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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkCompositeValleyFunctionTest.cxx,v $
Language: C++
Date: $Date: 2005-02-08 04:20:01 $
Version: $Revision: 1.5 $
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.
=========================================================================*/
#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif
#include <iostream>
#include "vnl/vnl_math.h"
#include "itkCompositeValleyFunction.h"
#include "itkArray.h"
#include "itkNumericTraits.h"
int itkCompositeValleyFunctionTest(int , char* [] )
{
itk::Array< double > means(2) ;
itk::Array< double > sigmas(2) ;
means[0] = 0.0 ;
means[1] = 100.0 ;
sigmas[0] = 20.0 ;
sigmas[1] = 20.0 ;
itk::CompositeValleyFunction function(means, sigmas) ;
if ( function.GetUpperBound() != 280.0 )
{
std::cout << "Test fails: GetUpperBound()" << std::endl ;
return EXIT_FAILURE ;
}
if ( function.GetLowerBound() != -180.0 )
{
std::cout << "Test fails: GetLowerBound()" << std::endl ;
return EXIT_FAILURE ;
}
std::cout.setf(std::ios::scientific) ;
std::cout.precision(12) ;
double interval1 = function.GetInterval() ;
double interval2 =
( function.GetUpperBound() - function.GetLowerBound() )
/ (1000000.0 - 1.0) ;
if ( vnl_math_abs( interval1 - interval2 ) >
itk::NumericTraits< double >::epsilon() )
{
std::cout << "Test fails: GetInterval()" << std::endl ;
std::cout << "Interval from the GetInterval() = " << interval1
<< std::endl ;
std::cout << "Interval value using the calculation = " << interval2
<< std::endl ;
return EXIT_FAILURE ;
}
long numberOfSamples = function.GetNumberOfSamples() ;
double measure = function.GetLowerBound() + interval1* numberOfSamples * 0.5 ;
double value1 = function( measure ) ;
double value2 = function.Evaluate( measure ) ;
if ( vnl_math_abs(value1 - value2) >
itk::NumericTraits< double >::epsilon())
{
std::cout << "diff = " << vnl_math_abs(value1 - value2) << std::endl ;
std::cout << "Test fails: operator()" << std::endl ;
return EXIT_FAILURE ;
}
std::cout << "Test succeed" << std::endl ;
return EXIT_SUCCESS ;
}
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