Rename and move loaders, expose parsers
Former-commit-id: 932ae2aab020f956d3fdb91107f6842ff292aa08
This commit is contained in:
Lynix
333
src/Nazara/Utility/Formats/MTLParser.cpp
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333
src/Nazara/Utility/Formats/MTLParser.cpp
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// Copyright (C) 2015 Jérôme Leclercq
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// This file is part of the "Nazara Engine - Utility module"
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// For conditions of distribution and use, see copyright notice in Config.hpp
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#include <Nazara/Utility/Formats/MTLParser.hpp>
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#include <Nazara/Core/Error.hpp>
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#include <Nazara/Core/Log.hpp>
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#include <Nazara/Utility/Config.hpp>
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#include <cstdio>
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#include <memory>
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#include <Nazara/Utility/Debug.hpp>
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NzMTLParser::NzMTLParser(NzInputStream& stream) :
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m_stream(stream),
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m_streamFlags(stream.GetStreamOptions())
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{
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if ((m_streamFlags & nzStreamOption_Text) == 0)
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m_stream.SetStreamOptions(m_streamFlags | nzStreamOption_Text);
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}
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NzMTLParser::~NzMTLParser()
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{
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if ((m_streamFlags & nzStreamOption_Text) == 0)
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m_stream.SetStreamOptions(m_streamFlags);
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}
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const NzMTLParser::Material* NzMTLParser::GetMaterial(const NzString& materialName) const
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{
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auto it = m_materials.find(materialName);
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if (it != m_materials.end())
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return &it->second;
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else
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return nullptr;
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}
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const std::unordered_map<NzString, NzMTLParser::Material>& NzMTLParser::GetMaterials() const
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{
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return m_materials;
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}
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bool NzMTLParser::Parse()
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{
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m_keepLastLine = false;
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m_lineCount = 0;
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m_materials.clear();
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Material* currentMaterial = nullptr;
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while (Advance(false))
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{
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NzString keyword = m_currentLine.GetWord(0).ToLower();
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if (keyword == "ka")
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{
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float r, g, b;
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if (std::sscanf(&m_currentLine[3], "%f %f %f", &r, &g, &b) == 3)
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{
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if (!currentMaterial)
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currentMaterial = &m_materials["default"];
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currentMaterial->ambient = NzColor(static_cast<nzUInt8>(r*255.f), static_cast<nzUInt8>(g*255.f), static_cast<nzUInt8>(b*255.f));
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}
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#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
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else
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UnrecognizedLine();
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#endif
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}
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else if (keyword == "kd")
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{
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float r, g, b;
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if (std::sscanf(&m_currentLine[3], "%f %f %f", &r, &g, &b) == 3)
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{
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if (!currentMaterial)
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currentMaterial = &m_materials["default"];
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currentMaterial->diffuse = NzColor(static_cast<nzUInt8>(r*255.f), static_cast<nzUInt8>(g*255.f), static_cast<nzUInt8>(b*255.f));
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}
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#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
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else
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UnrecognizedLine();
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#endif
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}
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else if (keyword == "ks")
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{
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float r, g, b;
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if (std::sscanf(&m_currentLine[3], "%f %f %f", &r, &g, &b) == 3)
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{
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if (!currentMaterial)
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currentMaterial = &m_materials["default"];
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currentMaterial->specular = NzColor(static_cast<nzUInt8>(r*255.f), static_cast<nzUInt8>(g*255.f), static_cast<nzUInt8>(b*255.f));
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}
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#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
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else
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UnrecognizedLine();
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#endif
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}
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else if (keyword == "ni")
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{
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float density;
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if (std::sscanf(&m_currentLine[3], "%f", &density) == 1)
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{
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if (!currentMaterial)
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currentMaterial = &m_materials["default"];
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currentMaterial->refractionIndex = density;
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}
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#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
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else
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UnrecognizedLine();
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#endif
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}
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else if (keyword == "ns")
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{
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float coef;
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if (std::sscanf(&m_currentLine[3], "%f", &coef) == 1)
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{
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if (!currentMaterial)
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currentMaterial = &m_materials["default"];
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currentMaterial->shininess = coef;
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}
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#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
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else
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UnrecognizedLine();
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#endif
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}
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else if (keyword == 'd')
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{
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float alpha;
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if (std::sscanf(&m_currentLine[(keyword[0] == 'd') ? 2 : 3], "%f", &alpha) == 1)
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{
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if (!currentMaterial)
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currentMaterial = &m_materials["default"];
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currentMaterial->alpha = alpha;
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}
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#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
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else
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UnrecognizedLine();
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#endif
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}
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else if (keyword == "tr")
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{
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float alpha;
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if (std::sscanf(&m_currentLine[(keyword[0] == 'd') ? 2 : 3], "%f", &alpha) == 1)
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{
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if (!currentMaterial)
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currentMaterial = &m_materials["default"];
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currentMaterial->alpha = 1.f - alpha; // tr vaut pour la "valeur de transparence", 0 = opaque
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}
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#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
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else
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UnrecognizedLine();
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#endif
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}
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else if (keyword == "illum")
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{
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unsigned int model;
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if (std::sscanf(&m_currentLine[6], "%u", &model) == 1)
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{
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if (!currentMaterial)
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currentMaterial = &m_materials["default"];
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currentMaterial->illumModel = model;
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}
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#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
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else
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UnrecognizedLine();
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#endif
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}
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else if (keyword == "map_ka")
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{
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unsigned int mapPos = m_currentLine.GetWordPosition(1);
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if (mapPos != NzString::npos)
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{
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NzString map = m_currentLine.SubString(mapPos);
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if (!currentMaterial)
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currentMaterial = &m_materials["default"];
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currentMaterial->ambientMap = map;
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}
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}
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else if (keyword == "map_kd")
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{
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unsigned int mapPos = m_currentLine.GetWordPosition(1);
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if (mapPos != NzString::npos)
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{
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NzString map = m_currentLine.SubString(mapPos);
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if (!currentMaterial)
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currentMaterial = &m_materials["default"];
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currentMaterial->diffuseMap = map;
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}
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}
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else if (keyword == "map_ks")
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{
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unsigned int mapPos = m_currentLine.GetWordPosition(1);
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if (mapPos != NzString::npos)
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{
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NzString map = m_currentLine.SubString(mapPos);
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if (!currentMaterial)
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currentMaterial = &m_materials["default"];
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currentMaterial->specularMap = map;
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}
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}
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else if (keyword == "map_bump" || keyword == "bump")
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{
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unsigned int mapPos = m_currentLine.GetWordPosition(1);
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if (mapPos != NzString::npos)
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{
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NzString map = m_currentLine.SubString(mapPos);
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if (!currentMaterial)
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currentMaterial = &m_materials["default"];
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currentMaterial->bumpMap = map;
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}
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}
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else if (keyword == "map_d")
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{
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unsigned int mapPos = m_currentLine.GetWordPosition(1);
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if (mapPos != NzString::npos)
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{
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NzString map = m_currentLine.SubString(mapPos);
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if (!currentMaterial)
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currentMaterial = &m_materials["default"];
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currentMaterial->alphaMap = map;
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}
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}
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else if (keyword == "map_decal" || keyword == "decal")
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{
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unsigned int mapPos = m_currentLine.GetWordPosition(1);
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if (mapPos != NzString::npos)
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{
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NzString map = m_currentLine.SubString(mapPos);
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if (!currentMaterial)
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currentMaterial = &m_materials["default"];
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currentMaterial->decalMap = map;
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}
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}
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else if (keyword == "map_disp" || keyword == "disp")
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{
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unsigned int mapPos = m_currentLine.GetWordPosition(1);
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if (mapPos != NzString::npos)
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{
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NzString map = m_currentLine.SubString(mapPos);
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if (!currentMaterial)
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currentMaterial = &m_materials["default"];
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currentMaterial->displacementMap = map;
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}
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}
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else if (keyword == "map_refl" || keyword == "refl")
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{
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unsigned int mapPos = m_currentLine.GetWordPosition(1);
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if (mapPos != NzString::npos)
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{
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NzString map = m_currentLine.SubString(mapPos);
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if (!currentMaterial)
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currentMaterial = &m_materials["default"];
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currentMaterial->reflectionMap = map;
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}
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}
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else if (keyword == "newmtl")
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{
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NzString materialName = m_currentLine.SubString(m_currentLine.GetWordPosition(1));
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if (!materialName.IsEmpty())
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currentMaterial = &m_materials[materialName];
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#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
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else
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UnrecognizedLine();
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#endif
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}
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#if NAZARA_UTILITY_STRICT_RESOURCE_PARSING
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else
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UnrecognizedLine();
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#endif
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}
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return true;
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}
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bool NzMTLParser::Advance(bool required)
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{
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if (!m_keepLastLine)
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{
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do
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{
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if (m_stream.EndOfStream())
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{
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if (required)
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Error("Incomplete MTL file");
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return false;
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}
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m_lineCount++;
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m_currentLine = m_stream.ReadLine();
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m_currentLine = m_currentLine.SubStringTo("#"); // On ignore les commentaires
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m_currentLine.Simplify(); // Pour un traitement plus simple
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}
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while (m_currentLine.IsEmpty());
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}
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else
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m_keepLastLine = false;
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return true;
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}
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void NzMTLParser::Error(const NzString& message)
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{
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NazaraError(message + " at line #" + NzString::Number(m_lineCount));
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}
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void NzMTLParser::Warning(const NzString& message)
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{
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NazaraWarning(message + " at line #" + NzString::Number(m_lineCount));
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}
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void NzMTLParser::UnrecognizedLine(bool error)
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{
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NzString message = "Unrecognized \"" + m_currentLine + '"';
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if (error)
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Error(message);
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else
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Warning(message);
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}
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