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include
itkVectorImageNeighborhoodAccessorFunctor.h
Go to the documentation of this file.
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/*=========================================================================
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*
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* Copyright Insight Software Consortium
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0.txt
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*=========================================================================*/
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#ifndef __itkVectorImageNeighborhoodAccessorFunctor_h
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#define __itkVectorImageNeighborhoodAccessorFunctor_h
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#include "
itkVariableLengthVector.h
"
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#include "
itkImageBoundaryCondition.h
"
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#include "
itkImageBase.h
"
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namespace
itk
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{
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template
<
class
TImage >
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class
VectorImageNeighborhoodAccessorFunctor
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{
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public
:
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typedef
TImage
ImageType
;
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typedef
typename
ImageType::PixelType
PixelType
;
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typedef
typename
ImageType::InternalPixelType
InternalPixelType
;
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typedef
unsigned
int
VectorLengthType
;
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typedef
typename
ImageType::OffsetType
OffsetType
;
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typedef
Neighborhood
<
InternalPixelType
*,
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::itk::GetImageDimension< TImage >::ImageDimension
>
NeighborhoodType
;
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typedef
ImageBoundaryCondition< ImageType >
const
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*
ImageBoundaryConditionConstPointerType
;
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VectorImageNeighborhoodAccessorFunctor
(
VectorLengthType
length):
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m_VectorLength
(length),
m_OffsetMultiplier
(length - 1),
m_Begin
(
NULL
) {}
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VectorImageNeighborhoodAccessorFunctor
():
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m_VectorLength
(0),
m_OffsetMultiplier
(0),
m_Begin
(
NULL
) {}
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inline
void
SetBegin
(
const
InternalPixelType
*begin)
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{ this->
m_Begin
=
const_cast<
InternalPixelType
*
>
( begin ); }
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inline
PixelType
Get
(
const
InternalPixelType
*pixelPointer)
const
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{
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return
PixelType
(pixelPointer + ( pixelPointer -
m_Begin
) *
m_OffsetMultiplier
,
m_VectorLength
);
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}
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inline
void
Set
(
InternalPixelType
* & pixelPointer,
const
PixelType
& p)
const
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{
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InternalPixelType
*truePixelPointer =
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pixelPointer + ( pixelPointer -
m_Begin
) *
m_OffsetMultiplier
;
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for
(
VectorLengthType
i = 0; i <
m_VectorLength
; i++ )
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{
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truePixelPointer[i] = p[i];
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}
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}
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inline
PixelType
BoundaryCondition
(
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const
OffsetType
& point_index,
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const
OffsetType
& boundary_offset,
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const
NeighborhoodType
*data,
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const
ImageBoundaryConditionConstPointerType
boundaryCondition)
const
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{
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return
boundaryCondition->operator()(point_index, boundary_offset, data, *
this
);
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}
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void
SetVectorLength
(
VectorLengthType
length)
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{
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m_VectorLength
= length;
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m_OffsetMultiplier
= length - 1;
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}
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VectorLengthType
GetVectorLength
()
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{
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return
m_VectorLength
;
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}
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private
:
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VectorLengthType
m_VectorLength
;
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VectorLengthType
m_OffsetMultiplier
;
// m_OffsetMultiplier = m_VectorLength-1
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// (precomputed for speedup).
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InternalPixelType
*
m_Begin
;
// Begin of the buffer.
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};
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}
// end namespace itk
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#endif
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