vtkStructuredExtent.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkStructuredExtent.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 vtkStructuredExtent_h
#define vtkStructuredExtent_h
 
#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkObject.h"
 
class VTKCOMMONDATAMODEL_EXPORT vtkStructuredExtent : public vtkObject
{
public:
  static vtkStructuredExtent* New();
  vtkTypeMacro(vtkStructuredExtent, vtkObject);
  void PrintSelf(ostream& os, vtkIndent indent) override;
 
  static void Clamp(int ext[6], const int wholeExt[]);
 
  static bool StrictlySmaller(const int ext[6], const int wholeExt[6]);
 
  static bool Smaller(const int ext[6], const int wholeExt[6]);
 
  static void Grow(int ext[6], int count);
 
  static void Grow(int ext[6], int count, int wholeExt[6]);
 
  static void Transform(int ext[6], int wholeExt[6]);
 
  static void GetDimensions(const int ext[6], int dims[3]);
 
protected:
  vtkStructuredExtent();
  ~vtkStructuredExtent() override;
 
private:
  vtkStructuredExtent(const vtkStructuredExtent&) = delete;
  void operator=(const vtkStructuredExtent&) = delete;
};
 
//----------------------------------------------------------------------------
inline void vtkStructuredExtent::Clamp(int ext[6], const int wholeExt[6])
{
  ext[0] = (ext[0] < wholeExt[0]) ? wholeExt[0] : ext[0];
  ext[1] = (ext[1] > wholeExt[1]) ? wholeExt[1] : ext[1];
 
  ext[2] = (ext[2] < wholeExt[2]) ? wholeExt[2] : ext[2];
  ext[3] = (ext[3] > wholeExt[3]) ? wholeExt[3] : ext[3];
 
  ext[4] = (ext[4] < wholeExt[4]) ? wholeExt[4] : ext[4];
  ext[5] = (ext[5] > wholeExt[5]) ? wholeExt[5] : ext[5];
}
 
//----------------------------------------------------------------------------
inline bool vtkStructuredExtent::Smaller(const int ext[6], const int wholeExt[6])
{
  if (ext[0] < wholeExt[0] || ext[0] > wholeExt[0 + 1] || ext[0 + 1] < wholeExt[0] ||
    ext[0 + 1] > wholeExt[0 + 1])
  {
    return false;
  }
 
  if (ext[2] < wholeExt[2] || ext[2] > wholeExt[2 + 1] || ext[2 + 1] < wholeExt[2] ||
    ext[2 + 1] > wholeExt[2 + 1])
  {
    return false;
  }
 
  if (ext[4] < wholeExt[4] || ext[4] > wholeExt[4 + 1] || ext[4 + 1] < wholeExt[4] ||
    ext[4 + 1] > wholeExt[4 + 1])
  {
    return false;
  }
 
  return true;
}
 
//----------------------------------------------------------------------------
inline bool vtkStructuredExtent::StrictlySmaller(const int ext[6], const int wholeExt[6])
{
  if (!vtkStructuredExtent::Smaller(ext, wholeExt))
  {
    return false;
  }
 
  if (ext[0] > wholeExt[0] || ext[1] < wholeExt[1] || ext[2] > wholeExt[2] ||
    ext[3] < wholeExt[3] || ext[4] > wholeExt[4] || ext[5] < wholeExt[5])
  {
    return true;
  }
 
  return false;
}
 
//----------------------------------------------------------------------------
inline void vtkStructuredExtent::Grow(int ext[6], int count)
{
  ext[0] -= count;
  ext[2] -= count;
  ext[4] -= count;
 
  ext[1] += count;
  ext[3] += count;
  ext[5] += count;
}
 
//----------------------------------------------------------------------------
inline void vtkStructuredExtent::Grow(int ext[6], int count, int wholeExt[6])
{
  vtkStructuredExtent::Grow(ext, count);
  vtkStructuredExtent::Clamp(ext, wholeExt);
}
 
//----------------------------------------------------------------------------
inline void vtkStructuredExtent::Transform(int ext[6], int wholeExt[6])
{
  ext[0] -= wholeExt[0];
  ext[1] -= wholeExt[0];
 
  ext[2] -= wholeExt[2];
  ext[3] -= wholeExt[2];
 
  ext[4] -= wholeExt[4];
  ext[5] -= wholeExt[4];
}
 
//----------------------------------------------------------------------------
inline void vtkStructuredExtent::GetDimensions(const int ext[6], int dims[3])
{
  dims[0] = ext[1] - ext[0] + 1;
  dims[1] = ext[3] - ext[2] + 1;
  dims[2] = ext[5] - ext[4] + 1;
}
 
#endif