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dox/Filtering/vtkPixel.h

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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    $RCSfile: vtkPixel.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 __vtkPixel_h
00028 #define __vtkPixel_h
00029 
00030 #include "vtkCell.h"
00031 
00032 class vtkLine;
00033 
00034 class VTK_FILTERING_EXPORT vtkPixel : public vtkCell
00035 {
00036 public:
00037   static vtkPixel *New();
00038   vtkTypeRevisionMacro(vtkPixel,vtkCell);
00039   void PrintSelf(ostream& os, vtkIndent indent);
00040 
00042 
00043   int GetCellType() {return VTK_PIXEL;};
00044   int GetCellDimension() {return 2;};
00045   int GetNumberOfEdges() {return 4;};
00046   int GetNumberOfFaces() {return 0;};
00047   vtkCell *GetEdge(int edgeId);
00048   vtkCell *GetFace(int) {return 0;};
00049   int CellBoundary(int subId, double pcoords[3], vtkIdList *pts);
00050   void Contour(double value, vtkDataArray *cellScalars,
00051                vtkPointLocator *locator, vtkCellArray *verts,
00052                vtkCellArray *lines, vtkCellArray *polys,
00053                vtkPointData *inPd, vtkPointData *outPd,
00054                vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd);
00055   void Clip(double value, vtkDataArray *cellScalars,
00056             vtkPointLocator *locator, vtkCellArray *polys,
00057             vtkPointData *inPd, vtkPointData *outPd,
00058             vtkCellData *inCd, vtkIdType cellId, vtkCellData *outCd,
00059             int insideOut);
00060   int EvaluatePosition(double x[3], double* closestPoint,
00061                        int& subId, double pcoords[3],
00062                        double& dist2, double *weights);
00063   void EvaluateLocation(int& subId, double pcoords[3], double x[3],
00064                         double *weights);
00066 
00068   int GetParametricCenter(double pcoords[3]);
00069 
00070   int IntersectWithLine(double p1[3], double p2[3], double tol, double& t,
00071                         double x[3], double pcoords[3], int& subId);
00072   int Triangulate(int index, vtkIdList *ptIds, vtkPoints *pts);
00073   void Derivatives(int subId, double pcoords[3], double *values,
00074                    int dim, double *derivs);
00075   virtual double *GetParametricCoords();
00076 
00078 
00079   static void InterpolationFunctions(double pcoords[3], double weights[4]);
00080   // Description:
00081   // @deprecated Replaced by vtkPixel::InterpolateDerivs as of VTK 5.2
00082   static void InterpolationDerivs(double pcoords[3], double derivs[8]);
00083   // Description:
00084   // Compute the interpolation functions/derivatives
00085   // (aka shape functions/derivatives)
00086   virtual void InterpolateFunctions(double pcoords[3], double weights[4])
00087     {
00088     vtkPixel::InterpolationFunctions(pcoords,weights);
00089     }
00090   virtual void InterpolateDerivs(double pcoords[3], double derivs[8])
00091     {
00092     vtkPixel::InterpolationDerivs(pcoords,derivs);
00093     }
00095 
00096 protected:
00097   vtkPixel();
00098   ~vtkPixel();
00099 
00100   vtkLine *Line;
00101 
00102 private:
00103   vtkPixel(const vtkPixel&);  // Not implemented.
00104   void operator=(const vtkPixel&);  // Not implemented.
00105 };
00106 
00107 //----------------------------------------------------------------------------
00108 inline int vtkPixel::GetParametricCenter(double pcoords[3])
00109 {
00110   pcoords[0] = pcoords[1] = 0.5;
00111   pcoords[2] = 0.0;
00112   return 0;
00113 }
00114 
00115 #endif
00116 
00117 

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