diff --git a/code/FBXConverter.cpp b/code/FBXConverter.cpp index a8e4147d5..e7cdcc864 100644 --- a/code/FBXConverter.cpp +++ b/code/FBXConverter.cpp @@ -223,6 +223,9 @@ private: name_carrier = nodes_chain.back(); } + //setup metadata on newest node + SetupNodeMetadata(*model, *nodes_chain.back()); + // link all nodes in a row aiNode* last_parent = &parent; BOOST_FOREACH(aiNode* prenode, nodes_chain) { @@ -754,7 +757,28 @@ private: nd->mTransformation = nd->mTransformation * chain[i]; } } + + // ------------------------------------------------------------------------------------------------ + void SetupNodeMetadata(const Model& model, aiNode& nd) + { + const PropertyTable& props = model.Props(); + + // find user defined properties + const std::string& userProps = PropertyGet(props, "UDP3DSMAX", ""); + + //setup metadata //TODO: make metadata more friendly (eg. have Add()/Remove() functions to be easier to use) + aiMetadata* data = new aiMetadata(); + data->mNumProperties = 1; + data->mKeys = new aiString[data->mNumProperties](); + data->mValues = new aiString[data->mNumProperties](); + + //add user properties + data->mKeys[0].Set("UserProperties"); + data->mValues[0].Set(userProps); + + nd.mMetaData = data; + } // ------------------------------------------------------------------------------------------------ void ConvertModel(const Model& model, aiNode& nd, const aiMatrix4x4& node_global_transform) diff --git a/code/IFCLoader.cpp b/code/IFCLoader.cpp index eda905ad1..cff589863 100644 --- a/code/IFCLoader.cpp +++ b/code/IFCLoader.cpp @@ -1,965 +1,965 @@ -/* -Open Asset Import Library (assimp) ----------------------------------------------------------------------- - -Copyright (c) 2006-2012, 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 IFCLoad.cpp - * @brief Implementation of the Industry Foundation Classes loader. - */ -#include "AssimpPCH.h" - -#ifndef ASSIMP_BUILD_NO_IFC_IMPORTER - -#include -#include - -#ifndef ASSIMP_BUILD_NO_COMPRESSED_IFC -# include "../contrib/unzip/unzip.h" -#endif - -#include "IFCLoader.h" -#include "STEPFileReader.h" - -#include "IFCUtil.h" - -#include "StreamReader.h" -#include "MemoryIOWrapper.h" - -namespace Assimp { - template<> const std::string LogFunctions::log_prefix = "IFC: "; -} - -using namespace Assimp; -using namespace Assimp::Formatter; -using namespace Assimp::IFC; - -/* DO NOT REMOVE this comment block. The genentitylist.sh script - * just looks for names adhering to the IfcSomething naming scheme - * and includes all matches in the whitelist for code-generation. Thus, - * all entity classes that are only indirectly referenced need to be - * mentioned explicitly. - - IfcRepresentationMap - IfcProductRepresentation - IfcUnitAssignment - IfcClosedShell - IfcDoor - - */ - -namespace { - - -// forward declarations -void SetUnits(ConversionData& conv); -void SetCoordinateSpace(ConversionData& conv); -void ProcessSpatialStructures(ConversionData& conv); -aiNode* ProcessSpatialStructure(aiNode* parent, const IfcProduct& el ,ConversionData& conv); -void ProcessProductRepresentation(const IfcProduct& el, aiNode* nd, ConversionData& conv); -void MakeTreeRelative(ConversionData& conv); -void ConvertUnit(const EXPRESS::DataType& dt,ConversionData& conv); - -} // anon - -static const aiImporterDesc desc = { - "Industry Foundation Classes (IFC) Importer", - "", - "", - "", - aiImporterFlags_SupportBinaryFlavour, - 0, - 0, - 0, - 0, - "ifc ifczip" -}; - - -// ------------------------------------------------------------------------------------------------ -// Constructor to be privately used by Importer -IFCImporter::IFCImporter() -{} - -// ------------------------------------------------------------------------------------------------ -// Destructor, private as well -IFCImporter::~IFCImporter() -{ -} - -// ------------------------------------------------------------------------------------------------ -// Returns whether the class can handle the format of the given file. -bool IFCImporter::CanRead( const std::string& pFile, IOSystem* pIOHandler, bool checkSig) const -{ - const std::string& extension = GetExtension(pFile); - if (extension == "ifc" || extension == "ifczip") { - return true; - } - - else if ((!extension.length() || checkSig) && pIOHandler) { - // note: this is the common identification for STEP-encoded files, so - // it is only unambiguous as long as we don't support any further - // file formats with STEP as their encoding. - const char* tokens[] = {"ISO-10303-21"}; - return SearchFileHeaderForToken(pIOHandler,pFile,tokens,1); - } - return false; -} - -// ------------------------------------------------------------------------------------------------ -// List all extensions handled by this loader -const aiImporterDesc* IFCImporter::GetInfo () const -{ - return &desc; -} - - -// ------------------------------------------------------------------------------------------------ -// Setup configuration properties for the loader -void IFCImporter::SetupProperties(const Importer* pImp) -{ - settings.skipSpaceRepresentations = pImp->GetPropertyBool(AI_CONFIG_IMPORT_IFC_SKIP_SPACE_REPRESENTATIONS,true); - settings.skipCurveRepresentations = pImp->GetPropertyBool(AI_CONFIG_IMPORT_IFC_SKIP_CURVE_REPRESENTATIONS,true); - settings.useCustomTriangulation = pImp->GetPropertyBool(AI_CONFIG_IMPORT_IFC_CUSTOM_TRIANGULATION,true); - - settings.conicSamplingAngle = 10.f; - settings.skipAnnotations = true; -} - - -// ------------------------------------------------------------------------------------------------ -// Imports the given file into the given scene structure. -void IFCImporter::InternReadFile( const std::string& pFile, - aiScene* pScene, IOSystem* pIOHandler) -{ - boost::shared_ptr stream(pIOHandler->Open(pFile)); - if (!stream) { - ThrowException("Could not open file for reading"); - } - - - // if this is a ifczip file, decompress its contents first - if(GetExtension(pFile) == "ifczip") { -#ifndef ASSIMP_BUILD_NO_COMPRESSED_IFC - unzFile zip = unzOpen( pFile.c_str() ); - if(zip == NULL) { - ThrowException("Could not open ifczip file for reading, unzip failed"); - } - - // chop 'zip' postfix - std::string fileName = pFile.substr(0,pFile.length() - 3); - - std::string::size_type s = pFile.find_last_of('\\'); - if(s == std::string::npos) { - s = pFile.find_last_of('/'); - } - if(s != std::string::npos) { - fileName = fileName.substr(s+1); - } - - // search file (same name as the IFCZIP except for the file extension) and place file pointer there - if(UNZ_OK == unzGoToFirstFile(zip)) { - do { - // get file size, etc. - unz_file_info fileInfo; - char filename[256]; - unzGetCurrentFileInfo( zip , &fileInfo, filename, sizeof(filename), 0, 0, 0, 0 ); - if (GetExtension(filename) != "ifc") { - continue; - } - uint8_t* buff = new uint8_t[fileInfo.uncompressed_size]; - LogInfo("Decompressing IFCZIP file"); - unzOpenCurrentFile( zip ); - const int ret = unzReadCurrentFile( zip, buff, fileInfo.uncompressed_size); - size_t filesize = fileInfo.uncompressed_size; - if ( ret < 0 || size_t(ret) != filesize ) - { - delete[] buff; - ThrowException("Failed to decompress IFC ZIP file"); - } - unzCloseCurrentFile( zip ); - stream.reset(new MemoryIOStream(buff,fileInfo.uncompressed_size,true)); - break; +/* +Open Asset Import Library (assimp) +---------------------------------------------------------------------- - if (unzGoToNextFile(zip) == UNZ_END_OF_LIST_OF_FILE) { - ThrowException("Found no IFC file member in IFCZIP file (1)"); - } +Copyright (c) 2006-2012, 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 IFCLoad.cpp + * @brief Implementation of the Industry Foundation Classes loader. + */ +#include "AssimpPCH.h" + +#ifndef ASSIMP_BUILD_NO_IFC_IMPORTER + +#include +#include + +#ifndef ASSIMP_BUILD_NO_COMPRESSED_IFC +# include "../contrib/unzip/unzip.h" +#endif + +#include "IFCLoader.h" +#include "STEPFileReader.h" + +#include "IFCUtil.h" + +#include "StreamReader.h" +#include "MemoryIOWrapper.h" + +namespace Assimp { + template<> const std::string LogFunctions::log_prefix = "IFC: "; +} + +using namespace Assimp; +using namespace Assimp::Formatter; +using namespace Assimp::IFC; + +/* DO NOT REMOVE this comment block. The genentitylist.sh script + * just looks for names adhering to the IfcSomething naming scheme + * and includes all matches in the whitelist for code-generation. Thus, + * all entity classes that are only indirectly referenced need to be + * mentioned explicitly. + + IfcRepresentationMap + IfcProductRepresentation + IfcUnitAssignment + IfcClosedShell + IfcDoor + + */ + +namespace { + + +// forward declarations +void SetUnits(ConversionData& conv); +void SetCoordinateSpace(ConversionData& conv); +void ProcessSpatialStructures(ConversionData& conv); +aiNode* ProcessSpatialStructure(aiNode* parent, const IfcProduct& el ,ConversionData& conv); +void ProcessProductRepresentation(const IfcProduct& el, aiNode* nd, ConversionData& conv); +void MakeTreeRelative(ConversionData& conv); +void ConvertUnit(const EXPRESS::DataType& dt,ConversionData& conv); + +} // anon + +static const aiImporterDesc desc = { + "Industry Foundation Classes (IFC) Importer", + "", + "", + "", + aiImporterFlags_SupportBinaryFlavour, + 0, + 0, + 0, + 0, + "ifc ifczip" +}; + + +// ------------------------------------------------------------------------------------------------ +// Constructor to be privately used by Importer +IFCImporter::IFCImporter() +{} + +// ------------------------------------------------------------------------------------------------ +// Destructor, private as well +IFCImporter::~IFCImporter() +{ +} + +// ------------------------------------------------------------------------------------------------ +// Returns whether the class can handle the format of the given file. +bool IFCImporter::CanRead( const std::string& pFile, IOSystem* pIOHandler, bool checkSig) const +{ + const std::string& extension = GetExtension(pFile); + if (extension == "ifc" || extension == "ifczip") { + return true; + } + + else if ((!extension.length() || checkSig) && pIOHandler) { + // note: this is the common identification for STEP-encoded files, so + // it is only unambiguous as long as we don't support any further + // file formats with STEP as their encoding. + const char* tokens[] = {"ISO-10303-21"}; + return SearchFileHeaderForToken(pIOHandler,pFile,tokens,1); + } + return false; +} + +// ------------------------------------------------------------------------------------------------ +// List all extensions handled by this loader +const aiImporterDesc* IFCImporter::GetInfo () const +{ + return &desc; +} + + +// ------------------------------------------------------------------------------------------------ +// Setup configuration properties for the loader +void IFCImporter::SetupProperties(const Importer* pImp) +{ + settings.skipSpaceRepresentations = pImp->GetPropertyBool(AI_CONFIG_IMPORT_IFC_SKIP_SPACE_REPRESENTATIONS,true); + settings.skipCurveRepresentations = pImp->GetPropertyBool(AI_CONFIG_IMPORT_IFC_SKIP_CURVE_REPRESENTATIONS,true); + settings.useCustomTriangulation = pImp->GetPropertyBool(AI_CONFIG_IMPORT_IFC_CUSTOM_TRIANGULATION,true); + + settings.conicSamplingAngle = 10.f; + settings.skipAnnotations = true; +} + + +// ------------------------------------------------------------------------------------------------ +// Imports the given file into the given scene structure. +void IFCImporter::InternReadFile( const std::string& pFile, + aiScene* pScene, IOSystem* pIOHandler) +{ + boost::shared_ptr stream(pIOHandler->Open(pFile)); + if (!stream) { + ThrowException("Could not open file for reading"); + } + + + // if this is a ifczip file, decompress its contents first + if(GetExtension(pFile) == "ifczip") { +#ifndef ASSIMP_BUILD_NO_COMPRESSED_IFC + unzFile zip = unzOpen( pFile.c_str() ); + if(zip == NULL) { + ThrowException("Could not open ifczip file for reading, unzip failed"); + } + + // chop 'zip' postfix + std::string fileName = pFile.substr(0,pFile.length() - 3); + + std::string::size_type s = pFile.find_last_of('\\'); + if(s == std::string::npos) { + s = pFile.find_last_of('/'); + } + if(s != std::string::npos) { + fileName = fileName.substr(s+1); + } + + // search file (same name as the IFCZIP except for the file extension) and place file pointer there + if(UNZ_OK == unzGoToFirstFile(zip)) { + do { + // get file size, etc. + unz_file_info fileInfo; + char filename[256]; + unzGetCurrentFileInfo( zip , &fileInfo, filename, sizeof(filename), 0, 0, 0, 0 ); + if (GetExtension(filename) != "ifc") { + continue; + } + uint8_t* buff = new uint8_t[fileInfo.uncompressed_size]; + LogInfo("Decompressing IFCZIP file"); + unzOpenCurrentFile( zip ); + const int ret = unzReadCurrentFile( zip, buff, fileInfo.uncompressed_size); + size_t filesize = fileInfo.uncompressed_size; + if ( ret < 0 || size_t(ret) != filesize ) + { + delete[] buff; + ThrowException("Failed to decompress IFC ZIP file"); + } + unzCloseCurrentFile( zip ); + stream.reset(new MemoryIOStream(buff,fileInfo.uncompressed_size,true)); + break; + + if (unzGoToNextFile(zip) == UNZ_END_OF_LIST_OF_FILE) { + ThrowException("Found no IFC file member in IFCZIP file (1)"); + } } while(true); - } - else { - ThrowException("Found no IFC file member in IFCZIP file (2)"); - } - - unzClose(zip); -#else - ThrowException("Could not open ifczip file for reading, assimp was built without ifczip support"); -#endif - } - - boost::scoped_ptr db(STEP::ReadFileHeader(stream)); - const STEP::HeaderInfo& head = static_cast(*db).GetHeader(); - - if(!head.fileSchema.size() || head.fileSchema.substr(0,3) != "IFC") { - ThrowException("Unrecognized file schema: " + head.fileSchema); - } - - if (!DefaultLogger::isNullLogger()) { - LogDebug("File schema is \'" + head.fileSchema + '\''); - if (head.timestamp.length()) { - LogDebug("Timestamp \'" + head.timestamp + '\''); - } - if (head.app.length()) { - LogDebug("Application/Exporter identline is \'" + head.app + '\''); - } - } - - // obtain a copy of the machine-generated IFC scheme - EXPRESS::ConversionSchema schema; - GetSchema(schema); - - // tell the reader which entity types to track with special care - static const char* const types_to_track[] = { - "ifcsite", "ifcbuilding", "ifcproject" - }; - - // tell the reader for which types we need to simulate STEPs reverse indices - static const char* const inverse_indices_to_track[] = { - "ifcrelcontainedinspatialstructure", "ifcrelaggregates", "ifcrelvoidselement", "ifcreldefinesbyproperties", "ifcpropertyset", "ifcstyleditem" - }; - - // feed the IFC schema into the reader and pre-parse all lines - STEP::ReadFile(*db, schema, types_to_track, inverse_indices_to_track); - const STEP::LazyObject* proj = db->GetObject("ifcproject"); - if (!proj) { - ThrowException("missing IfcProject entity"); - } - - ConversionData conv(*db,proj->To(),pScene,settings); - SetUnits(conv); - SetCoordinateSpace(conv); - ProcessSpatialStructures(conv); - MakeTreeRelative(conv); - - // NOTE - this is a stress test for the importer, but it works only - // in a build with no entities disabled. See - // scripts/IFCImporter/CPPGenerator.py - // for more information. - #ifdef ASSIMP_IFC_TEST - db->EvaluateAll(); - #endif - - // do final data copying - if (conv.meshes.size()) { - pScene->mNumMeshes = static_cast(conv.meshes.size()); - pScene->mMeshes = new aiMesh*[pScene->mNumMeshes](); - std::copy(conv.meshes.begin(),conv.meshes.end(),pScene->mMeshes); - - // needed to keep the d'tor from burning us - conv.meshes.clear(); - } - - if (conv.materials.size()) { - pScene->mNumMaterials = static_cast(conv.materials.size()); - pScene->mMaterials = new aiMaterial*[pScene->mNumMaterials](); - std::copy(conv.materials.begin(),conv.materials.end(),pScene->mMaterials); - - // needed to keep the d'tor from burning us - conv.materials.clear(); - } - - // apply world coordinate system (which includes the scaling to convert to meters and a -90 degrees rotation around x) - aiMatrix4x4 scale, rot; - aiMatrix4x4::Scaling(static_cast(IfcVector3(conv.len_scale)),scale); - aiMatrix4x4::RotationX(-AI_MATH_HALF_PI_F,rot); - - pScene->mRootNode->mTransformation = rot * scale * conv.wcs * pScene->mRootNode->mTransformation; - - // this must be last because objects are evaluated lazily as we process them - if ( !DefaultLogger::isNullLogger() ){ - LogDebug((Formatter::format(),"STEP: evaluated ",db->GetEvaluatedObjectCount()," object records")); - } -} - -namespace { - - -// ------------------------------------------------------------------------------------------------ -void ConvertUnit(const IfcNamedUnit& unit,ConversionData& conv) -{ - if(const IfcSIUnit* const si = unit.ToPtr()) { - - if(si->UnitType == "LENGTHUNIT") { - conv.len_scale = si->Prefix ? ConvertSIPrefix(si->Prefix) : 1.f; - IFCImporter::LogDebug("got units used for lengths"); - } - if(si->UnitType == "PLANEANGLEUNIT") { - if (si->Name != "RADIAN") { - IFCImporter::LogWarn("expected base unit for angles to be radian"); - } - } - } - else if(const IfcConversionBasedUnit* const convu = unit.ToPtr()) { - - if(convu->UnitType == "PLANEANGLEUNIT") { - try { - conv.angle_scale = convu->ConversionFactor->ValueComponent->To(); - ConvertUnit(*convu->ConversionFactor->UnitComponent,conv); - IFCImporter::LogDebug("got units used for angles"); - } - catch(std::bad_cast&) { - IFCImporter::LogError("skipping unknown IfcConversionBasedUnit.ValueComponent entry - expected REAL"); - } - } - } -} - -// ------------------------------------------------------------------------------------------------ -void ConvertUnit(const EXPRESS::DataType& dt,ConversionData& conv) -{ - try { - const EXPRESS::ENTITY& e = dt.To(); - - const IfcNamedUnit& unit = e.ResolveSelect(conv.db); - if(unit.UnitType != "LENGTHUNIT" && unit.UnitType != "PLANEANGLEUNIT") { - return; - } - - ConvertUnit(unit,conv); - } - catch(std::bad_cast&) { - // not entity, somehow - IFCImporter::LogError("skipping unknown IfcUnit entry - expected entity"); - } -} - -// ------------------------------------------------------------------------------------------------ -void SetUnits(ConversionData& conv) -{ - // see if we can determine the coordinate space used to express. - for(size_t i = 0; i < conv.proj.UnitsInContext->Units.size(); ++i ) { - ConvertUnit(*conv.proj.UnitsInContext->Units[i],conv); - } -} - - -// ------------------------------------------------------------------------------------------------ -void SetCoordinateSpace(ConversionData& conv) -{ - const IfcRepresentationContext* fav = NULL; - BOOST_FOREACH(const IfcRepresentationContext& v, conv.proj.RepresentationContexts) { - fav = &v; - // Model should be the most suitable type of context, hence ignore the others - if (v.ContextType && v.ContextType.Get() == "Model") { - break; - } - } - if (fav) { - if(const IfcGeometricRepresentationContext* const geo = fav->ToPtr()) { - ConvertAxisPlacement(conv.wcs, *geo->WorldCoordinateSystem, conv); - IFCImporter::LogDebug("got world coordinate system"); - } - } -} - - -// ------------------------------------------------------------------------------------------------ -void ResolveObjectPlacement(aiMatrix4x4& m, const IfcObjectPlacement& place, ConversionData& conv) -{ - if (const IfcLocalPlacement* const local = place.ToPtr()){ - IfcMatrix4 tmp; - ConvertAxisPlacement(tmp, *local->RelativePlacement, conv); - - m = static_cast(tmp); - - if (local->PlacementRelTo) { - aiMatrix4x4 tmp; - ResolveObjectPlacement(tmp,local->PlacementRelTo.Get(),conv); - m = tmp * m; - } - } - else { - IFCImporter::LogWarn("skipping unknown IfcObjectPlacement entity, type is " + place.GetClassName()); - } -} - -// ------------------------------------------------------------------------------------------------ -void GetAbsTransform(aiMatrix4x4& out, const aiNode* nd, ConversionData& conv) -{ - aiMatrix4x4 t; - if (nd->mParent) { - GetAbsTransform(t,nd->mParent,conv); - } - out = t*nd->mTransformation; -} - -// ------------------------------------------------------------------------------------------------ -bool ProcessMappedItem(const IfcMappedItem& mapped, aiNode* nd_src, std::vector< aiNode* >& subnodes_src, ConversionData& conv) -{ - // insert a custom node here, the cartesian transform operator is simply a conventional transformation matrix - std::auto_ptr nd(new aiNode()); - nd->mName.Set("IfcMappedItem"); - - // handle the Cartesian operator - IfcMatrix4 m; - ConvertTransformOperator(m, *mapped.MappingTarget); - - IfcMatrix4 msrc; - ConvertAxisPlacement(msrc,*mapped.MappingSource->MappingOrigin,conv); - - msrc = m*msrc; - - std::vector meshes; - const size_t old_openings = conv.collect_openings ? conv.collect_openings->size() : 0; - if (conv.apply_openings) { - IfcMatrix4 minv = msrc; - minv.Inverse(); - BOOST_FOREACH(TempOpening& open,*conv.apply_openings){ - open.Transform(minv); - } - } - - const IfcRepresentation& repr = mapped.MappingSource->MappedRepresentation; - - bool got = false; - BOOST_FOREACH(const IfcRepresentationItem& item, repr.Items) { - if(!ProcessRepresentationItem(item,meshes,conv)) { - IFCImporter::LogWarn("skipping mapped entity of type " + item.GetClassName() + ", no representations could be generated"); - } - else got = true; - } - - if (!got) { - return false; - } - - AssignAddedMeshes(meshes,nd.get(),conv); - if (conv.collect_openings) { - - // if this pass serves us only to collect opening geometry, - // make sure we transform the TempMesh's which we need to - // preserve as well. - if(const size_t diff = conv.collect_openings->size() - old_openings) { - for(size_t i = 0; i < diff; ++i) { - (*conv.collect_openings)[old_openings+i].Transform(msrc); - } - } - } - - nd->mTransformation = nd_src->mTransformation * static_cast( msrc ); - subnodes_src.push_back(nd.release()); - - return true; -} - -// ------------------------------------------------------------------------------------------------ -struct RateRepresentationPredicate { - - int Rate(const IfcRepresentation* r) const { - // the smaller, the better - - if (! r->RepresentationIdentifier) { - // neutral choice if no extra information is specified - return 0; - } - - - const std::string& name = r->RepresentationIdentifier.Get(); - if (name == "MappedRepresentation") { - if (!r->Items.empty()) { - // take the first item and base our choice on it - const IfcMappedItem* const m = r->Items.front()->ToPtr(); - if (m) { - return Rate(m->MappingSource->MappedRepresentation); - } - } - return 100; - } - - return Rate(name); - } - - int Rate(const std::string& r) const { - - - if (r == "SolidModel") { - return -3; - } - - // give strong preference to extruded geometry. - if (r == "SweptSolid") { - return -10; - } - - if (r == "Clipping") { - return -5; - } - - // 'Brep' is difficult to get right due to possible voids in the - // polygon boundaries, so take it only if we are forced to (i.e. - // if the only alternative is (non-clipping) boolean operations, - // which are not supported at all). - if (r == "Brep") { - return -2; - } - - // Curves, bounding boxes - those will most likely not be loaded - // as we can't make any use out of this data. So consider them - // last. - if (r == "BoundingBox" || r == "Curve2D") { - return 100; - } - return 0; - } - - bool operator() (const IfcRepresentation* a, const IfcRepresentation* b) const { - return Rate(a) < Rate(b); - } -}; - -// ------------------------------------------------------------------------------------------------ -void ProcessProductRepresentation(const IfcProduct& el, aiNode* nd, std::vector< aiNode* >& subnodes, ConversionData& conv) -{ - if(!el.Representation) { - return; - } - std::vector meshes; - // we want only one representation type, so bring them in a suitable order (i.e try those - // that look as if we could read them quickly at first). This way of reading - // representation is relatively generic and allows the concrete implementations - // for the different representation types to make some sensible choices what - // to load and what not to load. - const STEP::ListOf< STEP::Lazy< IfcRepresentation >, 1, 0 >& src = el.Representation.Get()->Representations; - std::vector repr_ordered(src.size()); - std::copy(src.begin(),src.end(),repr_ordered.begin()); - std::sort(repr_ordered.begin(),repr_ordered.end(),RateRepresentationPredicate()); - BOOST_FOREACH(const IfcRepresentation* repr, repr_ordered) { - bool res = false; - BOOST_FOREACH(const IfcRepresentationItem& item, repr->Items) { - if(const IfcMappedItem* const geo = item.ToPtr()) { - res = ProcessMappedItem(*geo,nd,subnodes,conv) || res; - } - else { - res = ProcessRepresentationItem(item,meshes,conv) || res; - } - } - // if we got something meaningful at this point, skip any further representations - if(res) { - break; - } - } - AssignAddedMeshes(meshes,nd,conv); -} - -typedef std::map Metadata; - -// ------------------------------------------------------------------------------------------------ -void ProcessMetadata(const ListOf< Lazy< IfcProperty >, 1, 0 >& set, ConversionData& conv, Metadata& properties, - const std::string& prefix = "", - unsigned int nest = 0) -{ - BOOST_FOREACH(const IfcProperty& property, set) { - const std::string& key = prefix.length() > 0 ? (prefix + "." + property.Name) : property.Name; - if (const IfcPropertySingleValue* const singleValue = property.ToPtr()) { - if (singleValue->NominalValue) { - if (const EXPRESS::STRING* str = singleValue->NominalValue.Get()->ToPtr()) { - std::string value = static_cast(*str); - properties[key]=value; - } - else if (const EXPRESS::REAL* val = singleValue->NominalValue.Get()->ToPtr()) { - float value = static_cast(*val); - std::stringstream s; - s << value; - properties[key]=s.str(); - } - else if (const EXPRESS::INTEGER* val = singleValue->NominalValue.Get()->ToPtr()) { - int64_t value = static_cast(*val); - std::stringstream s; - s << value; - properties[key]=s.str(); - } - } - } - else if (const IfcPropertyListValue* const listValue = property.ToPtr()) { - std::stringstream ss; - ss << "["; - unsigned index=0; - BOOST_FOREACH(const IfcValue::Out& v, listValue->ListValues) { - if (!v) continue; - if (const EXPRESS::STRING* str = v->ToPtr()) { - std::string value = static_cast(*str); - ss << "'" << value << "'"; - } - else if (const EXPRESS::REAL* val = v->ToPtr()) { - float value = static_cast(*val); - ss << value; - } - else if (const EXPRESS::INTEGER* val = v->ToPtr()) { - int64_t value = static_cast(*val); - ss << value; - } - if (index+1ListValues.size()) { - ss << ","; - } - index++; - } - ss << "]"; - properties[key]=ss.str(); - } - else if (const IfcComplexProperty* const complexProp = property.ToPtr()) { - if(nest > 2) { // mostly arbitrary limit to prevent stack overflow vulnerabilities - IFCImporter::LogError("maximum nesting level for IfcComplexProperty reached, skipping this property."); - } - else { - ProcessMetadata(complexProp->HasProperties, conv, properties, key, nest + 1); - } - } - else { - properties[key]=""; - } - } -} - - -// ------------------------------------------------------------------------------------------------ -void ProcessMetadata(uint64_t relDefinesByPropertiesID, ConversionData& conv, Metadata& properties) -{ - if (const IfcRelDefinesByProperties* const pset = conv.db.GetObject(relDefinesByPropertiesID)->ToPtr()) { - if (const IfcPropertySet* const set = conv.db.GetObject(pset->RelatingPropertyDefinition->GetID())->ToPtr()) { - ProcessMetadata(set->HasProperties, conv, properties); - } - } -} - -// ------------------------------------------------------------------------------------------------ -aiNode* ProcessSpatialStructure(aiNode* parent, const IfcProduct& el, ConversionData& conv, std::vector* collect_openings = NULL) -{ - const STEP::DB::RefMap& refs = conv.db.GetRefs(); - - // skip over space and annotation nodes - usually, these have no meaning in Assimp's context - if(conv.settings.skipSpaceRepresentations) { - if(const IfcSpace* const space = el.ToPtr()) { - IFCImporter::LogDebug("skipping IfcSpace entity due to importer settings"); - return NULL; - } - } - - if(conv.settings.skipAnnotations) { - if(const IfcAnnotation* const ann = el.ToPtr()) { - IFCImporter::LogDebug("skipping IfcAnnotation entity due to importer settings"); - return NULL; - } - } - - // add an output node for this spatial structure - std::auto_ptr nd(new aiNode()); - nd->mName.Set(el.GetClassName()+"_"+(el.Name?el.Name.Get():"Unnamed")+"_"+el.GlobalId); - nd->mParent = parent; - - conv.already_processed.insert(el.GetID()); - - // check for node metadata - STEP::DB::RefMapRange children = refs.equal_range(el.GetID()); - if (children.first!=refs.end()) { - Metadata properties; - if (children.first==children.second) { - // handles single property set - ProcessMetadata((*children.first).second, conv, properties); - } - else { - // handles multiple property sets (currently all property sets are merged, - // which may not be the best solution in the long run) - for (STEP::DB::RefMap::const_iterator it=children.first; it!=children.second; ++it) { - ProcessMetadata((*it).second, conv, properties); - } - } - - if (!properties.empty()) { - aiMetadata* data = new aiMetadata(); - data->mNumProperties = properties.size(); - data->mKeys = new aiString*[data->mNumProperties](); - data->mValues = new aiString*[data->mNumProperties](); - - unsigned int i = 0; - BOOST_FOREACH(const Metadata::value_type& kv, properties) { - data->mKeys[i] = new aiString(kv.first); - if (kv.second.length() > 0) { - data->mValues[i] = new aiString(kv.second); - } - ++i; - } - nd->mMetaData = data; - } - } - - if(el.ObjectPlacement) { - ResolveObjectPlacement(nd->mTransformation,el.ObjectPlacement.Get(),conv); - } - - std::vector openings; - - IfcMatrix4 myInv; - bool didinv = false; - - // convert everything contained directly within this structure, - // this may result in more nodes. - std::vector< aiNode* > subnodes; - try { - // locate aggregates and 'contained-in-here'-elements of this spatial structure and add them in recursively - // on our way, collect openings in *this* element - STEP::DB::RefMapRange range = refs.equal_range(el.GetID()); - - for(STEP::DB::RefMapRange range2 = range; range2.first != range.second; ++range2.first) { - // skip over meshes that have already been processed before. This is strictly necessary - // because the reverse indices also include references contained in argument lists and - // therefore every element has a back-reference hold by its parent. - if (conv.already_processed.find((*range2.first).second) != conv.already_processed.end()) { - continue; - } - const STEP::LazyObject& obj = conv.db.MustGetObject((*range2.first).second); - - // handle regularly-contained elements - if(const IfcRelContainedInSpatialStructure* const cont = obj->ToPtr()) { - if(cont->RelatingStructure->GetID() != el.GetID()) { - continue; - } - BOOST_FOREACH(const IfcProduct& pro, cont->RelatedElements) { - if(const IfcOpeningElement* const open = pro.ToPtr()) { - // IfcOpeningElement is handled below. Sadly we can't use it here as is: - // The docs say that opening elements are USUALLY attached to building storey, - // but we want them for the building elements to which they belong. - continue; - } - - aiNode* const ndnew = ProcessSpatialStructure(nd.get(),pro,conv,NULL); - if(ndnew) { - subnodes.push_back( ndnew ); - } - } - } - // handle openings, which we collect in a list rather than adding them to the node graph - else if(const IfcRelVoidsElement* const fills = obj->ToPtr()) { - if(fills->RelatingBuildingElement->GetID() == el.GetID()) { - const IfcFeatureElementSubtraction& open = fills->RelatedOpeningElement; - - // move opening elements to a separate node since they are semantically different than elements that are just 'contained' - std::auto_ptr nd_aggr(new aiNode()); - nd_aggr->mName.Set("$RelVoidsElement"); - nd_aggr->mParent = nd.get(); - - nd_aggr->mTransformation = nd->mTransformation; - - std::vector openings_local; - aiNode* const ndnew = ProcessSpatialStructure( nd_aggr.get(),open, conv,&openings_local); - if (ndnew) { - - nd_aggr->mNumChildren = 1; - nd_aggr->mChildren = new aiNode*[1](); - - - nd_aggr->mChildren[0] = ndnew; - - if(openings_local.size()) { - if (!didinv) { - myInv = aiMatrix4x4(nd->mTransformation ).Inverse(); - didinv = true; - } - - // we need all openings to be in the local space of *this* node, so transform them - BOOST_FOREACH(TempOpening& op,openings_local) { - op.Transform( myInv*nd_aggr->mChildren[0]->mTransformation); - openings.push_back(op); - } - } - subnodes.push_back( nd_aggr.release() ); - } - } - } - } - - for(;range.first != range.second; ++range.first) { - // see note in loop above - if (conv.already_processed.find((*range.first).second) != conv.already_processed.end()) { - continue; - } - if(const IfcRelAggregates* const aggr = conv.db.GetObject((*range.first).second)->ToPtr()) { - if(aggr->RelatingObject->GetID() != el.GetID()) { - continue; - } - - // move aggregate elements to a separate node since they are semantically different than elements that are just 'contained' - std::auto_ptr nd_aggr(new aiNode()); - nd_aggr->mName.Set("$RelAggregates"); - nd_aggr->mParent = nd.get(); - - nd_aggr->mTransformation = nd->mTransformation; - - nd_aggr->mChildren = new aiNode*[aggr->RelatedObjects.size()](); - BOOST_FOREACH(const IfcObjectDefinition& def, aggr->RelatedObjects) { - if(const IfcProduct* const prod = def.ToPtr()) { - - aiNode* const ndnew = ProcessSpatialStructure(nd_aggr.get(),*prod,conv,NULL); - if(ndnew) { - nd_aggr->mChildren[nd_aggr->mNumChildren++] = ndnew; - } - } - } - - subnodes.push_back( nd_aggr.release() ); - } - } - - conv.collect_openings = collect_openings; - if(!conv.collect_openings) { - conv.apply_openings = &openings; - } - - ProcessProductRepresentation(el,nd.get(),subnodes,conv); - conv.apply_openings = conv.collect_openings = NULL; - - if (subnodes.size()) { - nd->mChildren = new aiNode*[subnodes.size()](); - BOOST_FOREACH(aiNode* nd2, subnodes) { - nd->mChildren[nd->mNumChildren++] = nd2; - nd2->mParent = nd.get(); - } - } - } - catch(...) { - // it hurts, but I don't want to pull boost::ptr_vector into -noboost only for these few spots here - std::for_each(subnodes.begin(),subnodes.end(),delete_fun()); - throw; - } - - ai_assert(conv.already_processed.find(el.GetID()) != conv.already_processed.end()); - conv.already_processed.erase(conv.already_processed.find(el.GetID())); - return nd.release(); -} - -// ------------------------------------------------------------------------------------------------ -void ProcessSpatialStructures(ConversionData& conv) -{ - // XXX add support for multiple sites (i.e. IfcSpatialStructureElements with composition == COMPLEX) - - - // process all products in the file. it is reasonable to assume that a - // file that is relevant for us contains at least a site or a building. - const STEP::DB::ObjectMapByType& map = conv.db.GetObjectsByType(); - - ai_assert(map.find("ifcsite") != map.end()); - const STEP::DB::ObjectSet* range = &map.find("ifcsite")->second; - - if (range->empty()) { - ai_assert(map.find("ifcbuilding") != map.end()); - range = &map.find("ifcbuilding")->second; - if (range->empty()) { - // no site, no building - fail; - IFCImporter::ThrowException("no root element found (expected IfcBuilding or preferably IfcSite)"); - } - } - - - BOOST_FOREACH(const STEP::LazyObject* lz, *range) { - const IfcSpatialStructureElement* const prod = lz->ToPtr(); - if(!prod) { - continue; - } - IFCImporter::LogDebug("looking at spatial structure `" + (prod->Name ? prod->Name.Get() : "unnamed") + "`" + (prod->ObjectType? " which is of type " + prod->ObjectType.Get():"")); - - // the primary site is referenced by an IFCRELAGGREGATES element which assigns it to the IFCPRODUCT - const STEP::DB::RefMap& refs = conv.db.GetRefs(); - STEP::DB::RefMapRange range = refs.equal_range(conv.proj.GetID()); - for(;range.first != range.second; ++range.first) { - if(const IfcRelAggregates* const aggr = conv.db.GetObject((*range.first).second)->ToPtr()) { - - BOOST_FOREACH(const IfcObjectDefinition& def, aggr->RelatedObjects) { - // comparing pointer values is not sufficient, we would need to cast them to the same type first - // as there is multiple inheritance in the game. - if (def.GetID() == prod->GetID()) { - IFCImporter::LogDebug("selecting this spatial structure as root structure"); - // got it, this is the primary site. - conv.out->mRootNode = ProcessSpatialStructure(NULL,*prod,conv,NULL); - return; - } - } - - } - } - } - - - IFCImporter::LogWarn("failed to determine primary site element, taking the first IfcSite"); - BOOST_FOREACH(const STEP::LazyObject* lz, *range) { - const IfcSpatialStructureElement* const prod = lz->ToPtr(); - if(!prod) { - continue; - } - - conv.out->mRootNode = ProcessSpatialStructure(NULL,*prod,conv,NULL); - return; - } - - IFCImporter::ThrowException("failed to determine primary site element"); -} - -// ------------------------------------------------------------------------------------------------ -void MakeTreeRelative(aiNode* start, const aiMatrix4x4& combined) -{ - // combined is the parent's absolute transformation matrix - const aiMatrix4x4 old = start->mTransformation; - - if (!combined.IsIdentity()) { - start->mTransformation = aiMatrix4x4(combined).Inverse() * start->mTransformation; - } - - // All nodes store absolute transformations right now, so we need to make them relative - for (unsigned int i = 0; i < start->mNumChildren; ++i) { - MakeTreeRelative(start->mChildren[i],old); - } -} - -// ------------------------------------------------------------------------------------------------ -void MakeTreeRelative(ConversionData& conv) -{ - MakeTreeRelative(conv.out->mRootNode,IfcMatrix4()); -} - -} // !anon - - - -#endif + } + else { + ThrowException("Found no IFC file member in IFCZIP file (2)"); + } + + unzClose(zip); +#else + ThrowException("Could not open ifczip file for reading, assimp was built without ifczip support"); +#endif + } + + boost::scoped_ptr db(STEP::ReadFileHeader(stream)); + const STEP::HeaderInfo& head = static_cast(*db).GetHeader(); + + if(!head.fileSchema.size() || head.fileSchema.substr(0,3) != "IFC") { + ThrowException("Unrecognized file schema: " + head.fileSchema); + } + + if (!DefaultLogger::isNullLogger()) { + LogDebug("File schema is \'" + head.fileSchema + '\''); + if (head.timestamp.length()) { + LogDebug("Timestamp \'" + head.timestamp + '\''); + } + if (head.app.length()) { + LogDebug("Application/Exporter identline is \'" + head.app + '\''); + } + } + + // obtain a copy of the machine-generated IFC scheme + EXPRESS::ConversionSchema schema; + GetSchema(schema); + + // tell the reader which entity types to track with special care + static const char* const types_to_track[] = { + "ifcsite", "ifcbuilding", "ifcproject" + }; + + // tell the reader for which types we need to simulate STEPs reverse indices + static const char* const inverse_indices_to_track[] = { + "ifcrelcontainedinspatialstructure", "ifcrelaggregates", "ifcrelvoidselement", "ifcreldefinesbyproperties", "ifcpropertyset", "ifcstyleditem" + }; + + // feed the IFC schema into the reader and pre-parse all lines + STEP::ReadFile(*db, schema, types_to_track, inverse_indices_to_track); + const STEP::LazyObject* proj = db->GetObject("ifcproject"); + if (!proj) { + ThrowException("missing IfcProject entity"); + } + + ConversionData conv(*db,proj->To(),pScene,settings); + SetUnits(conv); + SetCoordinateSpace(conv); + ProcessSpatialStructures(conv); + MakeTreeRelative(conv); + + // NOTE - this is a stress test for the importer, but it works only + // in a build with no entities disabled. See + // scripts/IFCImporter/CPPGenerator.py + // for more information. + #ifdef ASSIMP_IFC_TEST + db->EvaluateAll(); + #endif + + // do final data copying + if (conv.meshes.size()) { + pScene->mNumMeshes = static_cast(conv.meshes.size()); + pScene->mMeshes = new aiMesh*[pScene->mNumMeshes](); + std::copy(conv.meshes.begin(),conv.meshes.end(),pScene->mMeshes); + + // needed to keep the d'tor from burning us + conv.meshes.clear(); + } + + if (conv.materials.size()) { + pScene->mNumMaterials = static_cast(conv.materials.size()); + pScene->mMaterials = new aiMaterial*[pScene->mNumMaterials](); + std::copy(conv.materials.begin(),conv.materials.end(),pScene->mMaterials); + + // needed to keep the d'tor from burning us + conv.materials.clear(); + } + + // apply world coordinate system (which includes the scaling to convert to meters and a -90 degrees rotation around x) + aiMatrix4x4 scale, rot; + aiMatrix4x4::Scaling(static_cast(IfcVector3(conv.len_scale)),scale); + aiMatrix4x4::RotationX(-AI_MATH_HALF_PI_F,rot); + + pScene->mRootNode->mTransformation = rot * scale * conv.wcs * pScene->mRootNode->mTransformation; + + // this must be last because objects are evaluated lazily as we process them + if ( !DefaultLogger::isNullLogger() ){ + LogDebug((Formatter::format(),"STEP: evaluated ",db->GetEvaluatedObjectCount()," object records")); + } +} + +namespace { + + +// ------------------------------------------------------------------------------------------------ +void ConvertUnit(const IfcNamedUnit& unit,ConversionData& conv) +{ + if(const IfcSIUnit* const si = unit.ToPtr()) { + + if(si->UnitType == "LENGTHUNIT") { + conv.len_scale = si->Prefix ? ConvertSIPrefix(si->Prefix) : 1.f; + IFCImporter::LogDebug("got units used for lengths"); + } + if(si->UnitType == "PLANEANGLEUNIT") { + if (si->Name != "RADIAN") { + IFCImporter::LogWarn("expected base unit for angles to be radian"); + } + } + } + else if(const IfcConversionBasedUnit* const convu = unit.ToPtr()) { + + if(convu->UnitType == "PLANEANGLEUNIT") { + try { + conv.angle_scale = convu->ConversionFactor->ValueComponent->To(); + ConvertUnit(*convu->ConversionFactor->UnitComponent,conv); + IFCImporter::LogDebug("got units used for angles"); + } + catch(std::bad_cast&) { + IFCImporter::LogError("skipping unknown IfcConversionBasedUnit.ValueComponent entry - expected REAL"); + } + } + } +} + +// ------------------------------------------------------------------------------------------------ +void ConvertUnit(const EXPRESS::DataType& dt,ConversionData& conv) +{ + try { + const EXPRESS::ENTITY& e = dt.To(); + + const IfcNamedUnit& unit = e.ResolveSelect(conv.db); + if(unit.UnitType != "LENGTHUNIT" && unit.UnitType != "PLANEANGLEUNIT") { + return; + } + + ConvertUnit(unit,conv); + } + catch(std::bad_cast&) { + // not entity, somehow + IFCImporter::LogError("skipping unknown IfcUnit entry - expected entity"); + } +} + +// ------------------------------------------------------------------------------------------------ +void SetUnits(ConversionData& conv) +{ + // see if we can determine the coordinate space used to express. + for(size_t i = 0; i < conv.proj.UnitsInContext->Units.size(); ++i ) { + ConvertUnit(*conv.proj.UnitsInContext->Units[i],conv); + } +} + + +// ------------------------------------------------------------------------------------------------ +void SetCoordinateSpace(ConversionData& conv) +{ + const IfcRepresentationContext* fav = NULL; + BOOST_FOREACH(const IfcRepresentationContext& v, conv.proj.RepresentationContexts) { + fav = &v; + // Model should be the most suitable type of context, hence ignore the others + if (v.ContextType && v.ContextType.Get() == "Model") { + break; + } + } + if (fav) { + if(const IfcGeometricRepresentationContext* const geo = fav->ToPtr()) { + ConvertAxisPlacement(conv.wcs, *geo->WorldCoordinateSystem, conv); + IFCImporter::LogDebug("got world coordinate system"); + } + } +} + + +// ------------------------------------------------------------------------------------------------ +void ResolveObjectPlacement(aiMatrix4x4& m, const IfcObjectPlacement& place, ConversionData& conv) +{ + if (const IfcLocalPlacement* const local = place.ToPtr()){ + IfcMatrix4 tmp; + ConvertAxisPlacement(tmp, *local->RelativePlacement, conv); + + m = static_cast(tmp); + + if (local->PlacementRelTo) { + aiMatrix4x4 tmp; + ResolveObjectPlacement(tmp,local->PlacementRelTo.Get(),conv); + m = tmp * m; + } + } + else { + IFCImporter::LogWarn("skipping unknown IfcObjectPlacement entity, type is " + place.GetClassName()); + } +} + +// ------------------------------------------------------------------------------------------------ +void GetAbsTransform(aiMatrix4x4& out, const aiNode* nd, ConversionData& conv) +{ + aiMatrix4x4 t; + if (nd->mParent) { + GetAbsTransform(t,nd->mParent,conv); + } + out = t*nd->mTransformation; +} + +// ------------------------------------------------------------------------------------------------ +bool ProcessMappedItem(const IfcMappedItem& mapped, aiNode* nd_src, std::vector< aiNode* >& subnodes_src, ConversionData& conv) +{ + // insert a custom node here, the cartesian transform operator is simply a conventional transformation matrix + std::auto_ptr nd(new aiNode()); + nd->mName.Set("IfcMappedItem"); + + // handle the Cartesian operator + IfcMatrix4 m; + ConvertTransformOperator(m, *mapped.MappingTarget); + + IfcMatrix4 msrc; + ConvertAxisPlacement(msrc,*mapped.MappingSource->MappingOrigin,conv); + + msrc = m*msrc; + + std::vector meshes; + const size_t old_openings = conv.collect_openings ? conv.collect_openings->size() : 0; + if (conv.apply_openings) { + IfcMatrix4 minv = msrc; + minv.Inverse(); + BOOST_FOREACH(TempOpening& open,*conv.apply_openings){ + open.Transform(minv); + } + } + + const IfcRepresentation& repr = mapped.MappingSource->MappedRepresentation; + + bool got = false; + BOOST_FOREACH(const IfcRepresentationItem& item, repr.Items) { + if(!ProcessRepresentationItem(item,meshes,conv)) { + IFCImporter::LogWarn("skipping mapped entity of type " + item.GetClassName() + ", no representations could be generated"); + } + else got = true; + } + + if (!got) { + return false; + } + + AssignAddedMeshes(meshes,nd.get(),conv); + if (conv.collect_openings) { + + // if this pass serves us only to collect opening geometry, + // make sure we transform the TempMesh's which we need to + // preserve as well. + if(const size_t diff = conv.collect_openings->size() - old_openings) { + for(size_t i = 0; i < diff; ++i) { + (*conv.collect_openings)[old_openings+i].Transform(msrc); + } + } + } + + nd->mTransformation = nd_src->mTransformation * static_cast( msrc ); + subnodes_src.push_back(nd.release()); + + return true; +} + +// ------------------------------------------------------------------------------------------------ +struct RateRepresentationPredicate { + + int Rate(const IfcRepresentation* r) const { + // the smaller, the better + + if (! r->RepresentationIdentifier) { + // neutral choice if no extra information is specified + return 0; + } + + + const std::string& name = r->RepresentationIdentifier.Get(); + if (name == "MappedRepresentation") { + if (!r->Items.empty()) { + // take the first item and base our choice on it + const IfcMappedItem* const m = r->Items.front()->ToPtr(); + if (m) { + return Rate(m->MappingSource->MappedRepresentation); + } + } + return 100; + } + + return Rate(name); + } + + int Rate(const std::string& r) const { + + + if (r == "SolidModel") { + return -3; + } + + // give strong preference to extruded geometry. + if (r == "SweptSolid") { + return -10; + } + + if (r == "Clipping") { + return -5; + } + + // 'Brep' is difficult to get right due to possible voids in the + // polygon boundaries, so take it only if we are forced to (i.e. + // if the only alternative is (non-clipping) boolean operations, + // which are not supported at all). + if (r == "Brep") { + return -2; + } + + // Curves, bounding boxes - those will most likely not be loaded + // as we can't make any use out of this data. So consider them + // last. + if (r == "BoundingBox" || r == "Curve2D") { + return 100; + } + return 0; + } + + bool operator() (const IfcRepresentation* a, const IfcRepresentation* b) const { + return Rate(a) < Rate(b); + } +}; + +// ------------------------------------------------------------------------------------------------ +void ProcessProductRepresentation(const IfcProduct& el, aiNode* nd, std::vector< aiNode* >& subnodes, ConversionData& conv) +{ + if(!el.Representation) { + return; + } + std::vector meshes; + // we want only one representation type, so bring them in a suitable order (i.e try those + // that look as if we could read them quickly at first). This way of reading + // representation is relatively generic and allows the concrete implementations + // for the different representation types to make some sensible choices what + // to load and what not to load. + const STEP::ListOf< STEP::Lazy< IfcRepresentation >, 1, 0 >& src = el.Representation.Get()->Representations; + std::vector repr_ordered(src.size()); + std::copy(src.begin(),src.end(),repr_ordered.begin()); + std::sort(repr_ordered.begin(),repr_ordered.end(),RateRepresentationPredicate()); + BOOST_FOREACH(const IfcRepresentation* repr, repr_ordered) { + bool res = false; + BOOST_FOREACH(const IfcRepresentationItem& item, repr->Items) { + if(const IfcMappedItem* const geo = item.ToPtr()) { + res = ProcessMappedItem(*geo,nd,subnodes,conv) || res; + } + else { + res = ProcessRepresentationItem(item,meshes,conv) || res; + } + } + // if we got something meaningful at this point, skip any further representations + if(res) { + break; + } + } + AssignAddedMeshes(meshes,nd,conv); +} + +typedef std::map Metadata; + +// ------------------------------------------------------------------------------------------------ +void ProcessMetadata(const ListOf< Lazy< IfcProperty >, 1, 0 >& set, ConversionData& conv, Metadata& properties, + const std::string& prefix = "", + unsigned int nest = 0) +{ + BOOST_FOREACH(const IfcProperty& property, set) { + const std::string& key = prefix.length() > 0 ? (prefix + "." + property.Name) : property.Name; + if (const IfcPropertySingleValue* const singleValue = property.ToPtr()) { + if (singleValue->NominalValue) { + if (const EXPRESS::STRING* str = singleValue->NominalValue.Get()->ToPtr()) { + std::string value = static_cast(*str); + properties[key]=value; + } + else if (const EXPRESS::REAL* val = singleValue->NominalValue.Get()->ToPtr()) { + float value = static_cast(*val); + std::stringstream s; + s << value; + properties[key]=s.str(); + } + else if (const EXPRESS::INTEGER* val = singleValue->NominalValue.Get()->ToPtr()) { + int64_t value = static_cast(*val); + std::stringstream s; + s << value; + properties[key]=s.str(); + } + } + } + else if (const IfcPropertyListValue* const listValue = property.ToPtr()) { + std::stringstream ss; + ss << "["; + unsigned index=0; + BOOST_FOREACH(const IfcValue::Out& v, listValue->ListValues) { + if (!v) continue; + if (const EXPRESS::STRING* str = v->ToPtr()) { + std::string value = static_cast(*str); + ss << "'" << value << "'"; + } + else if (const EXPRESS::REAL* val = v->ToPtr()) { + float value = static_cast(*val); + ss << value; + } + else if (const EXPRESS::INTEGER* val = v->ToPtr()) { + int64_t value = static_cast(*val); + ss << value; + } + if (index+1ListValues.size()) { + ss << ","; + } + index++; + } + ss << "]"; + properties[key]=ss.str(); + } + else if (const IfcComplexProperty* const complexProp = property.ToPtr()) { + if(nest > 2) { // mostly arbitrary limit to prevent stack overflow vulnerabilities + IFCImporter::LogError("maximum nesting level for IfcComplexProperty reached, skipping this property."); + } + else { + ProcessMetadata(complexProp->HasProperties, conv, properties, key, nest + 1); + } + } + else { + properties[key]=""; + } + } +} + + +// ------------------------------------------------------------------------------------------------ +void ProcessMetadata(uint64_t relDefinesByPropertiesID, ConversionData& conv, Metadata& properties) +{ + if (const IfcRelDefinesByProperties* const pset = conv.db.GetObject(relDefinesByPropertiesID)->ToPtr()) { + if (const IfcPropertySet* const set = conv.db.GetObject(pset->RelatingPropertyDefinition->GetID())->ToPtr()) { + ProcessMetadata(set->HasProperties, conv, properties); + } + } +} + +// ------------------------------------------------------------------------------------------------ +aiNode* ProcessSpatialStructure(aiNode* parent, const IfcProduct& el, ConversionData& conv, std::vector* collect_openings = NULL) +{ + const STEP::DB::RefMap& refs = conv.db.GetRefs(); + + // skip over space and annotation nodes - usually, these have no meaning in Assimp's context + if(conv.settings.skipSpaceRepresentations) { + if(const IfcSpace* const space = el.ToPtr()) { + IFCImporter::LogDebug("skipping IfcSpace entity due to importer settings"); + return NULL; + } + } + + if(conv.settings.skipAnnotations) { + if(const IfcAnnotation* const ann = el.ToPtr()) { + IFCImporter::LogDebug("skipping IfcAnnotation entity due to importer settings"); + return NULL; + } + } + + // add an output node for this spatial structure + std::auto_ptr nd(new aiNode()); + nd->mName.Set(el.GetClassName()+"_"+(el.Name?el.Name.Get():"Unnamed")+"_"+el.GlobalId); + nd->mParent = parent; + + conv.already_processed.insert(el.GetID()); + + // check for node metadata + STEP::DB::RefMapRange children = refs.equal_range(el.GetID()); + if (children.first!=refs.end()) { + Metadata properties; + if (children.first==children.second) { + // handles single property set + ProcessMetadata((*children.first).second, conv, properties); + } + else { + // handles multiple property sets (currently all property sets are merged, + // which may not be the best solution in the long run) + for (STEP::DB::RefMap::const_iterator it=children.first; it!=children.second; ++it) { + ProcessMetadata((*it).second, conv, properties); + } + } + + if (!properties.empty()) { + aiMetadata* data = new aiMetadata(); + data->mNumProperties = properties.size(); + data->mKeys = new aiString[data->mNumProperties](); + data->mValues = new aiString[data->mNumProperties](); + + unsigned int i = 0; + BOOST_FOREACH(const Metadata::value_type& kv, properties) { + data->mKeys[i].Set(kv.first); + if (kv.second.length() > 0) { + data->mValues[i].Set(kv.second); + } + ++i; + } + nd->mMetaData = data; + } + } + + if(el.ObjectPlacement) { + ResolveObjectPlacement(nd->mTransformation,el.ObjectPlacement.Get(),conv); + } + + std::vector openings; + + IfcMatrix4 myInv; + bool didinv = false; + + // convert everything contained directly within this structure, + // this may result in more nodes. + std::vector< aiNode* > subnodes; + try { + // locate aggregates and 'contained-in-here'-elements of this spatial structure and add them in recursively + // on our way, collect openings in *this* element + STEP::DB::RefMapRange range = refs.equal_range(el.GetID()); + + for(STEP::DB::RefMapRange range2 = range; range2.first != range.second; ++range2.first) { + // skip over meshes that have already been processed before. This is strictly necessary + // because the reverse indices also include references contained in argument lists and + // therefore every element has a back-reference hold by its parent. + if (conv.already_processed.find((*range2.first).second) != conv.already_processed.end()) { + continue; + } + const STEP::LazyObject& obj = conv.db.MustGetObject((*range2.first).second); + + // handle regularly-contained elements + if(const IfcRelContainedInSpatialStructure* const cont = obj->ToPtr()) { + if(cont->RelatingStructure->GetID() != el.GetID()) { + continue; + } + BOOST_FOREACH(const IfcProduct& pro, cont->RelatedElements) { + if(const IfcOpeningElement* const open = pro.ToPtr()) { + // IfcOpeningElement is handled below. Sadly we can't use it here as is: + // The docs say that opening elements are USUALLY attached to building storey, + // but we want them for the building elements to which they belong. + continue; + } + + aiNode* const ndnew = ProcessSpatialStructure(nd.get(),pro,conv,NULL); + if(ndnew) { + subnodes.push_back( ndnew ); + } + } + } + // handle openings, which we collect in a list rather than adding them to the node graph + else if(const IfcRelVoidsElement* const fills = obj->ToPtr()) { + if(fills->RelatingBuildingElement->GetID() == el.GetID()) { + const IfcFeatureElementSubtraction& open = fills->RelatedOpeningElement; + + // move opening elements to a separate node since they are semantically different than elements that are just 'contained' + std::auto_ptr nd_aggr(new aiNode()); + nd_aggr->mName.Set("$RelVoidsElement"); + nd_aggr->mParent = nd.get(); + + nd_aggr->mTransformation = nd->mTransformation; + + std::vector openings_local; + aiNode* const ndnew = ProcessSpatialStructure( nd_aggr.get(),open, conv,&openings_local); + if (ndnew) { + + nd_aggr->mNumChildren = 1; + nd_aggr->mChildren = new aiNode*[1](); + + + nd_aggr->mChildren[0] = ndnew; + + if(openings_local.size()) { + if (!didinv) { + myInv = aiMatrix4x4(nd->mTransformation ).Inverse(); + didinv = true; + } + + // we need all openings to be in the local space of *this* node, so transform them + BOOST_FOREACH(TempOpening& op,openings_local) { + op.Transform( myInv*nd_aggr->mChildren[0]->mTransformation); + openings.push_back(op); + } + } + subnodes.push_back( nd_aggr.release() ); + } + } + } + } + + for(;range.first != range.second; ++range.first) { + // see note in loop above + if (conv.already_processed.find((*range.first).second) != conv.already_processed.end()) { + continue; + } + if(const IfcRelAggregates* const aggr = conv.db.GetObject((*range.first).second)->ToPtr()) { + if(aggr->RelatingObject->GetID() != el.GetID()) { + continue; + } + + // move aggregate elements to a separate node since they are semantically different than elements that are just 'contained' + std::auto_ptr nd_aggr(new aiNode()); + nd_aggr->mName.Set("$RelAggregates"); + nd_aggr->mParent = nd.get(); + + nd_aggr->mTransformation = nd->mTransformation; + + nd_aggr->mChildren = new aiNode*[aggr->RelatedObjects.size()](); + BOOST_FOREACH(const IfcObjectDefinition& def, aggr->RelatedObjects) { + if(const IfcProduct* const prod = def.ToPtr()) { + + aiNode* const ndnew = ProcessSpatialStructure(nd_aggr.get(),*prod,conv,NULL); + if(ndnew) { + nd_aggr->mChildren[nd_aggr->mNumChildren++] = ndnew; + } + } + } + + subnodes.push_back( nd_aggr.release() ); + } + } + + conv.collect_openings = collect_openings; + if(!conv.collect_openings) { + conv.apply_openings = &openings; + } + + ProcessProductRepresentation(el,nd.get(),subnodes,conv); + conv.apply_openings = conv.collect_openings = NULL; + + if (subnodes.size()) { + nd->mChildren = new aiNode*[subnodes.size()](); + BOOST_FOREACH(aiNode* nd2, subnodes) { + nd->mChildren[nd->mNumChildren++] = nd2; + nd2->mParent = nd.get(); + } + } + } + catch(...) { + // it hurts, but I don't want to pull boost::ptr_vector into -noboost only for these few spots here + std::for_each(subnodes.begin(),subnodes.end(),delete_fun()); + throw; + } + + ai_assert(conv.already_processed.find(el.GetID()) != conv.already_processed.end()); + conv.already_processed.erase(conv.already_processed.find(el.GetID())); + return nd.release(); +} + +// ------------------------------------------------------------------------------------------------ +void ProcessSpatialStructures(ConversionData& conv) +{ + // XXX add support for multiple sites (i.e. IfcSpatialStructureElements with composition == COMPLEX) + + + // process all products in the file. it is reasonable to assume that a + // file that is relevant for us contains at least a site or a building. + const STEP::DB::ObjectMapByType& map = conv.db.GetObjectsByType(); + + ai_assert(map.find("ifcsite") != map.end()); + const STEP::DB::ObjectSet* range = &map.find("ifcsite")->second; + + if (range->empty()) { + ai_assert(map.find("ifcbuilding") != map.end()); + range = &map.find("ifcbuilding")->second; + if (range->empty()) { + // no site, no building - fail; + IFCImporter::ThrowException("no root element found (expected IfcBuilding or preferably IfcSite)"); + } + } + + + BOOST_FOREACH(const STEP::LazyObject* lz, *range) { + const IfcSpatialStructureElement* const prod = lz->ToPtr(); + if(!prod) { + continue; + } + IFCImporter::LogDebug("looking at spatial structure `" + (prod->Name ? prod->Name.Get() : "unnamed") + "`" + (prod->ObjectType? " which is of type " + prod->ObjectType.Get():"")); + + // the primary site is referenced by an IFCRELAGGREGATES element which assigns it to the IFCPRODUCT + const STEP::DB::RefMap& refs = conv.db.GetRefs(); + STEP::DB::RefMapRange range = refs.equal_range(conv.proj.GetID()); + for(;range.first != range.second; ++range.first) { + if(const IfcRelAggregates* const aggr = conv.db.GetObject((*range.first).second)->ToPtr()) { + + BOOST_FOREACH(const IfcObjectDefinition& def, aggr->RelatedObjects) { + // comparing pointer values is not sufficient, we would need to cast them to the same type first + // as there is multiple inheritance in the game. + if (def.GetID() == prod->GetID()) { + IFCImporter::LogDebug("selecting this spatial structure as root structure"); + // got it, this is the primary site. + conv.out->mRootNode = ProcessSpatialStructure(NULL,*prod,conv,NULL); + return; + } + } + + } + } + } + + + IFCImporter::LogWarn("failed to determine primary site element, taking the first IfcSite"); + BOOST_FOREACH(const STEP::LazyObject* lz, *range) { + const IfcSpatialStructureElement* const prod = lz->ToPtr(); + if(!prod) { + continue; + } + + conv.out->mRootNode = ProcessSpatialStructure(NULL,*prod,conv,NULL); + return; + } + + IFCImporter::ThrowException("failed to determine primary site element"); +} + +// ------------------------------------------------------------------------------------------------ +void MakeTreeRelative(aiNode* start, const aiMatrix4x4& combined) +{ + // combined is the parent's absolute transformation matrix + const aiMatrix4x4 old = start->mTransformation; + + if (!combined.IsIdentity()) { + start->mTransformation = aiMatrix4x4(combined).Inverse() * start->mTransformation; + } + + // All nodes store absolute transformations right now, so we need to make them relative + for (unsigned int i = 0; i < start->mNumChildren; ++i) { + MakeTreeRelative(start->mChildren[i],old); + } +} + +// ------------------------------------------------------------------------------------------------ +void MakeTreeRelative(ConversionData& conv) +{ + MakeTreeRelative(conv.out->mRootNode,IfcMatrix4()); +} + +} // !anon + + + +#endif diff --git a/include/assimp/metadata.h b/include/assimp/metadata.h index c5dc0638f..942029ae6 100644 --- a/include/assimp/metadata.h +++ b/include/assimp/metadata.h @@ -62,11 +62,11 @@ struct aiMetadata unsigned int mNumProperties; /** Arrays of keys, may not be NULL. Entries in this array may not be NULL as well. */ - C_STRUCT aiString** mKeys; + C_STRUCT aiString* mKeys; /** Arrays of values, may not be NULL. Entries in this array may be NULL if the * corresponding property key has no assigned value. */ - C_STRUCT aiString** mValues; + C_STRUCT aiString* mValues; #ifdef __cplusplus @@ -83,26 +83,18 @@ struct aiMetadata /** Destructor */ ~aiMetadata() { - if (mKeys && mValues) { - for (unsigned i=0; i#AI_CONFIG_PP_CT_MAX_SMOOTHING_ANGLE, which allows you to specify * a maximum smoothing angle for the algorithm. However, usually you'll * want to leave it at the default value. @@ -114,7 +117,7 @@ enum aiPostProcessSteps * solution: *
    *
  • Specify both #aiProcess_Triangulate and #aiProcess_SortByPType
    • - * Ignore all point and line meshes when you process assimp's output + *
  • Ignore all point and line meshes when you process assimp's output
    • *
*/ aiProcess_Triangulate = 0x8, @@ -124,7 +127,7 @@ enum aiPostProcessSteps * light sources, cameras, textures, vertex components). * * The components to be removed are specified in a separate - * configuration option, #AI_CONFIG_PP_RVC_FLAGS. This is quite useful + * importer property, #AI_CONFIG_PP_RVC_FLAGS. This is quite useful * if you don't need all parts of the output structure. Vertex colors * are rarely used today for example... Calling this step to remove unneeded * data from the pipeline as early as possible results in increased @@ -167,7 +170,7 @@ enum aiPostProcessSteps * they're usually already there. * * This flag may not be specified together with - * #aiProcess_GenNormals. There's a configuration option, + * #aiProcess_GenNormals. There's a importer property, * #AI_CONFIG_PP_GSN_MAX_SMOOTHING_ANGLE which allows you to specify * an angle maximum for the normal smoothing algorithm. Normals exceeding * this limit are not smoothed, resulting in a 'hard' seam between two faces. @@ -187,7 +190,7 @@ enum aiPostProcessSteps * * The split limits can (and should!) be set through the * #AI_CONFIG_PP_SLM_VERTEX_LIMIT and #AI_CONFIG_PP_SLM_TRIANGLE_LIMIT - * settings. The default values are #AI_SLM_DEFAULT_MAX_VERTICES and + * importer properties. The default values are #AI_SLM_DEFAULT_MAX_VERTICES and * #AI_SLM_DEFAULT_MAX_TRIANGLES. * * Note that splitting is generally a time-consuming task, but only if there's @@ -224,8 +227,8 @@ enum aiPostProcessSteps * important vertex weights are removed and the remaining vertex weights are * renormalized so that the weights still sum up to 1. * The default bone weight limit is 4 (defined as #AI_LMW_MAX_WEIGHTS in - * config.h), but you can use the #AI_CONFIG_PP_LBW_MAX_WEIGHTS setting to - * supply your own limit to the post processing step. + * config.h), but you can use the #AI_CONFIG_PP_LBW_MAX_WEIGHTS importer + * property to supply your own limit to the post processing step. * * If you intend to perform the skinning in hardware, this post processing * step might be of interest to you. @@ -270,8 +273,8 @@ enum aiPostProcessSteps * paper). * * If you intend to render huge models in hardware, this step might - * be of interest to you. The #AI_CONFIG_PP_ICL_PTCACHE_SIZEconfig - * setting can be used to fine-tune the cache optimization. + * be of interest to you. The #AI_CONFIG_PP_ICL_PTCACHE_SIZE + * importer property can be used to fine-tune the cache optimization. */ aiProcess_ImproveCacheLocality = 0x800, @@ -292,7 +295,7 @@ enum aiPostProcessSteps * So, if you're passing additional information through the * content pipeline (probably using *magic* material names), don't * specify this flag. Alternatively take a look at the - * #AI_CONFIG_PP_RRM_EXCLUDE_LIST setting. + * #AI_CONFIG_PP_RRM_EXCLUDE_LIST importer property. */ aiProcess_RemoveRedundantMaterials = 0x1000, @@ -318,9 +321,9 @@ enum aiPostProcessSteps * returns, just one bit is set in aiMesh::mPrimitiveTypes. This is * especially useful for real-time rendering where point and line * primitives are often ignored or rendered separately. - * You can use the #AI_CONFIG_PP_SBP_REMOVE option to specify which - * primitive types you need. This can be used to easily exclude - * lines and points, which are rarely used, from the import. + * You can use the #AI_CONFIG_PP_SBP_REMOVE importer property to + * specify which primitive types you need. This can be used to easily + * exclude lines and points, which are rarely used, from the import. */ aiProcess_SortByPType = 0x8000, @@ -336,9 +339,9 @@ enum aiPostProcessSteps *
    *
  • Specify the #aiProcess_FindDegenerates flag. *
    • - *
  • Set the AI_CONFIG_PP_FD_REMOVE option to 1. This will - * cause the step to remove degenerate triangles from the import - * as soon as they're detected. They won't pass any further + *
  • Set the #AI_CONFIG_PP_FD_REMOVE importer property to + * 1. This will cause the step to remove degenerate triangles from the + * import as soon as they're detected. They won't pass any further * pipeline steps. *
    • *
@@ -349,7 +352,7 @@ enum aiPostProcessSteps *
  • Specify the #aiProcess_SortByPType flag. This moves line and * point primitives to separate meshes. *
    • - *
  • Set the AI_CONFIG_PP_SBP_REMOVE option to + *
  • Set the #AI_CONFIG_PP_SBP_REMOVE importer property to * @code aiPrimitiveType_POINTS | aiPrimitiveType_LINES * @endcode to cause SortByPType to reject point * and line meshes from the scene. @@ -446,9 +449,9 @@ enum aiPostProcessSteps * * Node names can be lost during this step. If you use special 'tag nodes' * to pass additional information through your content pipeline, use the - * #AI_CONFIG_PP_OG_EXCLUDE_LIST setting to specify a list of node - * names you want to be kept. Nodes matching one of the names in this list won't - * be touched or modified. + * #AI_CONFIG_PP_OG_EXCLUDE_LIST importer property to specify a + * list of node names you want to be kept. Nodes matching one of the names + * in this list won't be touched or modified. * * Use this flag with caution. Most simple files will be collapsed to a * single node, so complex hierarchies are usually completely lost. This is not @@ -627,4 +630,4 @@ enum aiPostProcessSteps } // end of extern "C" #endif -#endif // AI_POSTPROCESS_H_INC \ No newline at end of file +#endif // AI_POSTPROCESS_H_INC