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/options.hxx>
50 #include <Main/views.hxx>
51 #include <Scenery/tileentry.hxx>
58 // global material management class
59 FGMaterialLib material_lib;
63 FGMaterialLib::FGMaterialLib ( void ) {
67 static bool local_file_exists( const string& path ) {
68 fg_gzifstream in( path );
69 if ( ! in.is_open() ) {
77 FILE *fp = fopen( path.c_str(), "r" );
79 cout << " doesn't exist\n";
89 // Load a library of material properties
90 bool FGMaterialLib::load( const string& mpath ) {
93 fg_gzifstream in( mpath );
94 if ( ! in.is_open() ) {
95 FG_LOG( FG_GENERAL, FG_ALERT, "Cannot open file: " << mpath );
100 while ( ! in.eof() ) {
103 while ( in.get(c) && c != '\0' ) {
106 // printf("%s", line);
108 // strip leading white space and comments
111 // set to zero to prevent its value accidently being '{'
112 // after a failed >> operation.
115 in >> material_name >> token;
117 if ( token == '{' ) {
121 // build the ssgSimpleState
122 FGPath tex_path( current_options.get_fg_root() );
123 tex_path.append( "Textures.high" );
125 FGPath tmp_path = tex_path;
126 tmp_path.append( m.get_texture_name() );
127 if ( ! local_file_exists(tmp_path.str())
128 || general.get_glMaxTexSize() < 512 ) {
129 tex_path = FGPath( current_options.get_fg_root() );
130 tex_path.append( "Textures" );
133 FG_LOG( FG_TERRAIN, FG_INFO, " Loading material "
134 << material_name << " (" << tex_path.c_str() << ")");
136 GLenum shade_model = GL_SMOOTH;
137 if ( current_options.get_shading() == 1 ) {
138 shade_model = GL_SMOOTH;
140 shade_model = GL_FLAT;
143 m.build_ssg_state( tex_path.str(), shade_model,
144 current_options.get_textures() );
150 matlib[material_name] = m;
158 // Load a library of material properties
159 bool FGMaterialLib::add_item ( const string &tex_path )
161 string material_name = tex_path;
162 int pos = tex_path.rfind( "/" );
163 material_name = material_name.substr( pos + 1 );
165 return add_item( material_name, tex_path );
169 // Load a library of material properties
170 bool FGMaterialLib::add_item ( const string &mat_name, const string &full_path )
172 int pos = full_path.rfind( "/" );
173 string tex_name = full_path.substr( pos + 1 );
174 string tex_path = full_path.substr( 0, pos );
176 FGNewMat m( mat_name, tex_name );
178 FG_LOG( FG_TERRAIN, FG_INFO, " Loading material "
179 << mat_name << " (" << tex_path << ")");
185 GLenum shade_model = GL_SMOOTH;
186 if ( current_options.get_shading() == 1 ) {
187 shade_model = GL_SMOOTH;
189 shade_model = GL_FLAT;
192 m.build_ssg_state( tex_path, shade_model, current_options.get_textures() );
194 material_lib.matlib[mat_name] = m;
200 // Load a library of material properties
201 bool FGMaterialLib::add_item ( const string &mat_name, ssgSimpleState *state )
203 FGNewMat m( mat_name );
204 m.set_ssg_state( state );
206 FG_LOG( FG_TERRAIN, FG_INFO, " Loading material given a premade "
207 << "ssgSimpleState = " << mat_name );
213 material_lib.matlib[mat_name] = m;
219 // find a material record by material name
220 FGNewMat *FGMaterialLib::find( const string& material ) {
221 FGNewMat *result = NULL;
222 material_map_iterator it = matlib.find( material );
224 result = &((*it).second);
233 FGMaterialLib::~FGMaterialLib ( void ) {
237 // Set the step for all of the state selectors in the material slots
238 void FGMaterialLib::set_step ( int step )
240 // container::iterator it = begin();
241 for ( material_map_iterator it = begin(); it != end(); it++ ) {
242 const string &key = it->first;
243 FG_LOG( FG_GENERAL, FG_INFO,
244 "Updating material " << key << " to step " << step );
245 FGNewMat &slot = it->second;
246 slot.get_state()->selectStep(step);