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dox/Filtering/vtkQuad.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkQuad.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 =========================================================================*/
00027 #ifndef __vtkQuad_h
00028 #define __vtkQuad_h
00029 
00030 #include "vtkCell.h"
00031 
00032 class vtkLine;
00033 class vtkTriangle;
00034 
00035 class VTK_FILTERING_EXPORT vtkQuad : public vtkCell
00036 {
00037 public:
00038   static vtkQuad *New();
00039   vtkTypeRevisionMacro(vtkQuad,vtkCell);
00040   void PrintSelf(ostream& os, vtkIndent indent);
00041 
00043 
00044   int GetCellType() {return VTK_QUAD;};
00045   int GetCellDimension() {return 2;};
00046   int GetNumberOfEdges() {return 4;};
00047   int GetNumberOfFaces() {return 0;};
00048   vtkCell *GetEdge(int edgeId);
00049   vtkCell *GetFace(int) {return 0;};
00050   int CellBoundary(int subId, double pcoords[3], vtkIdList *pts);
00051   void Contour(double value, vtkDataArray *cellScalars,
00052                vtkPointLocator *locator, vtkCellArray *verts,
00053                vtkCellArray *lines, vtkCellArray *polys,
00054                vtkPointData *inPd, vtkPointData *outPd,
00055                vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
00056   int EvaluatePosition(double x[3], double* closestPoint,
00057                        int& subId, double pcoords[3],
00058                        double& dist2, double *weights);
00059   void EvaluateLocation(int& subId, double pcoords[3], double x[3],
00060                         double *weights);
00061   int IntersectWithLine(double p1[3], double p2[3], double tol, double& t,
00062                         double x[3], double pcoords[3], int& subId);
00063   int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
00064   void Derivatives(int subId, double pcoords[3], double *values,
00065                    int dim, double *derivs);
00066   virtual double *GetParametricCoords();
00068 
00070   int GetParametricCenter(double pcoords[3]);
00071 
00073 
00075   void Clip(double value, vtkDataArray *cellScalars,
00076             vtkPointLocator *locator, vtkCellArray *polys,
00077             vtkPointData *inPd, vtkPointData *outPd,
00078             vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
00079             int insideOut);
00081 
00083 
00084   static void InterpolationFunctions(double pcoords[3], double sf[4]);
00085   // Description:
00086   // @deprecated Replaced by vtkQuad::InterpolateDerivs as of VTK 5.2
00087   static void InterpolationDerivs(double pcoords[3], double derivs[8]);
00088   // Description:
00089   // Compute the interpolation functions/derivatives
00090   // (aka shape functions/derivatives)
00091   virtual void InterpolateFunctions(double pcoords[3], double sf[4])
00092     {
00093     vtkQuad::InterpolationFunctions(pcoords,sf);
00094     }
00095   virtual void InterpolateDerivs(double pcoords[3], double derivs[8])
00096     {
00097     vtkQuad::InterpolationDerivs(pcoords,derivs);
00098     }
00100 
00103   int *GetEdgeArray(int edgeId);
00104 
00105 protected:
00106   vtkQuad();
00107   ~vtkQuad();
00108 
00109   vtkLine     *Line;
00110   vtkTriangle *Triangle;
00111 
00112 private:
00113   vtkQuad(const vtkQuad&);  // Not implemented.
00114   void operator=(const vtkQuad&);  // Not implemented.
00115 };
00116 //----------------------------------------------------------------------------
00117 inline int vtkQuad::GetParametricCenter(double pcoords[3])
00118 {
00119   pcoords[0] = pcoords[1] = 0.5;
00120   pcoords[2] = 0.0;
00121   return 0;
00122 }
00123 
00124 
00125 #endif
00126 
00127 

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