Move binary file reading and writing to simgear.
This commit is contained in:
curt
@@ -142,4 +142,11 @@
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#define FG_EPSILON 0.0000001
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// Highest binobj format version we know how to read/write. This starts at
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// 0 and can go up to 65535
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#define SG_BINOBJ_VERSION 5
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// for backwards compatibility
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#define SG_SCENERY_FILE_FORMAT "0.4"
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#endif // _SG_CONSTANTS_H
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@@ -4,12 +4,16 @@ lib_LIBRARIES = libsgio.a
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include_HEADERS = \
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iochannel.hxx \
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lowlevel.hxx \
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sg_binobj.hxx \
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sg_file.hxx \
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sg_serial.hxx \
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sg_socket.hxx
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libsgio_a_SOURCES = \
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iochannel.cxx \
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lowlevel.cxx \
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sg_binobj.cxx \
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sg_file.cxx \
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sg_serial.cxx \
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sg_socket.cxx
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306
simgear/io/lowlevel.cxx
Normal file
306
simgear/io/lowlevel.cxx
Normal file
@@ -0,0 +1,306 @@
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// lowlevel.hxx -- routines to handle lowlevel compressed binary IO of
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// various datatypes
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//
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// Shamelessly adapted from plib (plib.sourceforge.net) January 2001
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//
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// Original version Copyright (C) 2000 the plib team
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// Local changes Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
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//
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||||
// This program is free software; you can redistribute it and/or modify
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||||
// it under the terms of the GNU General Public License as published by
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||||
// the Free Software Foundation; either version 2 of the License, or
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||||
// (at your option) any later version.
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||||
//
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||||
// This program is distributed in the hope that it will be useful,
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||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
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||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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||||
// GNU General Public License for more details.
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||||
//
|
||||
// You should have received a copy of the GNU General Public License
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||||
// along with this program; if not, write to the Free Software
|
||||
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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// $Id$
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//
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#include "lowlevel.hxx"
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static int read_error = false ;
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static int write_error = false ;
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int sgReadError (void) { return read_error ; }
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int sgWriteError (void) { return write_error ; }
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void sgReadChar ( gzFile fd, char *var )
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{
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if ( gzread ( fd, var, sizeof(char) ) == 1 ) return ;
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read_error = true ;
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}
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void sgWriteChar ( gzFile fd, const char var )
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{
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if ( gzwrite ( fd, (void *)(&var), sizeof(char) ) == 1 ) return ;
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write_error = true ;
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}
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void sgReadFloat ( gzFile fd, float *var )
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{
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if ( gzread ( fd, var, sizeof(float) ) == 1 ) return ;
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read_error = true ;
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}
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void sgWriteFloat ( gzFile fd, const float var )
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{
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if ( gzwrite ( fd, (void *)(&var), sizeof(float) ) == 1 ) return ;
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write_error = true ;
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}
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void sgReadDouble ( gzFile fd, double *var )
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{
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if ( gzread ( fd, var, sizeof(double) ) == 1 ) return ;
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read_error = true ;
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}
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void sgWriteDouble ( gzFile fd, const double var )
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{
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if ( gzwrite ( fd, (void *)(&var), sizeof(double) ) == 1 ) return ;
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write_error = true ;
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}
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void sgReadUInt ( gzFile fd, unsigned int *var )
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{
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if ( gzread ( fd, var, sizeof(unsigned int) ) == 1 ) return ;
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read_error = true ;
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}
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void sgWriteUInt ( gzFile fd, const unsigned int var )
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{
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if ( gzwrite ( fd, (void *)(&var), sizeof(unsigned int) ) == 1 ) return ;
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write_error = true ;
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}
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void sgReadInt ( gzFile fd, int *var )
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{
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if ( gzread ( fd, var, sizeof(int) ) == 1 ) return ;
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read_error = true ;
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}
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void sgWriteInt ( gzFile fd, const int var )
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{
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if ( gzwrite ( fd, (void *)(&var), sizeof(int) ) == 1 ) return ;
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write_error = true ;
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}
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void sgReadLong ( gzFile fd, long int *var )
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{
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if ( gzread ( fd, var, sizeof(long int) ) == 1 ) return ;
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read_error = true ;
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}
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void sgWriteLong ( gzFile fd, const long int var )
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{
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if ( gzwrite ( fd, (void *)(&var), sizeof(long int) ) == 1 ) return ;
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write_error = true ;
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}
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void sgReadUShort ( gzFile fd, unsigned short *var )
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{
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if ( gzread ( fd, var, sizeof(unsigned short) ) == 1 ) return ;
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read_error = true ;
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}
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void sgWriteUShort ( gzFile fd, const unsigned short var )
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{
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if ( gzwrite ( fd, (void *)(&var), sizeof(unsigned short) ) == 1 ) return ;
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write_error = true ;
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}
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void sgReadShort ( gzFile fd, short *var )
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{
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if ( gzread ( fd, var, sizeof(short) ) == 1 ) return ;
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read_error = true ;
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}
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void sgWriteShort ( gzFile fd, const short var )
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{
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if ( gzwrite ( fd, (void *)(&var), sizeof(short) ) == 1 ) return ;
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write_error = true ;
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}
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void sgReadFloat ( gzFile fd, const unsigned int n, float *var )
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{
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if ( gzread ( fd, var, sizeof(float) * n ) == (int)n ) return ;
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read_error = true ;
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}
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void sgWriteFloat ( gzFile fd, const unsigned int n, const float *var )
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{
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if ( gzwrite ( fd, (void *)var, sizeof(float) * n ) == (int)n ) return ;
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write_error = true ;
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}
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void sgReadDouble ( gzFile fd, const unsigned int n, double *var )
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{
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if ( gzread ( fd, var, sizeof(double) * n ) == (int)n ) return ;
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read_error = true ;
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}
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void sgWriteDouble ( gzFile fd, const unsigned int n, const double *var )
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{
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if ( gzwrite ( fd, (void *)var, sizeof(double) * n ) == (int)n ) return ;
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write_error = true ;
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}
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void sgReadBytes ( gzFile fd, const unsigned int n, void *var )
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{
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if ( n == 0)
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return;
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if ( gzread ( fd, var, n ) == 1 )
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return ;
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read_error = true ;
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}
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void sgWriteBytes ( gzFile fd, const unsigned int n, const void *var )
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{
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if ( n == 0)
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return;
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if ( gzwrite ( fd, (void *)var, n ) == 1 )
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return ;
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write_error = true ;
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}
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void sgReadUShort ( gzFile fd, const unsigned int n, unsigned short *var )
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{
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if ( gzread ( fd, var, sizeof(unsigned short) * n ) == (int)n ) return ;
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read_error = true ;
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}
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void sgWriteUShort ( gzFile fd, const unsigned int n, const unsigned short *var )
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{
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if ( gzwrite ( fd, (void *)var, sizeof(unsigned short) * n ) == (int)n ) return ;
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write_error = true ;
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}
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void sgReadShort ( gzFile fd, const unsigned int n, short *var )
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{
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if ( gzread ( fd, var, sizeof(short) * n ) == (int)n ) return ;
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read_error = true ;
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}
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void sgWriteShort ( gzFile fd, const unsigned int n, const short *var )
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{
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if ( gzwrite ( fd, (void *)var, sizeof(short) * n ) == (int)n ) return ;
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write_error = true ;
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}
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void sgReadUInt ( gzFile fd, const unsigned int n, unsigned int *var )
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{
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if ( gzread ( fd, var, sizeof(unsigned int)* n ) == (int)n ) return ;
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read_error = true ;
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}
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void sgWriteUInt ( gzFile fd, const unsigned int n, const unsigned int *var )
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{
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if ( gzwrite ( fd, (void *)var, sizeof(unsigned int) * n ) == (int)n ) return ;
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write_error = true ;
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}
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void sgReadInt ( gzFile fd, const unsigned int n, int *var )
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{
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if ( gzread ( fd, var, sizeof(int) * n ) == (int)n ) return ;
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read_error = true ;
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}
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void sgWriteInt ( gzFile fd, const unsigned int n, const int *var )
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{
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if ( gzwrite ( fd, (void *)var, sizeof(int) * n ) == (int)n ) return ;
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write_error = true ;
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}
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#define MAX_ENTITY_NAME_LENGTH 1024
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void sgReadString ( gzFile fd, char **var )
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{
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int i ;
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char s [ MAX_ENTITY_NAME_LENGTH ] ;
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for ( i = 0 ; i < MAX_ENTITY_NAME_LENGTH ; i++ )
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{
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int c = gzgetc ( fd ) ;
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s [ i ] = c ;
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if ( c == '\0' )
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break ;
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}
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if ( i >= MAX_ENTITY_NAME_LENGTH-1 )
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s [ MAX_ENTITY_NAME_LENGTH-1 ] = '\0' ;
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if ( s[0] == '\0' )
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*var = NULL ;
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else
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{
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*var = new char [ strlen(s)+1 ] ;
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strcpy ( *var, s ) ;
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}
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}
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void sgWriteString ( gzFile fd, const char *var )
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{
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if ( var != NULL ) {
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if ( gzwrite ( fd, (void *)var, strlen(var) + 1 ) ==
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(int)(strlen(var) + 1) )
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return ;
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} else {
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gzputc( fd, 0 );
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}
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}
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void sgReadVec2 ( gzFile fd, sgVec2 var ) { sgReadFloat ( fd, 2, var ) ; }
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void sgWriteVec2 ( gzFile fd, const sgVec2 var ) { sgWriteFloat ( fd, 2, var ) ; }
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void sgReadVec3 ( gzFile fd, sgVec3 var ) { sgReadFloat ( fd, 3, var ) ; }
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void sgWriteVec3 ( gzFile fd, const sgVec3 var ) { sgWriteFloat ( fd, 3, var ) ; }
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void sgReaddVec3 ( gzFile fd, sgdVec3 var ) { sgReadDouble ( fd, 3, var ) ; }
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void sgWritedVec3 ( gzFile fd, const sgdVec3 var ) { sgWriteDouble ( fd, 3, var ) ; }
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void sgReadVec4 ( gzFile fd, sgVec4 var ) { sgReadFloat ( fd, 4, var ) ; }
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void sgWriteVec4 ( gzFile fd, const sgVec4 var ) { sgWriteFloat ( fd, 4, var ) ; }
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void sgReadMat4 ( gzFile fd, sgMat4 var ) { sgReadFloat ( fd, 16, (float *)var ) ; }
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void sgWriteMat4 ( gzFile fd, const sgMat4 var ) { sgWriteFloat ( fd, 16, (float *)var ) ; }
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88
simgear/io/lowlevel.hxx
Normal file
88
simgear/io/lowlevel.hxx
Normal file
@@ -0,0 +1,88 @@
|
||||
// lowlevel.hxx -- routines to handle lowlevel compressed binary IO of
|
||||
// various datatypes
|
||||
//
|
||||
// Shamelessly adapted from plib January 2001
|
||||
//
|
||||
// Original version Copyright (C) 2000 the plib team
|
||||
// Local changes Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
|
||||
//
|
||||
// This program is free software; you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation; either version 2 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with this program; if not, write to the Free Software
|
||||
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
//
|
||||
// $Id$
|
||||
//
|
||||
|
||||
|
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#ifndef _SG_LOWLEVEL_HXX
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#define _SG_LOWLEVEL_HXX
|
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|
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|
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#include <stdio.h>
|
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#include <zlib.h>
|
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|
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#include <plib/sg.h>
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|
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|
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void sgReadChar ( gzFile fd, char *var ) ;
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void sgWriteChar ( gzFile fd, const char var ) ;
|
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void sgReadFloat ( gzFile fd, float *var ) ;
|
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void sgWriteFloat ( gzFile fd, const float var ) ;
|
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void sgReadDouble ( gzFile fd, double *var ) ;
|
||||
void sgWriteDouble ( gzFile fd, const double var ) ;
|
||||
void sgReadUInt ( gzFile fd, unsigned int *var ) ;
|
||||
void sgWriteUInt ( gzFile fd, const unsigned int var ) ;
|
||||
void sgReadInt ( gzFile fd, int *var ) ;
|
||||
void sgWriteInt ( gzFile fd, const int var ) ;
|
||||
void sgReadLong ( gzFile fd, long int *var ) ;
|
||||
void sgWriteLong ( gzFile fd, const long int var ) ;
|
||||
void sgReadUShort ( gzFile fd, unsigned short *var ) ;
|
||||
void sgWriteUShort ( gzFile fd, const unsigned short var ) ;
|
||||
void sgReadShort ( gzFile fd, short *var ) ;
|
||||
void sgWriteShort ( gzFile fd, const short var ) ;
|
||||
|
||||
void sgReadFloat ( gzFile fd, const unsigned int n, float *var ) ;
|
||||
void sgWriteFloat ( gzFile fd, const unsigned int n, const float *var ) ;
|
||||
void sgReadDouble ( gzFile fd, const unsigned int n, double *var ) ;
|
||||
void sgWriteDouble ( gzFile fd, const unsigned int n, const double *var ) ;
|
||||
void sgReadUInt ( gzFile fd, const unsigned int n, unsigned int *var ) ;
|
||||
void sgWriteUInt ( gzFile fd, const unsigned int n, const unsigned int *var ) ;
|
||||
void sgReadInt ( gzFile fd, const unsigned int n, int *var ) ;
|
||||
void sgWriteInt ( gzFile fd, const unsigned int n, const int *var ) ;
|
||||
void sgReadUShort ( gzFile fd, const unsigned int n, unsigned short *var ) ;
|
||||
void sgWriteUShort ( gzFile fd, const unsigned int n, const unsigned short *var ) ;
|
||||
void sgReadShort ( gzFile fd, const unsigned int n, short *var ) ;
|
||||
void sgWriteShort ( gzFile fd, const unsigned int n, const short *var ) ;
|
||||
void sgReadBytes ( gzFile fd, const unsigned int n, void *var ) ;
|
||||
void sgWriteBytes ( gzFile fd, const unsigned int n, const void *var ) ;
|
||||
|
||||
void sgReadString ( gzFile fd, char **var ) ;
|
||||
void sgWriteString ( gzFile fd, const char *var ) ;
|
||||
|
||||
void sgReadVec2 ( gzFile fd, sgVec2 var ) ;
|
||||
void sgWriteVec2 ( gzFile fd, const sgVec2 var ) ;
|
||||
void sgReadVec3 ( gzFile fd, sgVec3 var ) ;
|
||||
void sgWriteVec3 ( gzFile fd, const sgVec3 var ) ;
|
||||
void sgReaddVec3 ( gzFile fd, sgdVec3 var ) ;
|
||||
void sgWritedVec3 ( gzFile fd, const sgdVec3 var ) ;
|
||||
void sgReadVec4 ( gzFile fd, sgVec4 var ) ;
|
||||
void sgWriteVec4 ( gzFile fd, const sgVec4 var ) ;
|
||||
|
||||
void sgReadMat4 ( gzFile fd, sgMat4 var ) ;
|
||||
void sgWriteMat4 ( gzFile fd, const sgMat4 var ) ;
|
||||
|
||||
int sgReadError ( void ) ;
|
||||
int sgWriteError ( void ) ;
|
||||
|
||||
|
||||
#endif // _SG_LOWLEVEL_HXX
|
||||
950
simgear/io/sg_binobj.cxx
Normal file
950
simgear/io/sg_binobj.cxx
Normal file
@@ -0,0 +1,950 @@
|
||||
// sg_binobj.cxx -- routines to read and write low level flightgear 3d objects
|
||||
//
|
||||
// Written by Curtis Olson, started January 2000.
|
||||
//
|
||||
// Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
|
||||
//
|
||||
// This program is free software; you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation; either version 2 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with this program; if not, write to the Free Software
|
||||
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
//
|
||||
// $Id$
|
||||
//
|
||||
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include <config.h>
|
||||
#endif
|
||||
|
||||
#include <simgear/compiler.h>
|
||||
|
||||
#include <stdio.h>
|
||||
#include <time.h>
|
||||
#include <zlib.h>
|
||||
|
||||
#include <list>
|
||||
#include STL_STRING
|
||||
|
||||
#include <simgear/bucket/newbucket.hxx>
|
||||
|
||||
#include "lowlevel.hxx"
|
||||
#include "sg_binobj.hxx"
|
||||
|
||||
#ifdef _MSC_VER
|
||||
# include <Win32/mkdir.hpp>
|
||||
#endif
|
||||
|
||||
FG_USING_STD( cout );
|
||||
FG_USING_STD( endl );
|
||||
|
||||
enum {
|
||||
SG_BOUNDING_SPHERE = 0,
|
||||
|
||||
SG_VERTEX_LIST = 1,
|
||||
SG_NORMAL_LIST = 2,
|
||||
SG_TEXCOORD_LIST = 3,
|
||||
|
||||
SG_TRIANGLE_FACES = 10,
|
||||
SG_TRIANGLE_STRIPS = 11,
|
||||
SG_TRIANGLE_FANS = 12
|
||||
} tgObjectTypes;
|
||||
|
||||
enum {
|
||||
SG_MATERIAL = 0
|
||||
} tgPropertyTypes;
|
||||
|
||||
|
||||
// calculate the center of a list of points, by taking the halfway
|
||||
// point between the min and max points.
|
||||
static Point3D calc_center( point_list& wgs84_nodes ) {
|
||||
Point3D p, min, max;
|
||||
|
||||
if ( wgs84_nodes.size() ) {
|
||||
min = max = wgs84_nodes[0];
|
||||
} else {
|
||||
min = max = Point3D( 0 );
|
||||
}
|
||||
|
||||
for ( int i = 0; i < (int)wgs84_nodes.size(); ++i ) {
|
||||
p = wgs84_nodes[i];
|
||||
|
||||
if ( p.x() < min.x() ) { min.setx( p.x() ); }
|
||||
if ( p.y() < min.y() ) { min.sety( p.y() ); }
|
||||
if ( p.z() < min.z() ) { min.setz( p.z() ); }
|
||||
|
||||
if ( p.x() > max.x() ) { max.setx( p.x() ); }
|
||||
if ( p.y() > max.y() ) { max.sety( p.y() ); }
|
||||
if ( p.z() > max.z() ) { max.setz( p.z() ); }
|
||||
}
|
||||
|
||||
return ( min + max ) / 2.0;
|
||||
}
|
||||
|
||||
// calculate the bounding sphere. Center is the center of the
|
||||
// tile and zero elevation
|
||||
double sgCalcBoundingRadius( Point3D center, point_list& wgs84_nodes ) {
|
||||
double dist_squared;
|
||||
double radius_squared = 0;
|
||||
|
||||
for ( int i = 0; i < (int)wgs84_nodes.size(); ++i ) {
|
||||
dist_squared = center.distance3Dsquared( wgs84_nodes[i] );
|
||||
if ( dist_squared > radius_squared ) {
|
||||
radius_squared = dist_squared;
|
||||
}
|
||||
}
|
||||
|
||||
return sqrt(radius_squared);
|
||||
}
|
||||
|
||||
|
||||
// write out the structures to an ASCII file. We assume that the
|
||||
// groups come to us sorted by material property. If not, things
|
||||
// don't break, but the result won't be as optimal.
|
||||
void sgWriteAsciiObj( const string& base, const string& name, const SGBucket& b,
|
||||
Point3D gbs_center, float gbs_radius,
|
||||
const point_list& wgs84_nodes, const point_list& normals,
|
||||
const point_list& texcoords,
|
||||
const group_list& tris_v, const group_list& tris_tc,
|
||||
const string_list& tri_materials,
|
||||
const group_list& strips_v, const group_list& strips_tc,
|
||||
const string_list& strip_materials,
|
||||
const group_list& fans_v, const group_list& fans_tc,
|
||||
const string_list& fan_materials )
|
||||
{
|
||||
Point3D p;
|
||||
int i, j;
|
||||
|
||||
string dir = base + "/" + b.gen_base_path();
|
||||
string command = "mkdir -p " + dir;
|
||||
#ifdef _MSC_VER
|
||||
fg_mkdir( dir.c_str() );
|
||||
#else
|
||||
system(command.c_str());
|
||||
#endif
|
||||
|
||||
// string file = dir + "/" + b.gen_index_str();
|
||||
string file = dir + "/" + name;
|
||||
cout << "Output file = " << file << endl;
|
||||
|
||||
FILE *fp;
|
||||
if ( (fp = fopen( file.c_str(), "w" )) == NULL ) {
|
||||
cout << "ERROR: opening " << file << " for writing!" << endl;
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
cout << "triangles size = " << tris_v.size() << " tri_materials = "
|
||||
<< tri_materials.size() << endl;
|
||||
cout << "strips size = " << strips_v.size() << " strip_materials = "
|
||||
<< strip_materials.size() << endl;
|
||||
cout << "fans size = " << fans_v.size() << " fan_materials = "
|
||||
<< fan_materials.size() << endl;
|
||||
|
||||
cout << "points = " << wgs84_nodes.size() << endl;
|
||||
cout << "tex coords = " << texcoords.size() << endl;
|
||||
// write headers
|
||||
fprintf(fp, "# FGFS Scenery\n");
|
||||
fprintf(fp, "# Version %s\n", SG_SCENERY_FILE_FORMAT);
|
||||
|
||||
time_t calendar_time = time(NULL);
|
||||
struct tm *local_tm;
|
||||
local_tm = localtime( &calendar_time );
|
||||
char time_str[256];
|
||||
strftime( time_str, 256, "%a %b %d %H:%M:%S %Z %Y", local_tm);
|
||||
fprintf(fp, "# Created %s\n", time_str );
|
||||
fprintf(fp, "\n");
|
||||
|
||||
// write bounding sphere
|
||||
fprintf(fp, "# gbs %.5f %.5f %.5f %.2f\n",
|
||||
gbs_center.x(), gbs_center.y(), gbs_center.z(), gbs_radius);
|
||||
fprintf(fp, "\n");
|
||||
|
||||
// dump vertex list
|
||||
fprintf(fp, "# vertex list\n");
|
||||
for ( i = 0; i < (int)wgs84_nodes.size(); ++i ) {
|
||||
p = wgs84_nodes[i] - gbs_center;
|
||||
|
||||
fprintf(fp, "v %.5f %.5f %.5f\n", p.x(), p.y(), p.z() );
|
||||
}
|
||||
fprintf(fp, "\n");
|
||||
|
||||
fprintf(fp, "# vertex normal list\n");
|
||||
for ( i = 0; i < (int)normals.size(); ++i ) {
|
||||
p = normals[i];
|
||||
fprintf(fp, "vn %.5f %.5f %.5f\n", p.x(), p.y(), p.z() );
|
||||
}
|
||||
fprintf(fp, "\n");
|
||||
|
||||
// dump texture coordinates
|
||||
fprintf(fp, "# texture coordinate list\n");
|
||||
for ( i = 0; i < (int)texcoords.size(); ++i ) {
|
||||
p = texcoords[i];
|
||||
fprintf(fp, "vt %.5f %.5f\n", p.x(), p.y() );
|
||||
}
|
||||
fprintf(fp, "\n");
|
||||
|
||||
// dump individual triangles if they exist
|
||||
if ( tris_v.size() > 0 ) {
|
||||
fprintf(fp, "# triangle groups\n");
|
||||
|
||||
int start = 0;
|
||||
int end = 1;
|
||||
string material;
|
||||
while ( start < (int)tri_materials.size() ) {
|
||||
// find next group
|
||||
material = tri_materials[start];
|
||||
while ( (end < (int)tri_materials.size()) &&
|
||||
(material == tri_materials[end]) )
|
||||
{
|
||||
// cout << "end = " << end << endl;
|
||||
end++;
|
||||
}
|
||||
// cout << "group = " << start << " to " << end - 1 << endl;
|
||||
|
||||
// make a list of points for the group
|
||||
point_list group_nodes;
|
||||
group_nodes.clear();
|
||||
Point3D bs_center;
|
||||
double bs_radius = 0;
|
||||
for ( i = start; i < end; ++i ) {
|
||||
for ( j = 0; j < (int)tris_v[i].size(); ++j ) {
|
||||
group_nodes.push_back( wgs84_nodes[ tris_v[i][j] ] );
|
||||
bs_center = calc_center( group_nodes );
|
||||
bs_radius = sgCalcBoundingRadius( bs_center, group_nodes );
|
||||
}
|
||||
}
|
||||
|
||||
// write group headers
|
||||
fprintf(fp, "\n");
|
||||
fprintf(fp, "# usemtl %s\n", material.c_str());
|
||||
fprintf(fp, "# bs %.4f %.4f %.4f %.2f\n",
|
||||
bs_center.x(), bs_center.y(), bs_center.z(), bs_radius);
|
||||
|
||||
// write groups
|
||||
for ( i = start; i < end; ++i ) {
|
||||
fprintf(fp, "f");
|
||||
for ( j = 0; j < (int)tris_v[i].size(); ++j ) {
|
||||
fprintf(fp, " %d/%d", tris_v[i][j], tris_tc[i][j] );
|
||||
}
|
||||
fprintf(fp, "\n");
|
||||
}
|
||||
|
||||
start = end;
|
||||
end = start + 1;
|
||||
}
|
||||
}
|
||||
|
||||
// dump triangle groups
|
||||
if ( strips_v.size() > 0 ) {
|
||||
fprintf(fp, "# triangle strips\n");
|
||||
|
||||
int start = 0;
|
||||
int end = 1;
|
||||
string material;
|
||||
while ( start < (int)strip_materials.size() ) {
|
||||
// find next group
|
||||
material = strip_materials[start];
|
||||
while ( (end < (int)strip_materials.size()) &&
|
||||
(material == strip_materials[end]) )
|
||||
{
|
||||
// cout << "end = " << end << endl;
|
||||
end++;
|
||||
}
|
||||
// cout << "group = " << start << " to " << end - 1 << endl;
|
||||
|
||||
// make a list of points for the group
|
||||
point_list group_nodes;
|
||||
group_nodes.clear();
|
||||
Point3D bs_center;
|
||||
double bs_radius = 0;
|
||||
for ( i = start; i < end; ++i ) {
|
||||
for ( j = 0; j < (int)strips_v[i].size(); ++j ) {
|
||||
group_nodes.push_back( wgs84_nodes[ strips_v[i][j] ] );
|
||||
bs_center = calc_center( group_nodes );
|
||||
bs_radius = sgCalcBoundingRadius( bs_center, group_nodes );
|
||||
}
|
||||
}
|
||||
|
||||
// write group headers
|
||||
fprintf(fp, "\n");
|
||||
fprintf(fp, "# usemtl %s\n", material.c_str());
|
||||
fprintf(fp, "# bs %.4f %.4f %.4f %.2f\n",
|
||||
bs_center.x(), bs_center.y(), bs_center.z(), bs_radius);
|
||||
|
||||
// write groups
|
||||
for ( i = start; i < end; ++i ) {
|
||||
fprintf(fp, "ts");
|
||||
for ( j = 0; j < (int)strips_v[i].size(); ++j ) {
|
||||
fprintf(fp, " %d/%d", strips_v[i][j], strips_tc[i][j] );
|
||||
}
|
||||
fprintf(fp, "\n");
|
||||
}
|
||||
|
||||
start = end;
|
||||
end = start + 1;
|
||||
}
|
||||
}
|
||||
|
||||
// close the file
|
||||
fclose(fp);
|
||||
|
||||
command = "gzip --force --best " + file;
|
||||
system(command.c_str());
|
||||
}
|
||||
|
||||
|
||||
// read a binary file and populate the provided structures.
|
||||
void sgReadBinObj( const string& file,
|
||||
Point3D &gbs_center, float *gbs_radius,
|
||||
point_list& wgs84_nodes, point_list& normals,
|
||||
point_list& texcoords,
|
||||
group_list& tris_v, group_list& tris_tc,
|
||||
string_list& tri_materials,
|
||||
group_list& strips_v, group_list& strips_tc,
|
||||
string_list& strip_materials,
|
||||
group_list& fans_v, group_list& fans_tc,
|
||||
string_list& fan_materials )
|
||||
{
|
||||
Point3D p;
|
||||
int i, j, k, m;
|
||||
|
||||
// zero out structures
|
||||
wgs84_nodes.clear();
|
||||
normals.clear();
|
||||
texcoords.clear();
|
||||
|
||||
tris_v.clear();
|
||||
tris_tc.clear();
|
||||
tri_materials.clear();
|
||||
|
||||
strips_v.clear();
|
||||
strips_tc.clear();
|
||||
strip_materials.clear();
|
||||
|
||||
fans_v.clear();
|
||||
fans_tc.clear();
|
||||
fan_materials.clear();
|
||||
|
||||
cout << "Loading binary input file = " << file << endl;
|
||||
|
||||
gzFile fp;
|
||||
if ( (fp = gzopen( file.c_str(), "rb" )) == NULL ) {
|
||||
string filegz = file + ".gz";
|
||||
if ( (fp = gzopen( filegz.c_str(), "rb" )) == NULL ) {
|
||||
cout << "ERROR: opening " << file << " or " << filegz
|
||||
<< "for reading!" << endl;
|
||||
exit(-1);
|
||||
}
|
||||
}
|
||||
|
||||
// read headers
|
||||
int header, version;
|
||||
sgReadInt( fp, &header );
|
||||
if ( ((header & 0xFF000000) >> 24) == 'T' &&
|
||||
((header & 0x00FF0000) >> 16) == 'G' ) {
|
||||
cout << "Good header" << endl;
|
||||
// read file version
|
||||
version = (header & 0x0000FFFF);
|
||||
cout << "File version = " << version << endl;
|
||||
}
|
||||
|
||||
// read creation time
|
||||
time_t calendar_time;
|
||||
sgReadLong( fp, &calendar_time );
|
||||
struct tm *local_tm;
|
||||
local_tm = localtime( &calendar_time );
|
||||
char time_str[256];
|
||||
strftime( time_str, 256, "%a %b %d %H:%M:%S %Z %Y", local_tm);
|
||||
cout << "File created on " << time_str << endl;
|
||||
|
||||
// read number of top level objects
|
||||
short nobjects;
|
||||
sgReadShort( fp, &nobjects );
|
||||
cout << "Total objects to read = " << nobjects << endl;
|
||||
|
||||
// read in objects
|
||||
for ( i = 0; i < nobjects; ++i ) {
|
||||
// read object header
|
||||
char obj_type;
|
||||
short nproperties, nelements;
|
||||
sgReadChar( fp, &obj_type );
|
||||
sgReadShort( fp, &nproperties );
|
||||
sgReadShort( fp, &nelements );
|
||||
|
||||
cout << "object " << i << " = " << (int)obj_type << " props = "
|
||||
<< nproperties << " elements = " << nelements << endl;
|
||||
|
||||
if ( obj_type == SG_BOUNDING_SPHERE ) {
|
||||
// read bounding sphere properties
|
||||
for ( j = 0; j < nproperties; ++j ) {
|
||||
char prop_type;
|
||||
sgReadChar( fp, &prop_type );
|
||||
|
||||
int nbytes;
|
||||
sgReadInt( fp, &nbytes );
|
||||
cout << "property size = " << nbytes << endl;
|
||||
char buf[nbytes];
|
||||
char *ptr = buf;
|
||||
sgReadBytes( fp, nbytes, ptr );
|
||||
}
|
||||
|
||||
// read bounding sphere elements
|
||||
for ( j = 0; j < nelements; ++j ) {
|
||||
int nbytes;
|
||||
sgReadInt( fp, &nbytes );
|
||||
cout << "element size = " << nbytes << endl;
|
||||
char buf[nbytes];
|
||||
char *ptr = buf;
|
||||
sgReadBytes( fp, nbytes, ptr );
|
||||
|
||||
double *dptr = (double *)ptr;
|
||||
gbs_center = Point3D( dptr[0], dptr[1], dptr[2] );
|
||||
cout << "Center = " << gbs_center << endl;
|
||||
ptr += sizeof(double) * 3;
|
||||
|
||||
float *fptr = (float *)ptr;
|
||||
*gbs_radius = fptr[0];
|
||||
cout << "Bounding radius = " << *gbs_radius << endl;
|
||||
}
|
||||
} else if ( obj_type == SG_VERTEX_LIST ) {
|
||||
// read vertex list properties
|
||||
for ( j = 0; j < nproperties; ++j ) {
|
||||
char prop_type;
|
||||
sgReadChar( fp, &prop_type );
|
||||
|
||||
int nbytes;
|
||||
sgReadInt( fp, &nbytes );
|
||||
cout << "property size = " << nbytes << endl;
|
||||
char buf[nbytes];
|
||||
char *ptr = buf;
|
||||
sgReadBytes( fp, nbytes, ptr );
|
||||
}
|
||||
|
||||
// read vertex list elements
|
||||
for ( j = 0; j < nelements; ++j ) {
|
||||
int nbytes;
|
||||
sgReadInt( fp, &nbytes );
|
||||
cout << "element size = " << nbytes << endl;
|
||||
char buf[nbytes];
|
||||
char *ptr = buf;
|
||||
sgReadBytes( fp, nbytes, ptr );
|
||||
int count = nbytes / (sizeof(float) * 3);
|
||||
float *fptr = (float *)ptr;
|
||||
for ( k = 0; k < count; ++k ) {
|
||||
p = Point3D( fptr[0], fptr[1], fptr[2] );
|
||||
cout << "node = " << p << endl;
|
||||
wgs84_nodes.push_back( p );
|
||||
fptr += 3;
|
||||
}
|
||||
}
|
||||
} else if ( obj_type == SG_NORMAL_LIST ) {
|
||||
// read normal list properties
|
||||
for ( j = 0; j < nproperties; ++j ) {
|
||||
char prop_type;
|
||||
sgReadChar( fp, &prop_type );
|
||||
|
||||
int nbytes;
|
||||
sgReadInt( fp, &nbytes );
|
||||
cout << "property size = " << nbytes << endl;
|
||||
char buf[nbytes];
|
||||
char *ptr = buf;
|
||||
sgReadBytes( fp, nbytes, ptr );
|
||||
}
|
||||
|
||||
// read normal list elements
|
||||
for ( j = 0; j < nelements; ++j ) {
|
||||
int nbytes;
|
||||
sgReadInt( fp, &nbytes );
|
||||
cout << "element size = " << nbytes << endl;
|
||||
char buf[nbytes];
|
||||
char *ptr = buf;
|
||||
sgReadBytes( fp, nbytes, ptr );
|
||||
int count = nbytes / 3;
|
||||
for ( k = 0; k < count; ++k ) {
|
||||
p = Point3D( ptr[0] / 256.0, ptr[1] / 256.0,
|
||||
ptr[2] / 256.0 );
|
||||
cout << "normal = " << p << endl;
|
||||
normals.push_back( p );
|
||||
ptr += 3;
|
||||
}
|
||||
}
|
||||
} else if ( obj_type == SG_TEXCOORD_LIST ) {
|
||||
// read texcoord list properties
|
||||
for ( j = 0; j < nproperties; ++j ) {
|
||||
char prop_type;
|
||||
sgReadChar( fp, &prop_type );
|
||||
|
||||
int nbytes;
|
||||
sgReadInt( fp, &nbytes );
|
||||
cout << "property size = " << nbytes << endl;
|
||||
char buf[nbytes];
|
||||
char *ptr = buf;
|
||||
sgReadBytes( fp, nbytes, ptr );
|
||||
}
|
||||
|
||||
// read texcoord list elements
|
||||
for ( j = 0; j < nelements; ++j ) {
|
||||
int nbytes;
|
||||
sgReadInt( fp, &nbytes );
|
||||
cout << "element size = " << nbytes << endl;
|
||||
char buf[nbytes];
|
||||
char *ptr = buf;
|
||||
sgReadBytes( fp, nbytes, ptr );
|
||||
int count = nbytes / (sizeof(float) * 2);
|
||||
float *fptr = (float *)ptr;
|
||||
for ( k = 0; k < count; ++k ) {
|
||||
p = Point3D( fptr[0], fptr[1], 0 );
|
||||
cout << "texcoord = " << p << endl;
|
||||
texcoords.push_back( p );
|
||||
fptr += 2;
|
||||
}
|
||||
}
|
||||
} else if ( obj_type == SG_TRIANGLE_FACES ) {
|
||||
// read triangle face properties
|
||||
for ( j = 0; j < nproperties; ++j ) {
|
||||
char prop_type;
|
||||
sgReadChar( fp, &prop_type );
|
||||
|
||||
int nbytes;
|
||||
sgReadInt( fp, &nbytes );
|
||||
cout << "property size = " << nbytes << endl;
|
||||
char buf[nbytes];
|
||||
char *ptr = buf;
|
||||
sgReadBytes( fp, nbytes, ptr );
|
||||
if ( prop_type == SG_MATERIAL ) {
|
||||
char material[256];
|
||||
strncpy( material, ptr, nbytes );
|
||||
material[nbytes] = '\0';
|
||||
cout << "material type = " << material << endl;
|
||||
tri_materials.push_back( material );
|
||||
}
|
||||
}
|
||||
|
||||
// read triangle face elements
|
||||
for ( j = 0; j < nelements; ++j ) {
|
||||
int nbytes;
|
||||
sgReadInt( fp, &nbytes );
|
||||
cout << "element size = " << nbytes << endl;
|
||||
char buf[nbytes];
|
||||
char *ptr = buf;
|
||||
sgReadBytes( fp, nbytes, ptr );
|
||||
int count = nbytes / (sizeof(short) * 2 * 3);
|
||||
short *sptr = (short *)ptr;
|
||||
int_list vs, tcs;
|
||||
for ( k = 0; k < count; ++k ) {
|
||||
vs.clear(); tcs.clear();
|
||||
for ( m = 0; m < 3; ++m ) {
|
||||
vs.push_back( sptr[0] );
|
||||
tcs.push_back( sptr[1] );
|
||||
cout << sptr[0] << "/" << sptr[1] << " ";
|
||||
sptr += 2;
|
||||
}
|
||||
cout << endl;
|
||||
tris_v.push_back( vs );
|
||||
tris_tc.push_back( tcs );
|
||||
}
|
||||
}
|
||||
} else if ( obj_type == SG_TRIANGLE_STRIPS ) {
|
||||
// read triangle strip properties
|
||||
for ( j = 0; j < nproperties; ++j ) {
|
||||
char prop_type;
|
||||
sgReadChar( fp, &prop_type );
|
||||
|
||||
int nbytes;
|
||||
sgReadInt( fp, &nbytes );
|
||||
cout << "property size = " << nbytes << endl;
|
||||
char buf[nbytes];
|
||||
char *ptr = buf;
|
||||
sgReadBytes( fp, nbytes, ptr );
|
||||
if ( prop_type == SG_MATERIAL ) {
|
||||
char material[256];
|
||||
strncpy( material, ptr, nbytes );
|
||||
material[nbytes] = '\0';
|
||||
cout << "material type = " << material << endl;
|
||||
strip_materials.push_back( material );
|
||||
}
|
||||
}
|
||||
|
||||
// read triangle strip elements
|
||||
for ( j = 0; j < nelements; ++j ) {
|
||||
int nbytes;
|
||||
sgReadInt( fp, &nbytes );
|
||||
cout << "element size = " << nbytes << endl;
|
||||
char buf[nbytes];
|
||||
char *ptr = buf;
|
||||
sgReadBytes( fp, nbytes, ptr );
|
||||
int count = nbytes / (sizeof(short) * 2 * 3);
|
||||
short *sptr = (short *)ptr;
|
||||
int_list vs, tcs;
|
||||
vs.clear(); tcs.clear();
|
||||
for ( k = 0; k < count; ++k ) {
|
||||
vs.push_back( sptr[0] );
|
||||
tcs.push_back( sptr[1] );
|
||||
cout << sptr[0] << "/" << sptr[1] << " ";
|
||||
sptr += 2;
|
||||
}
|
||||
cout << endl;
|
||||
strips_v.push_back( vs );
|
||||
strips_tc.push_back( tcs );
|
||||
}
|
||||
} else if ( obj_type == SG_TRIANGLE_FANS ) {
|
||||
// read triangle fan properties
|
||||
for ( j = 0; j < nproperties; ++j ) {
|
||||
char prop_type;
|
||||
sgReadChar( fp, &prop_type );
|
||||
|
||||
int nbytes;
|
||||
sgReadInt( fp, &nbytes );
|
||||
cout << "property size = " << nbytes << endl;
|
||||
char buf[nbytes];
|
||||
char *ptr = buf;
|
||||
sgReadBytes( fp, nbytes, ptr );
|
||||
if ( prop_type == SG_MATERIAL ) {
|
||||
char material[256];
|
||||
strncpy( material, ptr, nbytes );
|
||||
material[nbytes] = '\0';
|
||||
cout << "material type = " << material << endl;
|
||||
fan_materials.push_back( material );
|
||||
}
|
||||
}
|
||||
|
||||
// read triangle fan elements
|
||||
for ( j = 0; j < nelements; ++j ) {
|
||||
int nbytes;
|
||||
sgReadInt( fp, &nbytes );
|
||||
cout << "element size = " << nbytes << endl;
|
||||
char buf[nbytes];
|
||||
char *ptr = buf;
|
||||
sgReadBytes( fp, nbytes, ptr );
|
||||
int count = nbytes / (sizeof(short) * 2 * 3);
|
||||
short *sptr = (short *)ptr;
|
||||
int_list vs, tcs;
|
||||
vs.clear(); tcs.clear();
|
||||
for ( k = 0; k < count; ++k ) {
|
||||
vs.push_back( sptr[0] );
|
||||
tcs.push_back( sptr[1] );
|
||||
cout << sptr[0] << "/" << sptr[1] << " ";
|
||||
sptr += 2;
|
||||
}
|
||||
cout << endl;
|
||||
fans_v.push_back( vs );
|
||||
fans_tc.push_back( tcs );
|
||||
}
|
||||
} else {
|
||||
// unknown object type, just skip
|
||||
|
||||
// read properties
|
||||
for ( j = 0; j < nproperties; ++j ) {
|
||||
char prop_type;
|
||||
sgReadChar( fp, &prop_type );
|
||||
|
||||
int nbytes;
|
||||
sgReadInt( fp, &nbytes );
|
||||
cout << "property size = " << nbytes << endl;
|
||||
char buf[nbytes];
|
||||
char *ptr = buf;
|
||||
sgReadBytes( fp, nbytes, ptr );
|
||||
}
|
||||
|
||||
// read elements
|
||||
for ( j = 0; j < nelements; ++j ) {
|
||||
int nbytes;
|
||||
sgReadInt( fp, &nbytes );
|
||||
cout << "element size = " << nbytes << endl;
|
||||
char buf[nbytes];
|
||||
char *ptr = buf;
|
||||
sgReadBytes( fp, nbytes, ptr );
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// close the file
|
||||
gzclose(fp);
|
||||
}
|
||||
|
||||
|
||||
// write out the structures to a binary file. We assume that the
|
||||
// groups come to us sorted by material property. If not, things
|
||||
// don't break, but the result won't be as optimal.
|
||||
void sgWriteBinObj( const string& base, const string& name, const SGBucket& b,
|
||||
Point3D gbs_center, float gbs_radius,
|
||||
const point_list& wgs84_nodes, const point_list& normals,
|
||||
const point_list& texcoords,
|
||||
const group_list& tris_v, const group_list& tris_tc,
|
||||
const string_list& tri_materials,
|
||||
const group_list& strips_v, const group_list& strips_tc,
|
||||
const string_list& strip_materials,
|
||||
const group_list& fans_v, const group_list& fans_tc,
|
||||
const string_list& fan_materials )
|
||||
{
|
||||
Point3D p;
|
||||
sgVec2 t;
|
||||
sgVec3 pt;
|
||||
int i, j;
|
||||
|
||||
string dir = base + "/" + b.gen_base_path();
|
||||
string command = "mkdir -p " + dir;
|
||||
#ifdef _MSC_VER
|
||||
fg_mkdir( dir.c_str() );
|
||||
#else
|
||||
system(command.c_str());
|
||||
#endif
|
||||
|
||||
string file = dir + "/" + name + ".gz";
|
||||
cout << "Output file = " << file << endl;
|
||||
|
||||
gzFile fp;
|
||||
if ( (fp = gzopen( file.c_str(), "wb9" )) == NULL ) {
|
||||
cout << "ERROR: opening " << file << " for writing!" << endl;
|
||||
exit(-1);
|
||||
}
|
||||
|
||||
cout << "triangles size = " << tris_v.size() << " tri_materials = "
|
||||
<< tri_materials.size() << endl;
|
||||
cout << "strips size = " << strips_v.size() << " strip_materials = "
|
||||
<< strip_materials.size() << endl;
|
||||
cout << "fans size = " << fans_v.size() << " fan_materials = "
|
||||
<< fan_materials.size() << endl;
|
||||
|
||||
cout << "points = " << wgs84_nodes.size() << endl;
|
||||
cout << "tex coords = " << texcoords.size() << endl;
|
||||
|
||||
// write header magic
|
||||
sgWriteInt( fp, SG_FILE_MAGIC_NUMBER );
|
||||
time_t calendar_time = time(NULL);
|
||||
sgWriteLong( fp, (long int)calendar_time );
|
||||
|
||||
// calculate and write number of top level objects
|
||||
string material;
|
||||
int start;
|
||||
int end;
|
||||
short nobjects = 0;
|
||||
nobjects++; // for gbs
|
||||
nobjects++; // for vertices
|
||||
nobjects++; // for normals
|
||||
nobjects++; // for texcoords
|
||||
|
||||
// tris
|
||||
short ntris = 0;
|
||||
start = 0; end = 1;
|
||||
while ( start < (int)tri_materials.size() ) {
|
||||
material = tri_materials[start];
|
||||
while ( (end < (int)tri_materials.size()) &&
|
||||
(material == tri_materials[end]) ) {
|
||||
end++;
|
||||
}
|
||||
ntris++;
|
||||
start = end; end = start + 1;
|
||||
}
|
||||
nobjects += ntris;
|
||||
|
||||
// strips
|
||||
short nstrips = 0;
|
||||
start = 0; end = 1;
|
||||
while ( start < (int)strip_materials.size() ) {
|
||||
material = strip_materials[start];
|
||||
while ( (end < (int)strip_materials.size()) &&
|
||||
(material == strip_materials[end]) ) {
|
||||
end++;
|
||||
}
|
||||
nstrips++;
|
||||
start = end; end = start + 1;
|
||||
}
|
||||
nobjects += nstrips;
|
||||
|
||||
// fans
|
||||
short nfans = 0;
|
||||
start = 0; end = 1;
|
||||
while ( start < (int)fan_materials.size() ) {
|
||||
material = fan_materials[start];
|
||||
while ( (end < (int)fan_materials.size()) &&
|
||||
(material == fan_materials[end]) ) {
|
||||
end++;
|
||||
}
|
||||
nfans++;
|
||||
start = end; end = start + 1;
|
||||
}
|
||||
nobjects += nfans;
|
||||
|
||||
cout << "total top level objects = " << nobjects << endl;
|
||||
sgWriteShort( fp, nobjects );
|
||||
|
||||
// write bounding sphere
|
||||
sgWriteChar( fp, (char)SG_BOUNDING_SPHERE ); // type
|
||||
sgWriteShort( fp, 0 ); // nproperties
|
||||
sgWriteShort( fp, 1 ); // nelements
|
||||
|
||||
sgWriteInt( fp, sizeof(double) * 3 + sizeof(float) ); // nbytes
|
||||
sgdVec3 center;
|
||||
sgdSetVec3( center, gbs_center.x(), gbs_center.y(), gbs_center.z() );
|
||||
sgWritedVec3( fp, center );
|
||||
sgWriteFloat( fp, gbs_radius );
|
||||
|
||||
// dump vertex list
|
||||
sgWriteChar( fp, (char)SG_VERTEX_LIST ); // type
|
||||
sgWriteShort( fp, 0 ); // nproperties
|
||||
sgWriteShort( fp, 1 ); // nelements
|
||||
sgWriteInt( fp, wgs84_nodes.size() * sizeof(float) * 3 ); // nbytes
|
||||
for ( i = 0; i < (int)wgs84_nodes.size(); ++i ) {
|
||||
p = wgs84_nodes[i] - gbs_center;
|
||||
sgSetVec3( pt, p.x(), p.y(), p.z() );
|
||||
sgWriteVec3( fp, pt );
|
||||
}
|
||||
|
||||
// dump vertex normal list
|
||||
sgWriteChar( fp, (char)SG_NORMAL_LIST ); // type
|
||||
sgWriteShort( fp, 0 ); // nproperties
|
||||
sgWriteShort( fp, 1 ); // nelements
|
||||
sgWriteInt( fp, normals.size() * 3 ); // nbytes
|
||||
char normal[3];
|
||||
for ( i = 0; i < (int)normals.size(); ++i ) {
|
||||
p = normals[i];
|
||||
normal[0] = (char)(p.x() * 256);
|
||||
normal[1] = (char)(p.y() * 256);
|
||||
normal[2] = (char)(p.z() * 256);
|
||||
sgWriteBytes( fp, 3, normal );
|
||||
}
|
||||
|
||||
// dump texture coordinates
|
||||
sgWriteChar( fp, (char)SG_TEXCOORD_LIST ); // type
|
||||
sgWriteShort( fp, 0 ); // nproperties
|
||||
sgWriteShort( fp, 1 ); // nelements
|
||||
sgWriteInt( fp, texcoords.size() * sizeof(float) * 2 ); // nbytes
|
||||
for ( i = 0; i < (int)texcoords.size(); ++i ) {
|
||||
p = texcoords[i];
|
||||
sgSetVec2( t, p.x(), p.y() );
|
||||
sgWriteVec2( fp, t );
|
||||
}
|
||||
|
||||
// dump individual triangles if they exist
|
||||
if ( tris_v.size() > 0 ) {
|
||||
int start = 0;
|
||||
int end = 1;
|
||||
string material;
|
||||
while ( start < (int)tri_materials.size() ) {
|
||||
// find next group
|
||||
material = tri_materials[start];
|
||||
while ( (end < (int)tri_materials.size()) &&
|
||||
(material == tri_materials[end]) )
|
||||
{
|
||||
// cout << "end = " << end << endl;
|
||||
end++;
|
||||
}
|
||||
// cout << "group = " << start << " to " << end - 1 << endl;
|
||||
|
||||
// write group headers
|
||||
sgWriteChar( fp, (char)SG_TRIANGLE_FACES ); // type
|
||||
sgWriteShort( fp, 1 ); // nproperties
|
||||
sgWriteShort( fp, 1 ); // nelements
|
||||
|
||||
sgWriteChar( fp, (char)SG_MATERIAL ); // property
|
||||
sgWriteInt( fp, material.length() ); // nbytes
|
||||
sgWriteBytes( fp, material.length(), material.c_str() );
|
||||
|
||||
sgWriteInt( fp, (end - start) * 3 * 2 * sizeof(short) ); // nbytes
|
||||
|
||||
// write group
|
||||
for ( i = start; i < end; ++i ) {
|
||||
for ( j = 0; j < 3; ++j ) {
|
||||
sgWriteShort( fp, (short)tris_v[i][j] );
|
||||
sgWriteShort( fp, (short)tris_tc[i][j] );
|
||||
}
|
||||
}
|
||||
|
||||
start = end;
|
||||
end = start + 1;
|
||||
}
|
||||
}
|
||||
|
||||
// dump triangle strips
|
||||
if ( strips_v.size() > 0 ) {
|
||||
int start = 0;
|
||||
int end = 1;
|
||||
string material;
|
||||
while ( start < (int)strip_materials.size() ) {
|
||||
// find next group
|
||||
material = strip_materials[start];
|
||||
while ( (end < (int)strip_materials.size()) &&
|
||||
(material == strip_materials[end]) )
|
||||
{
|
||||
// cout << "end = " << end << endl;
|
||||
end++;
|
||||
}
|
||||
// cout << "group = " << start << " to " << end - 1 << endl;
|
||||
|
||||
// write group headers
|
||||
sgWriteChar( fp, (char)SG_TRIANGLE_STRIPS ); // type
|
||||
sgWriteShort( fp, 1 ); // nproperties
|
||||
sgWriteShort( fp, end - start ); // nelements
|
||||
|
||||
sgWriteChar( fp, (char)SG_MATERIAL ); // property
|
||||
sgWriteInt( fp, material.length() ); // nbytes
|
||||
sgWriteBytes( fp, material.length(), material.c_str() );
|
||||
|
||||
// write strips
|
||||
for ( i = start; i < end; ++i ) {
|
||||
// nbytes
|
||||
sgWriteInt( fp, strips_v[i].size() * 2 * sizeof(short) );
|
||||
for ( j = 0; j < (int)strips_v[i].size(); ++j ) {
|
||||
sgWriteShort( fp, (short)strips_v[i][j] );
|
||||
sgWriteShort( fp, (short)strips_tc[i][j] );
|
||||
}
|
||||
}
|
||||
|
||||
start = end;
|
||||
end = start + 1;
|
||||
}
|
||||
}
|
||||
|
||||
// dump triangle fans
|
||||
if ( fans_v.size() > 0 ) {
|
||||
int start = 0;
|
||||
int end = 1;
|
||||
string material;
|
||||
while ( start < (int)fan_materials.size() ) {
|
||||
// find next group
|
||||
material = fan_materials[start];
|
||||
while ( (end < (int)fan_materials.size()) &&
|
||||
(material == fan_materials[end]) )
|
||||
{
|
||||
// cout << "end = " << end << endl;
|
||||
end++;
|
||||
}
|
||||
// cout << "group = " << start << " to " << end - 1 << endl;
|
||||
|
||||
// write group headers
|
||||
sgWriteChar( fp, (char)SG_TRIANGLE_FANS ); // type
|
||||
sgWriteShort( fp, 1 ); // nproperties
|
||||
sgWriteShort( fp, end - start ); // nelements
|
||||
|
||||
sgWriteChar( fp, (char)SG_MATERIAL ); // property
|
||||
sgWriteInt( fp, material.length() ); // nbytes
|
||||
sgWriteBytes( fp, material.length(), material.c_str() );
|
||||
|
||||
// write fans
|
||||
for ( i = start; i < end; ++i ) {
|
||||
// nbytes
|
||||
sgWriteInt( fp, fans_v[i].size() * 2 * sizeof(short) );
|
||||
for ( j = 0; j < (int)fans_v[i].size(); ++j ) {
|
||||
sgWriteShort( fp, (short)fans_v[i][j] );
|
||||
sgWriteShort( fp, (short)fans_tc[i][j] );
|
||||
}
|
||||
}
|
||||
|
||||
start = end;
|
||||
end = start + 1;
|
||||
}
|
||||
}
|
||||
|
||||
// close the file
|
||||
gzclose(fp);
|
||||
}
|
||||
121
simgear/io/sg_binobj.hxx
Normal file
121
simgear/io/sg_binobj.hxx
Normal file
@@ -0,0 +1,121 @@
|
||||
// sg_binobj.hxx -- routines to read and write low level flightgear 3d objects
|
||||
//
|
||||
// Written by Curtis Olson, started January 2000.
|
||||
//
|
||||
// Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
|
||||
//
|
||||
// This program is free software; you can redistribute it and/or modify
|
||||
// it under the terms of the GNU General Public License as published by
|
||||
// the Free Software Foundation; either version 2 of the License, or
|
||||
// (at your option) any later version.
|
||||
//
|
||||
// This program is distributed in the hope that it will be useful,
|
||||
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
// GNU General Public License for more details.
|
||||
//
|
||||
// You should have received a copy of the GNU General Public License
|
||||
// along with this program; if not, write to the Free Software
|
||||
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
//
|
||||
// $Id$
|
||||
//
|
||||
|
||||
|
||||
#ifndef _SG_BINOBJ_HXX
|
||||
#define _SG_BINOBJ_HXX
|
||||
|
||||
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include <config.h>
|
||||
#endif
|
||||
|
||||
#include <plib/sg.h>
|
||||
|
||||
#include <simgear/compiler.h>
|
||||
#include <simgear/constants.h>
|
||||
|
||||
#include <stdio.h>
|
||||
#include <time.h>
|
||||
|
||||
#include <list>
|
||||
#include STL_STRING
|
||||
|
||||
#include <simgear/math/sg_types.hxx>
|
||||
|
||||
|
||||
typedef vector < int_list > group_list;
|
||||
typedef group_list::iterator group_list_iterator;
|
||||
typedef group_list::const_iterator const_group_list_iterator;
|
||||
|
||||
|
||||
#define SG_FILE_MAGIC_NUMBER ( ('S'<<24) + ('G'<<16) + SG_BINOBJ_VERSION )
|
||||
|
||||
|
||||
/*
|
||||
scenery-file: magic, nobjects, object+
|
||||
magic: "TG" + version
|
||||
object: obj_typecode, nproperties, nelements, property+, element+
|
||||
element: nbytes, BYTE+
|
||||
property: prop_typecode, nbytes, BYTE+
|
||||
obj_typecode: bounding sphere | vertices | normals | texcoords | triangles |
|
||||
fans | strips
|
||||
prop_typecode: material_name | ???
|
||||
nelements: SHORT (Gives us 65536 which ought to be enough, right?)
|
||||
nproperties: SHORT
|
||||
*_typecode: CHAR
|
||||
nbytes: INTEGER (If we used short here that would mean 65536 bytes = 16384
|
||||
floats = 5461 vertices which is not enough for future
|
||||
growth)
|
||||
vertex: FLOAT, FLOAT, FLOAT
|
||||
*/
|
||||
|
||||
|
||||
// calculate the bounding sphere. Center is the center of the
|
||||
// tile and zero elevation
|
||||
double sgCalcBoundingRadius( Point3D center, point_list& wgs84_nodes );
|
||||
|
||||
|
||||
// write out the structures to an ASCII file. We assume that the
|
||||
// groups come to us sorted by material property. If not, things
|
||||
// don't break, but the result won't be as optimal.
|
||||
void sgWriteAsciiObj( const string& base, const string& name, const SGBucket& b,
|
||||
Point3D gbs_center, float gbs_radius,
|
||||
const point_list& wgs84_nodes, const point_list& normals,
|
||||
const point_list& texcoords,
|
||||
const group_list& tris_v, const group_list& tris_tc,
|
||||
const string_list& tri_materials,
|
||||
const group_list& strips_v, const group_list& strips_tc,
|
||||
const string_list& strip_materials,
|
||||
const group_list& fans_v, const group_list& fans_tc,
|
||||
const string_list& fan_materials );
|
||||
|
||||
|
||||
// read a binary file object and populate the provided structures.
|
||||
void sgReadBinObj( const string& file,
|
||||
Point3D &gbs_center, float *gbs_radius,
|
||||
point_list& wgs84_nodes, point_list& normals,
|
||||
point_list& texcoords,
|
||||
group_list& tris_v, group_list& tris_tc,
|
||||
string_list& tri_materials,
|
||||
group_list& strips_v, group_list& strips_tc,
|
||||
string_list& strip_materials,
|
||||
group_list& fans_v, group_list& fans_tc,
|
||||
string_list& fan_materials );
|
||||
|
||||
// write out the structures to a binary file. We assume that the
|
||||
// groups come to us sorted by material property. If not, things
|
||||
// don't break, but the result won't be as optimal.
|
||||
void sgWriteBinObj( const string& base, const string& name, const SGBucket& b,
|
||||
Point3D gbs_center, float gbs_radius,
|
||||
const point_list& wgs84_nodes, const point_list& normals,
|
||||
const point_list& texcoords,
|
||||
const group_list& tris_v, const group_list& tris_tc,
|
||||
const string_list& tri_materials,
|
||||
const group_list& strips_v, const group_list& strips_tc,
|
||||
const string_list& strip_materials,
|
||||
const group_list& fans_v, const group_list& fans_tc,
|
||||
const string_list& fan_materials );
|
||||
|
||||
|
||||
#endif // _SG_BINOBJ_HXX
|
||||
@@ -28,7 +28,7 @@ libsgmisc_a_SOURCES = \
|
||||
|
||||
noinst_PROGRAMS = props_test
|
||||
|
||||
props_test_SOURCES = props_test.cxx props_test.hxx
|
||||
props_test_SOURCES = props_test.cxx
|
||||
props_test_LDADD = libsgmisc.a ../xml/libsgxml.a ../debug/libsgdebug.a
|
||||
|
||||
INCLUDES += -I$(top_srcdir) $(ZLIB_INCL)
|
||||
|
||||
Reference in New Issue
Block a user