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00023 #ifndef _MxTriangleCellExtract_h
00024 #define _MxTriangleCellExtract_h
00025
00026 #include <MeshVizXLM/mesh/geometry/MiGeometryI.h>
00027
00028 #include <Inventor/STL/vector>
00029 #include <Inventor/STL/utility>
00030
00031 class MiSurfaceCell;
00032
00056 class MESHVIZXLM_EXTR_API MxTriangleCellExtract
00057 {
00058 public:
00059
00073 static MbVec3d getIsoParametricCoord(const MiGeometryI& meshGeometry, const MiSurfaceCell* triangleCell, const MbVec3d &point);
00074
00080 static MbVec3d getIsoParametricCoord(size_t nodeIndex);
00081
00101 static void getWeight(const MiGeometryI& meshGeometry, const MiSurfaceCell* triangleCell, const MbVec3d &point, std::vector<double>& weights)
00102 {
00103 getWeight(getIsoParametricCoord(meshGeometry,triangleCell,point),weights);
00104 }
00105
00118 static void getWeight(const MbVec3d &ipcoord, std::vector<double>& weights)
00119 {
00120 weights[1] = ipcoord[0];
00121 weights[2] = ipcoord[1];
00122 weights[0] = 1.0 - weights[1] - weights[2];
00123 }
00124
00138 static bool isPointInsideCell(const MiGeometryI& meshGeometry, const MiSurfaceCell* triangleCell, const MbVec3d &point, std::vector<double>& weights)
00139 {
00140 getWeight(getIsoParametricCoord(meshGeometry,triangleCell,point),weights);
00141 return ( -1.E-5 < weights[0] && weights[0] < 1 + 1.E-5 &&
00142 -1.E-5 < weights[1] && weights[1] < 1 + 1.E-5 &&
00143 -1.E-5 < weights[2] && weights[2] < 1 + 1.E-5);
00144 }
00145
00149 static double getLongestEdgeLength(const MiGeometryI& meshGeometry, const MiSurfaceCell* cell);
00150
00154 static double getShortestEdgeLength(const MiGeometryI& meshGeometry, const MiSurfaceCell* cell);
00155
00156 private:
00157
00158 static double s_nodesIsoParametricCoords[3][3];
00159 };
00160
00161 #endif
00162
00163