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00023 #ifndef _MxQuadrangle8CellExtract_h
00024 #define _MxQuadrangle8CellExtract_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
00057 class MESHIVIZ_API MxQuadrangle8CellExtract
00058 {
00059 public:
00060
00074 static MbVec3d getIsoParametricCoord(const MiGeometryI& meshGeometry, const MiSurfaceCell* quadrangleCell, const MbVec3d &point);
00075
00081 static MbVec3d getIsoParametricCoord(size_t nodeIndex)
00082 {
00083 return MbVec3d(s_nodesIsoParametricCoords[nodeIndex]);
00084 }
00085
00105 static void getWeight(const MiGeometryI& meshGeometry, const MiSurfaceCell* quadrangleCell, const MbVec3d &point, std::vector<double>& weights)
00106 {
00107 getWeight(getIsoParametricCoord(meshGeometry,quadrangleCell,point),weights);
00108 }
00109
00122 static void getWeight(const MbVec3d &ipcoord, std::vector<double>& weights);
00123
00135 static void getDerivs(const MbVec3d &ipcoord, std::vector<double>& derivs);
00136
00150 static bool isPointInsideCell(const MiGeometryI& meshGeometry, const MiSurfaceCell* quadrangleCell, const MbVec3d &point, std::vector<double>& weights)
00151 {
00152 MbVec3d pcoord = getIsoParametricCoord(meshGeometry,quadrangleCell,point);
00153 bool inside = ( -1.E-5 < pcoord[0] && pcoord[0] < 1 + 1.E-5 &&
00154 -1.E-5 < pcoord[1] && pcoord[1] < 1 + 1.E-5 );
00155 if (inside)
00156 getWeight(pcoord,weights);
00157 return inside;
00158 }
00159
00167 static size_t getSubTriangleNodesIndex (std::vector<size_t>& triangleNodeIds)
00168 {
00169 triangleNodeIds.assign(s_subTriangleNodeIds,s_subTriangleNodeIds+(6*3));
00170 return 6;
00171 }
00172
00173 friend std::ostream& operator << (std::ostream& s, const MxQuadrangle8CellExtract& cell);
00174
00175 private:
00176 static double s_nodesIsoParametricCoords[8][3];
00177 static size_t s_subTriangleNodeIds[6*3];
00178 };
00179
00180 #endif
00181
00182