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 SG_MATH_EXCEPTION_CLASH
39 #include <simgear/compiler.h>
40 #include <simgear/misc/exception.hxx>
45 #include <simgear/debug/logstream.hxx>
46 #include <simgear/misc/sg_path.hxx>
47 #include <simgear/misc/sgstream.hxx>
49 #include <Include/general.hxx>
50 #include <Main/globals.hxx>
51 #include <Main/fg_props.hxx>
52 #include <Scenery/tileentry.hxx>
57 SG_USING_NAMESPACE(std);
61 // global material management class
62 FGMaterialLib material_lib;
66 FGMaterialLib::FGMaterialLib ( void ) {
71 // Load a library of material properties
72 bool FGMaterialLib::load( const string& mpath ) {
74 SGPropertyNode materials;
76 SG_LOG(SG_INPUT, SG_INFO, "Reading materials from " << mpath);
78 readProperties(mpath, &materials);
79 } catch (const sg_exception &ex) {
80 SG_LOG(SG_INPUT, SG_ALERT, "Error reading materials: " << ex.getMessage());
84 int nMaterials = materials.nChildren();
85 for (int i = 0; i < nMaterials; i++) {
86 const SGPropertyNode * node = materials.getChild(i);
87 if (!strcmp(node->getName(), "material")) {
88 FGNewMat * m = new FGNewMat(node);
90 vector<SGPropertyNode_ptr>names = node->getChildren("name");
91 for (unsigned int j = 0; j < names.size(); j++) {
92 string name = names[j]->getStringValue();
94 // cerr << "Material " << name << endl;
96 SG_LOG( SG_TERRAIN, SG_INFO, " Loading material "
97 << names[j]->getStringValue());
100 SG_LOG(SG_INPUT, SG_ALERT,
101 "Skipping bad material entry " << node->getName());
105 // hard coded light state
106 ssgSimpleState *lights = new ssgSimpleState;
108 lights->disable( GL_TEXTURE_2D );
109 lights->enable( GL_CULL_FACE );
110 lights->enable( GL_COLOR_MATERIAL );
111 lights->setColourMaterial( GL_AMBIENT_AND_DIFFUSE );
112 lights->setMaterial( GL_EMISSION, 0, 0, 0, 1 );
113 lights->setMaterial( GL_SPECULAR, 0, 0, 0, 1 );
114 lights->enable( GL_BLEND );
115 lights->disable( GL_ALPHA_TEST );
116 lights->disable( GL_LIGHTING );
118 matlib["LIGHTS"] = new FGNewMat(lights);
124 // Load a library of material properties
125 bool FGMaterialLib::add_item ( const string &tex_path )
127 string material_name = tex_path;
128 int pos = tex_path.rfind( "/" );
129 material_name = material_name.substr( pos + 1 );
131 return add_item( material_name, tex_path );
135 // Load a library of material properties
136 bool FGMaterialLib::add_item ( const string &mat_name, const string &full_path )
138 int pos = full_path.rfind( "/" );
139 string tex_name = full_path.substr( pos + 1 );
140 string tex_path = full_path.substr( 0, pos );
142 SG_LOG( SG_TERRAIN, SG_INFO, " Loading material "
143 << mat_name << " (" << full_path << ")");
145 material_lib.matlib[mat_name] = new FGNewMat(full_path);
151 // Load a library of material properties
152 bool FGMaterialLib::add_item ( const string &mat_name, ssgSimpleState *state )
154 FGNewMat *m = new FGNewMat(state);
156 SG_LOG( SG_TERRAIN, SG_INFO, " Loading material given a premade "
157 << "ssgSimpleState = " << mat_name );
159 material_lib.matlib[mat_name] = m;
165 // find a material record by material name
166 FGNewMat *FGMaterialLib::find( const string& material ) {
167 FGNewMat *result = NULL;
168 material_map_iterator it = matlib.find( material );
179 FGMaterialLib::~FGMaterialLib ( void ) {
180 // Free up all the material entries first
181 for ( material_map_iterator it = begin(); it != end(); it++ ) {
182 FGNewMat *slot = it->second;
184 if ( slot->getRef() <= 0 ) {
191 // Set the step for all of the state selectors in the material slots
192 void FGMaterialLib::set_step ( int step )
194 // container::iterator it = begin();
195 for ( material_map_iterator it = begin(); it != end(); it++ ) {
196 const string &key = it->first;
197 SG_LOG( SG_GENERAL, SG_INFO,
198 "Updating material " << key << " to step " << step );
199 FGNewMat *slot = it->second;
200 slot->get_state()->selectStep(step);
205 // Get the step for the state selectors
206 int FGMaterialLib::get_step ()
208 material_map_iterator it = begin();
209 return it->second->get_state()->getSelectStep();
213 // Load one pending "deferred" texture. Return true if a texture
214 // loaded successfully, false if no pending, or error.
215 void FGMaterialLib::load_next_deferred() {
216 // container::iterator it = begin();
217 for ( material_map_iterator it = begin(); it != end(); it++ ) {
218 /* we don't need the key, but here's how we'd get it if we wanted it. */
219 // const string &key = it->first;
220 FGNewMat *slot = it->second;
221 if (slot->load_texture())