Graphics/vtkLoopSubdivisionFilter.h

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

  Program:   Visualization Toolkit
  Module:    $RCSfile: vtkLoopSubdivisionFilter.h,v $

  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 __vtkLoopSubdivisionFilter_h
#define __vtkLoopSubdivisionFilter_h

#include "vtkApproximatingSubdivisionFilter.h"

class vtkPolyData;
class vtkIntArray;
class vtkPoints;
class vtkIdList;

class VTK_GRAPHICS_EXPORT vtkLoopSubdivisionFilter : public vtkApproximatingSubdivisionFilter
{
public:

  static vtkLoopSubdivisionFilter *New();
  vtkTypeRevisionMacro(vtkLoopSubdivisionFilter,vtkApproximatingSubdivisionFilter);

protected:
  vtkLoopSubdivisionFilter () {};
  ~vtkLoopSubdivisionFilter () {};

  void GenerateSubdivisionPoints (vtkPolyData *inputDS, vtkIntArray *edgeData,
                                  vtkPoints *outputPts,
                                  vtkPointData *outputPD);
  void GenerateEvenStencil (vtkIdType p1, vtkPolyData *polys,
                            vtkIdList *stencilIds, double *weights);
  void GenerateOddStencil (vtkIdType p1, vtkIdType p2, vtkPolyData *polys,
                           vtkIdList *stencilIds, double *weights);

  void ComputeInputUpdateExtents(vtkDataObject *output);
private:
  vtkLoopSubdivisionFilter(const vtkLoopSubdivisionFilter&);  // Not implemented.
  void operator=(const vtkLoopSubdivisionFilter&);  // Not implemented.
};

#endif

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