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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkRootTreeIterator.h.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:47 $ |
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Version: $Revision: 1.4 $ |
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Copyright (c) Insight Software Consortium. All rights reserved. |
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See ITKCopyright.txt or http://www.itk.org/HTML/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 notices for more information. |
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=========================================================================*/ |
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#ifndef __itkRootTreeIterator_h |
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#define __itkRootTreeIterator_h |
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#include <itkTreeIteratorBase.h> |
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NMS |
namespace itk{ |
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template <class TTreeType> |
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class RootTreeIterator : public TreeIteratorBase<TTreeType> |
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{ |
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public: |
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/** Typedefs */ |
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typedef TreeIteratorBase<TTreeType> Superclass; |
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TDA |
typedef TTreeType TreeType; |
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TDA |
typedef typename TTreeType::ValueType ValueType; |
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TDA |
typedef typename Superclass::TreeNodeType TreeNodeType; |
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/** Constructor */ |
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RootTreeIterator( TreeType* tree, const TreeNodeType* start=NULL); |
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/** Return the type of the iterator */ |
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int GetType() const; |
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/** Clone function */ |
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TreeIteratorBase<TTreeType>* Clone(); |
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protected: |
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/** Return the next node */ |
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const ValueType& Next(); |
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/** Return true if the next node exists */ |
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bool HasNext() const; |
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private: |
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/** Find the next node */ |
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const TreeNodeType* FindNextNode() const; |
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}; |
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/** Constructor */ |
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template <class TTreeType> |
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LEN |
RootTreeIterator<TTreeType>::RootTreeIterator(TTreeType* tree, const TreeNodeType* start) |
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IND |
**:TreeIteratorBase<TTreeType>(tree, start) |
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{ |
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if(start) |
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{ |
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this->m_Begin = const_cast<TreeNode<ValueType>*>(start); |
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} |
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this->m_Root = tree->GetRoot(); |
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this->m_Position = this->m_Begin; |
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} |
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/** Return the type of the iterator */ |
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template <class TTreeType> |
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int |
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RootTreeIterator<TTreeType>::GetType() const |
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{ |
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return TreeIteratorBase<TTreeType>::ROOT; |
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} |
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/** Return true if the next node exists */ |
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template <class TTreeType> |
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bool |
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RootTreeIterator<TTreeType>::HasNext() const |
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{ |
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if ( const_cast<TreeNodeType*>(FindNextNode()) != NULL ) |
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{ |
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return true; |
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} |
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return false; |
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} |
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/** Go to the next node */ |
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template <class TTreeType> |
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const typename RootTreeIterator<TTreeType>::ValueType& |
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RootTreeIterator<TTreeType>::Next() |
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{ |
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this->m_Position = const_cast<TreeNodeType*>(FindNextNode()); |
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return this->m_Position->Get(); |
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} |
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/** Find the next node */ |
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template <class TTreeType> |
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const typename RootTreeIterator<TTreeType>::TreeNodeType* |
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RootTreeIterator<TTreeType>::FindNextNode() const |
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{ |
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if ( this->m_Position == NULL ) |
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{ |
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return NULL; |
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} |
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if ( this->m_Position == this->m_Root ) |
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{ |
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return NULL; |
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} |
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return this->m_Position->GetParent(); |
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} |
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/** Clone function */ |
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template <class TTreeType> |
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TreeIteratorBase<TTreeType>* RootTreeIterator<TTreeType>::Clone() |
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{ |
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LEN |
RootTreeIterator<TTreeType>* clone = new RootTreeIterator<TTreeType>( const_cast<TTreeType*>(this->m_Tree), this->m_Position ); |
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*clone = *this; |
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return clone; |
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} |
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} // end namespace itk |
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#endif |
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