vtkLoopSubdivisionFilter.h

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// SPDX-FileCopyrightText: Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
// SPDX-License-Identifier: BSD-3-Clause
#ifndef vtkLoopSubdivisionFilter_h
#define vtkLoopSubdivisionFilter_h
 
#include "vtkApproximatingSubdivisionFilter.h"
#include "vtkFiltersModelingModule.h" // For export macro
 
VTK_ABI_NAMESPACE_BEGIN
class vtkPolyData;
class vtkIntArray;
class vtkPoints;
class vtkIdList;
 
class VTKFILTERSMODELING_EXPORT vtkLoopSubdivisionFilter : public vtkApproximatingSubdivisionFilter
{
public:
 
  static vtkLoopSubdivisionFilter* New();
  vtkTypeMacro(vtkLoopSubdivisionFilter, vtkApproximatingSubdivisionFilter);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
protected:
  vtkLoopSubdivisionFilter() = default;
  ~vtkLoopSubdivisionFilter() override = default;
 
  int GenerateSubdivisionPoints(vtkPolyData* inputDS, vtkIntArray* edgeData, vtkPoints* outputPts,
    vtkPointData* outputPD) override;
  int GenerateEvenStencil(vtkIdType p1, vtkPolyData* polys, vtkIdList* stencilIds, double* weights);
  void GenerateOddStencil(
    vtkIdType p1, vtkIdType p2, vtkPolyData* polys, vtkIdList* stencilIds, double* weights);
 
  int RequestUpdateExtent(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
 
private:
  vtkLoopSubdivisionFilter(const vtkLoopSubdivisionFilter&) = delete;
  void operator=(const vtkLoopSubdivisionFilter&) = delete;
};
 
VTK_ABI_NAMESPACE_END
#endif