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Common/vtkHexahedron.h

00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkHexahedron.h,v $
00005 
00006   Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
00007   All rights reserved.
00008   See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
00009 
00010      This software is distributed WITHOUT ANY WARRANTY; without even
00011      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
00012      PURPOSE.  See the above copyright notice for more information.
00013 
00014 =========================================================================*/
00033 #ifndef __vtkHexahedron_h
00034 #define __vtkHexahedron_h
00035 
00036 #include "vtkCell3D.h"
00037 
00038 class vtkLine;
00039 class vtkQuad;
00040 
00041 class VTK_COMMON_EXPORT vtkHexahedron : public vtkCell3D
00042 {
00043 public:
00044   static vtkHexahedron *New();
00045   vtkTypeRevisionMacro(vtkHexahedron,vtkCell3D);
00046 
00048 
00049   virtual void GetEdgePoints(int edgeId, int* &pts);
00050   virtual void GetFacePoints(int faceId, int* &pts);
00052 
00054 
00055   int GetCellType() {return VTK_HEXAHEDRON;}
00056   int GetNumberOfEdges() {return 12;}
00057   int GetNumberOfFaces() {return 6;}
00058   vtkCell *GetEdge(int edgeId);
00059   vtkCell *GetFace(int faceId);
00060   int CellBoundary(int subId, double pcoords[3], vtkIdList *pts);
00061   void Contour(double value, vtkDataArray *cellScalars, 
00062                vtkPointLocator *locator, vtkCellArray *verts, 
00063                vtkCellArray *lines, vtkCellArray *polys,
00064                vtkPointData *inPd, vtkPointData *outPd,
00065                vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
00067 
00068   int EvaluatePosition(double x[3], double* closestPoint,
00069                        int& subId, double pcoords[3],
00070                        double& dist2, double *weights);
00071   void EvaluateLocation(int& subId, double pcoords[3], double x[3],
00072                         double *weights);
00073   int IntersectWithLine(double p1[3], double p2[3], double tol, double& t,
00074                         double x[3], double pcoords[3], int& subId);
00075   int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
00076   void Derivatives(int subId, double pcoords[3], double *values, 
00077                    int dim, double *derivs);
00078   virtual double *GetParametricCoords();
00079 
00081 
00082   static void InterpolationFunctions(double pcoords[3], double weights[8]);
00083   static void InterpolationDerivs(double pcoords[3], double derivs[24]);
00084   static int *GetEdgeArray(int edgeId);
00085   static int *GetFaceArray(int faceId);
00087 
00091   void JacobianInverse(double pcoords[3], double **inverse, double derivs[24]);
00092 
00093 protected:
00094   vtkHexahedron();
00095   ~vtkHexahedron();
00096 
00097   vtkLine *Line;
00098   vtkQuad *Quad;
00099 
00100 private:
00101   vtkHexahedron(const vtkHexahedron&);  // Not implemented.
00102   void operator=(const vtkHexahedron&);  // Not implemented.
00103 };
00104 
00105 #endif
00106 
00107