/usr/include/ITK-4.12/itkSymmetricEllipsoidInteriorExteriorSpatialFunction.hxx is in libinsighttoolkit4-dev 4.12.2-dfsg1-1ubuntu1.
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*
* Copyright Insight Software Consortium
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* Licensed under the Apache License, Version 2.0 (the "License");
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* http://www.apache.org/licenses/LICENSE-2.0.txt
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#ifndef itkSymmetricEllipsoidInteriorExteriorSpatialFunction_hxx
#define itkSymmetricEllipsoidInteriorExteriorSpatialFunction_hxx
#include "itkSymmetricEllipsoidInteriorExteriorSpatialFunction.h"
#include <cmath>
namespace itk
{
template< unsigned int VDimension, typename TInput >
SymmetricEllipsoidInteriorExteriorSpatialFunction< VDimension, TInput >
::SymmetricEllipsoidInteriorExteriorSpatialFunction() :
m_UniqueAxis(10), // Length of unique axis
m_SymmetricAxes(5), // Length of symmetric axes
m_VectorRatio(0.0) // Vector ratio
{
m_Center.Fill(0.0); // Origin of ellipsoid
m_Orientation.Fill(1.0); // Orientation of unique axis
}
template< unsigned int VDimension, typename TInput >
SymmetricEllipsoidInteriorExteriorSpatialFunction< VDimension, TInput >
::~SymmetricEllipsoidInteriorExteriorSpatialFunction()
{}
template< unsigned int VDimension, typename TInput >
typename SymmetricEllipsoidInteriorExteriorSpatialFunction< VDimension, TInput >::OutputType
SymmetricEllipsoidInteriorExteriorSpatialFunction< VDimension, TInput >
::Evaluate(const InputType & position) const
{
double uniqueTerm; // Term in ellipsoid equation for unique axis
double symmetricTerm; // Term in ellipsoid equation for symmetric axes
Vector< double, VDimension > pointVector;
Vector< double, VDimension > symmetricVector;
// Project the position onto the major axis, normalize by axis length,
// and determine whether position is inside ellipsoid.
for ( unsigned int i = 0; i < VDimension; i++ )
{
pointVector[i] = position[i] - m_Center[i];
}
uniqueTerm = std::pow( static_cast< double >( ( ( pointVector * m_Orientation ) / ( .5 * m_UniqueAxis ) ) ),
static_cast< double >( 2 ) );
symmetricVector = pointVector - ( m_Orientation * ( pointVector * m_Orientation ) );
symmetricTerm = std::pow(
static_cast< double >( ( ( symmetricVector.GetNorm() ) / ( .5 * m_SymmetricAxes ) ) ), static_cast< double >( 2 ) );
if ( ( uniqueTerm + symmetricTerm ) >= 0 && ( uniqueTerm + symmetricTerm ) <= 1 )
{
return 1; // Inside the ellipsoid.
}
//Default return value assumes outside the ellipsoid
return 0; // Outside the ellipsoid.
}
template< unsigned int VDimension, typename TInput >
void SymmetricEllipsoidInteriorExteriorSpatialFunction< VDimension, TInput >
::PrintSelf(std::ostream & os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "Origin of Ellipsoid: ";
os << m_Center << std::endl;
os << indent << "Unique Axis Orientation: ";
os << m_Orientation << std::endl;
os << indent << "Unique Axis Length: ";
os << m_UniqueAxis << std::endl;
os << indent << "Symmetric Axis Length: ";
os << m_SymmetricAxes << std::endl;
}
template< unsigned int VDimension, typename TInput >
void SymmetricEllipsoidInteriorExteriorSpatialFunction< VDimension, TInput >
::SetOrientation(VectorType orientation, double uniqueAxis, double symmetricAxes)
{
m_Orientation = orientation; // Orientation of unique axis of ellipsoid
m_SymmetricAxes = symmetricAxes; // Length of symmetric axes
m_UniqueAxis = uniqueAxis; // Length of unique axis
}
} // end namespace itk
#endif
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