vtkExtentSplitter.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkExtentSplitter.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 vtkExtentSplitter_h
#define vtkExtentSplitter_h
 
#include "vtkCommonExecutionModelModule.h" // For export macro
#include "vtkObject.h"
 
class vtkExtentSplitterInternals;
 
class VTKCOMMONEXECUTIONMODEL_EXPORT vtkExtentSplitter : public vtkObject
{
public:
  vtkTypeMacro(vtkExtentSplitter, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent) override;
  static vtkExtentSplitter* New();
 
 
  void AddExtentSource(int id, int priority, int x0, int x1, int y0, int y1, int z0, int z1);
  void AddExtentSource(int id, int priority, int* extent);
  void RemoveExtentSource(int id);
  void RemoveAllExtentSources();
 
 
  void AddExtent(int x0, int x1, int y0, int y1, int z0, int z1);
  void AddExtent(int* extent);
 
  int ComputeSubExtents();
 
  int GetNumberOfSubExtents();
 
 
  int* GetSubExtent(int index) VTK_SIZEHINT(6);
  void GetSubExtent(int index, int* extent);
 
  int GetSubExtentSource(int index);
 
 
  vtkGetMacro(PointMode, vtkTypeBool);
  vtkSetMacro(PointMode, vtkTypeBool);
  vtkBooleanMacro(PointMode, vtkTypeBool);
 
protected:
  vtkExtentSplitter();
  ~vtkExtentSplitter() override;
 
  // Internal utility methods.
  void SplitExtent(int* extent, int* subextent);
  int IntersectExtents(const int* extent1, const int* extent2, int* result);
  int Min(int a, int b);
  int Max(int a, int b);
 
  // Internal implementation data.
  vtkExtentSplitterInternals* Internal;
 
  // On if reading only all points (but not always all cells) is
  // necessary.  Used for reading volumes of planar slices storing
  // only point data.
  vtkTypeBool PointMode;
 
private:
  vtkExtentSplitter(const vtkExtentSplitter&) = delete;
  void operator=(const vtkExtentSplitter&) = delete;
};
 
#endif