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/*
//
// Copyright 1997-2009 Torsten Rohlfing
//
// Copyright 2004-2012, 2014 SRI International
//
// This file is part of the Computational Morphometry Toolkit.
//
// http://www.nitrc.org/projects/cmtk/
//
// The Computational Morphometry Toolkit is free software: you can
// redistribute it and/or modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation, either version 3 of
// the License, or (at your option) any later version.
//
// The Computational Morphometry Toolkit is distributed in the hope that it
// will be useful, but WITHOUT ANY WARRANTY; without even the implied
// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with the Computational Morphometry Toolkit. If not, see
// <http://www.gnu.org/licenses/>.
//
// $Revision: 5436 $
//
// $LastChangedDate: 2018-12-10 19:01:20 -0800 (Mon, 10 Dec 2018) $
//
// $LastChangedBy: torstenrohlfing $
//
*/
#include "cmtkXformList.h"
void
cmtk::XformList::Add
( const Xform::SmartConstPtr& xform, const bool inverse, const Types::Coordinate globalScale )
{
this->push_back( XformListEntry::SmartConstPtr( new XformListEntry( xform, inverse, globalScale ) ) );
}
void
cmtk::XformList::AddToFront
( const Xform::SmartConstPtr& xform, const bool inverse, const Types::Coordinate globalScale )
{
this->push_front( XformListEntry::SmartConstPtr( new XformListEntry( xform, inverse, globalScale ) ) );
}
bool
cmtk::XformList::ApplyInPlace( Xform::SpaceVectorType& v ) const
{
for ( const_iterator it = this->begin(); it != this->end(); ++it )
{
if ( (*it)->Inverse )
{
// is this an affine transformation that has an inverse?
if ( (*it)->InverseAffineXform )
{
// apply inverse
v = (*it)->InverseAffineXform->Apply( v );
}
else
{
// not affine: use approximate inverse
if ( ! (*it)->m_Xform->ApplyInverse( v, v, this->m_Epsilon ) )
return false;
}
}
else
{
// are we outside xform domain? then return failure.
if ( !(*it)->m_Xform->InDomain( v ) ) return false;
v = (*it)->m_Xform->Apply( v );
}
}
return true;
}
bool
cmtk::XformList::GetJacobian
( const Xform::SpaceVectorType& v, Types::DataItem& jacobian, const bool correctGlobalScale ) const
{
Xform::SpaceVectorType vv( v );
jacobian = static_cast<Types::DataItem>( 1.0 );
for ( const_iterator it = this->begin(); it != this->end(); ++it )
{
if ( (*it)->Inverse )
{
if ( correctGlobalScale )
jacobian *= static_cast<Types::DataItem>( (*it)->GlobalScale );
// is this an affine transformation that has an inverse?
if ( (*it)->InverseAffineXform )
{
// apply inverse
vv = (*it)->InverseAffineXform->Apply( vv );
}
else
{
// not affine: use approximate inverse
if ( ! (*it)->m_Xform->ApplyInverse( vv, vv, this->m_Epsilon ) )
return false;
}
// compute Jacobian at destination and invert
jacobian /= static_cast<Types::DataItem>( (*it)->m_Xform->GetJacobianDeterminant( vv ) );
}
else
{
// are we outside xform domain? then return failure.
if ( !(*it)->m_Xform->InDomain( v ) ) return false;
jacobian *= static_cast<Types::DataItem>( (*it)->m_Xform->GetJacobianDeterminant( vv ) );
if ( correctGlobalScale )
jacobian /= static_cast<Types::DataItem>( (*it)->GlobalScale );
vv = (*it)->m_Xform->Apply( vv );
}
}
return true;
}
bool
cmtk::XformList::AllAffine() const
{
for ( const_iterator it = this->begin(); it != this->end(); ++it )
{
if ( !(*it)->IsAffine() )
return false;
}
return true;
}
cmtk::XformList
cmtk::XformList::MakeAllAffine() const
{
cmtk::XformList allAffine;
for ( const_iterator it = this->begin(); it != this->end(); ++it )
{
allAffine.push_back( (*it)->CopyAsAffine() );
}
return allAffine;
}
std::string
cmtk::XformList::GetFixedImagePath() const
{
const XformListEntry& first = **(this->begin());
// if transformation is inverse, get original "moving" path instead.
if ( first.Inverse )
return first.m_Xform->GetMetaInfo( META_XFORM_MOVING_IMAGE_PATH, "" );
else
return first.m_Xform->GetMetaInfo( META_XFORM_FIXED_IMAGE_PATH, "" );
}
std::string
cmtk::XformList::GetMovingImagePath() const
{
const XformListEntry& last = **(this->rbegin());
// if transformation is inverse, get original "fixed" path instead.
if ( last.Inverse )
return last.m_Xform->GetMetaInfo( META_XFORM_FIXED_IMAGE_PATH, "" );
else
return last.m_Xform->GetMetaInfo( META_XFORM_MOVING_IMAGE_PATH, "" );
}
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