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101 lines
2.3 KiB
C++
101 lines
2.3 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkImageIterator.h
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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/**
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* @class vtkImageIterator
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* @brief a simple image iterator
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*
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* This is a simple image iterator that can be used to iterate over an
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* image. This should be used internally by Filter writers.
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*
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* @sa
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* vtkImageData vtkImageProgressIterator
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*/
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#ifndef vtkImageIterator_h
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#define vtkImageIterator_h
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#include "vtkCommonDataModelModule.h" // For export macro
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#include "vtkSystemIncludes.h"
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class vtkImageData;
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template<class DType>
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class VTKCOMMONDATAMODEL_EXPORT vtkImageIterator
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{
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public:
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typedef DType *SpanIterator;
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/**
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* Default empty constructor, useful only when creating an array of iterators
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* You need to call Initialize afterward
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*/
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vtkImageIterator();
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/**
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* Create an image iterator for a given image data and a given extent
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*/
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vtkImageIterator(vtkImageData *id, int *ext);
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/**
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* Initialize the image iterator for a given image data, and given extent
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*/
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void Initialize(vtkImageData *id, int *ext);
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/**
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* Move the iterator to the next span
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*/
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void NextSpan();
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/**
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* Return an iterator (pointer) for the span
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*/
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SpanIterator BeginSpan()
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{
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return this->Pointer;
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}
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/**
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* Return an iterator (pointer) for the end of the span
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*/
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SpanIterator EndSpan()
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{
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return this->SpanEndPointer;
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}
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/**
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* Test if the end of the extent has been reached
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*/
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int IsAtEnd()
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{
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return (this->Pointer >= this->EndPointer);
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}
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protected:
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DType *Pointer;
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DType *SpanEndPointer;
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DType *SliceEndPointer;
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DType *EndPointer;
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vtkIdType Increments[3];
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vtkIdType ContinuousIncrements[3];
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};
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#ifndef vtkImageIterator_cxx
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vtkExternTemplateMacro(
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extern template class VTKCOMMONDATAMODEL_EXPORT vtkImageIterator
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)
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#endif
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#endif
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// VTK-HeaderTest-Exclude: vtkImageIterator.h
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