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annotate libs/assimp/VertexTriangleAdjacency.h @ 0:b2f14e535253

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author John Tsiombikas <nuclear@member.fsf.org>
date Sat, 01 Feb 2014 19:58:19 +0200
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nuclear@0 1 /*
nuclear@0 2 Open Asset Import Library (assimp)
nuclear@0 3 ----------------------------------------------------------------------
nuclear@0 4
nuclear@0 5 Copyright (c) 2006-2012, assimp team
nuclear@0 6 All rights reserved.
nuclear@0 7
nuclear@0 8 Redistribution and use of this software in source and binary forms,
nuclear@0 9 with or without modification, are permitted provided that the
nuclear@0 10 following conditions are met:
nuclear@0 11
nuclear@0 12 * Redistributions of source code must retain the above
nuclear@0 13 copyright notice, this list of conditions and the
nuclear@0 14 following disclaimer.
nuclear@0 15
nuclear@0 16 * Redistributions in binary form must reproduce the above
nuclear@0 17 copyright notice, this list of conditions and the
nuclear@0 18 following disclaimer in the documentation and/or other
nuclear@0 19 materials provided with the distribution.
nuclear@0 20
nuclear@0 21 * Neither the name of the assimp team, nor the names of its
nuclear@0 22 contributors may be used to endorse or promote products
nuclear@0 23 derived from this software without specific prior
nuclear@0 24 written permission of the assimp team.
nuclear@0 25
nuclear@0 26 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
nuclear@0 27 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
nuclear@0 28 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
nuclear@0 29 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
nuclear@0 30 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
nuclear@0 31 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
nuclear@0 32 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
nuclear@0 33 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
nuclear@0 34 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
nuclear@0 35 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
nuclear@0 36 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
nuclear@0 37
nuclear@0 38 ----------------------------------------------------------------------
nuclear@0 39 */
nuclear@0 40
nuclear@0 41 /** @file Defines a helper class to compute a vertex-triangle adjacency map */
nuclear@0 42 #ifndef AI_VTADJACENCY_H_INC
nuclear@0 43 #define AI_VTADJACENCY_H_INC
nuclear@0 44
nuclear@0 45 #include "BaseProcess.h"
nuclear@0 46 #include "assimp/types.h"
nuclear@0 47 #include "assimp/ai_assert.h"
nuclear@0 48
nuclear@0 49 struct aiMesh;
nuclear@0 50 namespace Assimp {
nuclear@0 51
nuclear@0 52 // --------------------------------------------------------------------------------------------
nuclear@0 53 /** @brief The VertexTriangleAdjacency class computes a vertex-triangle
nuclear@0 54 * adjacency map from a given index buffer.
nuclear@0 55 *
nuclear@0 56 * @note Although it is called #VertexTriangleAdjacency, the current version does also
nuclear@0 57 * support arbitrary polygons. */
nuclear@0 58 // --------------------------------------------------------------------------------------------
nuclear@0 59 class VertexTriangleAdjacency
nuclear@0 60 {
nuclear@0 61 public:
nuclear@0 62
nuclear@0 63 // ----------------------------------------------------------------------------
nuclear@0 64 /** @brief Construction from an existing index buffer
nuclear@0 65 * @param pcFaces Index buffer
nuclear@0 66 * @param iNumFaces Number of faces in the buffer
nuclear@0 67 * @param iNumVertices Number of referenced vertices. This value
nuclear@0 68 * is computed automatically if 0 is specified.
nuclear@0 69 * @param bComputeNumTriangles If you want the class to compute
nuclear@0 70 * a list containing the number of referenced triangles per vertex
nuclear@0 71 * per vertex - pass true. */
nuclear@0 72 VertexTriangleAdjacency(aiFace* pcFaces,unsigned int iNumFaces,
nuclear@0 73 unsigned int iNumVertices = 0,
nuclear@0 74 bool bComputeNumTriangles = true);
nuclear@0 75
nuclear@0 76
nuclear@0 77 // ----------------------------------------------------------------------------
nuclear@0 78 /** @brief Destructor */
nuclear@0 79 ~VertexTriangleAdjacency();
nuclear@0 80
nuclear@0 81
nuclear@0 82 public:
nuclear@0 83
nuclear@0 84 // ----------------------------------------------------------------------------
nuclear@0 85 /** @brief Get all triangles adjacent to a vertex
nuclear@0 86 * @param iVertIndex Index of the vertex
nuclear@0 87 * @return A pointer to the adjacency list. */
nuclear@0 88 unsigned int* GetAdjacentTriangles(unsigned int iVertIndex) const
nuclear@0 89 {
nuclear@0 90 ai_assert(iVertIndex < iNumVertices);
nuclear@0 91 return &mAdjacencyTable[ mOffsetTable[iVertIndex]];
nuclear@0 92 }
nuclear@0 93
nuclear@0 94
nuclear@0 95 // ----------------------------------------------------------------------------
nuclear@0 96 /** @brief Get the number of triangles that are referenced by
nuclear@0 97 * a vertex. This function returns a reference that can be modified
nuclear@0 98 * @param iVertIndex Index of the vertex
nuclear@0 99 * @return Number of referenced triangles */
nuclear@0 100 unsigned int& GetNumTrianglesPtr(unsigned int iVertIndex)
nuclear@0 101 {
nuclear@0 102 ai_assert(iVertIndex < iNumVertices && NULL != mLiveTriangles);
nuclear@0 103 return mLiveTriangles[iVertIndex];
nuclear@0 104 }
nuclear@0 105
nuclear@0 106
nuclear@0 107 public:
nuclear@0 108
nuclear@0 109 //! Offset table
nuclear@0 110 unsigned int* mOffsetTable;
nuclear@0 111
nuclear@0 112 //! Adjacency table
nuclear@0 113 unsigned int* mAdjacencyTable;
nuclear@0 114
nuclear@0 115 //! Table containing the number of referenced triangles per vertex
nuclear@0 116 unsigned int* mLiveTriangles;
nuclear@0 117
nuclear@0 118 //! Debug: Number of referenced vertices
nuclear@0 119 unsigned int iNumVertices;
nuclear@0 120
nuclear@0 121 };
nuclear@0 122 }
nuclear@0 123
nuclear@0 124 #endif // !! AI_VTADJACENCY_H_INC