add assimp submodule

1 files changed, 202 insertions, 0 deletions

diff --git a/src/mesh/assimp-master/code/AssetLib/IFC/IFCMaterial.cpp b/src/mesh/assimp-master/code/AssetLib/IFC/IFCMaterial.cpp
new file mode 100644
index 0000000..6cd0e59
--- /dev/null
+++ b/src/mesh/assimp-master/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