VTK
dox/Filtering/vtkHexahedron.h
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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    vtkHexahedron.h
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 =========================================================================*/
00036 #ifndef __vtkHexahedron_h
00037 #define __vtkHexahedron_h
00038 
00039 #include "vtkCell3D.h"
00040 
00041 class vtkLine;
00042 class vtkQuad;
00043 class vtkIncrementalPointLocator;
00044 
00045 class VTK_FILTERING_EXPORT vtkHexahedron : public vtkCell3D
00046 {
00047 public:
00048   static vtkHexahedron *New();
00049   vtkTypeMacro(vtkHexahedron,vtkCell3D);
00050   void PrintSelf(ostream& os, vtkIndent indent);
00051 
00053 
00054   virtual void GetEdgePoints(int edgeId, int* &pts);
00055   virtual void GetFacePoints(int faceId, int* &pts);
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, double pcoords[3], vtkIdList *pts);
00066   void Contour(double value, vtkDataArray *cellScalars,
00067                vtkIncrementalPointLocator *locator, vtkCellArray *verts,
00068                vtkCellArray *lines, vtkCellArray *polys,
00069                vtkPointData *inPd, vtkPointData *outPd,
00070                vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
00072 
00073   int EvaluatePosition(double x[3], double* closestPoint,
00074                        int& subId, double pcoords[3],
00075                        double& dist2, double *weights);
00076   void EvaluateLocation(int& subId, double pcoords[3], double x[3],
00077                         double *weights);
00078   int IntersectWithLine(double p1[3], double p2[3], double tol, double& t,
00079                         double x[3], double pcoords[3], int& subId);
00080   int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
00081   void Derivatives(int subId, double pcoords[3], double *values,
00082                    int dim, double *derivs);
00083   virtual double *GetParametricCoords();
00084 
00086 
00088   static void InterpolationFunctions(double pcoords[3], double weights[8]);
00089   // Description:
00090   // @deprecated Replaced by vtkHexahedron::InterpolateDerivs as of VTK 5.2
00091   static void InterpolationDerivs(double pcoords[3], double derivs[24]);
00092   // Description:
00093   // Compute the interpolation functions/derivatives
00094   // (aka shape functions/derivatives)
00095   virtual void InterpolateFunctions(double pcoords[3], double weights[8])
00096     {
00097     vtkHexahedron::InterpolationFunctions(pcoords,weights);
00098     }
00099   virtual void InterpolateDerivs(double pcoords[3], double derivs[24])
00100     {
00101     vtkHexahedron::InterpolationDerivs(pcoords,derivs);
00102     }
00104 
00106 
00108   static int *GetEdgeArray(int edgeId);
00109   static int *GetFaceArray(int faceId);
00111 
00115   void JacobianInverse(double pcoords[3], double **inverse, double derivs[24]);
00116 
00117 protected:
00118   vtkHexahedron();
00119   ~vtkHexahedron();
00120 
00121   vtkLine *Line;
00122   vtkQuad *Quad;
00123 
00124 private:
00125   vtkHexahedron(const vtkHexahedron&);  // Not implemented.
00126   void operator=(const vtkHexahedron&);  // Not implemented.
00127 };
00128 
00129 #endif
00130 
00131