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authorsanine <sanine.not@pm.me>2022-03-04 10:47:15 -0600
committersanine <sanine.not@pm.me>2022-03-04 10:47:15 -0600
commit058f98a63658dc1a2579826ba167fd61bed1e21f (patch)
treebcba07a1615a14d943f3af3f815a42f3be86b2f3 /src/mesh/assimp-master/code/Common/VertexTriangleAdjacency.h
parent2f8028ac9e0812cb6f3cbb08f0f419e4e717bd22 (diff)
add assimp submodule
Diffstat (limited to 'src/mesh/assimp-master/code/Common/VertexTriangleAdjacency.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 Defines a helper class to compute a vertex-triangle adjacency map */
+#ifndef AI_VTADJACENCY_H_INC
+#define AI_VTADJACENCY_H_INC
+
+#include "BaseProcess.h"
+#include <assimp/types.h>
+#include <assimp/ai_assert.h>
+
+struct aiMesh;
+struct aiFace;
+
+namespace Assimp {
+
+// --------------------------------------------------------------------------------------------
+/** @brief The VertexTriangleAdjacency class computes a vertex-triangle
+ * adjacency map from a given index buffer.
+ *
+ * @note Although it is called #VertexTriangleAdjacency, the current version does also
+ * support arbitrary polygons. */
+// --------------------------------------------------------------------------------------------
+class ASSIMP_API VertexTriangleAdjacency {
+public:
+ // ----------------------------------------------------------------------------
+ /** @brief Construction from an existing index buffer
+ * @param pcFaces Index buffer
+ * @param iNumFaces Number of faces in the buffer
+ * @param iNumVertices Number of referenced vertices. This value
+ * is computed automatically if 0 is specified.
+ * @param bComputeNumTriangles If you want the class to compute
+ * a list containing the number of referenced triangles per vertex
+ * per vertex - pass true. */
+ VertexTriangleAdjacency(aiFace* pcFaces,unsigned int iNumFaces,
+ unsigned int iNumVertices = 0,
+ bool bComputeNumTriangles = true);
+
+ // ----------------------------------------------------------------------------
+ /** @brief Destructor */
+ ~VertexTriangleAdjacency();
+
+ // ----------------------------------------------------------------------------
+ /** @brief Get all triangles adjacent to a vertex
+ * @param iVertIndex Index of the vertex
+ * @return A pointer to the adjacency list. */
+ unsigned int* GetAdjacentTriangles(unsigned int iVertIndex) const {
+ ai_assert(iVertIndex < mNumVertices);
+ return &mAdjacencyTable[ mOffsetTable[iVertIndex]];
+ }
+
+ // ----------------------------------------------------------------------------
+ /** @brief Get the number of triangles that are referenced by
+ * a vertex. This function returns a reference that can be modified
+ * @param iVertIndex Index of the vertex
+ * @return Number of referenced triangles */
+ unsigned int& GetNumTrianglesPtr(unsigned int iVertIndex) {
+ ai_assert( iVertIndex < mNumVertices );
+ ai_assert( nullptr != mLiveTriangles );
+ return mLiveTriangles[iVertIndex];
+ }
+
+ //! Offset table
+ unsigned int* mOffsetTable;
+
+ //! Adjacency table
+ unsigned int* mAdjacencyTable;
+
+ //! Table containing the number of referenced triangles per vertex
+ unsigned int* mLiveTriangles;
+
+ //! Debug: Number of referenced vertices
+ unsigned int mNumVertices;
+};
+
+} //! ns Assimp
+
+#endif // !! AI_VTADJACENCY_H_INC