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diff --git a/src/mesh/assimp-master/code/AssetLib/glTF/glTFExporter.h b/src/mesh/assimp-master/code/AssetLib/glTF/glTFExporter.h
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+/*
+Open Asset Import Library (assimp)
+----------------------------------------------------------------------
+
+Copyright (c) 2006-2022, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the
+following conditions are met:
+
+* Redistributions of source code must retain the above
+copyright notice, this list of conditions and the
+following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the
+following disclaimer in the documentation and/or other
+materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+contributors may be used to endorse or promote products
+derived from this software without specific prior
+written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+*/
+
+/** @file GltfExporter.h
+ * Declares the exporter class to write a scene to a gltf/glb file
+ */
+#pragma once
+#ifndef AI_GLTFEXPORTER_H_INC
+#define AI_GLTFEXPORTER_H_INC
+
+#if !defined(ASSIMP_BUILD_NO_GLTF_EXPORTER) && !defined(ASSIMP_BUILD_NO_GLTF1_EXPORTER)
+
+#include <assimp/material.h>
+#include <assimp/types.h>
+
+#include <map>
+#include <memory>
+#include <sstream>
+#include <vector>
+
+struct aiScene;
+struct aiNode;
+
+namespace glTFCommon {
+template <class T>
+class Ref;
+
+}
+
+namespace glTF {
+class Asset;
+struct TexProperty;
+struct Node;
+
+} // namespace glTF
+
+namespace Assimp {
+class IOSystem;
+class IOStream;
+class ExportProperties;
+
+// ------------------------------------------------------------------------------------------------
+/** Helper class to export a given scene to an glTF file. */
+// ------------------------------------------------------------------------------------------------
+class glTFExporter {
+public:
+    /// Constructor for a specific scene to export
+    glTFExporter(const char *filename, IOSystem *pIOSystem, const aiScene *pScene,
+            const ExportProperties *pProperties, bool binary);
+
+private:
+    const char *mFilename;
+    IOSystem *mIOSystem;
+    std::shared_ptr<const aiScene> mScene;
+    const ExportProperties *mProperties;
+
+    std::map<std::string, unsigned int> mTexturesByPath;
+
+    std::shared_ptr<glTF::Asset> mAsset;
+
+    std::vector<unsigned char> mBodyData;
+
+    void WriteBinaryData(IOStream *outfile, std::size_t sceneLength);
+
+    void GetTexSampler(const aiMaterial *mat, glTF::TexProperty &prop);
+    void GetMatColorOrTex(const aiMaterial *mat, glTF::TexProperty &prop, const char *propName, int type, int idx, aiTextureType tt);
+    void ExportMetadata();
+    void ExportMaterials();
+    void ExportMeshes();
+    unsigned int ExportNodeHierarchy(const aiNode *n);
+    unsigned int ExportNode(const aiNode *node, glTFCommon::Ref<glTF::Node> & parent);
+    void ExportScene();
+    void ExportAnimations();
+};
+
+} // namespace Assimp
+
+#endif // ASSIMP_BUILD_NO_GLTF_EXPORTER
+
+#endif // AI_GLTFEXPORTER_H_INC