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95 lines
2.3 KiB
C++
95 lines
2.3 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkTreeIterator.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 vtkTreeIterator
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* @brief Abstract class for iterator over a vtkTree.
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*
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*
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* The base class for tree iterators vtkTreeBFSIterator and vtkTreeDFSIterator.
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*
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* After setting up the iterator, the normal mode of operation is to
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* set up a <code>while(iter->HasNext())</code> loop, with the statement
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* <code>vtkIdType vertex = iter->Next()</code> inside the loop.
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*
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* @sa
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* vtkTreeBFSIterator vtkTreeDFSIterator
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*/
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#ifndef vtkTreeIterator_h
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#define vtkTreeIterator_h
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#include "vtkCommonDataModelModule.h" // For export macro
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#include "vtkObject.h"
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class vtkTree;
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class VTKCOMMONDATAMODEL_EXPORT vtkTreeIterator : public vtkObject
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{
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public:
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vtkTypeMacro(vtkTreeIterator, vtkObject);
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void PrintSelf(ostream& os, vtkIndent indent) override;
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//@{
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/**
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* Set/get the graph to iterate over.
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*/
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void SetTree(vtkTree* graph);
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vtkGetMacro(Tree, vtkTree*);
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//@}
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//@{
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/**
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* The start vertex of the traversal.
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* The tree iterator will only iterate over the subtree rooted at vertex.
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* If not set (or set to a negative value), starts at the root of the tree.
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*/
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void SetStartVertex(vtkIdType vertex);
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vtkGetMacro(StartVertex, vtkIdType);
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//@}
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/**
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* The next vertex visited in the graph.
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*/
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vtkIdType Next();
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/**
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* Return true when all vertices have been visited.
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*/
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bool HasNext();
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/**
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* Reset the iterator to its start vertex.
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*/
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void Restart();
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protected:
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vtkTreeIterator();
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~vtkTreeIterator() override;
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virtual void Initialize() = 0;
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virtual vtkIdType NextInternal() = 0;
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vtkTree* Tree;
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vtkIdType StartVertex;
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vtkIdType NextId;
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private:
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vtkTreeIterator(const vtkTreeIterator&) = delete;
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void operator=(const vtkTreeIterator&) = delete;
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};
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#endif
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