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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkOctreeNode.cxx,v $
Language: C++
Date: $Date: 2006-10-30 18:33:06 $
Version: $Revision: 1.4 $
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/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 notices for more information.
=========================================================================*/
/* Local Include Files */
#include "itkOctree.h"
#include "itkOctreeNode.h"
namespace itk {
/*
* ====================================================================================
* ====================================================================================
* ====================================================================================
*/
OctreeNode::OctreeNode(void)
{
m_Parent = 0;
m_Branch = 0;
}
OctreeNode::~OctreeNode(void)
{
this->RemoveChildren();
}
OctreeNode & OctreeNode::GetChild(const enum LeafIdentifier ChildID) const
{
return *m_Branch->GetLeaf(ChildID);
}
OctreeNode & OctreeNode::GetChild(const enum LeafIdentifier ChildID)
{
return *m_Branch->GetLeaf(ChildID);
}
int OctreeNode::GetColor(void) const
{
int x = reinterpret_cast<const char *>(m_Branch) - m_Parent->GetColorTable();
//
// you'll want to indicate that the branch
// is a subtree and not in fact a color.
if(x >= 0 && x < m_Parent->GetColorTableSize())
return x;
return -1;
}
void OctreeNode::SetColor(int color)
{
this->RemoveChildren();
m_Branch = reinterpret_cast<OctreeNodeBranch *>
(const_cast<char *>(m_Parent->GetColorTable()) + color);
return;
}
void OctreeNode::SetBranch(OctreeNodeBranch * NewBranch)
{
this->RemoveChildren();
m_Branch=NewBranch;
return;
}
/**
* \brief Determines if the current node is colored
* \param void
* \return bool true if this node is colored
*/
bool OctreeNode::IsNodeColored(void) const
{
const char *colorTable = m_Parent->GetColorTable();
const OctreeNodeBranch *first =
reinterpret_cast<const OctreeNodeBranch *>(&(colorTable[0]));
const OctreeNodeBranch *last =
reinterpret_cast<const OctreeNodeBranch *>(&(colorTable[m_Parent->GetColorTableSize()-1]));
if(this->m_Branch >= first && this->m_Branch <= last)
return true;
return false;
}
void OctreeNode::RemoveChildren(void)
{
if(m_Branch != 0 && !this->IsNodeColored())
{
delete m_Branch;
m_Branch = reinterpret_cast<OctreeNodeBranch *>
(&(const_cast<char *>(m_Parent->GetColorTable())[0]));
}
}
} //End of itk Namespace
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