nuclear@0: /*
nuclear@0: Open Asset Import Library (assimp)
nuclear@0: ----------------------------------------------------------------------
nuclear@0: 
nuclear@0: Copyright (c) 2006-2012, assimp team
nuclear@0: All rights reserved.
nuclear@0: 
nuclear@0: Redistribution and use of this software in source and binary forms, 
nuclear@0: with or without modification, are permitted provided that the 
nuclear@0: following conditions are met:
nuclear@0: 
nuclear@0: * Redistributions of source code must retain the above
nuclear@0:   copyright notice, this list of conditions and the
nuclear@0:   following disclaimer.
nuclear@0: 
nuclear@0: * Redistributions in binary form must reproduce the above
nuclear@0:   copyright notice, this list of conditions and the
nuclear@0:   following disclaimer in the documentation and/or other
nuclear@0:   materials provided with the distribution.
nuclear@0: 
nuclear@0: * Neither the name of the assimp team, nor the names of its
nuclear@0:   contributors may be used to endorse or promote products
nuclear@0:   derived from this software without specific prior
nuclear@0:   written permission of the assimp team.
nuclear@0: 
nuclear@0: THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 
nuclear@0: "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 
nuclear@0: LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
nuclear@0: A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 
nuclear@0: OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
nuclear@0: SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 
nuclear@0: LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
nuclear@0: DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 
nuclear@0: THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
nuclear@0: (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
nuclear@0: OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
nuclear@0: 
nuclear@0: ----------------------------------------------------------------------
nuclear@0: */
nuclear@0: 
nuclear@0: /** @file  FBXMeshGeometry.cpp
nuclear@0:  *  @brief Assimp::FBX::MeshGeometry implementation
nuclear@0:  */
nuclear@0: #include "AssimpPCH.h"
nuclear@0: 
nuclear@0: #ifndef ASSIMP_BUILD_NO_FBX_IMPORTER
nuclear@0: 
nuclear@0: #include <functional>
nuclear@0: 
nuclear@0: #include "FBXParser.h"
nuclear@0: #include "FBXDocument.h"
nuclear@0: #include "FBXImporter.h"
nuclear@0: #include "FBXImportSettings.h"
nuclear@0: #include "FBXDocumentUtil.h"
nuclear@0: 
nuclear@0: 
nuclear@0: namespace Assimp {
nuclear@0: namespace FBX {
nuclear@0: 
nuclear@0: 	using namespace Util;
nuclear@0: 
nuclear@0: 
nuclear@0: // ------------------------------------------------------------------------------------------------
nuclear@0: Geometry::Geometry(uint64_t id, const Element& element, const std::string& name, const Document& doc)
nuclear@0: 	: Object(id, element,name)
nuclear@0: 	, skin()
nuclear@0: {
nuclear@0: 	const std::vector<const Connection*>& conns = doc.GetConnectionsByDestinationSequenced(ID(),"Deformer");
nuclear@0: 	BOOST_FOREACH(const Connection* con, conns) {
nuclear@0: 		const Skin* const sk = ProcessSimpleConnection<Skin>(*con, false, "Skin -> Geometry", element);
nuclear@0: 		if(sk) {
nuclear@0: 			skin = sk;
nuclear@0: 			break;
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: // ------------------------------------------------------------------------------------------------
nuclear@0: Geometry::~Geometry()
nuclear@0: {
nuclear@0: 
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: 
nuclear@0: // ------------------------------------------------------------------------------------------------
nuclear@0: MeshGeometry::MeshGeometry(uint64_t id, const Element& element, const std::string& name, const Document& doc)
nuclear@0: : Geometry(id, element,name, doc)
nuclear@0: {
nuclear@0: 	const Scope* sc = element.Compound();
nuclear@0: 	if (!sc) {
nuclear@0: 		DOMError("failed to read Geometry object (class: Mesh), no data scope found");
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	// must have Mesh elements:
nuclear@0: 	const Element& Vertices = GetRequiredElement(*sc,"Vertices",&element);
nuclear@0: 	const Element& PolygonVertexIndex = GetRequiredElement(*sc,"PolygonVertexIndex",&element);
nuclear@0: 
nuclear@0: 	// optional Mesh elements:
nuclear@0: 	const ElementCollection& Layer = sc->GetCollection("Layer");
nuclear@0: 
nuclear@0: 	std::vector<aiVector3D> tempVerts;
nuclear@0: 	ParseVectorDataArray(tempVerts,Vertices);
nuclear@0: 
nuclear@0: 	if(tempVerts.empty()) {
nuclear@0: 		FBXImporter::LogWarn("encountered mesh with no vertices");
nuclear@0: 		return;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	std::vector<int> tempFaces;
nuclear@0: 	ParseVectorDataArray(tempFaces,PolygonVertexIndex);
nuclear@0: 
nuclear@0: 	if(tempFaces.empty()) {
nuclear@0: 		FBXImporter::LogWarn("encountered mesh with no faces");
nuclear@0: 		return;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	vertices.reserve(tempFaces.size());
nuclear@0: 	faces.reserve(tempFaces.size() / 3);
nuclear@0: 
nuclear@0: 	mapping_offsets.resize(tempVerts.size());
nuclear@0: 	mapping_counts.resize(tempVerts.size(),0);
nuclear@0: 	mappings.resize(tempFaces.size());
nuclear@0: 
nuclear@0: 	const size_t vertex_count = tempVerts.size();
nuclear@0: 
nuclear@0: 	// generate output vertices, computing an adjacency table to
nuclear@0: 	// preserve the mapping from fbx indices to *this* indexing.
nuclear@0: 	unsigned int count = 0;
nuclear@0: 	BOOST_FOREACH(int index, tempFaces) {
nuclear@0: 		const int absi = index < 0 ? (-index - 1) : index;
nuclear@0: 		if(static_cast<size_t>(absi) >= vertex_count) {
nuclear@0: 			DOMError("polygon vertex index out of range",&PolygonVertexIndex);
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		vertices.push_back(tempVerts[absi]);
nuclear@0: 		++count;
nuclear@0: 
nuclear@0: 		++mapping_counts[absi];
nuclear@0: 
nuclear@0: 		if (index < 0) {
nuclear@0: 			faces.push_back(count);
nuclear@0: 			count = 0;
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	unsigned int cursor = 0;
nuclear@0: 	for (size_t i = 0, e = tempVerts.size(); i < e; ++i) {
nuclear@0: 		mapping_offsets[i] = cursor;
nuclear@0: 		cursor += mapping_counts[i];
nuclear@0: 
nuclear@0: 		mapping_counts[i] = 0;
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	cursor = 0;
nuclear@0: 	BOOST_FOREACH(int index, tempFaces) {
nuclear@0: 		const int absi = index < 0 ? (-index - 1) : index;
nuclear@0: 		mappings[mapping_offsets[absi] + mapping_counts[absi]++] = cursor++;
nuclear@0: 	}
nuclear@0: 	
nuclear@0: 	// if settings.readAllLayers is true:
nuclear@0: 	//  * read all layers, try to load as many vertex channels as possible
nuclear@0: 	// if settings.readAllLayers is false:
nuclear@0: 	//  * read only the layer with index 0, but warn about any further layers 
nuclear@0: 	for (ElementMap::const_iterator it = Layer.first; it != Layer.second; ++it) {
nuclear@0: 		const TokenList& tokens = (*it).second->Tokens();
nuclear@0: 
nuclear@0: 		const char* err;
nuclear@0: 		const int index = ParseTokenAsInt(*tokens[0], err);
nuclear@0: 		if(err) {
nuclear@0: 			DOMError(err,&element);
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		if(doc.Settings().readAllLayers || index == 0) {
nuclear@0: 			const Scope& layer = GetRequiredScope(*(*it).second);
nuclear@0: 			ReadLayer(layer);
nuclear@0: 		}
nuclear@0: 		else {
nuclear@0: 			FBXImporter::LogWarn("ignoring additional geometry layers");
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: // ------------------------------------------------------------------------------------------------
nuclear@0: MeshGeometry::~MeshGeometry()
nuclear@0: {
nuclear@0: 
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: 
nuclear@0: // ------------------------------------------------------------------------------------------------
nuclear@0: void MeshGeometry::ReadLayer(const Scope& layer)
nuclear@0: {
nuclear@0: 	const ElementCollection& LayerElement = layer.GetCollection("LayerElement");
nuclear@0: 	for (ElementMap::const_iterator eit = LayerElement.first; eit != LayerElement.second; ++eit) {
nuclear@0: 		const Scope& elayer = GetRequiredScope(*(*eit).second);
nuclear@0: 
nuclear@0: 		ReadLayerElement(elayer);
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: // ------------------------------------------------------------------------------------------------
nuclear@0: void MeshGeometry::ReadLayerElement(const Scope& layerElement)
nuclear@0: {
nuclear@0: 	const Element& Type = GetRequiredElement(layerElement,"Type");
nuclear@0: 	const Element& TypedIndex = GetRequiredElement(layerElement,"TypedIndex");
nuclear@0: 
nuclear@0: 	const std::string& type = ParseTokenAsString(GetRequiredToken(Type,0));
nuclear@0: 	const int typedIndex = ParseTokenAsInt(GetRequiredToken(TypedIndex,0));
nuclear@0: 
nuclear@0: 	const Scope& top = GetRequiredScope(element);
nuclear@0: 	const ElementCollection candidates = top.GetCollection(type);
nuclear@0: 
nuclear@0: 	for (ElementMap::const_iterator it = candidates.first; it != candidates.second; ++it) {
nuclear@0: 		const int index = ParseTokenAsInt(GetRequiredToken(*(*it).second,0));
nuclear@0: 		if(index == typedIndex) {
nuclear@0: 			ReadVertexData(type,typedIndex,GetRequiredScope(*(*it).second));
nuclear@0: 			return;
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	FBXImporter::LogError(Formatter::format("failed to resolve vertex layer element: ") 
nuclear@0: 		<< type << ", index: " << typedIndex);
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: // ------------------------------------------------------------------------------------------------
nuclear@0: void MeshGeometry::ReadVertexData(const std::string& type, int index, const Scope& source)
nuclear@0: {
nuclear@0: 	const std::string& MappingInformationType = ParseTokenAsString(GetRequiredToken(
nuclear@0: 		GetRequiredElement(source,"MappingInformationType"),0)
nuclear@0: 	);
nuclear@0: 
nuclear@0: 	const std::string& ReferenceInformationType = ParseTokenAsString(GetRequiredToken(
nuclear@0: 		GetRequiredElement(source,"ReferenceInformationType"),0)
nuclear@0: 	);
nuclear@0: 	
nuclear@0: 	if (type == "LayerElementUV") {
nuclear@0: 		if(index >= AI_MAX_NUMBER_OF_TEXTURECOORDS) {
nuclear@0: 			FBXImporter::LogError(Formatter::format("ignoring UV layer, maximum number of UV channels exceeded: ") 
nuclear@0: 				<< index << " (limit is " << AI_MAX_NUMBER_OF_TEXTURECOORDS << ")" );
nuclear@0: 			return;
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		const Element* Name = source["Name"];
nuclear@0: 		uvNames[index] = "";
nuclear@0: 		if(Name) {
nuclear@0: 			uvNames[index] = ParseTokenAsString(GetRequiredToken(*Name,0));
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		ReadVertexDataUV(uvs[index],source,
nuclear@0: 			MappingInformationType,
nuclear@0: 			ReferenceInformationType
nuclear@0: 		);
nuclear@0: 	}
nuclear@0: 	else if (type == "LayerElementMaterial") {
nuclear@0: 		if (materials.size() > 0) {
nuclear@0: 			FBXImporter::LogError("ignoring additional material layer");
nuclear@0: 			return;
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		std::vector<int> temp_materials;
nuclear@0: 
nuclear@0: 		ReadVertexDataMaterials(temp_materials,source,
nuclear@0: 			MappingInformationType,
nuclear@0: 			ReferenceInformationType
nuclear@0: 		);
nuclear@0: 
nuclear@0: 		// sometimes, there will be only negative entries. Drop the material
nuclear@0: 		// layer in such a case (I guess it means a default material should
nuclear@0: 		// be used). This is what the converter would do anyway, and it
nuclear@0: 		// avoids loosing the material if there are more material layers
nuclear@0: 		// coming of which at least one contains actual data (did observe
nuclear@0: 		// that with one test file).
nuclear@0: 		const size_t count_neg = std::count_if(temp_materials.begin(),temp_materials.end(),std::bind2nd(std::less<int>(),0));
nuclear@0: 		if(count_neg == temp_materials.size()) {
nuclear@0: 			FBXImporter::LogWarn("ignoring dummy material layer (all entries -1)");
nuclear@0: 			return;
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		std::swap(temp_materials, materials);
nuclear@0: 	}
nuclear@0: 	else if (type == "LayerElementNormal") {
nuclear@0: 		if (normals.size() > 0) {
nuclear@0: 			FBXImporter::LogError("ignoring additional normal layer");
nuclear@0: 			return;
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		ReadVertexDataNormals(normals,source,
nuclear@0: 			MappingInformationType,
nuclear@0: 			ReferenceInformationType
nuclear@0: 		);
nuclear@0: 	}
nuclear@0: 	else if (type == "LayerElementTangent") {
nuclear@0: 		if (tangents.size() > 0) {
nuclear@0: 			FBXImporter::LogError("ignoring additional tangent layer");
nuclear@0: 			return;
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		ReadVertexDataTangents(tangents,source,
nuclear@0: 			MappingInformationType,
nuclear@0: 			ReferenceInformationType
nuclear@0: 		);
nuclear@0: 	}
nuclear@0: 	else if (type == "LayerElementBinormal") {
nuclear@0: 		if (binormals.size() > 0) {
nuclear@0: 			FBXImporter::LogError("ignoring additional binormal layer");
nuclear@0: 			return;
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		ReadVertexDataBinormals(binormals,source,
nuclear@0: 			MappingInformationType,
nuclear@0: 			ReferenceInformationType
nuclear@0: 		);
nuclear@0: 	}
nuclear@0: 	else if (type == "LayerElementColor") {
nuclear@0: 		if(index >= AI_MAX_NUMBER_OF_COLOR_SETS) {
nuclear@0: 			FBXImporter::LogError(Formatter::format("ignoring vertex color layer, maximum number of color sets exceeded: ") 
nuclear@0: 				<< index << " (limit is " << AI_MAX_NUMBER_OF_COLOR_SETS << ")" );
nuclear@0: 			return;
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		ReadVertexDataColors(colors[index],source,
nuclear@0: 			MappingInformationType,
nuclear@0: 			ReferenceInformationType
nuclear@0: 		);
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: // ------------------------------------------------------------------------------------------------
nuclear@0: // Lengthy utility function to read and resolve a FBX vertex data array - that is, the
nuclear@0: // output is in polygon vertex order. This logic is used for reading normals, UVs, colors,
nuclear@0: // tangents ..
nuclear@0: template <typename T>
nuclear@0: void ResolveVertexDataArray(std::vector<T>& data_out, const Scope& source, 
nuclear@0: 	const std::string& MappingInformationType,
nuclear@0: 	const std::string& ReferenceInformationType,
nuclear@0: 	const char* dataElementName,
nuclear@0: 	const char* indexDataElementName,
nuclear@0: 	size_t vertex_count,
nuclear@0: 	const std::vector<unsigned int>& mapping_counts,
nuclear@0: 	const std::vector<unsigned int>& mapping_offsets,
nuclear@0: 	const std::vector<unsigned int>& mappings)
nuclear@0: {
nuclear@0: 	std::vector<T> tempUV;
nuclear@0: 	ParseVectorDataArray(tempUV,GetRequiredElement(source,dataElementName));
nuclear@0: 
nuclear@0: 	// handle permutations of Mapping and Reference type - it would be nice to
nuclear@0: 	// deal with this more elegantly and with less redundancy, but right
nuclear@0: 	// now it seems unavoidable.
nuclear@0: 	if (MappingInformationType == "ByVertice" && ReferenceInformationType == "Direct") {	
nuclear@0: 		data_out.resize(vertex_count);
nuclear@0: 		for (size_t i = 0, e = tempUV.size(); i < e; ++i) {
nuclear@0: 
nuclear@0: 			const unsigned int istart = mapping_offsets[i], iend = istart + mapping_counts[i];
nuclear@0: 			for (unsigned int j = istart; j < iend; ++j) {
nuclear@0: 				data_out[mappings[j]] = tempUV[i];
nuclear@0: 			}
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: 	else if (MappingInformationType == "ByVertice" && ReferenceInformationType == "IndexToDirect") {	
nuclear@0: 		data_out.resize(vertex_count);
nuclear@0: 
nuclear@0: 		std::vector<int> uvIndices;
nuclear@0: 		ParseVectorDataArray(uvIndices,GetRequiredElement(source,indexDataElementName));
nuclear@0: 
nuclear@0: 		for (size_t i = 0, e = uvIndices.size(); i < e; ++i) {
nuclear@0: 
nuclear@0: 			const unsigned int istart = mapping_offsets[i], iend = istart + mapping_counts[i];
nuclear@0: 			for (unsigned int j = istart; j < iend; ++j) {
nuclear@0: 				if(static_cast<size_t>(uvIndices[i]) >= tempUV.size()) {
nuclear@0: 					DOMError("index out of range",&GetRequiredElement(source,indexDataElementName));
nuclear@0: 				}
nuclear@0: 				data_out[mappings[j]] = tempUV[uvIndices[i]];
nuclear@0: 			}
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: 	else if (MappingInformationType == "ByPolygonVertex" && ReferenceInformationType == "Direct") {	
nuclear@0: 		if (tempUV.size() != vertex_count) {
nuclear@0: 			FBXImporter::LogError(Formatter::format("length of input data unexpected for ByPolygon mapping: ") 
nuclear@0: 				<< tempUV.size() << ", expected " << vertex_count
nuclear@0: 			);
nuclear@0: 			return;
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		data_out.swap(tempUV);
nuclear@0: 	}
nuclear@0: 	else if (MappingInformationType == "ByPolygonVertex" && ReferenceInformationType == "IndexToDirect") {	
nuclear@0: 		data_out.resize(vertex_count);
nuclear@0: 
nuclear@0: 		std::vector<int> uvIndices;
nuclear@0: 		ParseVectorDataArray(uvIndices,GetRequiredElement(source,indexDataElementName));
nuclear@0: 
nuclear@0: 		if (uvIndices.size() != vertex_count) {
nuclear@0: 			FBXImporter::LogError("length of input data unexpected for ByPolygonVertex mapping");
nuclear@0: 			return;
nuclear@0: 		}
nuclear@0: 
nuclear@0: 		unsigned int next = 0;
nuclear@0: 		BOOST_FOREACH(int i, uvIndices) {
nuclear@0: 			if(static_cast<size_t>(i) >= tempUV.size()) {
nuclear@0: 				DOMError("index out of range",&GetRequiredElement(source,indexDataElementName));
nuclear@0: 			}
nuclear@0: 
nuclear@0: 			data_out[next++] = tempUV[i];
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: 	else {
nuclear@0: 		FBXImporter::LogError(Formatter::format("ignoring vertex data channel, access type not implemented: ") 
nuclear@0: 			<< MappingInformationType << "," << ReferenceInformationType);
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: // ------------------------------------------------------------------------------------------------
nuclear@0: void MeshGeometry::ReadVertexDataNormals(std::vector<aiVector3D>& normals_out, const Scope& source, 
nuclear@0: 	const std::string& MappingInformationType,
nuclear@0: 	const std::string& ReferenceInformationType)
nuclear@0: {
nuclear@0: 	ResolveVertexDataArray(normals_out,source,MappingInformationType,ReferenceInformationType,
nuclear@0: 		"Normals",
nuclear@0: 		"NormalsIndex",
nuclear@0: 		vertices.size(),
nuclear@0: 		mapping_counts,
nuclear@0: 		mapping_offsets,
nuclear@0: 		mappings);
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: // ------------------------------------------------------------------------------------------------
nuclear@0: void MeshGeometry::ReadVertexDataUV(std::vector<aiVector2D>& uv_out, const Scope& source, 
nuclear@0: 	const std::string& MappingInformationType,
nuclear@0: 	const std::string& ReferenceInformationType)
nuclear@0: {
nuclear@0: 	ResolveVertexDataArray(uv_out,source,MappingInformationType,ReferenceInformationType,
nuclear@0: 		"UV",
nuclear@0: 		"UVIndex",
nuclear@0: 		vertices.size(),
nuclear@0: 		mapping_counts,
nuclear@0: 		mapping_offsets,
nuclear@0: 		mappings);
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: // ------------------------------------------------------------------------------------------------
nuclear@0: void MeshGeometry::ReadVertexDataColors(std::vector<aiColor4D>& colors_out, const Scope& source, 
nuclear@0: 	const std::string& MappingInformationType,
nuclear@0: 	const std::string& ReferenceInformationType)
nuclear@0: {
nuclear@0: 	ResolveVertexDataArray(colors_out,source,MappingInformationType,ReferenceInformationType,
nuclear@0: 		"Colors",
nuclear@0: 		"ColorIndex",
nuclear@0: 		vertices.size(),
nuclear@0: 		mapping_counts,
nuclear@0: 		mapping_offsets,
nuclear@0: 		mappings);
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: // ------------------------------------------------------------------------------------------------
nuclear@0: void MeshGeometry::ReadVertexDataTangents(std::vector<aiVector3D>& tangents_out, const Scope& source, 
nuclear@0: 	const std::string& MappingInformationType,
nuclear@0: 	const std::string& ReferenceInformationType)
nuclear@0: {
nuclear@0: 	ResolveVertexDataArray(tangents_out,source,MappingInformationType,ReferenceInformationType,
nuclear@0: 		"Tangent",
nuclear@0: 		"TangentIndex",
nuclear@0: 		vertices.size(),
nuclear@0: 		mapping_counts,
nuclear@0: 		mapping_offsets,
nuclear@0: 		mappings);
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: // ------------------------------------------------------------------------------------------------
nuclear@0: void MeshGeometry::ReadVertexDataBinormals(std::vector<aiVector3D>& binormals_out, const Scope& source, 
nuclear@0: 	const std::string& MappingInformationType,
nuclear@0: 	const std::string& ReferenceInformationType)
nuclear@0: {
nuclear@0: 	ResolveVertexDataArray(binormals_out,source,MappingInformationType,ReferenceInformationType,
nuclear@0: 		"Binormal",
nuclear@0: 		"BinormalIndex",
nuclear@0: 		vertices.size(),
nuclear@0: 		mapping_counts,
nuclear@0: 		mapping_offsets,
nuclear@0: 		mappings);
nuclear@0: }
nuclear@0: 
nuclear@0: 
nuclear@0: // ------------------------------------------------------------------------------------------------
nuclear@0: void MeshGeometry::ReadVertexDataMaterials(std::vector<int>& materials_out, const Scope& source, 
nuclear@0: 	const std::string& MappingInformationType,
nuclear@0: 	const std::string& ReferenceInformationType)
nuclear@0: {
nuclear@0: 	const size_t face_count = faces.size();
nuclear@0: 	ai_assert(face_count);
nuclear@0: 
nuclear@0: 	// materials are handled separately. First of all, they are assigned per-face
nuclear@0: 	// and not per polyvert. Secondly, ReferenceInformationType=IndexToDirect
nuclear@0: 	// has a slightly different meaning for materials.
nuclear@0: 	ParseVectorDataArray(materials_out,GetRequiredElement(source,"Materials"));
nuclear@0: 
nuclear@0: 	if (MappingInformationType == "AllSame") {
nuclear@0: 		// easy - same material for all faces
nuclear@0: 		if (materials_out.empty()) {
nuclear@0: 			FBXImporter::LogError(Formatter::format("expected material index, ignoring"));
nuclear@0: 			return;
nuclear@0: 		}
nuclear@0: 		else if (materials_out.size() > 1) {
nuclear@0: 			FBXImporter::LogWarn(Formatter::format("expected only a single material index, ignoring all except the first one"));
nuclear@0: 			materials_out.clear();
nuclear@0: 		}
nuclear@0:  
nuclear@0: 		materials.assign(vertices.size(),materials_out[0]);
nuclear@0: 	}
nuclear@0: 	else if (MappingInformationType == "ByPolygon" && ReferenceInformationType == "IndexToDirect") {
nuclear@0: 		materials.resize(face_count);
nuclear@0: 
nuclear@0: 		if(materials_out.size() != face_count) {
nuclear@0: 			FBXImporter::LogError(Formatter::format("length of input data unexpected for ByPolygon mapping: ") 
nuclear@0: 				<< materials_out.size() << ", expected " << face_count
nuclear@0: 			);
nuclear@0: 			return;
nuclear@0: 		}
nuclear@0: 	}
nuclear@0: 	else {
nuclear@0: 		FBXImporter::LogError(Formatter::format("ignoring material assignments, access type not implemented: ") 
nuclear@0: 			<< MappingInformationType << "," << ReferenceInformationType);
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@0: } // !FBX
nuclear@0: } // !Assimp
nuclear@0: 
nuclear@0: #endif
nuclear@0: