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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkInterpolateImageFilterTest.cxx
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.
=========================================================================*/
#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif
#include <iostream>
#include "itkImage.h"
#include "itkImageRegionIteratorWithIndex.h"
#include "itkInterpolateImageFilter.h"
int itkInterpolateImageFilterTest(int, char* [] )
{
enum { ImageDimension = 2 };
typedef unsigned long InputPixelType;
typedef unsigned long OutputPixelType;
typedef itk::Image<InputPixelType,ImageDimension> InputImageType;
typedef itk::Image<OutputPixelType,ImageDimension> OutputImageType;
// fill images
typedef InputImageType::SizeType SizeType;
SizeType size;
size.Fill( 5 );
InputImageType::Pointer image1 = InputImageType::New();
image1->SetRegions( size );
image1->Allocate();
image1->FillBuffer( 100 );
InputImageType::Pointer image2 = InputImageType::New();
image2->SetRegions( size );
image2->Allocate();
itk::ImageRegionIteratorWithIndex<InputImageType> inIter2( image2,
image2->GetBufferedRegion() );
unsigned long temp = 0;
while( !inIter2.IsAtEnd() )
{
inIter2.Set( temp );
temp += 2;
++inIter2;
}
typedef itk::InterpolateImageFilter<InputImageType,OutputImageType> FilterType;
FilterType::Pointer filter = FilterType::New();
filter->SetInput1( image1 );
filter->SetInput2( image2 );
filter->Print( std::cout );
try
{
filter->Update();
}
catch( itk::ExceptionObject & err )
{
std::cout << "Caught unexpected exception: " << err << std::endl;
std::cout << "Test failed. " << std::endl;
return EXIT_FAILURE;
}
// walk the output and check the results
itk::ImageRegionIteratorWithIndex<InputImageType> inIter1( image1,
image1->GetBufferedRegion() );
inIter2.GoToBegin();
itk::ImageRegionIteratorWithIndex<OutputImageType> outIter( filter->GetOutput(),
filter->GetOutput()->GetBufferedRegion() );
temp = 50;
while( !inIter1.IsAtEnd() )
{
std::cout << " " << inIter1.Get()
<< " " << inIter2.Get()
<< " " << outIter.Get()
<< std::endl;
if ( outIter.Get() != temp )
{
std::cout << "Expected output " << temp
<< " got " << outIter.Get()
<< " instead. " << std::endl;
std::cout << "Test failed. " << std::endl;
return EXIT_FAILURE;
}
++temp;
++inIter1;
++inIter2;
++outIter;
}
// excerise other methods
filter->GetInput1();
filter->GetInput2();
filter->GetInterpolator();
filter->SetDistance( 0.2 );
filter->GetDistance();
// set the interpolator to be null
filter->SetInterpolator( NULL );
bool pass = false;
try
{
filter->Update();
}
catch( itk::ExceptionObject & err )
{
std::cout << "Caught expected exception: " << err << std::endl;
pass = true;
}
if ( !pass )
{
std::cout << "Test failed." << std::endl;
return EXIT_FAILURE;
}
std::cout << "Test passed." << std::endl;
return EXIT_SUCCESS;
}
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