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00001 /*=========================================================================
00002 
00003   Program:   Visualization Toolkit
00004   Module:    vtkApproximatingSubdivisionFilter.h
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 =========================================================================*/
00026 #ifndef vtkApproximatingSubdivisionFilter_h
00027 #define vtkApproximatingSubdivisionFilter_h
00028 
00029 #include "vtkFiltersGeneralModule.h" // For export macro
00030 #include "vtkPolyDataAlgorithm.h"
00031 
00032 class vtkCellArray;
00033 class vtkCellData;
00034 class vtkIdList;
00035 class vtkIntArray;
00036 class vtkPoints;
00037 class vtkPointData;
00038 
00039 class VTKFILTERSGENERAL_EXPORT vtkApproximatingSubdivisionFilter : public vtkPolyDataAlgorithm
00040 {
00041 public:
00042   vtkTypeMacro(vtkApproximatingSubdivisionFilter,vtkPolyDataAlgorithm);
00043   void PrintSelf(ostream& os, vtkIndent indent);
00044 
00046 
00047   vtkSetMacro(NumberOfSubdivisions,int);
00048   vtkGetMacro(NumberOfSubdivisions,int);
00050 
00051 protected:
00052   vtkApproximatingSubdivisionFilter();
00053   ~vtkApproximatingSubdivisionFilter() {}
00054 
00055   int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
00056   virtual int GenerateSubdivisionPoints (vtkPolyData *inputDS,
00057                                           vtkIntArray *edgeData,
00058                                           vtkPoints *outputPts,
00059                                           vtkPointData *outputPD) = 0;
00060   void GenerateSubdivisionCells (vtkPolyData *inputDS, vtkIntArray *edgeData,
00061                                  vtkCellArray *outputPolys,
00062                                  vtkCellData *outputCD);
00063   int FindEdge (vtkPolyData *mesh, vtkIdType cellId, vtkIdType p1,
00064                 vtkIdType p2, vtkIntArray *edgeData, vtkIdList *cellIds);
00065   vtkIdType InterpolatePosition (vtkPoints *inputPts, vtkPoints *outputPts,
00066                                  vtkIdList *stencil, double *weights);
00067   int NumberOfSubdivisions;
00068 private:
00069   vtkApproximatingSubdivisionFilter(const vtkApproximatingSubdivisionFilter&);  // Not implemented.
00070   void operator=(const vtkApproximatingSubdivisionFilter&);  // Not implemented.
00071 };
00072 
00073 #endif