dox/Filtering/vtkImageIterator.h

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

  Program:   Visualization Toolkit
  Module:    vtkImageIterator.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 __vtkImageIterator_h
#define __vtkImageIterator_h

#include "vtkSystemIncludes.h"
class vtkImageData;

template<class DType>
class VTK_FILTERING_EXPORT vtkImageIterator
{
public:
  typedef DType *SpanIterator;

  vtkImageIterator();

  vtkImageIterator(vtkImageData *id, int *ext);

  void Initialize(vtkImageData *id, int *ext);

  void NextSpan();


  SpanIterator BeginSpan()
    {
    return this->Pointer;
    }


  SpanIterator EndSpan()
    {
    return this->SpanEndPointer;
    }


  int IsAtEnd()
    {
    return (this->Pointer >= this->EndPointer);
    }

protected:
  DType *Pointer;
  DType *SpanEndPointer;
  DType *SliceEndPointer;
  DType *EndPointer;
  vtkIdType    Increments[3];
  vtkIdType    ContinuousIncrements[3];
};

#ifdef VTK_NO_EXPLICIT_TEMPLATE_INSTANTIATION
#include "vtkImageIterator.txx"
#endif

#endif