/usr/include/InsightToolkit/Common/itkFourierSeriesPath.txx is in libinsighttoolkit3-dev 3.20.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 | /*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkFourierSeriesPath.txx
Language: C++
Date: $Date$
Version: $Revision$
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 __itkFourierSeriesPath_txx
#define __itkFourierSeriesPath_txx
#include "itkFourierSeriesPath.h"
#include <math.h>
namespace itk
{
template<unsigned int VDimension>
typename FourierSeriesPath<VDimension>::OutputType
FourierSeriesPath<VDimension>
::Evaluate( const InputType & input ) const
{
InputType theta;
OutputType output;
int numHarmonics;
numHarmonics = m_CosCoefficients->Size();
output.Fill(0);
const double PI = 4.0 * vcl_atan( 1.0 );
if( numHarmonics > 0 ) { output += m_CosCoefficients->ElementAt(0); }
for(int n=1; n<numHarmonics; n++)
{
// input defined over [0,1] maps to theta defined over [0,2pi * n]
theta = PI * 2.0 * n * input;
output += ( m_CosCoefficients->ElementAt(n) * vcl_cos(theta) +
m_SinCoefficients->ElementAt(n) * vcl_sin(theta) ) * 2.0;
}
return output;
}
template<unsigned int VDimension>
typename FourierSeriesPath<VDimension>::VectorType
FourierSeriesPath<VDimension>
::EvaluateDerivative(const InputType & input) const
{
InputType theta;
VectorType output;
int numHarmonics;
numHarmonics = m_CosCoefficients->Size();
output.Fill(0);
const double PI = 4.0 * vcl_atan( 1.0 );
for(int n=1; n<numHarmonics; n++)
{
// input defined over [0,1] maps to theta defined over [0,2pi * n]
theta = PI * 2.0 * n * input;
output += ( m_SinCoefficients->ElementAt(n) * vcl_cos(theta) -
m_CosCoefficients->ElementAt(n) * vcl_sin(theta) ) * (2.0 * n);
}
return output;
}
template<unsigned int VDimension>
void
FourierSeriesPath<VDimension>
::AddHarmonic( const VectorType & CosCoefficients,
const VectorType & SinCoefficients )
{
unsigned int numHarmonics = m_CosCoefficients->Size();
m_CosCoefficients->InsertElement(numHarmonics, CosCoefficients);
m_SinCoefficients->InsertElement(numHarmonics, SinCoefficients);
this->Modified();
}
/**
* Constructor
*/
template <unsigned int VDimension>
FourierSeriesPath<VDimension>
::FourierSeriesPath()
{
this->SetDefaultInputStepSize( 1.0/50.0 );
m_CosCoefficients = CoefficientsType::New();
m_SinCoefficients = CoefficientsType::New();
}
/**
* Standard "PrintSelf" method
*/
template <unsigned int VDimension>
void
FourierSeriesPath<VDimension>
::PrintSelf( std::ostream& os, Indent indent) const
{
Superclass::PrintSelf( os, indent );
os << indent << "Cos Coefficients: " << m_CosCoefficients << std::endl;
os << indent << "Sin Coefficients: " << m_SinCoefficients << std::endl;
}
} // end namespaceitk
#endif
|