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);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
protected:
  vtkButterflySubdivisionFilter() = default;
  ~vtkButterflySubdivisionFilter() override = default;
 
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