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diff --git a/libs/assimp/code/AssetLib/Terragen/TerragenLoader.h b/libs/assimp/code/AssetLib/Terragen/TerragenLoader.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  TerragenLoader.h
+ *  @brief Declaration of the .ter importer class.
+ */
+#pragma once
+#ifndef INCLUDED_AI_TERRAGEN_TERRAIN_LOADER_H
+#define INCLUDED_AI_TERRAGEN_TERRAIN_LOADER_H
+
+#include <assimp/BaseImporter.h>
+
+namespace Assimp {
+
+// Magic strings
+#define AI_TERR_BASE_STRING "TERRAGEN"
+#define AI_TERR_TERRAIN_STRING "TERRAIN "
+#define AI_TERR_EOF_STRING "EOF "
+
+// Chunka
+#define AI_TERR_CHUNK_XPTS "XPTS"
+#define AI_TERR_CHUNK_YPTS "YPTS"
+#define AI_TERR_CHUNK_SIZE "SIZE"
+#define AI_TERR_CHUNK_SCAL "SCAL"
+#define AI_TERR_CHUNK_CRAD "CRAD"
+#define AI_TERR_CHUNK_CRVM "CRVM"
+#define AI_TERR_CHUNK_ALTW "ALTW"
+
+// ---------------------------------------------------------------------------
+/** @brief Importer class to load Terragen (0.9) terrain files.
+ *
+ *  The loader is basing on the information found here:
+ *  http://www.planetside.co.uk/terragen/dev/tgterrain.html#chunks
+*/
+class TerragenImporter : public BaseImporter {
+public:
+    TerragenImporter();
+    ~TerragenImporter() override;
+
+    // -------------------------------------------------------------------
+    bool CanRead(const std::string &pFile, IOSystem *pIOHandler,
+            bool checkSig) const override;
+
+protected:
+    // -------------------------------------------------------------------
+    const aiImporterDesc *GetInfo() const override;
+
+    // -------------------------------------------------------------------
+    void InternReadFile(const std::string &pFile, aiScene *pScene,
+            IOSystem *pIOHandler) override;
+
+    // -------------------------------------------------------------------
+    void SetupProperties(const Importer *pImp) override;
+
+private:
+    bool configComputeUVs;
+
+}; //! class TerragenImporter
+
+} // end of namespace Assimp
+
+#endif // AI_AC3DIMPORTER_H_INC