, TEST_EPSILON);
-    FUZZY_COMPARE(m1.getDewpoint_C(), 5, TEST_EPSILON);
-    FUZZY_COMPARE(m1.getPressure_hPa(), 1025, TEST_EPSILON);
+    SG_CHECK_EQUAL_EP2(m1.getTemperature_C(), 10, TEST_EPSILON);
+    SG_CHECK_EQUAL_EP2(m1.getDewpoint_C(), 5, TEST_EPSILON);
+    SG_CHECK_EQUAL_EP2(m1.getPressure_hPa(), 1025, TEST_EPSILON);
 }
 
 int main(int argc, char* argv[])

simgear/environment/test_precipitation.cxx

@@ -0,0 +1,239 @@
+/**************************************************************************
+ * test_precipitation.cxx -- unit-tests for SGPrecipitation class
+ *
+ * Copyright (C) 2017  Scott Giese (xDraconian) - <scttgs0@gmail.com>
+ *
+ * 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 General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ * $Id$
+ **************************************************************************/
+
+#include <cmath>
+#include <memory>
+
+#include <osg/Group>
+
+#include <simgear/constants.h>
+#include <simgear/misc/test_macros.hxx>
+
+#include "precipitation.hxx"
+
+using std::cout;
+using std::cerr;
+using std::endl;
+
+
+class SGPrecipitationTestFixture : public SGPrecipitation
+{
+public:
+    osg::ref_ptr<osg::Group> _group;
+
+    void test_configuration()
+    {
+        _group = build();
+
+        SG_VERIFY(getEnabled());
+        SG_VERIFY(_precipitationEffect);
+        SG_CHECK_EQUAL_EP(_rain_intensity, 0.0f);
+        SG_CHECK_EQUAL_EP(_snow_intensity, 0.0f);
+        SG_VERIFY(!_freeze);
+    }
+
+    void test_rain()
+    {
+        int count = 500;
+
+        do {
+            if (--count == 0) {
+                cerr << "error: method setRainIntensity took too long.";
+                exit(EXIT_FAILURE);
+            }
+
+            float saveRainIntensity = _rain_intensity;
+
+            setRainIntensity(0.4f);
+            update();
+
+            SG_CHECK_GE(_rain_intensity, saveRainIntensity);
+        } while (std::fabs(_rain_intensity - 0.4f) > 0.00001f);
+
+        SG_CHECK_EQUAL_EP2(_rain_intensity, 0.4f, 0.00001f);
+    }
+
+    void test_rain_external()
+    {
+        int count = 500;
+
+        do {
+            if (--count == 0) {
+                cerr << "error: method setRainIntensity-external took too long.";
+                exit(EXIT_FAILURE);
+            }
+
+            float saveRainIntensity = _rain_intensity;
+
+            setRainIntensity(0.25f);
+            update();
+
+            SG_CHECK_LE(_rain_intensity, saveRainIntensity);
+        } while (std::fabs(_rain_intensity - 0.25f) > 0.00001f);
+
+        // call once more to ensure we have intensity precisely set
+        setRainIntensity(0.25f);
+        update();
+
+        SG_CHECK_EQUAL_EP2(_rain_intensity, 0.25f, 0.00001f);
+    }
+
+    void test_freeze()
+    {
+        float saveParticleSize = _precipitationEffect->getParticleSize();
+        float saveParticleSpeed = std::fabs(_precipitationEffect->getParticleSpeed());
+
+        // change rain to snow
+        // expect particle size to increase
+        // expect particle speed to decrease
+        setFreezing(true);
+        update();
+
+        SG_CHECK_GT(_precipitationEffect->getParticleSize(), saveParticleSize);
+        SG_CHECK_LT(std::fabs(_precipitationEffect->getParticleSpeed()), saveParticleSpeed);
+    }
+
+    void test_snow()
+    {
+        int count = 500;
+
+        do {
+            if (--count == 0) {
+                cerr << "error: method setSnowIntensity took too long.";
+                exit(EXIT_FAILURE);
+            }
+
+            float saveSnowIntensity = _snow_intensity;
+
+            // not a typo - when freezing is enabled, snow intensity is keep in sync with rain intensity
+            setRainIntensity(0.3f);
+            update();
+
+            SG_CHECK_LE(_snow_intensity, saveSnowIntensity);
+        } while (std::fabs(_snow_intensity - 0.3f) > 0.00001f);
+
+        SG_CHECK_EQUAL_EP2(_snow_intensity, 0.3f, 0.00001f);
+    }
+
+    void test_snow_external()
+    {
+        setRainDropletSize(0.025f);
+        setSnowFlakeSize(0.04f);
+        setDropletExternal(true);
+
+        int count = 600;
+
+        do {
+            if (--count == 0) {
+                cerr << "error: method setSnowIntensity-external took too long.";
+                exit(EXIT_FAILURE);
+            }
+
+            float saveSnowIntensity = _snow_intensity;
+
+            setSnowIntensity(0.55f);
+            update();
+
+            SG_CHECK_GE(_snow_intensity, saveSnowIntensity);
+        } while (std::fabs(_snow_intensity - 0.55f) > 0.00001f);
+
+        // call once more to ensure we have intensity precisely set
+        setSnowIntensity(0.55f);
+        update();
+
+        SG_CHECK_EQUAL_EP2(_snow_intensity, 0.55f, 0.00001f);
+    }
+
+    void test_unfreeze()
+    {
+        float saveParticleSize = _precipitationEffect->getParticleSize();
+        float saveParticleSpeed = std::fabs(_precipitationEffect->getParticleSpeed());
+
+        // change snow to rain
+        // expect particle size to decrease
+        // expect particle speed to increase
+        setFreezing(false);
+        update();
+
+        SG_CHECK_LT(_precipitationEffect->getParticleSize(), saveParticleSize);
+        SG_CHECK_GT(std::fabs(_precipitationEffect->getParticleSpeed()), saveParticleSpeed);
+    }
+
+    void test_no_precipitation()
+    {
+        setEnabled(false);
+        SG_VERIFY(!getEnabled());
+
+        update();
+
+        // intensity drops to zero, so we should see this reflected in the particles
+        SG_CHECK_EQUAL_EP(_precipitationEffect->getParticleSize(), 0.01f);
+        SG_CHECK_EQUAL_EP(_precipitationEffect->getParticleSpeed(), -2.0f);
+
+        setEnabled(true);
+    }
+
+    void test_illumination()
+    {
+        setIllumination(0.87f);
+        SG_CHECK_EQUAL_EP(_illumination, 0.87f);
+    }
+
+    void test_clipping()
+    {
+        setClipDistance(6.5);
+        SG_CHECK_EQUAL_EP(_clip_distance, 6.5f);
+    }
+
+    void test_wind()
+    {
+        setWindProperty(87.0f, 0.7f);
+        auto vec = _wind_vec;
+        SG_CHECK_EQUAL_EP2(vec[0], 0.011166f, 0.00001f);
+        SG_CHECK_EQUAL_EP2(vec[1], -0.213068f, 0.00001f);
+        SG_CHECK_EQUAL_EP2(vec[2], 0.0f, 0.00001f);
+    }
+};
+
+
+int main(int argc, char* argv[])
+{
+    auto fixture = std::unique_ptr<SGPrecipitationTestFixture>(new SGPrecipitationTestFixture);
+
+    fixture->test_configuration();
+    fixture->test_rain();
+    fixture->test_freeze();
+    fixture->test_snow();
+    fixture->test_unfreeze();
+    fixture->test_no_precipitation();
+
+    fixture->test_snow_external();
+    fixture->test_rain_external();
+    fixture->test_illumination();
+    fixture->test_clipping();
+    fixture->test_wind();
+    fixture->test_no_precipitation();
+
+    cout << "all tests passed OK" << endl;
+
+    return EXIT_SUCCESS;
+}

simgear/ephemeris/celestialBody.cxx

@@ -22,6 +22,7 @@
  * $Id$
  **************************************************************************/
 
+#include <simgear_config.h>
 #include <simgear/debug/logstream.hxx>
 
 #include <math.h>
@@ -52,7 +53,8 @@
 void CelestialBody::updatePosition(double mjd, Star *ourSun)
 {
   double eccAnom, v, ecl, actTime, 
-    xv, yv, xh, yh, zh, xg, yg, zg, xe, ye, ze;
+    xv, yv, xh, yh, zh, xg, yg, zg, xe, ye, ze,
+    cosN, sinN, cosvw, sinvw, sinvw_cosi, cosecl, sinecl;
 
   updateOrbElements(mjd);
   actTime = sgCalcActTime(mjd);
@@ -66,10 +68,19 @@ void CelestialBody::updatePosition(double mjd, Star *ourSun)
   v = atan2(yv, xv);           // the planet's true anomaly
   r = sqrt (xv*xv + yv*yv);    // the planet's distance
   
+  // repetitive calculations, minimised for speed
+  cosN = cos(N);
+  sinN = sin(N);
+  cosvw = cos(v+w);
+  sinvw = sin(v+w);
+  sinvw_cosi = sinvw * cos(i);
+  cosecl = cos(ecl);
+  sinecl = sin(ecl);
+
   // calculate the planet's position in 3D space
-  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));
+  xh = r * (cosN * cosvw - sinN * sinvw_cosi);
+  yh = r * (sinN * cosvw + cosN * sinvw_cosi);
+  zh = r * (sinvw * sin(i));
 
   // calculate the ecliptic longitude and latitude
   xg = xh + ourSun->getxs();
@@ -80,8 +91,8 @@ void CelestialBody::updatePosition(double mjd, Star *ourSun)
   latEcl = atan2(zh, sqrt(xh*xh+yh*yh));
 
   xe = xg;
-  ye = yg * cos(ecl) - zg * sin(ecl);
-  ze = yg * sin(ecl) + zg * cos(ecl);
+  ye = yg * cosecl - zg * sinecl;
+  ze = yg * sinecl + zg * cosecl;
   rightAscension = atan2(ye, xe);
   declination = atan2(ze, sqrt(xe*xe + ye*ye));
   /* SG_LOG(SG_GENERAL, SG_INFO, "Planet found at : " 

simgear/ephemeris/moonpos.cxx

@@ -22,10 +22,11 @@
  * $Id$
  **************************************************************************/
 
-
+#include <simgear_config.h>
 #include <string.h>
 
 #include <simgear/debug/logstream.hxx>
+#include <simgear/math/SGMath.hxx>
 
 #include <math.h>
 
@@ -78,69 +79,90 @@ 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,
+    xv, yv, v, r, xh, yh, zh, zg, xe,
     Ls, Lm, D, F, mpar, gclat, rho, HA, g,
-    geoRa, geoDec;
+    geoRa, geoDec,
+    cosN, sinN, cosvw, sinvw, sinvw_cosi, cosecl, sinecl, rcoslatEcl,
+    FlesstwoD, MlesstwoD, twoD, twoM, twolat, alpha;
   
+  double max_loglux = -0.504030345621;
+  double min_loglux = -4.39964634562;
+  double conv = 1.0319696543787917;    // The log foot-candle to log lux conversion factor.
   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);  
+  ecl = SGD_DEGREES_TO_RADIANS * (23.4393 - 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
   
+  // repetitive calculations, minimised for speed
+  cosN = cos(N);
+  sinN = sin(N);
+  cosvw = cos(v+w);
+  sinvw = sin(v+w);
+  sinvw_cosi = sinvw * cos(i);
+  cosecl = cos(ecl);
+  sinecl = sin(ecl);
+
   // 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));
+  xh = r * (cosN * cosvw - sinN * sinvw_cosi);
+  yh = r * (sinN * cosvw + cosN * sinvw_cosi);
+  zh = r * (sinvw * 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.
+  /* Calculate a number of perturbation, i.e. disturbances caused by the 
+   * gravitational influence 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;
+
+  twoD = 2 * D;
+  twoM = 2 * M;
+  FlesstwoD = F - twoD;
+  MlesstwoD = M - twoD;
   
-  lonEcl += SGD_DEGREES_TO_RADIANS * (-1.274 * sin (M - 2*D)
-			  +0.658 * sin (2*D)
+  lonEcl += SGD_DEGREES_TO_RADIANS * (-1.274 * sin(MlesstwoD)
+			  +0.658 * sin(twoD)
 			  -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())
+			  -0.059 * sin(twoM - twoD)
+			  -0.057 * sin(MlesstwoD + ourSun->getM())
+			  +0.053 * sin(M + twoD)
+			  +0.046 * sin(twoD - 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)
+			  -0.015 * sin(2*F - twoD)
 			  +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)
+  latEcl += SGD_DEGREES_TO_RADIANS * (-0.173 * sin(FlesstwoD)
+			  -0.055 * sin(M - FlesstwoD)
+			  -0.046 * sin(M + FlesstwoD)
+			  +0.033 * sin(F + twoD)
+			  +0.017 * sin(twoM + F)
 			  );
-  r += (-0.58 * cos(M - 2*D)
-	-0.46 * cos(2*D)
+  r += (-0.58 * cos(MlesstwoD)
+	-0.46 * cos(twoD)
 	);
+  distance = r;
   // SG_LOG(SG_GENERAL, SG_INFO, "Running moon update");
-  xg = r * cos(lonEcl) * cos(latEcl);
-  yg = r * sin(lonEcl) * cos(latEcl);
+  rcoslatEcl = r * cos(latEcl);
+  xg =     cos(lonEcl) * rcoslatEcl;
+  yg =     sin(lonEcl) * rcoslatEcl;
   zg = r *               sin(latEcl);
   
   xe = xg;
-  ye = yg * cos(ecl) -zg * sin(ecl);
-  ze = yg * sin(ecl) +zg * cos(ecl);
+  ye = yg * cosecl -zg * sinecl;
+  ze = yg * sinecl +zg * cosecl;
 
   geoRa  = atan2(ye, xe);
   geoDec = atan2(ze, sqrt(xe*xe + ye*ye));
@@ -154,17 +176,17 @@ void MoonPos::updatePosition(double mjd, double lst, double lat, Star *ourSun)
   // 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 
+  // First calculate the moon's parallax, 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 );
+  twolat = 2 * SGD_DEGREES_TO_RADIANS * lat;
+  gclat = lat - 0.003358 * sin(twolat);
   // SG_LOG( SG_GENERAL, SG_INFO, "gclat = " << gclat );
 
-  rho = 0.99883 + 0.00167 * cos(2 * SGD_DEGREES_TO_RADIANS * lat);
+  rho = 0.99883 + 0.00167 * cos(twolat);
   // SG_LOG( SG_GENERAL, SG_INFO, "rho = " << rho );
   
   if (geoRa < 0)
@@ -193,4 +215,22 @@ void MoonPos::updatePosition(double mjd, double lst, double lat, Star *ourSun)
   /* SG_LOG( SG_GENERAL, SG_INFO, 
 	  "Ra = (" << (SGD_RADIANS_TO_DEGREES *rightAscension) 
 	  << "), Dec= (" << (SGD_RADIANS_TO_DEGREES *declination) << ")" ); */
+
+  // Moon age and phase calculation
+  age = lonEcl - ourSun->getlonEcl();
+  phase = (1 - cos(age)) / 2;
+
+  // The log of the illuminance of the moon outside the atmosphere.
+  // This is the base 10 log of equation 20 from Krisciunas K. and Schaefer B.E.
+  // (1991). A model of the brightness of moonlight, Publ. Astron. Soc. Pacif.
+  // 103(667), 1033-1039 (DOI: http://dx.doi.org/10.1086/132921).
+  alpha = SGD_RADIANS_TO_DEGREES * SGMiscd::normalizeAngle(age + SGMiscd::pi());
+  log_I = -0.4 * (3.84 + 0.026*fabs(alpha) + 4e-9*pow(alpha, 4.0));
+
+  // Convert from foot-candles to lux.
+  log_I += conv;
+
+  // The moon's illuminance factor, bracketed between 0 and 1.
+  I_factor = (log_I - max_loglux) / (max_loglux - min_loglux) + 1.0;
+  I_factor = SGMiscd::clip(I_factor, 0, 1);
 }

simgear/ephemeris/moonpos.hxx

@@ -36,6 +36,13 @@ class MoonPos : public CelestialBody
 
 private:
 
+    double xg, yg;     // the moon's rectangular geocentric coordinates
+    double ye, ze;     // the moon's rectangular equatorial coordinates
+    double distance;   // the moon's distance to the earth
+    double age;        // the moon's age from 0 to 2pi
+    double phase;      // the moon's phase
+    double log_I;      // the moon's illuminance outside the atmosphere (logged)
+    double I_factor;   // the illuminance factor for the moon, between 0 and 1.
     // void TexInit();  // This should move to the constructor eventually.
 
     // GLUquadricObj *moonObject;
@@ -54,7 +61,72 @@ public:
     ~MoonPos();
     void updatePosition(double mjd, double lst, double lat, Star *ourSun);
     // void newImage();
+    double getM() const;
+    double getw() const;
+    double getxg() const;
+    double getyg() const;
+    double getye() const;
+    double getze() const;
+    double getDistance() const;
+    double getAge() const;
+    double getPhase() const;
+    double getLogIlluminance() const;
+    double getIlluminanceFactor() const;
 };
 
+inline double MoonPos::getM() const
+{
+  return M;
+}
+
+inline double MoonPos::getw() const
+{
+  return w;
+}
+
+inline double MoonPos::getxg() const
+{
+  return xg;
+}
+
+inline double MoonPos::getyg() const
+{
+  return yg;
+}
+
+inline double MoonPos::getye() const
+{
+   return ye;
+}
+
+inline double MoonPos::getze() const
+{
+   return ze;
+}
+
+inline double MoonPos::getDistance() const
+{
+  return distance;
+}
+
+inline double MoonPos::getAge() const
+{
+  return age;
+}
+
+inline double MoonPos::getPhase() const
+{
+  return phase;
+}
+
+inline double MoonPos::getLogIlluminance() const
+{
+  return log_I;
+}
+
+inline double MoonPos::getIlluminanceFactor() const
+{
+  return I_factor;
+}
 
 #endif // _MOONPOS_HXX_

simgear/ephemeris/star.cxx

@@ -22,6 +22,7 @@
  * $Id$
  **************************************************************************/
 
+#include <simgear_config.h>
 #include <cmath>
 
 #include <simgear/debug/logstream.hxx>

simgear/ephemeris/star.hxx

@@ -33,6 +33,7 @@ class Star : public CelestialBody
 
 private:
 
+    double lonEcl;     // the sun's true longitude
     double xs, ys;     // the sun's rectangular geocentric coordinates
     double ye, ze;     // the sun's rectangularequatorial rectangular geocentric coordinates
     double distance;   // the sun's distance to the earth
@@ -50,6 +51,7 @@ public:
     double getye() const;
     double getze() const;
     double getDistance() const;
+    double getlonEcl() const;
 };
 
 
@@ -88,6 +90,10 @@ inline double Star::getDistance() const
   return distance;
 }
 
+inline double Star::getlonEcl() const
+{
+  return lonEcl;
+}
 
 #endif // _STAR_HXX_
 

simgear/ephemeris/stardata.cxx

@@ -26,7 +26,7 @@
 
 #include <simgear/debug/logstream.hxx>
 #include <simgear/misc/sg_path.hxx>
-#include <simgear/misc/sgstream.hxx>
+#include <simgear/io/iostreams/sgstream.hxx>
 
 #include "stardata.hxx"
 
@@ -55,12 +55,11 @@ bool SGStarData::load( const SGPath& path ) {
     // build the full path name to the stars data base file
     SGPath tmp = path;
     tmp.append( "stars" );
-    SG_LOG( SG_ASTRO, SG_INFO, "  Loading stars from " << tmp.str() );
+    SG_LOG( SG_ASTRO, SG_INFO, "  Loading stars from " << tmp );
 
-    sg_gzifstream in( tmp.str() );
+    sg_gzifstream in( tmp );
     if ( ! in.is_open() ) {
-	SG_LOG( SG_ASTRO, SG_ALERT, "Cannot open star file: "
-		<< tmp.str() );
+	SG_LOG( SG_ASTRO, SG_ALERT, "Cannot open star file: " << tmp );
         return false;
     }
 

simgear/hla/HLAArrayDataType.cxx

@@ -19,6 +19,8 @@
 #  include <simgear_config.h>
 #endif
 
+#include <algorithm>
+
 #include <simgear/compiler.h>
 
 #include "HLAArrayDataType.hxx"

simgear/hla/HLADataType.cxx

@@ -19,6 +19,8 @@
 #  include <simgear_config.h>
 #endif
 
+#include <algorithm>
+
 #include <simgear/compiler.h>
 
 #include "HLADataType.hxx"

simgear/hla/HLAEnumeratedDataType.cxx

@@ -21,11 +21,11 @@
 
 #include <simgear/compiler.h>
 
-#include "HLAEnumeratedDataType.hxx"
-
+#include <algorithm>
 #include <map>
 #include <sstream>
 #include <vector>
+
 #include "HLAEnumeratedDataType.hxx"
 #include "HLADataTypeVisitor.hxx"