179 lines
6.4 KiB
C++
179 lines
6.4 KiB
C++
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/*
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Open Asset Import Library (assimp)
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----------------------------------------------------------------------
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Copyright (c) 2006-2019, assimp team
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All rights reserved.
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the
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following conditions are met:
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* Redistributions of source code must retain the above
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copyright notice, this list of conditions and the
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following disclaimer.
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* Redistributions in binary form must reproduce the above
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copyright notice, this list of conditions and the
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following disclaimer in the documentation and/or other
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materials provided with the distribution.
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* Neither the name of the assimp team, nor the names of its
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contributors may be used to endorse or promote products
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derived from this software without specific prior
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written permission of the assimp team.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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----------------------------------------------------------------------
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*/
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/** @file FBXExporter.h
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* Declares the exporter class to write a scene to an fbx file
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*/
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#ifndef AI_FBXEXPORTER_H_INC
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#define AI_FBXEXPORTER_H_INC
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#ifndef ASSIMP_BUILD_NO_FBX_EXPORTER
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#include "FBXExportNode.h" // FBX::Node
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#include "FBXCommon.h" // FBX::TransformInheritance
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#include <assimp/types.h>
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//#include <assimp/material.h>
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#include <assimp/StreamWriter.h> // StreamWriterLE
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#include <assimp/Exceptional.h> // DeadlyExportError
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#include <vector>
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#include <map>
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#include <unordered_set>
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#include <memory> // shared_ptr
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#include <sstream> // stringstream
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struct aiScene;
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struct aiNode;
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//struct aiMaterial;
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namespace Assimp
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{
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class IOSystem;
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class IOStream;
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class ExportProperties;
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// ---------------------------------------------------------------------
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/** Helper class to export a given scene to an FBX file. */
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// ---------------------------------------------------------------------
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class FBXExporter
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{
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public:
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/// Constructor for a specific scene to export
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FBXExporter(const aiScene* pScene, const ExportProperties* pProperties);
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// call one of these methods to export
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void ExportBinary(const char* pFile, IOSystem* pIOSystem);
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void ExportAscii(const char* pFile, IOSystem* pIOSystem);
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private:
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bool binary; // whether current export is in binary or ascii format
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const aiScene* mScene; // the scene to export
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const ExportProperties* mProperties; // currently unused
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std::shared_ptr<IOStream> outfile; // file to write to
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std::vector<FBX::Node> connections; // connection storage
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std::vector<int64_t> mesh_uids;
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std::vector<int64_t> material_uids;
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std::map<const aiNode*,int64_t> node_uids;
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// this crude unique-ID system is actually fine
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int64_t last_uid = 999999;
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int64_t generate_uid() { return ++last_uid; }
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// binary files have a specific header and footer,
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// in addition to the actual data
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void WriteBinaryHeader();
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void WriteBinaryFooter();
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// ascii files have a comment at the top
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void WriteAsciiHeader();
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// WriteAllNodes does the actual export.
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// It just calls all the Write<Section> methods below in order.
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void WriteAllNodes();
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// Methods to write individual sections.
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// The order here matches the order inside an FBX file.
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// Each method corresponds to a top-level FBX section,
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// except WriteHeader which also includes some binary-only sections
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// and WriteFooter which is binary data only.
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void WriteHeaderExtension();
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// WriteFileId(); // binary-only, included in WriteHeader
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// WriteCreationTime(); // binary-only, included in WriteHeader
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// WriteCreator(); // binary-only, included in WriteHeader
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void WriteGlobalSettings();
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void WriteDocuments();
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void WriteReferences();
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void WriteDefinitions();
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void WriteObjects();
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void WriteConnections();
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// WriteTakes(); // deprecated since at least 2015 (fbx 7.4)
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// helpers
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void WriteAsciiSectionHeader(const std::string& title);
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void WriteModelNodes(
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Assimp::StreamWriterLE& s,
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const aiNode* node,
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int64_t parent_uid,
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const std::unordered_set<const aiNode*>& limbnodes
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);
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void WriteModelNodes( // usually don't call this directly
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StreamWriterLE& s,
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const aiNode* node,
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int64_t parent_uid,
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const std::unordered_set<const aiNode*>& limbnodes,
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std::vector<std::pair<std::string,aiVector3D>>& transform_chain
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);
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void WriteModelNode( // nor this
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StreamWriterLE& s,
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bool binary,
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const aiNode* node,
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int64_t node_uid,
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const std::string& type,
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const std::vector<std::pair<std::string,aiVector3D>>& xfm_chain,
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FBX::TransformInheritance ti_type=FBX::TransformInheritance_RSrs
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);
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void WriteAnimationCurveNode(
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StreamWriterLE& outstream,
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int64_t uid,
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std::string name, // "T", "R", or "S"
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aiVector3D default_value,
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std::string property_name, // "Lcl Translation" etc
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int64_t animation_layer_uid,
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int64_t node_uid
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);
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void WriteAnimationCurve(
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StreamWriterLE& outstream,
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double default_value,
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const std::vector<int64_t>& times,
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const std::vector<float>& values,
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int64_t curvenode_id,
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const std::string& property_link // "d|X", "d|Y", etc
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);
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};
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}
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#endif // ASSIMP_BUILD_NO_FBX_EXPORTER
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#endif // AI_FBXEXPORTER_H_INC
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