bool parseMaterial(XMLElement* node, MaterialMap& materials) {
const char* attr;
attr = node->Attribute("name");
if (!attr || strlen(attr) == 0) {
cerr << "WARNING: material tag is missing a name" << endl;
return false;
}
string name(attr);
auto material_iter = materials.find(name);
bool already_in_map = false;
if (material_iter != materials.end()) {
already_in_map = true;
}
Vector4d rgba;
XMLElement* color_node = node->FirstChildElement("color");
if (color_node) {
if (!parseVectorAttribute(color_node, "rgba", rgba)) {
cerr << "WARNING: color tag is missing rgba attribute" << endl;
return false;
}
materials[name] = rgba;
} else if (!already_in_map) {
cerr << "WARNING: material \"" << name
<< "\" is not a simple color material (so is currently unsupported)"
<< endl;
return false;
}
return true;
}
void Mesh::render(const MaterialMap &mats) const {
// index aktualni skupiny
size_t index = 0;
// pomocny seznam materialu pro predavani vertexgrupe pri renderu
MaterialMap localMats;
// iterace nad skupinami a jejich vykresleni
for (VGList::const_iterator pos = vg.begin(); pos != vg.end(); pos++, index++) {
// vyhodnoceni materialu
// pokud index v danem seznamu existuje, zapise se
MaterialMap::const_iterator matPos = mats.find(index);
if (matPos != mats.end()) {
localMats[0] = matPos->second;
} else {
localMats[0] = 0x0;
}
pos->render(localMats);
}
}
//------------------------------------------------------------------------
Mtl::MaterialIterator::MaterialIterator( const MaterialMap& _materialMap )
: IteratorWrapper<MaterialMap, MaterialMap::const_iterator, MaterialPtr>
( _materialMap.begin(), _materialMap.end() )
{
}