vtkQuad.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkQuad.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 vtkQuad_h
#define vtkQuad_h
 
#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkCell.h"
 
class vtkLine;
class vtkTriangle;
class vtkIncrementalPointLocator;
 
class VTKCOMMONDATAMODEL_EXPORT vtkQuad : public vtkCell
{
public:
  static vtkQuad *New();
  vtkTypeMacro(vtkQuad,vtkCell);
  void PrintSelf(ostream& os, vtkIndent indent);
 
 
  int GetCellType() {return VTK_QUAD;};
  int GetCellDimension() {return 2;};
  int GetNumberOfEdges() {return 4;};
  int GetNumberOfFaces() {return 0;};
  vtkCell *GetEdge(int edgeId);
  vtkCell *GetFace(int) {return 0;};
  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 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 GetParametricCenter(double pcoords[3]);
 
 
  void Clip(double value, vtkDataArray *cellScalars,
            vtkIncrementalPointLocator *locator, vtkCellArray *polys,
            vtkPointData *inPd, vtkPointData *outPd,
            vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
            int insideOut);
 
  static void InterpolationFunctions(double pcoords[3], double sf[4]);
  static void InterpolationDerivs(double pcoords[3], double derivs[8]);
 
  virtual void InterpolateFunctions(double pcoords[3], double sf[4])
    {
    vtkQuad::InterpolationFunctions(pcoords,sf);
    }
  virtual void InterpolateDerivs(double pcoords[3], double derivs[8])
    {
    vtkQuad::InterpolationDerivs(pcoords,derivs);
    }
 
  int *GetEdgeArray(int edgeId);
 
protected:
  vtkQuad();
  ~vtkQuad();
 
  vtkLine     *Line;
  vtkTriangle *Triangle;
 
private:
  vtkQuad(const vtkQuad&);  // Not implemented.
  void operator=(const vtkQuad&);  // Not implemented.
};
//----------------------------------------------------------------------------
inline int vtkQuad::GetParametricCenter(double pcoords[3])
{
  pcoords[0] = pcoords[1] = 0.5;
  pcoords[2] = 0.0;
  return 0;
}
 
 
#endif