vtkVoxelContoursToSurfaceFilter.h

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

  Program:   Visualization Toolkit
  Module:    vtkVoxelContoursToSurfaceFilter.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 vtkVoxelContoursToSurfaceFilter_h
#define vtkVoxelContoursToSurfaceFilter_h

#include "vtkFiltersGeneralModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"

class VTKFILTERSGENERAL_EXPORT vtkVoxelContoursToSurfaceFilter : public vtkPolyDataAlgorithm
{
public:
  static vtkVoxelContoursToSurfaceFilter *New();
  vtkTypeMacro(vtkVoxelContoursToSurfaceFilter,vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) override;


  vtkSetMacro( MemoryLimitInBytes, int );
  vtkGetMacro( MemoryLimitInBytes, int );

  vtkSetVector3Macro( Spacing, double );
  vtkGetVectorMacro( Spacing, double, 3 );

protected:
  vtkVoxelContoursToSurfaceFilter();
  ~vtkVoxelContoursToSurfaceFilter() override;

  int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *) override;

  int     MemoryLimitInBytes;

  double   Spacing[3];

  double   *LineList;
  int     LineListLength;
  int     LineListSize;

  double   *SortedXList;
  double   *SortedYList;
  int     SortedListSize;

  int     *WorkingList;
  int     WorkingListLength;

  double   *IntersectionList;
  int     IntersectionListLength;

  void    AddLineToLineList( double x1, double y1, double x2, double y2 );
  void    SortLineList();

  void    CastLines( float *slice, double gridOrigin[3],
                     int gridSize[3], int type );

  void    PushDistances( float *ptr, int gridSize[3], int chunkSize );
private:
  vtkVoxelContoursToSurfaceFilter(const vtkVoxelContoursToSurfaceFilter&) = delete;
  void operator=(const vtkVoxelContoursToSurfaceFilter&) = delete;
};

#endif