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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkScalableAffineTransform.txx,v $
Language: C++
Date: $Date: 2005-05-03 14:19:23 $
Version: $Revision: 1.3 $
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 _itkScalableAffineTransform_txx
#define _itkScalableAffineTransform_txx
#include "itkNumericTraits.h"
#include "itkScalableAffineTransform.h"
#include "itkAffineTransform.h"
#include "vnl/algo/vnl_matrix_inverse.h"
namespace itk
{
/** Constructor with default arguments */
template<class TScalarType, unsigned int NDimensions>
ScalableAffineTransform<TScalarType, NDimensions>
::ScalableAffineTransform()
: Superclass(Self::OutputSpaceDimension, Self::ParametersDimension)
{
for (unsigned int i=0; i<NDimensions; i++)
{
m_Scale[i] = 1;
m_MatrixScale[i] = 1;
}
}
/** Constructor with default arguments */
template<class TScalarType, unsigned int NDimensions>
ScalableAffineTransform<TScalarType, NDimensions>
::ScalableAffineTransform( unsigned int outputSpaceDimension,
unsigned int parametersDimension )
: Superclass(outputSpaceDimension, parametersDimension)
{
for (unsigned int i=0; i<NDimensions; i++)
{
m_Scale[i] = 1;
m_MatrixScale[i] = 1;
}
}
/** Constructor with default arguments */
template<class TScalarType, unsigned int NDimensions>
ScalableAffineTransform<TScalarType, NDimensions>
::ScalableAffineTransform( const MatrixType & matrix,
const OutputVectorType & offset )
: Superclass(matrix, offset)
{
for (unsigned int i=0; i<NDimensions; i++)
{
m_Scale[i] = 1;
m_MatrixScale[i] = 1;
}
}
/** Destructor */
template<class TScalarType, unsigned int NDimensions>
ScalableAffineTransform<TScalarType, NDimensions>
::~ScalableAffineTransform()
{
return;
}
/** Print self */
template<class TScalarType, unsigned int NDimensions>
void
ScalableAffineTransform<TScalarType, NDimensions>
::PrintSelf(std::ostream &os, Indent indent) const
{
Superclass::PrintSelf(os,indent);
unsigned int i;
os << indent << "Scale : ";
for (i = 0; i < NDimensions; i++)
{
os << m_Scale[i] << " ";
}
os << std::endl;
os << indent << "MatrixScale : ";
for (i = 0; i < NDimensions; i++)
{
os << m_MatrixScale[i] << " ";
}
os << std::endl;
}
// Set the parameters in order to fit an Identity transform
template<class TScalarType, unsigned int NDimensions>
void
ScalableAffineTransform<TScalarType, NDimensions>
::SetIdentity( void )
{
for (unsigned int i=0; i<NDimensions; i++)
{
m_Scale[i] = 1;
m_MatrixScale[i] = 1;
}
this->Superclass::SetIdentity();
}
/** Set the scale of the transformation */
template<class TScalarType, unsigned int NDimensions>
void
ScalableAffineTransform<TScalarType, NDimensions>
::SetScale(const InputVectorType & scale )
{
unsigned int i;
for (i=0; i<NDimensions; i++)
{
m_Scale[i] = scale[i];
}
this->ComputeMatrix();
this->Modified();
}
template<class TScalarType, unsigned int NDimensions>
void
ScalableAffineTransform<TScalarType, NDimensions>
::SetScale(const double scale[NDimensions] )
{
unsigned int i;
for (i=0; i<NDimensions; i++)
{
m_Scale[i] = scale[i];
}
this->ComputeMatrix();
this->Modified();
}
/** Set the scale of the transformation */
template<class TScalarType, unsigned int NDimensions>
void
ScalableAffineTransform<TScalarType, NDimensions>
::ComputeMatrix()
{
unsigned int i;
for (i=0; i<NDimensions; i++)
{
if(m_Scale[i] != m_MatrixScale[i])
{
break;
}
}
if ( i < NDimensions )
{
MatrixType mat;
for (i=0; i<NDimensions; i++)
{
if(m_MatrixScale[i] != 0 && m_Scale[i] != 0)
{
mat.GetVnlMatrix().put(i, i, m_Scale[i]/m_MatrixScale[i]
* this->GetMatrix()[i][i]);
m_MatrixScale[i] = m_Scale[i];
}
else
{
m_Scale[i] = 1;
m_MatrixScale[i] = 1;
mat.GetVnlMatrix().put(i, i, this->GetMatrix()[i][i]);
}
}
Superclass::SetVarMatrix(mat);
}
}
} // namespace
#endif
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