1 files changed, 163 insertions, 0 deletions
diff --git a/thirdparty/assimp/code/PretransformVertices.h b/thirdparty/assimp/code/PretransformVertices.h
new file mode 100644
index 0000000000..b7329af130
--- /dev/null
+++ b/thirdparty/assimp/code/PretransformVertices.h
@@ -0,0 +1,163 @@
+/*
+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 PretransformVertices.h
+ *  @brief Defines a post processing step to pretransform all
+ *    vertices in the scenegraph
+ */
+#ifndef AI_PRETRANSFORMVERTICES_H_INC
+#define AI_PRETRANSFORMVERTICES_H_INC
+
+#include "BaseProcess.h"
+#include <assimp/mesh.h>
+#include <list>
+#include <vector>
+
+struct aiNode;
+class PretransformVerticesTest;
+namespace Assimp    {
+
+// ---------------------------------------------------------------------------
+/** The PretransformVertices pre-transforms all vertices in the node tree
+ *  and removes the whole graph. The output is a list of meshes, one for
+ *  each material.
+*/
+class ASSIMP_API PretransformVertices : public BaseProcess {
+public:
+    PretransformVertices ();
+    ~PretransformVertices ();
+
+    // -------------------------------------------------------------------
+    // Check whether step is active
+    bool IsActive( unsigned int pFlags) const;
+
+    // -------------------------------------------------------------------
+    // Execute step on a given scene
+    void Execute( aiScene* pScene);
+
+    // -------------------------------------------------------------------
+    // Setup import settings
+    void SetupProperties(const Importer* pImp);
+
+    // -------------------------------------------------------------------
+    /** @brief Toggle the 'keep hierarchy' option
+     *  @param d hm ... difficult to guess what this means, hu!?
+     */
+    void KeepHierarchy(bool d) {
+        configKeepHierarchy = d;
+    }
+
+    // -------------------------------------------------------------------
+    /** @brief Check whether 'keep hierarchy' is currently enabled.
+     *  @return ...
+     */
+    bool IsHierarchyKept() const {
+        return configKeepHierarchy;
+    }
+
+private:
+    // -------------------------------------------------------------------
+    // Count the number of nodes
+    unsigned int CountNodes( aiNode* pcNode );
+
+    // -------------------------------------------------------------------
+    // Get a bitwise combination identifying the vertex format of a mesh
+    unsigned int GetMeshVFormat(aiMesh* pcMesh);
+
+    // -------------------------------------------------------------------
+    // Count the number of vertices in the whole scene and a given
+    // material index
+    void CountVerticesAndFaces( aiScene* pcScene, aiNode* pcNode,
+        unsigned int iMat,
+        unsigned int iVFormat,
+        unsigned int* piFaces,
+        unsigned int* piVertices);
+
+    // -------------------------------------------------------------------
+    // Collect vertex/face data
+    void CollectData( aiScene* pcScene, aiNode* pcNode,
+        unsigned int iMat,
+        unsigned int iVFormat,
+        aiMesh* pcMeshOut,
+        unsigned int aiCurrent[2],
+        unsigned int* num_refs);
+
+    // -------------------------------------------------------------------
+    // Get a list of all vertex formats that occur for a given material
+    // The output list contains duplicate elements
+    void GetVFormatList( aiScene* pcScene, unsigned int iMat,
+        std::list<unsigned int>& aiOut);
+
+    // -------------------------------------------------------------------
+    // Compute the absolute transformation matrices of each node
+    void ComputeAbsoluteTransform( aiNode* pcNode );
+
+    // -------------------------------------------------------------------
+    // Simple routine to build meshes in worldspace, no further optimization
+    void BuildWCSMeshes(std::vector<aiMesh*>& out, aiMesh** in,
+        unsigned int numIn, aiNode* node);
+
+    // -------------------------------------------------------------------
+    // Apply the node transformation to a mesh
+    void ApplyTransform(aiMesh* mesh, const aiMatrix4x4& mat);
+
+    // -------------------------------------------------------------------
+    // Reset transformation matrices to identity
+    void MakeIdentityTransform(aiNode* nd);
+
+    // -------------------------------------------------------------------
+    // Build reference counters for all meshes
+    void BuildMeshRefCountArray(aiNode* nd, unsigned int * refs);
+
+
+
+    //! Configuration option: keep scene hierarchy as long as possible
+    bool configKeepHierarchy;
+    bool configNormalize;
+    bool configTransform;
+    aiMatrix4x4 configTransformation;
+    bool mConfigPointCloud;
+};
+
+} // end of namespace Assimp
+
+#endif // !!AI_GENFACENORMALPROCESS_H_INC