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+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2019, 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 FBXDConverter.h
+ * @brief FBX DOM to aiScene conversion
+ */
+#ifndef INCLUDED_AI_FBX_CONVERTER_H
+#define INCLUDED_AI_FBX_CONVERTER_H
+
+#include "FBXParser.h"
+#include "FBXMeshGeometry.h"
+#include "FBXDocument.h"
+#include "FBXUtil.h"
+#include "FBXProperties.h"
+#include "FBXImporter.h"
+
+#include <assimp/anim.h>
+#include <assimp/material.h>
+#include <assimp/light.h>
+#include <assimp/texture.h>
+#include <assimp/camera.h>
+#include <assimp/StringComparison.h>
+#include <unordered_map>
+#include <unordered_set>
+
+struct aiScene;
+struct aiNode;
+struct aiMaterial;
+
+struct morphKeyData {
+ std::vector<unsigned int> values;
+ std::vector<float> weights;
+};
+typedef std::map<int64_t, morphKeyData*> morphAnimData;
+
+namespace Assimp {
+namespace FBX {
+
+class Document;
+
+enum class FbxUnit {
+ cm = 0,
+ m,
+ km,
+ NumUnits,
+
+ Undefined
+};
+
+/**
+ * Convert a FBX #Document to #aiScene
+ * @param out Empty scene to be populated
+ * @param doc Parsed FBX document
+ * @param removeEmptyBones Will remove bones, which do not have any references to vertices.
+ */
+void ConvertToAssimpScene(aiScene* out, const Document& doc, bool removeEmptyBones);
+
+/** Dummy class to encapsulate the conversion process */
+class FBXConverter {
+public:
+ /**
+ * The different parts that make up the final local transformation of a fbx-node
+ */
+ enum TransformationComp {
+ TransformationComp_GeometricScalingInverse = 0,
+ TransformationComp_GeometricRotationInverse,
+ TransformationComp_GeometricTranslationInverse,
+ TransformationComp_Translation,
+ TransformationComp_RotationOffset,
+ TransformationComp_RotationPivot,
+ TransformationComp_PreRotation,
+ TransformationComp_Rotation,
+ TransformationComp_PostRotation,
+ TransformationComp_RotationPivotInverse,
+ TransformationComp_ScalingOffset,
+ TransformationComp_ScalingPivot,
+ TransformationComp_Scaling,
+ TransformationComp_ScalingPivotInverse,
+ TransformationComp_GeometricTranslation,
+ TransformationComp_GeometricRotation,
+ TransformationComp_GeometricScaling,
+
+ TransformationComp_MAXIMUM
+ };
+
+public:
+ FBXConverter(aiScene* out, const Document& doc, bool removeEmptyBones);
+ ~FBXConverter();
+
+private:
+ // ------------------------------------------------------------------------------------------------
+ // find scene root and trigger recursive scene conversion
+ void ConvertRootNode();
+
+ // ------------------------------------------------------------------------------------------------
+ // collect and assign child nodes
+ void ConvertNodes(uint64_t id, aiNode& parent, const aiMatrix4x4& parent_transform = aiMatrix4x4());
+
+ // ------------------------------------------------------------------------------------------------
+ void ConvertLights(const Model& model, const std::string &orig_name );
+
+ // ------------------------------------------------------------------------------------------------
+ void ConvertCameras(const Model& model, const std::string &orig_name );
+
+ // ------------------------------------------------------------------------------------------------
+ void ConvertLight( const Light& light, const std::string &orig_name );
+
+ // ------------------------------------------------------------------------------------------------
+ void ConvertCamera( const Camera& cam, const std::string &orig_name );
+
+ // ------------------------------------------------------------------------------------------------
+ void GetUniqueName( const std::string &name, std::string& uniqueName );
+
+ // ------------------------------------------------------------------------------------------------
+ // this returns unified names usable within assimp identifiers (i.e. no space characters -
+ // while these would be allowed, they are a potential trouble spot so better not use them).
+ const char* NameTransformationComp(TransformationComp comp);
+
+ // ------------------------------------------------------------------------------------------------
+ // Returns an unique name for a node or traverses up a hierarchy until a non-empty name is found and
+ // then makes this name unique
+ std::string MakeUniqueNodeName(const Model* const model, const aiNode& parent);
+
+ // ------------------------------------------------------------------------------------------------
+ // note: this returns the REAL fbx property names
+ const char* NameTransformationCompProperty(TransformationComp comp);
+
+ // ------------------------------------------------------------------------------------------------
+ aiVector3D TransformationCompDefaultValue(TransformationComp comp);
+
+ // ------------------------------------------------------------------------------------------------
+ void GetRotationMatrix(Model::RotOrder mode, const aiVector3D& rotation, aiMatrix4x4& out);
+ // ------------------------------------------------------------------------------------------------
+ /**
+ * checks if a node has more than just scaling, rotation and translation components
+ */
+ bool NeedsComplexTransformationChain(const Model& model);
+
+ // ------------------------------------------------------------------------------------------------
+ // note: name must be a FixNodeName() result
+ std::string NameTransformationChainNode(const std::string& name, TransformationComp comp);
+
+ // ------------------------------------------------------------------------------------------------
+ /**
+ * note: memory for output_nodes will be managed by the caller
+ */
+ bool GenerateTransformationNodeChain(const Model& model, const std::string& name, std::vector<aiNode*>& output_nodes, std::vector<aiNode*>& post_output_nodes);
+
+ // ------------------------------------------------------------------------------------------------
+ void SetupNodeMetadata(const Model& model, aiNode& nd);
+
+ // ------------------------------------------------------------------------------------------------
+ void ConvertModel(const Model& model, aiNode& nd, const aiMatrix4x4& node_global_transform);
+
+ // ------------------------------------------------------------------------------------------------
+ // MeshGeometry -> aiMesh, return mesh index + 1 or 0 if the conversion failed
+ std::vector<unsigned int> ConvertMesh(const MeshGeometry& mesh, const Model& model,
+ const aiMatrix4x4& node_global_transform, aiNode& nd);
+
+ // ------------------------------------------------------------------------------------------------
+ std::vector<unsigned int> ConvertLine(const LineGeometry& line, const Model& model,
+ const aiMatrix4x4& node_global_transform, aiNode& nd);
+
+ // ------------------------------------------------------------------------------------------------
+ aiMesh* SetupEmptyMesh(const Geometry& mesh, aiNode& nd);
+
+ // ------------------------------------------------------------------------------------------------
+ unsigned int ConvertMeshSingleMaterial(const MeshGeometry& mesh, const Model& model,
+ const aiMatrix4x4& node_global_transform, aiNode& nd);
+
+ // ------------------------------------------------------------------------------------------------
+ std::vector<unsigned int> ConvertMeshMultiMaterial(const MeshGeometry& mesh, const Model& model,
+ const aiMatrix4x4& node_global_transform, aiNode& nd);
+
+ // ------------------------------------------------------------------------------------------------
+ unsigned int ConvertMeshMultiMaterial(const MeshGeometry& mesh, const Model& model,
+ MatIndexArray::value_type index,
+ const aiMatrix4x4& node_global_transform, aiNode& nd);
+
+ // ------------------------------------------------------------------------------------------------
+ static const unsigned int NO_MATERIAL_SEPARATION = /* std::numeric_limits<unsigned int>::max() */
+ static_cast<unsigned int>(-1);
+
+ // ------------------------------------------------------------------------------------------------
+ /**
+ * - if materialIndex == NO_MATERIAL_SEPARATION, materials are not taken into
+ * account when determining which weights to include.
+ * - outputVertStartIndices is only used when a material index is specified, it gives for
+ * each output vertex the DOM index it maps to.
+ */
+ void ConvertWeights(aiMesh* out, const Model& model, const MeshGeometry& geo,
+ const aiMatrix4x4& node_global_transform = aiMatrix4x4(),
+ unsigned int materialIndex = NO_MATERIAL_SEPARATION,
+ std::vector<unsigned int>* outputVertStartIndices = NULL);
+
+ // ------------------------------------------------------------------------------------------------
+ void ConvertCluster(std::vector<aiBone*>& bones, const Model& /*model*/, const Cluster& cl,
+ std::vector<size_t>& out_indices,
+ std::vector<size_t>& index_out_indices,
+ std::vector<size_t>& count_out_indices,
+ const aiMatrix4x4& node_global_transform);
+
+ // ------------------------------------------------------------------------------------------------
+ void ConvertMaterialForMesh(aiMesh* out, const Model& model, const MeshGeometry& geo,
+ MatIndexArray::value_type materialIndex);
+
+ // ------------------------------------------------------------------------------------------------
+ unsigned int GetDefaultMaterial();
+
+ // ------------------------------------------------------------------------------------------------
+ // Material -> aiMaterial
+ unsigned int ConvertMaterial(const Material& material, const MeshGeometry* const mesh);
+
+ // ------------------------------------------------------------------------------------------------
+ // Video -> aiTexture
+ unsigned int ConvertVideo(const Video& video);
+
+ // ------------------------------------------------------------------------------------------------
+ // convert embedded texture if necessary and return actual texture path
+ aiString GetTexturePath(const Texture* tex);
+
+ // ------------------------------------------------------------------------------------------------
+ void TrySetTextureProperties(aiMaterial* out_mat, const TextureMap& textures,
+ const std::string& propName,
+ aiTextureType target, const MeshGeometry* const mesh);
+
+ // ------------------------------------------------------------------------------------------------
+ void TrySetTextureProperties(aiMaterial* out_mat, const LayeredTextureMap& layeredTextures,
+ const std::string& propName,
+ aiTextureType target, const MeshGeometry* const mesh);
+
+ // ------------------------------------------------------------------------------------------------
+ void SetTextureProperties(aiMaterial* out_mat, const TextureMap& textures, const MeshGeometry* const mesh);
+
+ // ------------------------------------------------------------------------------------------------
+ void SetTextureProperties(aiMaterial* out_mat, const LayeredTextureMap& layeredTextures, const MeshGeometry* const mesh);
+
+ // ------------------------------------------------------------------------------------------------
+ aiColor3D GetColorPropertyFromMaterial(const PropertyTable& props, const std::string& baseName,
+ bool& result);
+ aiColor3D GetColorPropertyFactored(const PropertyTable& props, const std::string& colorName,
+ const std::string& factorName, bool& result, bool useTemplate = true);
+ aiColor3D GetColorProperty(const PropertyTable& props, const std::string& colorName,
+ bool& result, bool useTemplate = true);
+
+ // ------------------------------------------------------------------------------------------------
+ void SetShadingPropertiesCommon(aiMaterial* out_mat, const PropertyTable& props);
+ void SetShadingPropertiesRaw(aiMaterial* out_mat, const PropertyTable& props, const TextureMap& textures, const MeshGeometry* const mesh);
+
+ // ------------------------------------------------------------------------------------------------
+ // get the number of fps for a FrameRate enumerated value
+ static double FrameRateToDouble(FileGlobalSettings::FrameRate fp, double customFPSVal = -1.0);
+
+ // ------------------------------------------------------------------------------------------------
+ // convert animation data to aiAnimation et al
+ void ConvertAnimations();
+
+ // ------------------------------------------------------------------------------------------------
+ // takes a fbx node name and returns the identifier to be used in the assimp output scene.
+ // the function is guaranteed to provide consistent results over multiple invocations
+ // UNLESS RenameNode() is called for a particular node name.
+ std::string FixNodeName(const std::string& name);
+ std::string FixAnimMeshName(const std::string& name);
+
+ typedef std::map<const AnimationCurveNode*, const AnimationLayer*> LayerMap;
+
+ // XXX: better use multi_map ..
+ typedef std::map<std::string, std::vector<const AnimationCurveNode*> > NodeMap;
+
+ // ------------------------------------------------------------------------------------------------
+ void ConvertAnimationStack(const AnimationStack& st);
+
+ // ------------------------------------------------------------------------------------------------
+ void ProcessMorphAnimDatas(std::map<std::string, morphAnimData*>* morphAnimDatas, const BlendShapeChannel* bsc, const AnimationCurveNode* node);
+
+ // ------------------------------------------------------------------------------------------------
+ void GenerateNodeAnimations(std::vector<aiNodeAnim*>& node_anims,
+ const std::string& fixed_name,
+ const std::vector<const AnimationCurveNode*>& curves,
+ const LayerMap& layer_map,
+ int64_t start, int64_t stop,
+ double& max_time,
+ double& min_time);
+
+ // ------------------------------------------------------------------------------------------------
+ bool IsRedundantAnimationData(const Model& target,
+ TransformationComp comp,
+ const std::vector<const AnimationCurveNode*>& curves);
+
+ // ------------------------------------------------------------------------------------------------
+ aiNodeAnim* GenerateRotationNodeAnim(const std::string& name,
+ const Model& target,
+ const std::vector<const AnimationCurveNode*>& curves,
+ const LayerMap& layer_map,
+ int64_t start, int64_t stop,
+ double& max_time,
+ double& min_time);
+
+ // ------------------------------------------------------------------------------------------------
+ aiNodeAnim* GenerateScalingNodeAnim(const std::string& name,
+ const Model& /*target*/,
+ const std::vector<const AnimationCurveNode*>& curves,
+ const LayerMap& layer_map,
+ int64_t start, int64_t stop,
+ double& max_time,
+ double& min_time);
+
+ // ------------------------------------------------------------------------------------------------
+ aiNodeAnim* GenerateTranslationNodeAnim(const std::string& name,
+ const Model& /*target*/,
+ const std::vector<const AnimationCurveNode*>& curves,
+ const LayerMap& layer_map,
+ int64_t start, int64_t stop,
+ double& max_time,
+ double& min_time,
+ bool inverse = false);
+
+ // ------------------------------------------------------------------------------------------------
+ // generate node anim, extracting only Rotation, Scaling and Translation from the given chain
+ aiNodeAnim* GenerateSimpleNodeAnim(const std::string& name,
+ const Model& target,
+ NodeMap::const_iterator chain[TransformationComp_MAXIMUM],
+ NodeMap::const_iterator iter_end,
+ const LayerMap& layer_map,
+ int64_t start, int64_t stop,
+ double& max_time,
+ double& min_time,
+ bool reverse_order = false);
+
+ // key (time), value, mapto (component index)
+ typedef std::tuple<std::shared_ptr<KeyTimeList>, std::shared_ptr<KeyValueList>, unsigned int > KeyFrameList;
+ typedef std::vector<KeyFrameList> KeyFrameListList;
+
+ // ------------------------------------------------------------------------------------------------
+ KeyFrameListList GetKeyframeList(const std::vector<const AnimationCurveNode*>& nodes, int64_t start, int64_t stop);
+
+ // ------------------------------------------------------------------------------------------------
+ KeyTimeList GetKeyTimeList(const KeyFrameListList& inputs);
+
+ // ------------------------------------------------------------------------------------------------
+ void InterpolateKeys(aiVectorKey* valOut, const KeyTimeList& keys, const KeyFrameListList& inputs,
+ const aiVector3D& def_value,
+ double& max_time,
+ double& min_time);
+
+ // ------------------------------------------------------------------------------------------------
+ void InterpolateKeys(aiQuatKey* valOut, const KeyTimeList& keys, const KeyFrameListList& inputs,
+ const aiVector3D& def_value,
+ double& maxTime,
+ double& minTime,
+ Model::RotOrder order);
+
+ // ------------------------------------------------------------------------------------------------
+ void ConvertTransformOrder_TRStoSRT(aiQuatKey* out_quat, aiVectorKey* out_scale,
+ aiVectorKey* out_translation,
+ const KeyFrameListList& scaling,
+ const KeyFrameListList& translation,
+ const KeyFrameListList& rotation,
+ const KeyTimeList& times,
+ double& maxTime,
+ double& minTime,
+ Model::RotOrder order,
+ const aiVector3D& def_scale,
+ const aiVector3D& def_translate,
+ const aiVector3D& def_rotation);
+
+ // ------------------------------------------------------------------------------------------------
+ // euler xyz -> quat
+ aiQuaternion EulerToQuaternion(const aiVector3D& rot, Model::RotOrder order);
+
+ // ------------------------------------------------------------------------------------------------
+ void ConvertScaleKeys(aiNodeAnim* na, const std::vector<const AnimationCurveNode*>& nodes, const LayerMap& /*layers*/,
+ int64_t start, int64_t stop,
+ double& maxTime,
+ double& minTime);
+
+ // ------------------------------------------------------------------------------------------------
+ void ConvertTranslationKeys(aiNodeAnim* na, const std::vector<const AnimationCurveNode*>& nodes,
+ const LayerMap& /*layers*/,
+ int64_t start, int64_t stop,
+ double& maxTime,
+ double& minTime);
+
+ // ------------------------------------------------------------------------------------------------
+ void ConvertRotationKeys(aiNodeAnim* na, const std::vector<const AnimationCurveNode*>& nodes,
+ const LayerMap& /*layers*/,
+ int64_t start, int64_t stop,
+ double& maxTime,
+ double& minTime,
+ Model::RotOrder order);
+
+ void ConvertGlobalSettings();
+
+ // ------------------------------------------------------------------------------------------------
+ // copy generated meshes, animations, lights, cameras and textures to the output scene
+ void TransferDataToScene();
+
+private:
+ // 0: not assigned yet, others: index is value - 1
+ unsigned int defaultMaterialIndex;
+
+ std::vector<aiMesh*> meshes;
+ std::vector<aiMaterial*> materials;
+ std::vector<aiAnimation*> animations;
+ std::vector<aiLight*> lights;
+ std::vector<aiCamera*> cameras;
+ std::vector<aiTexture*> textures;
+
+ using MaterialMap = std::map<const Material*, unsigned int>;
+ MaterialMap materials_converted;
+
+ using VideoMap = std::map<const Video*, unsigned int>;
+ VideoMap textures_converted;
+
+ using MeshMap = std::map<const Geometry*, std::vector<unsigned int> >;
+ MeshMap meshes_converted;
+
+ // fixed node name -> which trafo chain components have animations?
+ using NodeAnimBitMap = std::map<std::string, unsigned int> ;
+ NodeAnimBitMap node_anim_chain_bits;
+
+ // number of nodes with the same name
+ using NodeNameCache = std::unordered_map<std::string, unsigned int>;
+ NodeNameCache mNodeNames;
+
+ double anim_fps;
+
+ aiScene* const out;
+ const FBX::Document& doc;
+ FbxUnit mCurrentUnit;
+};
+
+}
+}
+
+#endif // INCLUDED_AI_FBX_CONVERTER_H
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