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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.
*
*=========================================================================*/
#include <iostream>
#include "itkVectorImageToImageAdaptor.h"
#include "itkImageRegionIteratorWithIndex.h"
#include "itkTestingMacros.h"
#include "itkMath.h"
// This test tests the basic functionality of
// VectorImageToImageAdaptor, espeically the Set/GetPixel() methods.
int itkVectorImageToImageAdaptorTest( int, char* [] )
{
//image type typedefs
const unsigned int Dimension = 3;
const unsigned int VectorLength = 4;
const unsigned int componentToExtract = 3;
typedef float PixelType;
typedef itk::VectorImage< PixelType, Dimension > VectorImageType;
typedef itk::VectorImageToImageAdaptor< PixelType, Dimension > VectorImageToImageAdaptorType;
//initialize a vector image
VectorImageType::Pointer vectorImage = VectorImageType::New();
VectorImageType::IndexType start;
itk::VariableLengthVector< PixelType > f( VectorLength );
VectorImageType::SizeType size;
for( unsigned int i = 0; i < VectorLength; i++ )
{
f[i] = PixelType(i);
}
start.Fill(0);
size.Fill(50);
VectorImageType::RegionType region;
region.SetSize( size );
region.SetIndex( start );
vectorImage->SetVectorLength( VectorLength );
vectorImage->SetRegions( region );
vectorImage->Allocate();
vectorImage->FillBuffer( f );
//run the adaptor
VectorImageToImageAdaptorType::Pointer vectorImageToImageAdaptor = VectorImageToImageAdaptorType::New();
vectorImageToImageAdaptor->SetExtractComponentIndex( componentToExtract );
vectorImageToImageAdaptor->SetImage(vectorImage);
vectorImageToImageAdaptor->Update();
//test adaptor with const iterator
itk::ImageRegionConstIteratorWithIndex< VectorImageToImageAdaptorType> adaptIt(vectorImageToImageAdaptor, region);
adaptIt.GoToBegin();
while (!adaptIt.IsAtEnd())
{
PixelType pixelV = adaptIt.Get();
if (itk::Math::NotAlmostEquals( pixelV, PixelType(componentToExtract) ))
{
std::cout << "Wrong Pixel Value: adaptIt(" << adaptIt.GetIndex() << ") = " << adaptIt.Get()
<< std::endl;
return EXIT_FAILURE;
}
++adaptIt;
}
//test Get/SetPixel() methods
VectorImageToImageAdaptorType::IndexType index;
index.Fill(10);
TEST_EXPECT_EQUAL(PixelType(componentToExtract), vectorImageToImageAdaptor->GetPixel(index));
PixelType v = 4.4f;
vectorImageToImageAdaptor->SetPixel(index, v);
TEST_EXPECT_EQUAL(v, vectorImageToImageAdaptor->GetPixel(index));
return EXIT_SUCCESS;
}
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