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/*=========================================================================
Copyright (c) Kitware, Inc.
All rights reserved.
See Copyright.txt or http://www.kitware.com/VolViewCopyright.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.
=========================================================================*/
// Include blockers needed since vtkQueue.h includes this file
// when VTK_NO_EXPLICIT_TEMPLATE_INSTANTIATION is defined.
#ifndef __vtkQueueIterator_txx
#define __vtkQueueIterator_txx
#include "vtkQueueIterator.h"
#include "vtkAbstractIterator.txx"
#include "vtkQueue.h"
//----------------------------------------------------------------------------
template <class DType>
vtkQueueIterator<DType> *vtkQueueIterator<DType>::New()
{
#ifdef VTK_DEBUG_LEAKS
vtkDebugLeaks::ConstructClass("vtkQueueIterator");
#endif
return new vtkQueueIterator<DType>();
}
//----------------------------------------------------------------------------
template<class DType>
void vtkQueueIterator<DType>::InitTraversal()
{
this->GoToFirstItem();
}
//----------------------------------------------------------------------------
template<class DType>
int vtkQueueIterator<DType>::GetKey(vtkIdType& key)
{
if ( this->Index == -1 )
{
return VTK_ERROR;
}
vtkQueue<DType> *llist = static_cast<vtkQueue<DType>*>(this->Container);
if ( this->Number == llist->NumberOfItems ) { return VTK_ERROR; }
key = this->Number;
return VTK_OK;
}
//----------------------------------------------------------------------------
template<class DType>
int vtkQueueIterator<DType>::GetData(DType& data)
{
if ( this->Index == -1 )
{
return VTK_ERROR;
}
vtkQueue<DType> *llist = static_cast<vtkQueue<DType>*>(this->Container);
if ( this->Index == llist->NumberOfItems ) { return VTK_ERROR; }
data = llist->Array[this->Index];
return VTK_OK;
}
//----------------------------------------------------------------------------
template<class DType>
int vtkQueueIterator<DType>::SetData(const DType& data)
{
if ( this->Index == -1 )
{
return VTK_ERROR;
}
vtkQueue<DType> *llist = static_cast<vtkQueue<DType>*>(this->Container);
if ( this->Index == llist->NumberOfItems ) { return VTK_ERROR; }
llist->Array[this->Index] = data;
return VTK_OK;
}
//----------------------------------------------------------------------------
template<class DType>
int vtkQueueIterator<DType>::IsDoneWithTraversal()
{
if ( this->Index == -1 )
{
return 1;
}
vtkQueue<DType> *llist = static_cast<vtkQueue<DType>*>(this->Container);
return (this->Number >= llist->NumberOfItems)? 1:0;
}
//----------------------------------------------------------------------------
template<class DType>
void vtkQueueIterator<DType>::GoToNextItem()
{
vtkQueue<DType> *llist = static_cast<vtkQueue<DType>*>(this->Container);
if(this->Number < llist->NumberOfItems)
{
this->Index = (this->Index + 1) % llist->GetSize();
this->Number ++;
}
else
{
this->Index = llist->End;
this->Number = 0;
}
}
//----------------------------------------------------------------------------
template<class DType>
void vtkQueueIterator<DType>::GoToPreviousItem()
{
vtkQueue<DType> *llist = static_cast<vtkQueue<DType>*>(this->Container);
if(this->Number > 0)
{
this->Index = (this->Index - 1) % llist->GetSize();
this->Number --;
}
else
{
this->Index = llist->Start;
this->Number = llist->NumberOfItems-1;
}
}
//----------------------------------------------------------------------------
template<class DType>
void vtkQueueIterator<DType>::GoToFirstItem()
{
vtkQueue<DType> *llist = static_cast<vtkQueue<DType>*>(this->Container);
this->Index = llist->End;
this->Number = 0;
}
//----------------------------------------------------------------------------
template<class DType>
void vtkQueueIterator<DType>::GoToLastItem()
{
vtkQueue<DType> *llist = static_cast<vtkQueue<DType>*>(this->Container);
this->Index = llist->Start;
this->Number = llist->NumberOfItems-1;
}
//----------------------------------------------------------------------------
#if defined ( _MSC_VER )
template <class DType>
vtkQueueIterator<DType>::vtkQueueIterator(const vtkQueueIterator<DType>&){}
template <class DType>
void vtkQueueIterator<DType>::operator=(const vtkQueueIterator<DType>&){}
#endif
#endif
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