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Diffstat (limited to 'libs/assimp/code/AssetLib/IFC/IFCMaterial.cpp')
| -rw-r--r-- | libs/assimp/code/AssetLib/IFC/IFCMaterial.cpp | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/libs/assimp/code/AssetLib/IFC/IFCMaterial.cpp b/libs/assimp/code/AssetLib/IFC/IFCMaterial.cpp new file mode 100644 index 0000000..6cd0e59 --- /dev/null +++ b/libs/assimp/code/AssetLib/IFC/IFCMaterial.cpp @@ -0,0 +1,202 @@ +/* +Open Asset Import Library (assimp) +---------------------------------------------------------------------- + +Copyright (c) 2006-2022, 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. + +---------------------------------------------------------------------- +*/ + +/** @file IFCMaterial.cpp + * @brief Implementation of conversion routines to convert IFC materials to aiMaterial + */ + +#ifndef ASSIMP_BUILD_NO_IFC_IMPORTER + +#include "IFCUtil.h" +#include <limits> +#include <assimp/material.h> + +namespace Assimp { +namespace IFC { + +// ------------------------------------------------------------------------------------------------ +static int ConvertShadingMode(const std::string& name) { + if (name == "BLINN") { + return aiShadingMode_Blinn; + } + else if (name == "FLAT" || name == "NOTDEFINED") { + return aiShadingMode_NoShading; + } + else if (name == "PHONG") { + return aiShadingMode_Phong; + } + IFCImporter::LogWarn("shading mode ", name, " not recognized by Assimp, using Phong instead"); + return aiShadingMode_Phong; +} + +// ------------------------------------------------------------------------------------------------ +static void FillMaterial(aiMaterial* mat,const IFC::Schema_2x3::IfcSurfaceStyle* surf,ConversionData& conv) { + aiString name; + name.Set((surf->Name? surf->Name.Get() : "IfcSurfaceStyle_Unnamed")); + mat->AddProperty(&name,AI_MATKEY_NAME); + + // now see which kinds of surface information are present + for (const std::shared_ptr<const IFC::Schema_2x3::IfcSurfaceStyleElementSelect> &sel2 : surf->Styles) { + if (const IFC::Schema_2x3::IfcSurfaceStyleShading* shade = sel2->ResolveSelectPtr<IFC::Schema_2x3::IfcSurfaceStyleShading>(conv.db)) { + aiColor4D col_base,col; + + ConvertColor(col_base, shade->SurfaceColour); + mat->AddProperty(&col_base,1, AI_MATKEY_COLOR_DIFFUSE); + + if (const IFC::Schema_2x3::IfcSurfaceStyleRendering* ren = shade->ToPtr<IFC::Schema_2x3::IfcSurfaceStyleRendering>()) { + + if (ren->Transparency) { + const float t = 1.f-static_cast<float>(ren->Transparency.Get()); + mat->AddProperty(&t,1, AI_MATKEY_OPACITY); + } + + if (ren->DiffuseColour) { + ConvertColor(col, *ren->DiffuseColour.Get(),conv,&col_base); + mat->AddProperty(&col,1, AI_MATKEY_COLOR_DIFFUSE); + } + + if (ren->SpecularColour) { + ConvertColor(col, *ren->SpecularColour.Get(),conv,&col_base); + mat->AddProperty(&col,1, AI_MATKEY_COLOR_SPECULAR); + } + + if (ren->TransmissionColour) { + ConvertColor(col, *ren->TransmissionColour.Get(),conv,&col_base); + mat->AddProperty(&col,1, AI_MATKEY_COLOR_TRANSPARENT); + } + + if (ren->ReflectionColour) { + ConvertColor(col, *ren->ReflectionColour.Get(),conv,&col_base); + mat->AddProperty(&col,1, AI_MATKEY_COLOR_REFLECTIVE); + } + + const int shading = (ren->SpecularHighlight && ren->SpecularColour)?ConvertShadingMode(ren->ReflectanceMethod):static_cast<int>(aiShadingMode_Gouraud); + mat->AddProperty(&shading,1, AI_MATKEY_SHADING_MODEL); + + if (ren->SpecularHighlight) { + if(const ::Assimp::STEP::EXPRESS::REAL* rt = ren->SpecularHighlight.Get()->ToPtr<::Assimp::STEP::EXPRESS::REAL>()) { + // at this point we don't distinguish between the two distinct ways of + // specifying highlight intensities. leave this to the user. + const float e = static_cast<float>(*rt); + mat->AddProperty(&e,1,AI_MATKEY_SHININESS); + } + else { + IFCImporter::LogWarn("unexpected type error, SpecularHighlight should be a REAL"); + } + } + } + } + } +} + +// ------------------------------------------------------------------------------------------------ +unsigned int ProcessMaterials(uint64_t id, unsigned int prevMatId, ConversionData& conv, bool forceDefaultMat) { + STEP::DB::RefMapRange range = conv.db.GetRefs().equal_range(id); + for(;range.first != range.second; ++range.first) { + if(const IFC::Schema_2x3::IfcStyledItem* const styled = conv.db.GetObject((*range.first).second)->ToPtr<IFC::Schema_2x3::IfcStyledItem>()) { + for(const IFC::Schema_2x3::IfcPresentationStyleAssignment& as : styled->Styles) { + for (const std::shared_ptr<const IFC::Schema_2x3::IfcPresentationStyleSelect> &sel : as.Styles) { + + if( const IFC::Schema_2x3::IfcSurfaceStyle* const surf = sel->ResolveSelectPtr<IFC::Schema_2x3::IfcSurfaceStyle>(conv.db) ) { + // try to satisfy from cache + ConversionData::MaterialCache::iterator mit = conv.cached_materials.find(surf); + if( mit != conv.cached_materials.end() ) + return mit->second; + + // not found, create new material + const std::string side = static_cast<std::string>(surf->Side); + if( side != "BOTH" ) { + IFCImporter::LogWarn("ignoring surface side marker on IFC::IfcSurfaceStyle: ", side); + } + + std::unique_ptr<aiMaterial> mat(new aiMaterial()); + + FillMaterial(mat.get(), surf, conv); + + conv.materials.push_back(mat.release()); + unsigned int matindex = static_cast<unsigned int>(conv.materials.size() - 1); + conv.cached_materials[surf] = matindex; + return matindex; + } + } + } + } + } + + // no local material defined. If there's global one, use that instead + if ( prevMatId != std::numeric_limits<uint32_t>::max() ) { + return prevMatId; + } + + // we're still here - create an default material if required, or simply fail otherwise + if ( !forceDefaultMat ) { + return std::numeric_limits<uint32_t>::max(); + } + + aiString name; + name.Set("<IFCDefault>"); + // ConvertColorToString( color, name); + + // look if there's already a default material with this base color + for( size_t a = 0; a < conv.materials.size(); ++a ) { + aiString mname; + conv.materials[a]->Get(AI_MATKEY_NAME, mname); + if ( name == mname ) { + return ( unsigned int )a; + } + } + + // we're here, yet - no default material with suitable color available. Generate one + std::unique_ptr<aiMaterial> mat(new aiMaterial()); + mat->AddProperty(&name,AI_MATKEY_NAME); + + const aiColor4D col = aiColor4D( 0.6f, 0.6f, 0.6f, 1.0f); // aiColor4D( color.r, color.g, color.b, 1.0f); + mat->AddProperty(&col,1, AI_MATKEY_COLOR_DIFFUSE); + + conv.materials.push_back(mat.release()); + return (unsigned int) conv.materials.size() - 1; +} + +} // ! IFC +} // ! Assimp + +#endif // ASSIMP_BUILD_NO_IFC_IMPORTER |