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/*========================================================================= |
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Program: Insight Segmentation & Registration Toolkit |
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Module: $RCSfile: itkSphereSignedDistanceFunction.txx.html,v $ |
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Language: C++ |
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Date: $Date: 2006/01/17 19:15:48 $ |
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Version: $Revision: 1.4 $ |
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Copyright (c) Insight Software Consortium. All rights reserved. |
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See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details. |
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This software is distributed WITHOUT ANY WARRANTY; without even |
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR |
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PURPOSE. See the above copyright notices for more information. |
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=========================================================================*/ |
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#ifndef _itkSphereSignedDistanceFunction_txx |
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#define _itkSphereSignedDistanceFunction_txx |
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#include "itkSphereSignedDistanceFunction.h" |
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namespace itk |
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{ |
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// Constructor with default arguments |
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template<typename TCoordRep, unsigned int VSpaceDimension> |
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SphereSignedDistanceFunction<TCoordRep, VSpaceDimension> |
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::SphereSignedDistanceFunction() |
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{ |
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this->GetParameters().SetSize( SpaceDimension + 1 ); |
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this->GetParameters().Fill( 0.0 ); |
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this->GetParameters()[0] = 1.0; |
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m_Translation.Fill( 0.0 ); |
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m_Radius = 1.0; |
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} |
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// Set the parameters |
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template<typename TCoordRep, unsigned int VSpaceDimension> |
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void |
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SphereSignedDistanceFunction<TCoordRep, VSpaceDimension> |
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::SetParameters( const ParametersType & parameters ) |
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{ |
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if ( parameters != this->GetParameters() ) |
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{ |
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this->m_Parameters = parameters; |
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m_Radius = parameters[0]; |
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for( unsigned int i=0; i<SpaceDimension; i++ ) |
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{ |
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m_Translation[i] = parameters[i+1]; |
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} |
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this->Modified(); |
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} |
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} |
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// Print self |
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template<typename TCoordRep, unsigned int VSpaceDimension> |
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void |
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SphereSignedDistanceFunction<TCoordRep, VSpaceDimension> |
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::PrintSelf(std::ostream &os, Indent indent) const |
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{ |
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Superclass::PrintSelf(os,indent); |
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os << indent << "Translation: " << m_Translation << std::endl; |
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os << indent << "Radius: " << m_Radius << std::endl; |
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} |
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// Evaluate the signed distance |
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template<typename TCoordRep, unsigned int VSpaceDimension> |
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typename SphereSignedDistanceFunction<TCoordRep, VSpaceDimension> |
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::OutputType |
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SphereSignedDistanceFunction<TCoordRep, VSpaceDimension> |
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::Evaluate( const PointType& point ) const |
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{ |
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typedef typename NumericTraits<OutputType>::RealType RealType; |
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RealType output = 0.0; |
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for( unsigned int j = 0; j < SpaceDimension; j++ ) |
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{ |
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output += vnl_math_sqr( ( point[j] - m_Translation[j] ) ); |
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} |
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output = vcl_sqrt(output) - m_Radius; |
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return output; |
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} |
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} // namespace |
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#endif |
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