1 // materialmgr.cxx -- class to handle material properties
3 // Written by Curtis Olson, started May 1998.
5 // Copyright (C) 1998 Curtis L. Olson - curt@me.umn.edu
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 #ifdef FG_MATH_EXCEPTION_CLASH
37 #include <simgear/xgl/xgl.h>
39 #include <simgear/compiler.h>
44 #include <simgear/debug/logstream.hxx>
45 #include <simgear/misc/fgpath.hxx>
46 #include <simgear/misc/fgstream.hxx>
48 #include <Include/general.hxx>
49 #include <Main/globals.hxx>
50 #include <Scenery/tileentry.hxx>
57 // global material management class
58 FGMaterialLib material_lib;
62 FGMaterialLib::FGMaterialLib ( void ) {
66 static bool local_file_exists( const string& path ) {
67 fg_gzifstream in( path );
68 if ( ! in.is_open() ) {
76 FILE *fp = fopen( path.c_str(), "r" );
78 cout << " doesn't exist\n";
88 // Load a library of material properties
89 bool FGMaterialLib::load( const string& mpath ) {
92 fg_gzifstream in( mpath );
93 if ( ! in.is_open() ) {
94 FG_LOG( FG_GENERAL, FG_ALERT, "Cannot open file: " << mpath );
99 while ( ! in.eof() ) {
102 while ( in.get(c) && c != '\0' ) {
105 // printf("%s", line);
107 // strip leading white space and comments
110 // set to zero to prevent its value accidently being '{'
111 // after a failed >> operation.
116 if ( material_name == "alias" ) {
117 string src_mat, dst_mat;
118 in >> dst_mat >> src_mat;
119 FG_LOG( FG_GENERAL, FG_INFO, " Material alias: " << dst_mat <<
120 " mapped to " << src_mat );
121 FGNewMat m = matlib[src_mat];
126 if ( token == '{' ) {
130 // build the ssgSimpleState
131 FGPath tex_path( globals->get_options()->get_fg_root() );
132 tex_path.append( "Textures.high" );
134 FGPath tmp_path = tex_path;
135 tmp_path.append( m.get_texture_name() );
136 if ( ! local_file_exists(tmp_path.str())
137 || general.get_glMaxTexSize() < 512 ) {
138 tex_path = FGPath( globals->get_options()->get_fg_root() );
139 tex_path.append( "Textures" );
142 FG_LOG( FG_TERRAIN, FG_INFO, " Loading material "
143 << material_name << " (" << tex_path.c_str() << ")");
145 GLenum shade_model = GL_SMOOTH;
146 if ( globals->get_options()->get_shading() == 1 ) {
147 shade_model = GL_SMOOTH;
149 shade_model = GL_FLAT;
152 m.build_ssg_state( tex_path.str(), shade_model,
153 globals->get_options()->get_textures() );
159 matlib[material_name] = m;
168 // Load a library of material properties
169 bool FGMaterialLib::add_item ( const string &tex_path )
171 string material_name = tex_path;
172 int pos = tex_path.rfind( "/" );
173 material_name = material_name.substr( pos + 1 );
175 return add_item( material_name, tex_path );
179 // Load a library of material properties
180 bool FGMaterialLib::add_item ( const string &mat_name, const string &full_path )
182 int pos = full_path.rfind( "/" );
183 string tex_name = full_path.substr( pos + 1 );
184 string tex_path = full_path.substr( 0, pos );
186 FGNewMat m( mat_name, tex_name );
188 FG_LOG( FG_TERRAIN, FG_INFO, " Loading material "
189 << mat_name << " (" << tex_path << ")");
195 GLenum shade_model = GL_SMOOTH;
196 if ( globals->get_options()->get_shading() == 1 ) {
197 shade_model = GL_SMOOTH;
199 shade_model = GL_FLAT;
202 m.build_ssg_state( tex_path, shade_model,
203 globals->get_options()->get_textures() );
205 material_lib.matlib[mat_name] = m;
211 // Load a library of material properties
212 bool FGMaterialLib::add_item ( const string &mat_name, ssgSimpleState *state )
214 FGNewMat m( mat_name );
215 m.set_ssg_state( state );
217 FG_LOG( FG_TERRAIN, FG_INFO, " Loading material given a premade "
218 << "ssgSimpleState = " << mat_name );
224 material_lib.matlib[mat_name] = m;
230 // find a material record by material name
231 FGNewMat *FGMaterialLib::find( const string& material ) {
232 FGNewMat *result = NULL;
233 material_map_iterator it = matlib.find( material );
235 result = &((*it).second);
244 FGMaterialLib::~FGMaterialLib ( void ) {
248 // Set the step for all of the state selectors in the material slots
249 void FGMaterialLib::set_step ( int step )
251 // container::iterator it = begin();
252 for ( material_map_iterator it = begin(); it != end(); it++ ) {
253 const string &key = it->first;
254 FG_LOG( FG_GENERAL, FG_INFO,
255 "Updating material " << key << " to step " << step );
256 FGNewMat &slot = it->second;
257 slot.get_state()->selectStep(step);