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/*=========================================================================
Program: Visualization Toolkit
Module: vtkArrayIterator.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 vtkArrayIterator
* @brief Abstract superclass to iterate over elements
* in an vtkAbstractArray.
*
*
* vtkArrayIterator is used to iterate over elements in any
* vtkAbstractArray subclass. The vtkArrayIteratorTemplateMacro is used
* to centralize the set of types supported by Execute methods. It also
* avoids duplication of long switch statement case lists.
*
* Note that in this macro VTK_TT is defined to be the type of the
* iterator for the given type of array. One must include the
* vtkArrayIteratorIncludes.h header file to provide for extending of
* this macro by addition of new iterators.
*
* Example usage:
* \code
* vtkArrayIter* iter = array->NewIterator();
* switch(array->GetDataType())
* {
* vtkArrayIteratorTemplateMacro(myFunc(static_cast<VTK_TT*>(iter), arg2));
* }
* iter->Delete();
* \endcode
*/
#ifndef vtkArrayIterator_h
#define vtkArrayIterator_h
#include "vtkCommonCoreModule.h" // For export macro
#include "vtkObject.h"
class vtkAbstractArray;
class VTKCOMMONCORE_EXPORT vtkArrayIterator : public vtkObject
{
public:
vtkTypeMacro(vtkArrayIterator, vtkObject);
void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE;
/**
* Set the array this iterator will iterate over.
* After Initialize() has been called, the iterator is valid
* so long as the Array has not been modified
* (except using the iterator itself).
* If the array is modified, the iterator must be re-intialized.
*/
virtual void Initialize(vtkAbstractArray* array) = 0;
/**
* Get the data type from the underlying array. Returns 0 if
* no underlying array is present.
*/
virtual int GetDataType()=0;
protected:
vtkArrayIterator();
~vtkArrayIterator() VTK_OVERRIDE;
private:
vtkArrayIterator(const vtkArrayIterator&) VTK_DELETE_FUNCTION;
void operator=(const vtkArrayIterator&) VTK_DELETE_FUNCTION;
};
#endif
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