/usr/include/ITK-4.5/itkSphereSignedDistanceFunction.hxx is in libinsighttoolkit4-dev 4.5.0-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef __itkSphereSignedDistanceFunction_hxx
#define __itkSphereSignedDistanceFunction_hxx
#include "itkSphereSignedDistanceFunction.h"
#include "vnl/vnl_math.h"
namespace itk
{
// Constructor with default arguments
template< typename TCoordRep, unsigned int VSpaceDimension >
SphereSignedDistanceFunction< TCoordRep, VSpaceDimension >
::SphereSignedDistanceFunction()
{
this->GetParameters().SetSize(SpaceDimension + 1);
this->GetParameters().Fill(0.0);
this->GetParameters()[0] = 1.0;
m_Translation.Fill(0.0);
m_Radius = 1.0;
}
// Set the parameters
template< typename TCoordRep, unsigned int VSpaceDimension >
void
SphereSignedDistanceFunction< TCoordRep, VSpaceDimension >
::SetParameters(const ParametersType & parameters)
{
if ( parameters != this->GetParameters() )
{
this->m_Parameters = parameters;
m_Radius = parameters[0];
for ( unsigned int i = 0; i < SpaceDimension; i++ )
{
m_Translation[i] = parameters[i + 1];
}
this->Modified();
}
}
// Print self
template< typename TCoordRep, unsigned int VSpaceDimension >
void
SphereSignedDistanceFunction< TCoordRep, VSpaceDimension >
::PrintSelf(std::ostream & os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "Translation: " << m_Translation << std::endl;
os << indent << "Radius: " << m_Radius << std::endl;
}
// Evaluate the signed distance
template< typename TCoordRep, unsigned int VSpaceDimension >
typename SphereSignedDistanceFunction< TCoordRep, VSpaceDimension >
::OutputType
SphereSignedDistanceFunction< TCoordRep, VSpaceDimension >
::Evaluate(const PointType & point) const
{
typedef typename NumericTraits< OutputType >::RealType RealType;
RealType output = 0.0;
for ( unsigned int j = 0; j < SpaceDimension; j++ )
{
output += vnl_math_sqr( ( point[j] - m_Translation[j] ) );
}
output = vcl_sqrt(output) - m_Radius;
return output;
}
} // end namespace itk
#endif
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