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dox/Filtering/vtkTetra.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkTetra.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 =========================================================================*/
00032 #ifndef __vtkTetra_h
00033 #define __vtkTetra_h
00034 
00035 #include "vtkCell3D.h"
00036 
00037 class vtkLine;
00038 class vtkTriangle;
00039 class vtkUnstructuredGrid;
00040 
00041 class VTK_FILTERING_EXPORT vtkTetra : public vtkCell3D
00042 {
00043 public:
00044   static vtkTetra *New();
00045   vtkTypeRevisionMacro(vtkTetra,vtkCell3D);
00046   void PrintSelf(ostream& os, vtkIndent indent);
00047 
00049 
00050   virtual void GetEdgePoints(int edgeId, int* &pts);
00051   virtual void GetFacePoints(int faceId, int* &pts);
00053 
00055 
00056   int GetCellType() {return VTK_TETRA;}
00057   int GetNumberOfEdges() {return 6;}
00058   int GetNumberOfFaces() {return 4;}
00059   vtkCell *GetEdge(int edgeId);
00060   vtkCell *GetFace(int faceId);
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);
00066   void Clip(double value, vtkDataArray *cellScalars,
00067             vtkPointLocator *locator, vtkCellArray *connectivity,
00068             vtkPointData *inPd, vtkPointData *outPd,
00069             vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
00070             int insideOut);
00071   int EvaluatePosition(double x[3], double* closestPoint,
00072                        int& subId, double pcoords[3],
00073                        double& dist2, double *weights);
00074   void EvaluateLocation(int& subId, double pcoords[3], double x[3],
00075                         double *weights);
00076   int IntersectWithLine(double p1[3], double p2[3], double tol, double& t,
00077                         double x[3], double pcoords[3], int& subId);
00078   int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
00079   void Derivatives(int subId, double pcoords[3], double *values,
00080                    int dim, double *derivs);
00081   virtual double *GetParametricCoords();
00083 
00087   int CellBoundary(int subId, double pcoords[3], vtkIdList *pts);
00088 
00090   int GetParametricCenter(double pcoords[3]);
00091 
00094   double GetParametricDistance(double pcoords[3]);
00095 
00097 
00098   static void TetraCenter(double p1[3], double p2[3], double p3[3], double p4[3],
00099                           double center[3]);
00101 
00103 
00106   static double Circumsphere(double  p1[3], double p2[3], double p3[3],
00107                              double p4[3], double center[3]);
00109 
00111 
00114   static double Insphere(double  p1[3], double p2[3], double p3[3],
00115                          double p4[3], double center[3]);
00117 
00119 
00130   static int BarycentricCoords(double x[3], double  x1[3], double x2[3],
00131                                double x3[3], double x4[3], double bcoords[4]);
00133 
00135 
00137   static double ComputeVolume(double  p1[3], double p2[3], double p3[3],
00138                               double p4[3]);
00140 
00144   int JacobianInverse(double **inverse, double derivs[12]);
00145 
00147 
00148   static void InterpolationFunctions(double pcoords[3], double weights[4]);
00149   // Description:
00150   // @deprecated Replaced by vtkTetra::InterpolateDerivs as of VTK 5.2
00151   static void InterpolationDerivs(double pcoords[3], double derivs[12]);
00152   // Description:
00153   // Compute the interpolation functions/derivatives
00154   // (aka shape functions/derivatives)
00155   virtual void InterpolateFunctions(double pcoords[3], double weights[4])
00156     {
00157     vtkTetra::InterpolationFunctions(pcoords,weights);
00158     }
00159   virtual void InterpolateDerivs(double pcoords[3], double derivs[12])
00160     {
00161     vtkTetra::InterpolationDerivs(pcoords,derivs);
00162     }
00164 
00166 
00168   static int *GetEdgeArray(int edgeId);
00169   static int *GetFaceArray(int faceId);
00171 
00172 protected:
00173   vtkTetra();
00174   ~vtkTetra();
00175 
00176   vtkLine *Line;
00177   vtkTriangle *Triangle;
00178 
00179 private:
00180   vtkTetra(const vtkTetra&);  // Not implemented.
00181   void operator=(const vtkTetra&);  // Not implemented.
00182 };
00183 
00184 inline int vtkTetra::GetParametricCenter(double pcoords[3])
00185 {
00186   pcoords[0] = pcoords[1] = pcoords[2] = 0.25;
00187   return 0;
00188 }
00189 
00190 #endif
00191 
00192 
00193 

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