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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkQuadraticTetra.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 vtkQuadraticTetra_h
#define vtkQuadraticTetra_h

#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkNonLinearCell.h"

class vtkQuadraticEdge;
class vtkQuadraticTriangle;
class vtkTetra;
class vtkDoubleArray;

class VTKCOMMONDATAMODEL_EXPORT vtkQuadraticTetra : public vtkNonLinearCell
{
public:
  static vtkQuadraticTetra *New();
  vtkTypeMacro(vtkQuadraticTetra,vtkNonLinearCell);
  void PrintSelf(ostream& os, vtkIndent indent);


  int GetCellType() {return VTK_QUADRATIC_TETRA;}
  int GetCellDimension() {return 3;}
  int GetNumberOfEdges() {return 6;}
  int GetNumberOfFaces() {return 4;}
  vtkCell *GetEdge(int);
  vtkCell *GetFace(int);

  int CellBoundary(int subId, double pcoords[3], vtkIdList *pts);
  void Contour(double value, vtkDataArray *cellScalars,
               vtkIncrementalPointLocator *locator, vtkCellArray *verts,
               vtkCellArray *lines, vtkCellArray *polys,
               vtkPointData *inPd, vtkPointData *outPd,
               vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
  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 Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
  void Derivatives(int subId, double pcoords[3], double *values,
                   int dim, double *derivs);
  virtual double *GetParametricCoords();


  void Clip(double value, vtkDataArray *cellScalars,
            vtkIncrementalPointLocator *locator, vtkCellArray *tetras,
            vtkPointData *inPd, vtkPointData *outPd,
            vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
            int insideOut);


  int IntersectWithLine(double p1[3], double p2[3], double tol, double& t,
                        double x[3], double pcoords[3], int& subId);


  int GetParametricCenter(double pcoords[3]);

  double GetParametricDistance(double pcoords[3]);

  static void InterpolationFunctions(double pcoords[3], double weights[10]);
  static void InterpolationDerivs(double pcoords[3], double derivs[30]);

  virtual void InterpolateFunctions(double pcoords[3], double weights[10])
    {
    vtkQuadraticTetra::InterpolationFunctions(pcoords,weights);
    }
  virtual void InterpolateDerivs(double pcoords[3], double derivs[30])
    {
    vtkQuadraticTetra::InterpolationDerivs(pcoords,derivs);
    }


  static int *GetEdgeArray(int edgeId);
  static int *GetFaceArray(int faceId);

  void JacobianInverse(double pcoords[3], double **inverse, double derivs[30]);

protected:
  vtkQuadraticTetra();
  ~vtkQuadraticTetra();

  vtkQuadraticEdge *Edge;
  vtkQuadraticTriangle *Face;
  vtkTetra *Tetra;
  vtkDoubleArray *Scalars; //used to avoid New/Delete in contouring/clipping

private:
  vtkQuadraticTetra(const vtkQuadraticTetra&);  // Not implemented.
  void operator=(const vtkQuadraticTetra&);  // Not implemented.
};

#endif