--- /dev/null
+// lowlevel.hxx -- routines to handle lowlevel compressed binary IO of
+// various datatypes
+//
+// Shamelessly adapted from plib (plib.sourceforge.net) January 2001
+//
+// Original version Copyright (C) 2000 the plib team
+// Local changes Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
+//
+// This program is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program; if not, write to the Free Software
+// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//
+// $Id$
+//
+
+#include "lowlevel.hxx"
+
+static int read_error = false ;
+static int write_error = false ;
+
+int sgReadError (void) { return read_error ; }
+int sgWriteError (void) { return write_error ; }
+
+
+void sgReadChar ( gzFile fd, char *var )
+{
+ if ( gzread ( fd, var, sizeof(char) ) == 1 ) return ;
+ read_error = true ;
+}
+
+
+void sgWriteChar ( gzFile fd, const char var )
+{
+ if ( gzwrite ( fd, (void *)(&var), sizeof(char) ) == 1 ) return ;
+ write_error = true ;
+}
+
+
+void sgReadFloat ( gzFile fd, float *var )
+{
+ if ( gzread ( fd, var, sizeof(float) ) == 1 ) return ;
+ read_error = true ;
+}
+
+
+void sgWriteFloat ( gzFile fd, const float var )
+{
+ if ( gzwrite ( fd, (void *)(&var), sizeof(float) ) == 1 ) return ;
+ write_error = true ;
+}
+
+
+void sgReadDouble ( gzFile fd, double *var )
+{
+ if ( gzread ( fd, var, sizeof(double) ) == 1 ) return ;
+ read_error = true ;
+}
+
+
+void sgWriteDouble ( gzFile fd, const double var )
+{
+ if ( gzwrite ( fd, (void *)(&var), sizeof(double) ) == 1 ) return ;
+ write_error = true ;
+}
+
+
+void sgReadUInt ( gzFile fd, unsigned int *var )
+{
+ if ( gzread ( fd, var, sizeof(unsigned int) ) == 1 ) return ;
+ read_error = true ;
+}
+
+
+void sgWriteUInt ( gzFile fd, const unsigned int var )
+{
+ if ( gzwrite ( fd, (void *)(&var), sizeof(unsigned int) ) == 1 ) return ;
+ write_error = true ;
+}
+
+
+void sgReadInt ( gzFile fd, int *var )
+{
+ if ( gzread ( fd, var, sizeof(int) ) == 1 ) return ;
+ read_error = true ;
+}
+
+
+void sgWriteInt ( gzFile fd, const int var )
+{
+ if ( gzwrite ( fd, (void *)(&var), sizeof(int) ) == 1 ) return ;
+ write_error = true ;
+}
+
+
+void sgReadLong ( gzFile fd, long int *var )
+{
+ if ( gzread ( fd, var, sizeof(long int) ) == 1 ) return ;
+ read_error = true ;
+}
+
+
+void sgWriteLong ( gzFile fd, const long int var )
+{
+ if ( gzwrite ( fd, (void *)(&var), sizeof(long int) ) == 1 ) return ;
+ write_error = true ;
+}
+
+
+void sgReadUShort ( gzFile fd, unsigned short *var )
+{
+ if ( gzread ( fd, var, sizeof(unsigned short) ) == 1 ) return ;
+ read_error = true ;
+}
+
+
+void sgWriteUShort ( gzFile fd, const unsigned short var )
+{
+ if ( gzwrite ( fd, (void *)(&var), sizeof(unsigned short) ) == 1 ) return ;
+ write_error = true ;
+}
+
+
+void sgReadShort ( gzFile fd, short *var )
+{
+ if ( gzread ( fd, var, sizeof(short) ) == 1 ) return ;
+ read_error = true ;
+}
+
+
+void sgWriteShort ( gzFile fd, const short var )
+{
+ if ( gzwrite ( fd, (void *)(&var), sizeof(short) ) == 1 ) return ;
+ write_error = true ;
+}
+
+
+void sgReadFloat ( gzFile fd, const unsigned int n, float *var )
+{
+ if ( gzread ( fd, var, sizeof(float) * n ) == (int)n ) return ;
+ read_error = true ;
+}
+
+
+void sgWriteFloat ( gzFile fd, const unsigned int n, const float *var )
+{
+ if ( gzwrite ( fd, (void *)var, sizeof(float) * n ) == (int)n ) return ;
+ write_error = true ;
+}
+
+void sgReadDouble ( gzFile fd, const unsigned int n, double *var )
+{
+ if ( gzread ( fd, var, sizeof(double) * n ) == (int)n ) return ;
+ read_error = true ;
+}
+
+
+void sgWriteDouble ( gzFile fd, const unsigned int n, const double *var )
+{
+ if ( gzwrite ( fd, (void *)var, sizeof(double) * n ) == (int)n ) return ;
+ write_error = true ;
+}
+
+void sgReadBytes ( gzFile fd, const unsigned int n, void *var )
+{
+ if ( n == 0)
+ return;
+ if ( gzread ( fd, var, n ) == 1 )
+ return ;
+ read_error = true ;
+}
+
+void sgWriteBytes ( gzFile fd, const unsigned int n, const void *var )
+{
+ if ( n == 0)
+ return;
+ if ( gzwrite ( fd, (void *)var, n ) == 1 )
+ return ;
+ write_error = true ;
+}
+
+
+void sgReadUShort ( gzFile fd, const unsigned int n, unsigned short *var )
+{
+ if ( gzread ( fd, var, sizeof(unsigned short) * n ) == (int)n ) return ;
+ read_error = true ;
+}
+
+
+void sgWriteUShort ( gzFile fd, const unsigned int n, const unsigned short *var )
+{
+ if ( gzwrite ( fd, (void *)var, sizeof(unsigned short) * n ) == (int)n ) return ;
+ write_error = true ;
+}
+
+
+
+void sgReadShort ( gzFile fd, const unsigned int n, short *var )
+{
+ if ( gzread ( fd, var, sizeof(short) * n ) == (int)n ) return ;
+ read_error = true ;
+}
+
+
+void sgWriteShort ( gzFile fd, const unsigned int n, const short *var )
+{
+ if ( gzwrite ( fd, (void *)var, sizeof(short) * n ) == (int)n ) return ;
+ write_error = true ;
+}
+
+
+void sgReadUInt ( gzFile fd, const unsigned int n, unsigned int *var )
+{
+ if ( gzread ( fd, var, sizeof(unsigned int)* n ) == (int)n ) return ;
+ read_error = true ;
+}
+
+
+void sgWriteUInt ( gzFile fd, const unsigned int n, const unsigned int *var )
+{
+ if ( gzwrite ( fd, (void *)var, sizeof(unsigned int) * n ) == (int)n ) return ;
+ write_error = true ;
+}
+
+
+
+void sgReadInt ( gzFile fd, const unsigned int n, int *var )
+{
+ if ( gzread ( fd, var, sizeof(int) * n ) == (int)n ) return ;
+ read_error = true ;
+}
+
+
+void sgWriteInt ( gzFile fd, const unsigned int n, const int *var )
+{
+ if ( gzwrite ( fd, (void *)var, sizeof(int) * n ) == (int)n ) return ;
+ write_error = true ;
+}
+
+
+
+#define MAX_ENTITY_NAME_LENGTH 1024
+
+void sgReadString ( gzFile fd, char **var )
+{
+ int i ;
+ char s [ MAX_ENTITY_NAME_LENGTH ] ;
+
+ for ( i = 0 ; i < MAX_ENTITY_NAME_LENGTH ; i++ )
+ {
+ int c = gzgetc ( fd ) ;
+ s [ i ] = c ;
+
+ if ( c == '\0' )
+ break ;
+ }
+
+ if ( i >= MAX_ENTITY_NAME_LENGTH-1 )
+ s [ MAX_ENTITY_NAME_LENGTH-1 ] = '\0' ;
+
+
+ if ( s[0] == '\0' )
+ *var = NULL ;
+ else
+ {
+ *var = new char [ strlen(s)+1 ] ;
+ strcpy ( *var, s ) ;
+ }
+}
+
+
+void sgWriteString ( gzFile fd, const char *var )
+{
+ if ( var != NULL ) {
+ if ( gzwrite ( fd, (void *)var, strlen(var) + 1 ) ==
+ (int)(strlen(var) + 1) )
+ return ;
+ } else {
+ gzputc( fd, 0 );
+ }
+}
+
+
+void sgReadVec2 ( gzFile fd, sgVec2 var ) { sgReadFloat ( fd, 2, var ) ; }
+void sgWriteVec2 ( gzFile fd, const sgVec2 var ) { sgWriteFloat ( fd, 2, var ) ; }
+
+void sgReadVec3 ( gzFile fd, sgVec3 var ) { sgReadFloat ( fd, 3, var ) ; }
+void sgWriteVec3 ( gzFile fd, const sgVec3 var ) { sgWriteFloat ( fd, 3, var ) ; }
+
+void sgReaddVec3 ( gzFile fd, sgdVec3 var ) { sgReadDouble ( fd, 3, var ) ; }
+void sgWritedVec3 ( gzFile fd, const sgdVec3 var ) { sgWriteDouble ( fd, 3, var ) ; }
+
+void sgReadVec4 ( gzFile fd, sgVec4 var ) { sgReadFloat ( fd, 4, var ) ; }
+void sgWriteVec4 ( gzFile fd, const sgVec4 var ) { sgWriteFloat ( fd, 4, var ) ; }
+
+void sgReadMat4 ( gzFile fd, sgMat4 var ) { sgReadFloat ( fd, 16, (float *)var ) ; }
+void sgWriteMat4 ( gzFile fd, const sgMat4 var ) { sgWriteFloat ( fd, 16, (float *)var ) ; }
--- /dev/null
+// 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);
+}
projects / simgear.git / commitdiff