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vtkHexahedron.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkHexahedron.h,v $
00005   Language:  C++
00006 
00007   Copyright (c) 1993-2002 Ken Martin, Will Schroeder, Bill Lorensen 
00008   All rights reserved.
00009   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
00010 
00011      This software is distributed WITHOUT ANY WARRANTY; without even 
00012      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
00013      PURPOSE.  See the above copyright notice for more information.
00014 
00015 =========================================================================*/
00037 #ifndef __vtkHexahedron_h
00038 #define __vtkHexahedron_h
00039 
00040 #include "vtkCell3D.h"
00041 
00042 class vtkLine;
00043 class vtkQuad;
00044 
00045 class VTK_COMMON_EXPORT vtkHexahedron : public vtkCell3D
00046 {
00047 public:
00048   static vtkHexahedron *New();
00049   vtkTypeRevisionMacro(vtkHexahedron,vtkCell3D);
00050 
00052 
00053   virtual void GetEdgePoints(int edgeId, int* &pts);
00054   virtual void GetFacePoints(int faceId, int* &pts);
00055   virtual float *GetParametricCoords();
00057 
00059 
00060   int GetCellType() {return VTK_HEXAHEDRON;}
00061   int GetNumberOfEdges() {return 12;}
00062   int GetNumberOfFaces() {return 6;}
00063   vtkCell *GetEdge(int edgeId);
00064   vtkCell *GetFace(int faceId);
00065   int CellBoundary(int subId, float pcoords[3], vtkIdList *pts);
00066   void Contour(float value, vtkDataArray *cellScalars, 
00067                vtkPointLocator *locator, vtkCellArray *verts, 
00068                vtkCellArray *lines, vtkCellArray *polys,
00069                vtkPointData *inPd, vtkPointData *outPd,
00070                vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
00072 
00073   int EvaluatePosition(float x[3], float* closestPoint,
00074                        int& subId, float pcoords[3],
00075                        float& dist2, float *weights);
00076   void EvaluateLocation(int& subId, float pcoords[3], float x[3],
00077                         float *weights);
00078   int IntersectWithLine(float p1[3], float p2[3], float tol, float& t,
00079                         float x[3], float pcoords[3], int& subId);
00080   int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
00081   void Derivatives(int subId, float pcoords[3], float *values, 
00082                    int dim, float *derivs);
00083 
00085 
00086   static void InterpolationFunctions(float pcoords[3], float weights[8]);
00087   static void InterpolationDerivs(float pcoords[3], float derivs[24]);
00088   static int *GetEdgeArray(int edgeId);
00089   static int *GetFaceArray(int faceId);
00091 
00095   void JacobianInverse(float pcoords[3], double **inverse, float derivs[24]);
00096 
00097 protected:
00098   vtkHexahedron();
00099   ~vtkHexahedron();
00100 
00101   vtkLine *Line;
00102   vtkQuad *Quad;
00103 
00104 private:
00105   vtkHexahedron(const vtkHexahedron&);  // Not implemented.
00106   void operator=(const vtkHexahedron&);  // Not implemented.
00107 };
00108 
00109 #endif
00110 
00111