bool MTLParser::Save(Stream& stream) const
{
m_currentStream = &stream;
// Force stream in text mode, reset it at the end
Nz::CallOnExit resetTextMode;
if ((stream.GetStreamOptions() & StreamOption_Text) == 0)
{
stream.EnableTextMode(true);
resetTextMode.Reset([&stream] ()
{
stream.EnableTextMode(false);
});
}
m_outputStream.Clear();
EmitLine("# Exported by Nazara Engine");
EmitLine();
Emit("# material count: ");
Emit(m_materials.size());
EmitLine();
for (auto& pair : m_materials)
{
const String& matName = pair.first;
const Material& mat = pair.second;
Emit("newmtl ");
EmitLine(matName);
EmitLine();
Emit("Ka ");
Emit(mat.ambient.r / 255.f);
Emit(' ');
Emit(mat.ambient.g / 255.f);
Emit(' ');
Emit(mat.ambient.b / 255.f);
EmitLine();
Emit("Kd ");
Emit(mat.diffuse.r / 255.f);
Emit(' ');
Emit(mat.diffuse.g / 255.f);
Emit(' ');
Emit(mat.diffuse.b / 255.f);
EmitLine();
Emit("Ks ");
Emit(mat.specular.r / 255.f);
Emit(' ');
Emit(mat.specular.g / 255.f);
Emit(' ');
Emit(mat.specular.b / 255.f);
EmitLine();
if (!NumberEquals(mat.alpha, 1.f))
{
Emit("d ");
EmitLine(mat.alpha);
}
if (!NumberEquals(mat.refractionIndex, 1.f))
{
Emit("ni ");
EmitLine(mat.refractionIndex);
}
if (!NumberEquals(mat.shininess, 1.f))
{
Emit("ns ");
EmitLine(mat.shininess);
}
if (mat.illumModel != 0)
{
Emit("illum ");
EmitLine(mat.illumModel);
}
if (!mat.ambientMap.IsEmpty())
{
Emit("map_Ka ");
EmitLine(mat.ambientMap);
}
if (!mat.diffuseMap.IsEmpty())
{
Emit("map_Kd ");
EmitLine(mat.diffuseMap);
}
if (!mat.specularMap.IsEmpty())
{
Emit("map_Ks ");
EmitLine(mat.specularMap);
}
if (!mat.bumpMap.IsEmpty())
{
Emit("map_bump ");
EmitLine(mat.bumpMap);
}
if (!mat.alphaMap.IsEmpty())
{
Emit("map_d ");
EmitLine(mat.alphaMap);
}
if (!mat.decalMap.IsEmpty())
{
Emit("map_decal ");
EmitLine(mat.decalMap);
}
if (!mat.displacementMap.IsEmpty())
{
Emit("map_disp ");
EmitLine(mat.displacementMap);
}
if (!mat.reflectionMap.IsEmpty())
{
Emit("map_refl ");
EmitLine(mat.reflectionMap);
}
EmitLine();
}
Flush();
return true;
}
bool MTLParser::Parse(Stream& stream)
{
m_currentStream = &stream;
// Force stream in text mode, reset it at the end
Nz::CallOnExit resetTextMode;
if ((stream.GetStreamOptions() & StreamOption_Text) == 0)
{
stream.EnableTextMode(true);
resetTextMode.Reset([&stream] ()
{
stream.EnableTextMode(false);
});
}
m_keepLastLine = false;
m_lineCount = 0;
m_materials.clear();
Material* currentMaterial = nullptr;
while (Advance(false))
{
String keyword = m_currentLine.GetWord(0).ToLower();
if (keyword == "ka")
{
float r, g, b;
if (std::sscanf(&m_currentLine[3], "%f %f %f", &r, &g, &b) == 3)
{
if (!currentMaterial)
currentMaterial = AddMaterial("default");
currentMaterial->ambient = Color(static_cast<UInt8>(r*255.f), static_cast<UInt8>(g*255.f), static_cast<UInt8>(b*255.f));
}
#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
else
UnrecognizedLine();
#endif
}
else if (keyword == "kd")
{
float r, g, b;
if (std::sscanf(&m_currentLine[3], "%f %f %f", &r, &g, &b) == 3)
{
if (!currentMaterial)
currentMaterial = AddMaterial("default");
currentMaterial->diffuse = Color(static_cast<UInt8>(r*255.f), static_cast<UInt8>(g*255.f), static_cast<UInt8>(b*255.f));
}
#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
else
UnrecognizedLine();
#endif
}
else if (keyword == "ks")
{
float r, g, b;
if (std::sscanf(&m_currentLine[3], "%f %f %f", &r, &g, &b) == 3)
{
if (!currentMaterial)
currentMaterial = AddMaterial("default");
currentMaterial->specular = Color(static_cast<UInt8>(r*255.f), static_cast<UInt8>(g*255.f), static_cast<UInt8>(b*255.f));
}
#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
else
UnrecognizedLine();
#endif
}
else if (keyword == "ni")
{
float density;
if (std::sscanf(&m_currentLine[3], "%f", &density) == 1)
{
if (!currentMaterial)
currentMaterial = AddMaterial("default");
currentMaterial->refractionIndex = density;
}
#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
else
UnrecognizedLine();
#endif
}
else if (keyword == "ns")
{
float coef;
if (std::sscanf(&m_currentLine[3], "%f", &coef) == 1)
{
if (!currentMaterial)
currentMaterial = AddMaterial("default");
currentMaterial->shininess = coef;
}
#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
else
UnrecognizedLine();
#endif
}
else if (keyword == 'd')
{
float alpha;
if (std::sscanf(&m_currentLine[(keyword[0] == 'd') ? 2 : 3], "%f", &alpha) == 1)
{
if (!currentMaterial)
currentMaterial = AddMaterial("default");
currentMaterial->alpha = alpha;
}
#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
else
UnrecognizedLine();
#endif
}
else if (keyword == "tr")
{
float alpha;
if (std::sscanf(&m_currentLine[(keyword[0] == 'd') ? 2 : 3], "%f", &alpha) == 1)
{
if (!currentMaterial)
currentMaterial = AddMaterial("default");
currentMaterial->alpha = 1.f - alpha; // tr vaut pour la "valeur de transparence", 0 = opaque
}
#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
else
UnrecognizedLine();
#endif
}
else if (keyword == "illum")
{
unsigned int model;
if (std::sscanf(&m_currentLine[6], "%u", &model) == 1)
{
if (!currentMaterial)
currentMaterial = AddMaterial("default");
currentMaterial->illumModel = model;
}
#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
else
UnrecognizedLine();
#endif
}
else if (keyword == "map_ka")
{
std::size_t mapPos = m_currentLine.GetWordPosition(1);
if (mapPos != String::npos)
{
String map = m_currentLine.SubString(mapPos);
if (!currentMaterial)
currentMaterial = AddMaterial("default");
currentMaterial->ambientMap = map;
}
}
else if (keyword == "map_kd")
{
std::size_t mapPos = m_currentLine.GetWordPosition(1);
if (mapPos != String::npos)
{
String map = m_currentLine.SubString(mapPos);
if (!currentMaterial)
currentMaterial = AddMaterial("default");
currentMaterial->diffuseMap = map;
}
}
else if (keyword == "map_ks")
{
std::size_t mapPos = m_currentLine.GetWordPosition(1);
if (mapPos != String::npos)
{
String map = m_currentLine.SubString(mapPos);
if (!currentMaterial)
currentMaterial = AddMaterial("default");
currentMaterial->specularMap = map;
}
}
else if (keyword == "map_bump" || keyword == "bump")
{
std::size_t mapPos = m_currentLine.GetWordPosition(1);
if (mapPos != String::npos)
{
String map = m_currentLine.SubString(mapPos);
if (!currentMaterial)
currentMaterial = AddMaterial("default");
currentMaterial->bumpMap = map;
}
}
else if (keyword == "map_d")
{
std::size_t mapPos = m_currentLine.GetWordPosition(1);
if (mapPos != String::npos)
{
String map = m_currentLine.SubString(mapPos);
if (!currentMaterial)
currentMaterial = AddMaterial("default");
currentMaterial->alphaMap = map;
}
}
else if (keyword == "map_decal" || keyword == "decal")
{
std::size_t mapPos = m_currentLine.GetWordPosition(1);
if (mapPos != String::npos)
{
String map = m_currentLine.SubString(mapPos);
if (!currentMaterial)
currentMaterial = AddMaterial("default");
currentMaterial->decalMap = map;
}
}
else if (keyword == "map_disp" || keyword == "disp")
{
std::size_t mapPos = m_currentLine.GetWordPosition(1);
if (mapPos != String::npos)
{
String map = m_currentLine.SubString(mapPos);
if (!currentMaterial)
currentMaterial = AddMaterial("default");
currentMaterial->displacementMap = map;
}
}
else if (keyword == "map_refl" || keyword == "refl")
{
std::size_t mapPos = m_currentLine.GetWordPosition(1);
if (mapPos != String::npos)
{
String map = m_currentLine.SubString(mapPos);
if (!currentMaterial)
currentMaterial = AddMaterial("default");
currentMaterial->reflectionMap = map;
}
}
else if (keyword == "newmtl")
{
String materialName = m_currentLine.SubString(m_currentLine.GetWordPosition(1));
if (!materialName.IsEmpty())
currentMaterial = AddMaterial(materialName);
#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
else
UnrecognizedLine();
#endif
}
#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
else
UnrecognizedLine();
#endif
}
return true;
}