/usr/include/ITK-4.5/itkOctree.hxx is in libinsighttoolkit4-dev 4.5.0-3.
This file is owned by root:root, with mode 0o644.
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*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef __itkOctree_hxx
#define __itkOctree_hxx
#include "itkOctree.h"
namespace itk
{
template< typename TPixel, unsigned int ColorTableSize, typename MappingFunctionType >
Octree< TPixel, ColorTableSize,
MappingFunctionType >::Octree(void):m_Plane(UNKNOWN_PLANE), m_Width(0), m_Depth(0), m_Tree()
{
m_TrueDims[0] = 0;
m_TrueDims[1] = 1;
m_TrueDims[2] = 2;
m_Tree.SetParentOctree(this);
}
template< typename TPixel, unsigned int ColorTableSize, typename MappingFunctionType >
Octree< TPixel, ColorTableSize, MappingFunctionType >::
~Octree(void) { /*Nothing to be done here*/ }
template< typename TPixel, unsigned int ColorTableSize, typename MappingFunctionType >
void
Octree< TPixel, ColorTableSize, MappingFunctionType >::SetTrueDims(const unsigned int Dim0, const unsigned int Dim1,
const unsigned int Dim2)
{
this->m_TrueDims[0] = Dim0;
this->m_TrueDims[1] = Dim1;
this->m_TrueDims[2] = Dim2;
}
/** This is moving bits to get the values of the 8 octants
* Possible values are the 3 bits to be set.
* 0 000 Contains origin
* 1 001
* 2 010
* 3 011
* 4 100
* 5 101
* 6 110
* 7 111 Contains extents
* ....^^^
* ....|| \This value is 1 if requested X voxel is greater than X
* .... centerline of subcube
* ....| \This value is 1 if requested Y voxel is greater than Y
* .......centerline of subcube
* .... \This value is 1 if requested Z voxel is greater than Z centerline
* .......of subcube
* \author Hans J. Johnson, adapted from Vincent A. Magnotta
* \param VoxX The desired voxel
* \param VoxY The desired voxel
* \param VoxZ The desired voxel
* \param CenterLineX The division line between octants
* \param CenterLineY The division line between octants
* \param CenterLineZ The division line between octants
* \return The octant that the voxel falls into.
*/
inline unsigned int OCTREE_OCTANT(const unsigned int VoxX, const unsigned int CenterLineX,
const unsigned int VoxY, const unsigned int CenterLineY,
const unsigned int VoxZ, const unsigned int CenterLineZ)
{
return (
(
( static_cast< unsigned int >( VoxZ >= CenterLineZ ) << 2 )
| ( static_cast< unsigned int >( VoxY >= CenterLineY ) << 1 )
)
| ( static_cast< unsigned int >( VoxX >= CenterLineX ) )
);
}
/**
* \defgroup Octant directional identifying functions
* These functions determine if the directions are in the "lower" or
* "upper" portion of the Octree in the given directions.
* @{
*/
inline unsigned int XF(const unsigned int octantID)
{
return octantID & 1; //Just return 1 if 0th bit is a one
}
inline unsigned int YF(const unsigned int octantID)
{
return ( octantID >> 1 ) & 1; //Just return 1 if 1st bit is a one
}
inline unsigned int ZF(const unsigned int octantID)
{
return ( octantID >> 2 ) & 1; //Just return 1 if 2nd bit is a one
}
/** @} */ // End of defgroup
template< typename TPixel, unsigned int ColorTableSize, typename MappingFunctionType >
int
Octree< TPixel, ColorTableSize, MappingFunctionType >::GetValue(const unsigned int Dim0,
const unsigned int Dim1,
const unsigned int Dim2)
{
if ( ( Dim2 >= this->m_TrueDims[2] )
|| ( Dim1 >= this->m_TrueDims[1] ) || ( Dim0 >= this->m_TrueDims[0] ) )
{
return 0;
}
//Define CurrentOctreeNode at the Octree head Node
OctreeNode *CurrentOctreeNode = &m_Tree;
//Define the origin of current OctreeNode
unsigned int ox = 0, oy = 0, oz = 0;
//Define the halfwidth, this will be changed inside of while loop
unsigned int halfwidth = this->m_Width;
while ( ( CurrentOctreeNode->IsNodeColored() ) == false )
{
//NOTE: halfwidth=halfwidth/2 is the same as halfwidth >> 1
halfwidth = halfwidth >> 1;
const unsigned int octantID =
OCTREE_OCTANT (Dim0, ox + halfwidth, Dim1,
oy + halfwidth, Dim2, oz + halfwidth);
//Determine new origin for next child.
ox = ox + XF(octantID) * halfwidth;
oy = oy + YF(octantID) * halfwidth;
oz = oz + ZF(octantID) * halfwidth;
CurrentOctreeNode =
&CurrentOctreeNode->GetChild( static_cast< enum LeafIdentifier >( octantID ) );
}
return CurrentOctreeNode->GetColor();
}
template< typename TPixel, unsigned int ColorTableSize, typename MappingFunctionType >
OctreeNodeBranch *
Octree< TPixel, ColorTableSize, MappingFunctionType >::maskToOctree(const TPixel *Mask, unsigned width, unsigned x,
unsigned y, unsigned z, unsigned xsize,
unsigned ysize, unsigned zsize)
{
if ( ( x >= xsize ) || ( y >= ysize ) || ( z >= zsize ) )
{
return reinterpret_cast< OctreeNodeBranch * >( m_ColorTable
+ B2_MASKFILE_BLACK );
}
if ( width == 1 )
{
return reinterpret_cast< OctreeNodeBranch * >
( m_ColorTable + m_MappingFunction.Evaluate(&Mask[z * ysize * xsize + y * xsize + x]) );
}
width /= 2;
OctreeNodeBranch *nodeArray[8];
nodeArray[0] = this->maskToOctree (Mask, width, x, y, z,
xsize, ysize, zsize);
nodeArray[1] = this->maskToOctree (Mask, width, x + width, y, z,
xsize, ysize, zsize);
nodeArray[2] = this->maskToOctree (Mask, width, x, y + width, z,
xsize, ysize, zsize);
nodeArray[3] = this->maskToOctree (Mask, width, x + width, y + width, z,
xsize, ysize, zsize);
nodeArray[4] = this->maskToOctree (Mask, width, x, y, z + width,
xsize, ysize, zsize);
nodeArray[5] = this->maskToOctree (Mask, width, x + width, y, z + width,
xsize, ysize, zsize);
nodeArray[6] = this->maskToOctree (Mask, width, x, y + width, z + width,
xsize, ysize, zsize);
nodeArray[7] = this->maskToOctree (Mask, width, x + width, y + width,
z + width, xsize, ysize, zsize);
if ( ( nodeArray[0] == nodeArray[1] )
&& ( nodeArray[0] == nodeArray[2] )
&& ( nodeArray[0] == nodeArray[3] )
&& ( nodeArray[0] == nodeArray[4] )
&& ( nodeArray[0] == nodeArray[5] )
&& ( nodeArray[0] == nodeArray[6] )
&& ( nodeArray[0] == nodeArray[7] ) )
{
return nodeArray[0];
}
else
{
OctreeNodeBranch *q = new OctreeNodeBranch(this);
OctreeNode * newbranch;
newbranch = q->GetLeaf(ZERO);
newbranch->SetBranch(nodeArray[ZERO]);
newbranch = q->GetLeaf(ONE);
newbranch->SetBranch(nodeArray[ONE]);
newbranch = q->GetLeaf(TWO);
newbranch->SetBranch(nodeArray[TWO]);
newbranch = q->GetLeaf(THREE);
newbranch->SetBranch(nodeArray[THREE]);
newbranch = q->GetLeaf(FOUR);
newbranch->SetBranch(nodeArray[FOUR]);
newbranch = q->GetLeaf(FIVE);
newbranch->SetBranch(nodeArray[FIVE]);
newbranch = q->GetLeaf(SIX);
newbranch->SetBranch(nodeArray[SIX]);
newbranch = q->GetLeaf(SEVEN);
newbranch->SetBranch(nodeArray[SEVEN]);
return ( q );
}
}
template< typename TPixel, unsigned int ColorTableSize, typename MappingFunctionType >
void
Octree< TPixel, ColorTableSize, MappingFunctionType >::BuildFromBuffer(const void *frombuffer,
const unsigned int xsize,
const unsigned int ysize,
const unsigned int zsize)
{
unsigned maxSize = xsize >= ysize ?
( xsize >= zsize ? xsize : zsize ) :
( ysize >= zsize ? ysize : zsize );
unsigned width = 1;
unsigned depth = 0;
while ( width < maxSize )
{
width *= 2;
depth++;
}
this->SetDepth(depth);
this->SetWidth(width);
m_TrueDims[0] = xsize;
m_TrueDims[1] = ysize;
m_TrueDims[2] = zsize;
const TPixel * bufcast = static_cast< const TPixel * >( frombuffer );
OctreeNodeBranch *branch =
this->maskToOctree(bufcast, width, 0, 0, 0,
xsize, ysize, zsize);
m_Tree.SetBranch(branch);
}
template< typename TPixel, unsigned int ColorTableSize, typename MappingFunctionType >
void
Octree< TPixel, ColorTableSize, MappingFunctionType >::BuildFromImage(ImageType *fromImage)
{
const typename Image< TPixel, 3 >::RegionType & region = fromImage->GetLargestPossibleRegion();
const SizeValueType xsize = region.GetSize(0);
const SizeValueType ysize = region.GetSize(1);
const SizeValueType zsize = region.GetSize(2);
this->BuildFromBuffer(static_cast< void * >( fromImage->GetBufferPointer() ),
xsize, ysize, zsize);
}
template< typename TPixel, unsigned int ColorTableSize, typename MappingFunctionType >
typename Octree< TPixel, ColorTableSize, MappingFunctionType >::ImageTypePointer
Octree< TPixel, ColorTableSize, MappingFunctionType >::GetImage()
{
typename ImageType::SizeType imageSize = { { 0, 0, 0 } };
SizeValueType sizes[3];
sizes[0] = m_TrueDims[0];
sizes[1] = m_TrueDims[1];
sizes[2] = m_TrueDims[2];
imageSize.SetSize(sizes);
const typename ImageType::IndexType imageIndex = { { 0, 0, 0 } };
typename ImageType::RegionType region;
region.SetSize(imageSize);
region.SetIndex(imageIndex);
typename ImageType::Pointer img = ImageType::New();
img->SetLargestPossibleRegion(region);
img->SetBufferedRegion(region);
img->SetRequestedRegion(region);
img->Allocate();
typename ImageType::IndexType setIndex;
for ( unsigned int i = 0; i < m_TrueDims[0]; i++ )
{
setIndex[0] = i;
for ( unsigned int j = 0; j < m_TrueDims[0]; j++ )
{
setIndex[1] = j;
for ( unsigned int k = 0; k < m_TrueDims[0]; k++ )
{
setIndex[2] = k;
img->SetPixel( setIndex, ( TPixel ) this->GetValue(i, j, k) );
}
}
}
return img;
}
template< typename TPixel, unsigned int ColorTableSize, typename MappingFunctionType >
OctreeNode *
Octree< TPixel, ColorTableSize, MappingFunctionType >::GetTree()
{
return &m_Tree;
}
template< typename TPixel, unsigned int ColorTableSize, typename MappingFunctionType >
void
Octree< TPixel, ColorTableSize, MappingFunctionType >::SetWidth(unsigned int width)
{
m_Width = width;
}
template< typename TPixel, unsigned int ColorTableSize, typename MappingFunctionType >
void
Octree< TPixel, ColorTableSize, MappingFunctionType >::SetDepth(unsigned int depth)
{
m_Depth = depth;
}
template< typename TPixel, unsigned int ColorTableSize, typename MappingFunctionType >
unsigned int
Octree< TPixel, ColorTableSize, MappingFunctionType >::GetWidth()
{
return m_Width;
}
template< typename TPixel, unsigned int ColorTableSize, typename MappingFunctionType >
unsigned int
Octree< TPixel, ColorTableSize, MappingFunctionType >::GetDepth()
{
return m_Depth;
}
template< typename TPixel, unsigned int ColorTableSize, typename MappingFunctionType >
const char *
Octree< TPixel, ColorTableSize, MappingFunctionType >::GetColorTable() const
{
return m_ColorTable;
}
template< typename TPixel, unsigned int ColorTableSize, typename MappingFunctionType >
int
Octree< TPixel, ColorTableSize, MappingFunctionType >::GetColorTableSize() const
{
return ColorTableSize;
}
}
#endif
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