/usr/include/InsightToolkit/Common/itkImageRegionExclusionConstIteratorWithIndex.txx is in libinsighttoolkit3-dev 3.20.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 | /*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkImageRegionExclusionConstIteratorWithIndex.txx
Language: C++
Date: $Date$
Version: $Revision$
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.
=========================================================================*/
#ifndef __itkImageRegionExclusionConstIteratorWithIndex_txx
#define __itkImageRegionExclusionConstIteratorWithIndex_txx
#include "itkImageRegionExclusionConstIteratorWithIndex.h"
namespace itk
{
//----------------------------------------------------------------------
// Set the region to exclude from the walk
//----------------------------------------------------------------------
template<class TImage>
void
ImageRegionExclusionConstIteratorWithIndex<TImage>
::SetExclusionRegion( const RegionType & region )
{
if( !this->m_Region.IsInside( region ) )
{
itkGenericExceptionMacro(<< "Attempt to set a exclusion region that is NOT contained inside the iterator region");
}
m_ExclusionRegion = region;
m_ExclusionBegin = m_ExclusionRegion.GetIndex();
SizeType exclusionSize = m_ExclusionRegion.GetSize();
for(unsigned int i=0; i<TImage::ImageDimension; ++i)
{
m_ExclusionEnd[i] = m_ExclusionBegin[i] + exclusionSize[i];
}
}
//----------------------------------------------------------------------
// Set the region to exclude from the walk to a region that is inset
// one pixel from the boundary of the region
//----------------------------------------------------------------------
template<class TImage>
void
ImageRegionExclusionConstIteratorWithIndex<TImage>
::SetExclusionRegionToInsetRegion()
{
RegionType excludeRegion;
excludeRegion = this->m_Region;
for (unsigned int i=0; i < TImage::ImageDimension; ++i)
{
if ( excludeRegion.GetSize()[i] >= 2 )
{
// region is large enough to inset, adjust size and index
excludeRegion.SetSize( i, excludeRegion.GetSize()[i] - 2);
excludeRegion.SetIndex( i, excludeRegion.GetIndex()[i] + 1);
}
else
{
// region is not large enough to inset, set exclusion size to
// zero and keep the index the same.
excludeRegion.SetSize( i, 0 );
}
}
this->SetExclusionRegion( excludeRegion );
}
//----------------------------------------------------------------------
// Advance along the line
//----------------------------------------------------------------------
template<class TImage>
ImageRegionExclusionConstIteratorWithIndex<TImage> &
ImageRegionExclusionConstIteratorWithIndex<TImage>
::operator++()
{
this->m_Remaining = false;
for( unsigned int in=0; in<TImage::ImageDimension; in++ )
{
this->m_PositionIndex[ in ]++;
// if entering the exclusion region... jump over it
if( m_ExclusionRegion.IsInside( this->m_PositionIndex ) )
{
this->m_PositionIndex[ in ] = m_ExclusionEnd[ in ];
this->m_Position += this->m_OffsetTable[in] * m_ExclusionRegion.GetSize()[ in ];
}
if( this->m_PositionIndex[ in ] < this->m_EndIndex[ in ] )
{
this->m_Position += this->m_OffsetTable[in];
this->m_Remaining = true;
break;
}
else
{
this->m_Position -= this->m_OffsetTable[ in ] * ( static_cast<long>(this->m_Region.GetSize()[in])-1 );
this->m_PositionIndex[ in ] = this->m_BeginIndex[ in ];
}
}
if( !this->m_Remaining ) // It will not advance here otherwise
{
this->m_Position = this->m_End;
}
return *this;
}
//----------------------------------------------------------------------
// Advance along the line in reverse direction
//----------------------------------------------------------------------
template<class TImage>
ImageRegionExclusionConstIteratorWithIndex<TImage> &
ImageRegionExclusionConstIteratorWithIndex<TImage>
::operator--()
{
this->m_Remaining = false;
for( unsigned int in=0; in<TImage::ImageDimension; in++ )
{
if( this->m_PositionIndex[ in ] > this->m_BeginIndex[ in ] )
{
this->m_PositionIndex[ in ]--;
this->m_Position -= this->m_OffsetTable[in];
// if entering the exclusion region... jump over it
if( m_ExclusionRegion.IsInside( this->m_PositionIndex ) )
{
this->m_PositionIndex[ in ] = m_ExclusionBegin[ in ]-1;
this->m_Position -= this->m_OffsetTable[in] * m_ExclusionRegion.GetSize()[ in ];
}
this->m_Remaining = true;
break;
}
else
{
this->m_PositionIndex[ in ]--;
this->m_Position += this->m_OffsetTable[ in ] * ( static_cast<long>(this->m_Region.GetSize()[in])-1 );
this->m_PositionIndex[ in ] = this->m_EndIndex[ in ] - 1;
}
}
if( !this->m_Remaining ) // It will not advance here otherwise
{
this->m_Position = this->m_End;
}
return *this;
}
} // end namespace itk
#endif
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