[1963] | 1 | /* |
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| 2 | Bullet Continuous Collision Detection and Physics Library |
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| 3 | Copyright (c) 2003-2006 Erwin Coumans http://continuousphysics.com/Bullet/ |
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| 4 | |
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| 5 | This software is provided 'as-is', without any express or implied warranty. |
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| 6 | In no event will the authors be held liable for any damages arising from the use of this software. |
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| 7 | Permission is granted to anyone to use this software for any purpose, |
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| 8 | including commercial applications, and to alter it and redistribute it freely, |
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| 9 | subject to the following restrictions: |
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| 10 | |
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| 11 | 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. |
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| 12 | 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. |
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| 13 | 3. This notice may not be removed or altered from any source distribution. |
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| 14 | */ |
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| 15 | |
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| 16 | #ifndef BT_TRIANGLE_INDEX_VERTEX_ARRAY_H |
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| 17 | #define BT_TRIANGLE_INDEX_VERTEX_ARRAY_H |
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| 18 | |
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| 19 | #include "btStridingMeshInterface.h" |
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| 20 | #include "LinearMath/btAlignedObjectArray.h" |
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| 21 | #include "LinearMath/btScalar.h" |
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| 22 | |
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| 23 | |
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| 24 | ///The btIndexedMesh indexes a single vertex and index array. Multiple btIndexedMesh objects can be passed into a btTriangleIndexVertexArray using addIndexedMesh. |
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| 25 | ///Instead of the number of indices, we pass the number of triangles. |
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| 26 | ATTRIBUTE_ALIGNED16( struct) btIndexedMesh |
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| 27 | { |
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| 28 | BT_DECLARE_ALIGNED_ALLOCATOR(); |
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| 29 | |
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| 30 | int m_numTriangles; |
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| 31 | const unsigned char * m_triangleIndexBase; |
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| 32 | int m_triangleIndexStride; |
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| 33 | int m_numVertices; |
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| 34 | const unsigned char * m_vertexBase; |
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| 35 | int m_vertexStride; |
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| 36 | // The index type is set when adding an indexed mesh to the |
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| 37 | // btTriangleIndexVertexArray, do not set it manually |
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| 38 | PHY_ScalarType m_indexType; |
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| 39 | int pad; |
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| 40 | } |
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| 41 | ; |
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| 42 | |
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| 43 | |
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| 44 | typedef btAlignedObjectArray<btIndexedMesh> IndexedMeshArray; |
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| 45 | |
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| 46 | ///The btTriangleIndexVertexArray allows to access multiple triangle meshes, by indexing into existing triangle/index arrays. |
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| 47 | ///Additional meshes can be added using addIndexedMesh |
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| 48 | ///No duplcate is made of the vertex/index data, it only indexes into external vertex/index arrays. |
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| 49 | ///So keep those arrays around during the lifetime of this btTriangleIndexVertexArray. |
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| 50 | ATTRIBUTE_ALIGNED16( class) btTriangleIndexVertexArray : public btStridingMeshInterface |
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| 51 | { |
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| 52 | protected: |
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| 53 | IndexedMeshArray m_indexedMeshes; |
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| 54 | int m_pad[2]; |
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| 55 | int m_hasAabb; // using int instead of bool to maintain alignment |
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| 56 | btVector3 m_aabbMin; |
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| 57 | btVector3 m_aabbMax; |
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| 58 | |
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| 59 | public: |
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| 60 | |
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| 61 | BT_DECLARE_ALIGNED_ALLOCATOR(); |
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| 62 | |
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| 63 | btTriangleIndexVertexArray() : m_hasAabb(0) |
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| 64 | { |
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| 65 | } |
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| 66 | |
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| 67 | virtual ~btTriangleIndexVertexArray(); |
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| 68 | |
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| 69 | //just to be backwards compatible |
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| 70 | btTriangleIndexVertexArray(int numTriangles,int* triangleIndexBase,int triangleIndexStride,int numVertices,btScalar* vertexBase,int vertexStride); |
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| 71 | |
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| 72 | void addIndexedMesh(const btIndexedMesh& mesh, PHY_ScalarType indexType = PHY_INTEGER) |
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| 73 | { |
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| 74 | m_indexedMeshes.push_back(mesh); |
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| 75 | m_indexedMeshes[m_indexedMeshes.size()-1].m_indexType = indexType; |
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| 76 | } |
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| 77 | |
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| 78 | |
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| 79 | virtual void getLockedVertexIndexBase(unsigned char **vertexbase, int& numverts,PHY_ScalarType& type, int& vertexStride,unsigned char **indexbase,int & indexstride,int& numfaces,PHY_ScalarType& indicestype,int subpart=0); |
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| 80 | |
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| 81 | virtual void getLockedReadOnlyVertexIndexBase(const unsigned char **vertexbase, int& numverts,PHY_ScalarType& type, int& vertexStride,const unsigned char **indexbase,int & indexstride,int& numfaces,PHY_ScalarType& indicestype,int subpart=0) const; |
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| 82 | |
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| 83 | /// unLockVertexBase finishes the access to a subpart of the triangle mesh |
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| 84 | /// make a call to unLockVertexBase when the read and write access (using getLockedVertexIndexBase) is finished |
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| 85 | virtual void unLockVertexBase(int subpart) {(void)subpart;} |
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| 86 | |
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| 87 | virtual void unLockReadOnlyVertexBase(int subpart) const {(void)subpart;} |
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| 88 | |
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| 89 | /// getNumSubParts returns the number of seperate subparts |
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| 90 | /// each subpart has a continuous array of vertices and indices |
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| 91 | virtual int getNumSubParts() const { |
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| 92 | return (int)m_indexedMeshes.size(); |
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| 93 | } |
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| 94 | |
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| 95 | IndexedMeshArray& getIndexedMeshArray() |
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| 96 | { |
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| 97 | return m_indexedMeshes; |
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| 98 | } |
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| 99 | |
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| 100 | const IndexedMeshArray& getIndexedMeshArray() const |
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| 101 | { |
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| 102 | return m_indexedMeshes; |
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| 103 | } |
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| 104 | |
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| 105 | virtual void preallocateVertices(int numverts){(void) numverts;} |
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| 106 | virtual void preallocateIndices(int numindices){(void) numindices;} |
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| 107 | |
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| 108 | virtual bool hasPremadeAabb() const; |
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| 109 | virtual void setPremadeAabb(const btVector3& aabbMin, const btVector3& aabbMax ); |
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| 110 | virtual void getPremadeAabb(btVector3* aabbMin, btVector3* aabbMax ) const; |
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| 111 | |
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| 112 | } |
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| 113 | ; |
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| 114 | |
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| 115 | #endif //BT_TRIANGLE_INDEX_VERTEX_ARRAY_H |
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