vtkButterflySubdivisionFilter.h

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

  Program:   Visualization Toolkit
  Module:    vtkButterflySubdivisionFilter.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 vtkButterflySubdivisionFilter_h
#define vtkButterflySubdivisionFilter_h

#include "vtkFiltersModelingModule.h" // For export macro
#include "vtkInterpolatingSubdivisionFilter.h"

class vtkCellArray;
class vtkIdList;
class vtkIntArray;

class VTKFILTERSMODELING_EXPORT vtkButterflySubdivisionFilter : public vtkInterpolatingSubdivisionFilter
{
public:

  static vtkButterflySubdivisionFilter *New();
  vtkTypeMacro(vtkButterflySubdivisionFilter,vtkInterpolatingSubdivisionFilter);

protected:
  vtkButterflySubdivisionFilter () {}
  ~vtkButterflySubdivisionFilter () override {}

private:
  int GenerateSubdivisionPoints(vtkPolyData *inputDS, vtkIntArray *edgeData,
                                vtkPoints *outputPts, vtkPointData *outputPD) override;
  void GenerateButterflyStencil(vtkIdType p1, vtkIdType p2, vtkPolyData *polys,
                                vtkIdList *stencilIds, double *weights);
  void GenerateLoopStencil(vtkIdType p1, vtkIdType p2, vtkPolyData *polys,
                           vtkIdList *stencilIds, double *weights);
  void GenerateBoundaryStencil(vtkIdType p1, vtkIdType p2, vtkPolyData *polys,
                               vtkIdList *stencilIds, double *weights);

private:
  vtkButterflySubdivisionFilter(const vtkButterflySubdivisionFilter&) = delete;
  void operator=(const vtkButterflySubdivisionFilter&) = delete;
};

#endif


// VTK-HeaderTest-Exclude: vtkButterflySubdivisionFilter.h