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vtkImageIterator.h
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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.
=========================================================================*/
/**
* @class vtkImageIterator
* @brief a simple image iterator
*
* This is a simple image iterator that can be used to iterate over an
* image. This should be used internally by Filter writers.
*
* @sa
* vtkImageData vtkImageProgressIterator
*/
#ifndef vtkImageIterator_h
#define vtkImageIterator_h
#include "vtkCommonDataModelModule.h" // For export macro
#include "vtkSystemIncludes.h"
class vtkImageData;
template<class DType>
class VTKCOMMONDATAMODEL_EXPORT vtkImageIterator
{
public:
typedef DType *SpanIterator;
/**
* Default empty constructor, useful only when creating an array of iterators
* You need to call Initialize afterward
*/
vtkImageIterator();
/**
* Create an image iterator for a given image data and a given extent
*/
vtkImageIterator(vtkImageData *id, int *ext);
/**
* Initialize the image iterator for a given image data, and given extent
*/
void Initialize(vtkImageData *id, int *ext);
/**
* Move the iterator to the next span
*/
void NextSpan();
/**
* Return an iterator (pointer) for the span
*/
SpanIterator BeginSpan()
{
return this->Pointer;
}
/**
* Return an iterator (pointer) for the end of the span
*/
SpanIterator EndSpan()
{
return this->SpanEndPointer;
}
/**
* Test if the end of the extent has been reached
*/
vtkTypeBool IsAtEnd()
{
return (this->Pointer >= this->EndPointer);
}
protected:
DType *Pointer;
DType *SpanEndPointer;
DType *SliceEndPointer;
DType *EndPointer;
vtkIdType Increments[3];
vtkIdType ContinuousIncrements[3];
};
#ifndef vtkImageIterator_cxx
#ifdef _MSC_VER
#pragma warning (push)
// The following is needed when the vtkImageIterator is declared
// dllexport and is used from another class in vtkCommonCore
#pragma warning (disable: 4910) // extern and dllexport incompatible
#endif
vtkExternTemplateMacro(
extern template class VTKCOMMONDATAMODEL_EXPORT vtkImageIterator
)
#ifdef _MSC_VER
#pragma warning (pop)
#endif
#endif
#endif
// VTK-HeaderTest-Exclude: vtkImageIterator.h