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66 lines
2.1 KiB
66 lines
2.1 KiB
/*=========================================================================
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Program: Visualization Toolkit
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Module: $RCSfile: vtkCompositeDataIterator.h,v $
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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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// .NAME vtkCompositeDataIterator - abstract superclass for composite data iterators
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// .SECTION Description
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// vtkCompositeDataIterator provides an interface for accessing datasets
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// in a collection (vtkCompositeDataIterator). Sub-classes provide the
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// actual implementation.
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#ifndef __vtkCompositeDataIterator_h
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#define __vtkCompositeDataIterator_h
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#include "vtkObject.h"
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class vtkDataObject;
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class VTK_FILTERING_EXPORT vtkCompositeDataIterator : public vtkObject
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{
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public:
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vtkTypeRevisionMacro(vtkCompositeDataIterator,vtkObject);
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void PrintSelf(ostream& os, vtkIndent indent);
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// Description:
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// Move the iterator to the beginning of the collection.
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void InitTraversal() { this->GoToFirstItem(); }
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// Description:
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// Move the iterator to the beginning of the collection.
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virtual void GoToFirstItem() = 0;
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// Description:
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// Move the iterator to the next item in the collection.
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virtual void GoToNextItem() = 0;
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// Description:
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// Test whether the iterator is currently pointing to a valid
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// item. Returns 1 for yes, 0 for no.
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virtual int IsDoneWithTraversal() = 0;
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// Description:
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// Get the current item. Valid only when IsDoneWithTraversal()
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// returns 1.
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virtual vtkDataObject* GetCurrentDataObject() = 0;
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protected:
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vtkCompositeDataIterator();
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virtual ~vtkCompositeDataIterator();
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private:
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vtkCompositeDataIterator(const vtkCompositeDataIterator&); // Not implemented.
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void operator=(const vtkCompositeDataIterator&); // Not implemented.
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};
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#endif
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