vtkTetra.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkTetra.h
 
  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
  All rights reserved.
  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
 
     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notice for more information.
 
=========================================================================*/
#ifndef vtkTetra_h
#define vtkTetra_h
 
#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkCell3D.h"
 
class vtkLine;
class vtkTriangle;
class vtkUnstructuredGrid;
class vtkIncrementalPointLocator;
 
class VTKCOMMONDATAMODEL_EXPORT vtkTetra : public vtkCell3D
{
public:
  static vtkTetra *New();
  vtkTypeMacro(vtkTetra,vtkCell3D);
  void PrintSelf(ostream& os, vtkIndent indent);
 
 
  virtual void GetEdgePoints(int edgeId, int* &pts);
  virtual void GetFacePoints(int faceId, int* &pts);
 
 
  int GetCellType() {return VTK_TETRA;}
  int GetNumberOfEdges() {return 6;}
  int GetNumberOfFaces() {return 4;}
  vtkCell *GetEdge(int edgeId);
  vtkCell *GetFace(int faceId);
  void Contour(double value, vtkDataArray *cellScalars,
               vtkIncrementalPointLocator *locator, vtkCellArray *verts,
               vtkCellArray *lines, vtkCellArray *polys,
               vtkPointData *inPd, vtkPointData *outPd,
               vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
  void Clip(double value, vtkDataArray *cellScalars,
            vtkIncrementalPointLocator *locator, vtkCellArray *connectivity,
            vtkPointData *inPd, vtkPointData *outPd,
            vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
            int insideOut);
  int EvaluatePosition(double x[3], double* closestPoint,
                       int& subId, double pcoords[3],
                       double& dist2, double *weights);
  void EvaluateLocation(int& subId, double pcoords[3], double x[3],
                        double *weights);
  int IntersectWithLine(double p1[3], double p2[3], double tol, double& t,
                        double x[3], double pcoords[3], int& subId);
  int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
  void Derivatives(int subId, double pcoords[3], double *values,
                   int dim, double *derivs);
  virtual double *GetParametricCoords();
 
  int CellBoundary(int subId, double pcoords[3], vtkIdList *pts);
 
  int GetParametricCenter(double pcoords[3]);
 
  double GetParametricDistance(double pcoords[3]);
 
 
  static void TetraCenter(double p1[3], double p2[3], double p3[3], double p4[3],
                          double center[3]);
 
 
  static double Circumsphere(double  p1[3], double p2[3], double p3[3],
                             double p4[3], double center[3]);
 
 
  static double Insphere(double  p1[3], double p2[3], double p3[3],
                         double p4[3], double center[3]);
 
 
  static int BarycentricCoords(double x[3], double  x1[3], double x2[3],
                               double x3[3], double x4[3], double bcoords[4]);
 
 
  static double ComputeVolume(double  p1[3], double p2[3], double p3[3],
                              double p4[3]);
 
  int JacobianInverse(double **inverse, double derivs[12]);
 
  static void InterpolationFunctions(double pcoords[3], double weights[4]);
  static void InterpolationDerivs(double pcoords[3], double derivs[12]);
 
  virtual void InterpolateFunctions(double pcoords[3], double weights[4])
    {
    vtkTetra::InterpolationFunctions(pcoords,weights);
    }
  virtual void InterpolateDerivs(double pcoords[3], double derivs[12])
    {
    vtkTetra::InterpolationDerivs(pcoords,derivs);
    }
 
 
  static int *GetEdgeArray(int edgeId);
  static int *GetFaceArray(int faceId);
 
protected:
  vtkTetra();
  ~vtkTetra();
 
  vtkLine *Line;
  vtkTriangle *Triangle;
 
private:
  vtkTetra(const vtkTetra&);  // Not implemented.
  void operator=(const vtkTetra&);  // Not implemented.
};
 
inline int vtkTetra::GetParametricCenter(double pcoords[3])
{
  pcoords[0] = pcoords[1] = pcoords[2] = 0.25;
  return 0;
}
 
#endif