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Diffstat (limited to 'libs/assimp/code/AssetLib/Obj/ObjFileMtlImporter.cpp')
| -rw-r--r-- | libs/assimp/code/AssetLib/Obj/ObjFileMtlImporter.cpp | 497 |
1 files changed, 497 insertions, 0 deletions
diff --git a/libs/assimp/code/AssetLib/Obj/ObjFileMtlImporter.cpp b/libs/assimp/code/AssetLib/Obj/ObjFileMtlImporter.cpp new file mode 100644 index 0000000..2441c17 --- /dev/null +++ b/libs/assimp/code/AssetLib/Obj/ObjFileMtlImporter.cpp @@ -0,0 +1,497 @@ +/* +--------------------------------------------------------------------------- +Open Asset Import Library (assimp) +--------------------------------------------------------------------------- + +Copyright (c) 2006-2020, assimp team + +All rights reserved. + +Redistribution and use of this software in source and binary forms, +with or without modification, are permitted provided that the following +conditions are met: + +* Redistributions of source code must retain the above + copyright notice, this list of conditions and the + following disclaimer. + +* Redistributions in binary form must reproduce the above + copyright notice, this list of conditions and the + following disclaimer in the documentation and/or other + materials provided with the distribution. + +* Neither the name of the assimp team, nor the names of its + contributors may be used to endorse or promote products + derived from this software without specific prior + written permission of the assimp team. + +THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +--------------------------------------------------------------------------- +*/ + +#ifndef ASSIMP_BUILD_NO_OBJ_IMPORTER + +#include "ObjFileMtlImporter.h" +#include "ObjFileData.h" +#include "ObjTools.h" +#include <assimp/ParsingUtils.h> +#include <assimp/fast_atof.h> +#include <assimp/material.h> +#include <stdlib.h> +#include <assimp/DefaultLogger.hpp> + +namespace Assimp { + +// Material specific token (case insensitive compare) +static const std::string DiffuseTexture = "map_Kd"; +static const std::string AmbientTexture = "map_Ka"; +static const std::string SpecularTexture = "map_Ks"; +static const std::string OpacityTexture = "map_d"; +static const std::string EmissiveTexture1 = "map_emissive"; +static const std::string EmissiveTexture2 = "map_Ke"; +static const std::string BumpTexture1 = "map_bump"; +static const std::string BumpTexture2 = "bump"; +static const std::string NormalTextureV1 = "map_Kn"; +static const std::string NormalTextureV2 = "norm"; +static const std::string ReflectionTexture = "refl"; +static const std::string DisplacementTexture1 = "map_disp"; +static const std::string DisplacementTexture2 = "disp"; +static const std::string SpecularityTexture = "map_ns"; +static const std::string RoughnessTexture = "map_Pr"; +static const std::string MetallicTexture = "map_Pm"; +static const std::string SheenTexture = "map_Ps"; +static const std::string RMATexture = "map_Ps"; + +// texture option specific token +static const std::string BlendUOption = "-blendu"; +static const std::string BlendVOption = "-blendv"; +static const std::string BoostOption = "-boost"; +static const std::string ModifyMapOption = "-mm"; +static const std::string OffsetOption = "-o"; +static const std::string ScaleOption = "-s"; +static const std::string TurbulenceOption = "-t"; +static const std::string ResolutionOption = "-texres"; +static const std::string ClampOption = "-clamp"; +static const std::string BumpOption = "-bm"; +static const std::string ChannelOption = "-imfchan"; +static const std::string TypeOption = "-type"; + +// ------------------------------------------------------------------- +// Constructor +ObjFileMtlImporter::ObjFileMtlImporter(std::vector<char> &buffer, + const std::string &, + ObjFile::Model *pModel) : + m_DataIt(buffer.begin()), + m_DataItEnd(buffer.end()), + m_pModel(pModel), + m_uiLine(0), + m_buffer() { + ai_assert(nullptr != m_pModel); + m_buffer.resize(BUFFERSIZE); + std::fill(m_buffer.begin(), m_buffer.end(), '\0'); + if (nullptr == m_pModel->m_pDefaultMaterial) { + m_pModel->m_pDefaultMaterial = new ObjFile::Material; + m_pModel->m_pDefaultMaterial->MaterialName.Set("default"); + } + load(); +} + +// ------------------------------------------------------------------- +// Destructor +ObjFileMtlImporter::~ObjFileMtlImporter() { + // empty +} + +// ------------------------------------------------------------------- +// Loads the material description +void ObjFileMtlImporter::load() { + if (m_DataIt == m_DataItEnd) + return; + + while (m_DataIt != m_DataItEnd) { + switch (*m_DataIt) { + case 'k': + case 'K': { + ++m_DataIt; + if (*m_DataIt == 'a') // Ambient color + { + ++m_DataIt; + getColorRGBA(&m_pModel->m_pCurrentMaterial->ambient); + } else if (*m_DataIt == 'd') { + // Diffuse color + ++m_DataIt; + getColorRGBA(&m_pModel->m_pCurrentMaterial->diffuse); + } else if (*m_DataIt == 's') { + ++m_DataIt; + getColorRGBA(&m_pModel->m_pCurrentMaterial->specular); + } else if (*m_DataIt == 'e') { + ++m_DataIt; + getColorRGBA(&m_pModel->m_pCurrentMaterial->emissive); + } + m_DataIt = skipLine<DataArrayIt>(m_DataIt, m_DataItEnd, m_uiLine); + } break; + case 'T': { + ++m_DataIt; + // Material transmission color + if (*m_DataIt == 'f') { + ++m_DataIt; + getColorRGBA(&m_pModel->m_pCurrentMaterial->transparent); + } else if (*m_DataIt == 'r') { + // Material transmission alpha value + ++m_DataIt; + ai_real d; + getFloatValue(d); + m_pModel->m_pCurrentMaterial->alpha = static_cast<ai_real>(1.0) - d; + } + m_DataIt = skipLine<DataArrayIt>(m_DataIt, m_DataItEnd, m_uiLine); + } break; + case 'd': { + if (*(m_DataIt + 1) == 'i' && *(m_DataIt + 2) == 's' && *(m_DataIt + 3) == 'p') { + // A displacement map + getTexture(); + } else { + // Alpha value + ++m_DataIt; + getFloatValue(m_pModel->m_pCurrentMaterial->alpha); + m_DataIt = skipLine<DataArrayIt>(m_DataIt, m_DataItEnd, m_uiLine); + } + } break; + + case 'N': + case 'n': { + ++m_DataIt; + switch (*m_DataIt) { + case 's': // Specular exponent + ++m_DataIt; + getFloatValue(m_pModel->m_pCurrentMaterial->shineness); + break; + case 'i': // Index Of refraction + ++m_DataIt; + getFloatValue(m_pModel->m_pCurrentMaterial->ior); + break; + case 'e': // New material + createMaterial(); + break; + case 'o': // Norm texture + --m_DataIt; + getTexture(); + break; + } + m_DataIt = skipLine<DataArrayIt>(m_DataIt, m_DataItEnd, m_uiLine); + } break; + + case 'P': + { + ++m_DataIt; + switch(*m_DataIt) + { + case 'r': + ++m_DataIt; + getFloatValue(m_pModel->m_pCurrentMaterial->roughness); + break; + case 'm': + ++m_DataIt; + getFloatValue(m_pModel->m_pCurrentMaterial->metallic); + break; + case 's': + ++m_DataIt; + getColorRGBA(&m_pModel->m_pCurrentMaterial->sheen); + break; + case 'c': + ++m_DataIt; + if (*m_DataIt == 'r') { + ++m_DataIt; + getFloatValue(m_pModel->m_pCurrentMaterial->clearcoat_roughness); + } else { + getFloatValue(m_pModel->m_pCurrentMaterial->clearcoat_thickness); + } + break; + } + m_DataIt = skipLine<DataArrayIt>(m_DataIt, m_DataItEnd, m_uiLine); + } + break; + + case 'm': // Texture + case 'b': // quick'n'dirty - for 'bump' sections + case 'r': // quick'n'dirty - for 'refl' sections + { + getTexture(); + m_DataIt = skipLine<DataArrayIt>(m_DataIt, m_DataItEnd, m_uiLine); + } break; + + case 'i': // Illumination model + { + m_DataIt = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd); + getIlluminationModel(m_pModel->m_pCurrentMaterial->illumination_model); + m_DataIt = skipLine<DataArrayIt>(m_DataIt, m_DataItEnd, m_uiLine); + } break; + + case 'a': // Anisotropy + { + getFloatValue(m_pModel->m_pCurrentMaterial->anisotropy); + m_DataIt = skipLine<DataArrayIt>(m_DataIt, m_DataItEnd, m_uiLine); + } break; + + default: { + m_DataIt = skipLine<DataArrayIt>(m_DataIt, m_DataItEnd, m_uiLine); + } break; + } + } +} + +// ------------------------------------------------------------------- +// Loads a color definition +void ObjFileMtlImporter::getColorRGBA(aiColor3D *pColor) { + ai_assert(nullptr != pColor); + + ai_real r(0.0), g(0.0), b(0.0); + m_DataIt = getFloat<DataArrayIt>(m_DataIt, m_DataItEnd, r); + pColor->r = r; + + // we have to check if color is default 0 with only one token + if (!IsLineEnd(*m_DataIt)) { + m_DataIt = getFloat<DataArrayIt>(m_DataIt, m_DataItEnd, g); + m_DataIt = getFloat<DataArrayIt>(m_DataIt, m_DataItEnd, b); + } + pColor->g = g; + pColor->b = b; +} + +// ------------------------------------------------------------------- +// Loads the kind of illumination model. +void ObjFileMtlImporter::getIlluminationModel(int &illum_model) { + m_DataIt = CopyNextWord<DataArrayIt>(m_DataIt, m_DataItEnd, &m_buffer[0], BUFFERSIZE); + illum_model = atoi(&m_buffer[0]); +} + +// ------------------------------------------------------------------- +// Loads a single float value. +void ObjFileMtlImporter::getFloatValue(ai_real &value) { + m_DataIt = CopyNextWord<DataArrayIt>(m_DataIt, m_DataItEnd, &m_buffer[0], BUFFERSIZE); + size_t len = std::strlen(&m_buffer[0]); + if (0 == len) { + value = 0.0f; + return; + } + + value = (ai_real)fast_atof(&m_buffer[0]); +} + +// ------------------------------------------------------------------- +// Creates a material from loaded data. +void ObjFileMtlImporter::createMaterial() { + std::string line; + while (!IsLineEnd(*m_DataIt)) { + line += *m_DataIt; + ++m_DataIt; + } + + std::vector<std::string> token; + const unsigned int numToken = tokenize<std::string>(line, token, " \t"); + std::string name; + if (numToken == 1) { + name = AI_DEFAULT_MATERIAL_NAME; + } else { + // skip newmtl and all following white spaces + std::size_t first_ws_pos = line.find_first_of(" \t"); + std::size_t first_non_ws_pos = line.find_first_not_of(" \t", first_ws_pos); + if (first_non_ws_pos != std::string::npos) { + name = line.substr(first_non_ws_pos); + } + } + + name = trim_whitespaces(name); + + std::map<std::string, ObjFile::Material *>::iterator it = m_pModel->m_MaterialMap.find(name); + if (m_pModel->m_MaterialMap.end() == it) { + // New Material created + m_pModel->m_pCurrentMaterial = new ObjFile::Material(); + m_pModel->m_pCurrentMaterial->MaterialName.Set(name); + m_pModel->m_MaterialLib.push_back(name); + m_pModel->m_MaterialMap[name] = m_pModel->m_pCurrentMaterial; + + if (m_pModel->m_pCurrentMesh) { + m_pModel->m_pCurrentMesh->m_uiMaterialIndex = static_cast<unsigned int>(m_pModel->m_MaterialLib.size() - 1); + } + } else { + // Use older material + m_pModel->m_pCurrentMaterial = (*it).second; + } +} + +// ------------------------------------------------------------------- +// Gets a texture name from data. +void ObjFileMtlImporter::getTexture() { + aiString *out(nullptr); + int clampIndex = -1; + + const char *pPtr(&(*m_DataIt)); + if (!ASSIMP_strincmp(pPtr, DiffuseTexture.c_str(), static_cast<unsigned int>(DiffuseTexture.size()))) { + // Diffuse texture + out = &m_pModel->m_pCurrentMaterial->texture; + clampIndex = ObjFile::Material::TextureDiffuseType; + } else if (!ASSIMP_strincmp(pPtr, AmbientTexture.c_str(), static_cast<unsigned int>(AmbientTexture.size()))) { + // Ambient texture + out = &m_pModel->m_pCurrentMaterial->textureAmbient; + clampIndex = ObjFile::Material::TextureAmbientType; + } else if (!ASSIMP_strincmp(pPtr, SpecularTexture.c_str(), static_cast<unsigned int>(SpecularTexture.size()))) { + // Specular texture + out = &m_pModel->m_pCurrentMaterial->textureSpecular; + clampIndex = ObjFile::Material::TextureSpecularType; + } else if (!ASSIMP_strincmp(pPtr, DisplacementTexture1.c_str(), static_cast<unsigned int>(DisplacementTexture1.size())) || + !ASSIMP_strincmp(pPtr, DisplacementTexture2.c_str(), static_cast<unsigned int>(DisplacementTexture2.size()))) { + // Displacement texture + out = &m_pModel->m_pCurrentMaterial->textureDisp; + clampIndex = ObjFile::Material::TextureDispType; + } else if (!ASSIMP_strincmp(pPtr, OpacityTexture.c_str(), static_cast<unsigned int>(OpacityTexture.size()))) { + // Opacity texture + out = &m_pModel->m_pCurrentMaterial->textureOpacity; + clampIndex = ObjFile::Material::TextureOpacityType; + } else if (!ASSIMP_strincmp(pPtr, EmissiveTexture1.c_str(), static_cast<unsigned int>(EmissiveTexture1.size())) || + !ASSIMP_strincmp(pPtr, EmissiveTexture2.c_str(), static_cast<unsigned int>(EmissiveTexture2.size()))) { + // Emissive texture + out = &m_pModel->m_pCurrentMaterial->textureEmissive; + clampIndex = ObjFile::Material::TextureEmissiveType; + } else if (!ASSIMP_strincmp(pPtr, BumpTexture1.c_str(), static_cast<unsigned int>(BumpTexture1.size())) || + !ASSIMP_strincmp(pPtr, BumpTexture2.c_str(), static_cast<unsigned int>(BumpTexture2.size()))) { + // Bump texture + out = &m_pModel->m_pCurrentMaterial->textureBump; + clampIndex = ObjFile::Material::TextureBumpType; + } else if (!ASSIMP_strincmp(pPtr, NormalTextureV1.c_str(), static_cast<unsigned int>(NormalTextureV1.size())) || !ASSIMP_strincmp(pPtr, NormalTextureV2.c_str(), static_cast<unsigned int>(NormalTextureV2.size()))) { + // Normal map + out = &m_pModel->m_pCurrentMaterial->textureNormal; + clampIndex = ObjFile::Material::TextureNormalType; + } else if (!ASSIMP_strincmp(pPtr, ReflectionTexture.c_str(), static_cast<unsigned int>(ReflectionTexture.size()))) { + // Reflection texture(s) + //Do nothing here + return; + } else if (!ASSIMP_strincmp(pPtr, SpecularityTexture.c_str(), static_cast<unsigned int>(SpecularityTexture.size()))) { + // Specularity scaling (glossiness) + out = &m_pModel->m_pCurrentMaterial->textureSpecularity; + clampIndex = ObjFile::Material::TextureSpecularityType; + } else if ( !ASSIMP_strincmp( pPtr, RoughnessTexture.c_str(), static_cast<unsigned int>(RoughnessTexture.size()))) { + // PBR Roughness texture + out = & m_pModel->m_pCurrentMaterial->textureRoughness; + clampIndex = ObjFile::Material::TextureRoughnessType; + } else if ( !ASSIMP_strincmp( pPtr, MetallicTexture.c_str(), static_cast<unsigned int>(MetallicTexture.size()))) { + // PBR Metallic texture + out = & m_pModel->m_pCurrentMaterial->textureMetallic; + clampIndex = ObjFile::Material::TextureMetallicType; + } else if (!ASSIMP_strincmp( pPtr, SheenTexture.c_str(), static_cast<unsigned int>(SheenTexture.size()))) { + // PBR Sheen (reflectance) texture + out = & m_pModel->m_pCurrentMaterial->textureSheen; + clampIndex = ObjFile::Material::TextureSheenType; + } else if (!ASSIMP_strincmp( pPtr, RMATexture.c_str(), static_cast<unsigned int>(RMATexture.size()))) { + // PBR Rough/Metal/AO texture + out = & m_pModel->m_pCurrentMaterial->textureRMA; + clampIndex = ObjFile::Material::TextureRMAType; + } else { + ASSIMP_LOG_ERROR("OBJ/MTL: Encountered unknown texture type"); + return; + } + + bool clamp = false; + getTextureOption(clamp, clampIndex, out); + m_pModel->m_pCurrentMaterial->clamp[clampIndex] = clamp; + + std::string texture; + m_DataIt = getName<DataArrayIt>(m_DataIt, m_DataItEnd, texture); + if (nullptr != out) { + out->Set(texture); + } +} + +/* ///////////////////////////////////////////////////////////////////////////// + * Texture Option + * ///////////////////////////////////////////////////////////////////////////// + * According to http://en.wikipedia.org/wiki/Wavefront_.obj_file#Texture_options + * Texture map statement can contains various texture option, for example: + * + * map_Ka -o 1 1 1 some.png + * map_Kd -clamp on some.png + * + * So we need to parse and skip these options, and leave the last part which is + * the url of image, otherwise we will get a wrong url like "-clamp on some.png". + * + * Because aiMaterial supports clamp option, so we also want to return it + * ///////////////////////////////////////////////////////////////////////////// + */ +void ObjFileMtlImporter::getTextureOption(bool &clamp, int &clampIndex, aiString *&out) { + m_DataIt = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd); + + // If there is any more texture option + while (!isEndOfBuffer(m_DataIt, m_DataItEnd) && *m_DataIt == '-') { + const char *pPtr(&(*m_DataIt)); + //skip option key and value + int skipToken = 1; + + if (!ASSIMP_strincmp(pPtr, ClampOption.c_str(), static_cast<unsigned int>(ClampOption.size()))) { + DataArrayIt it = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd); + char value[3]; + CopyNextWord(it, m_DataItEnd, value, sizeof(value) / sizeof(*value)); + if (!ASSIMP_strincmp(value, "on", 2)) { + clamp = true; + } + + skipToken = 2; + } else if (!ASSIMP_strincmp(pPtr, TypeOption.c_str(), static_cast<unsigned int>(TypeOption.size()))) { + DataArrayIt it = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd); + char value[12]; + CopyNextWord(it, m_DataItEnd, value, sizeof(value) / sizeof(*value)); + if (!ASSIMP_strincmp(value, "cube_top", 8)) { + clampIndex = ObjFile::Material::TextureReflectionCubeTopType; + out = &m_pModel->m_pCurrentMaterial->textureReflection[0]; + } else if (!ASSIMP_strincmp(value, "cube_bottom", 11)) { + clampIndex = ObjFile::Material::TextureReflectionCubeBottomType; + out = &m_pModel->m_pCurrentMaterial->textureReflection[1]; + } else if (!ASSIMP_strincmp(value, "cube_front", 10)) { + clampIndex = ObjFile::Material::TextureReflectionCubeFrontType; + out = &m_pModel->m_pCurrentMaterial->textureReflection[2]; + } else if (!ASSIMP_strincmp(value, "cube_back", 9)) { + clampIndex = ObjFile::Material::TextureReflectionCubeBackType; + out = &m_pModel->m_pCurrentMaterial->textureReflection[3]; + } else if (!ASSIMP_strincmp(value, "cube_left", 9)) { + clampIndex = ObjFile::Material::TextureReflectionCubeLeftType; + out = &m_pModel->m_pCurrentMaterial->textureReflection[4]; + } else if (!ASSIMP_strincmp(value, "cube_right", 10)) { + clampIndex = ObjFile::Material::TextureReflectionCubeRightType; + out = &m_pModel->m_pCurrentMaterial->textureReflection[5]; + } else if (!ASSIMP_strincmp(value, "sphere", 6)) { + clampIndex = ObjFile::Material::TextureReflectionSphereType; + out = &m_pModel->m_pCurrentMaterial->textureReflection[0]; + } + + skipToken = 2; + } else if (!ASSIMP_strincmp(pPtr, BumpOption.c_str(), static_cast<unsigned int>(BumpOption.size()))) { + DataArrayIt it = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd); + getFloat(it, m_DataItEnd, m_pModel->m_pCurrentMaterial->bump_multiplier); + skipToken = 2; + } else if (!ASSIMP_strincmp(pPtr, BlendUOption.c_str(), static_cast<unsigned int>(BlendUOption.size())) || !ASSIMP_strincmp(pPtr, BlendVOption.c_str(), static_cast<unsigned int>(BlendVOption.size())) || !ASSIMP_strincmp(pPtr, BoostOption.c_str(), static_cast<unsigned int>(BoostOption.size())) || !ASSIMP_strincmp(pPtr, ResolutionOption.c_str(), static_cast<unsigned int>(ResolutionOption.size())) || !ASSIMP_strincmp(pPtr, ChannelOption.c_str(), static_cast<unsigned int>(ChannelOption.size()))) { + skipToken = 2; + } else if (!ASSIMP_strincmp(pPtr, ModifyMapOption.c_str(), static_cast<unsigned int>(ModifyMapOption.size()))) { + skipToken = 3; + } else if (!ASSIMP_strincmp(pPtr, OffsetOption.c_str(), static_cast<unsigned int>(OffsetOption.size())) || !ASSIMP_strincmp(pPtr, ScaleOption.c_str(), static_cast<unsigned int>(ScaleOption.size())) || !ASSIMP_strincmp(pPtr, TurbulenceOption.c_str(), static_cast<unsigned int>(TurbulenceOption.size()))) { + skipToken = 4; + } + + for (int i = 0; i < skipToken; ++i) { + m_DataIt = getNextToken<DataArrayIt>(m_DataIt, m_DataItEnd); + } + } +} + +// ------------------------------------------------------------------- + +} // Namespace Assimp + +#endif // !! ASSIMP_BUILD_NO_OBJ_IMPORTER |