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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.
*
*=========================================================================*/
/**
*
* This program tests the RGBToVectorImageAdaptor.
*
* This class allows to take an image of pixel type RGBPixel,
* and use it as if it was an image of pixel type itk::Vector<>.
*
*/
#include "itkRGBToVectorImageAdaptor.h"
#include "itkImageRegionIteratorWithIndex.h"
//-------------------------
//
// Main code
//
//-------------------------
int itkRGBToVectorImageAdaptorTest(int, char* [] )
{
//-------------------------------------
// Typedefs for convenience
//-------------------------------------
typedef float ComponentType;
typedef itk::RGBPixel< ComponentType > RGBPixelType;
const unsigned int ImageDimension = 2;
typedef itk::Image< RGBPixelType, ImageDimension > ImageType;
typedef itk::RGBToVectorImageAdaptor< ImageType > ImageAdaptorType;
typedef itk::ImageRegionIteratorWithIndex< ImageType > IteratorType;
typedef itk::ImageRegionIteratorWithIndex< ImageAdaptorType > RedIteratorType;
ImageType::SizeType size;
size[0] = 2;
size[1] = 2;
ImageType::IndexType index;
index[0] = 0;
index[1] = 0;
ImageType::RegionType region;
region.SetIndex( index );
region.SetSize( size );
ImageType::Pointer image = ImageType::New();
image->SetLargestPossibleRegion( region );
image->SetBufferedRegion( region );
image->SetRequestedRegion( region );
image->Allocate();
IteratorType it1( image, image->GetRequestedRegion() );
// Value to initialize the pixels
ImageType::PixelType color;
color.SetRed( 0.7 );
color.SetGreen( 0.8 );
color.SetBlue( 0.5 );
// Initializing all the pixel in the image
it1.GoToBegin();
while( !it1.IsAtEnd() )
{
it1.Set(color);
++it1;
}
// Reading the values to verify the image content
std::cout << "--- Before --- " << std::endl;
it1.GoToBegin();
while( !it1.IsAtEnd() )
{
const ImageType::PixelType c( it1.Get() );
std::cout << c.GetRed() << " ";
std::cout << c.GetGreen() << " ";
std::cout << c.GetBlue() << std::endl;
++it1;
}
ImageAdaptorType::Pointer adaptor = ImageAdaptorType::New();
adaptor->SetImage( image );
RedIteratorType it2( adaptor, adaptor->GetRequestedRegion() );
// Set the values of the image, using the adaptor
typedef ImageAdaptorType::AccessorType::ExternalType PixelVectorType;
PixelVectorType vector;
vector[0] = 13;
vector[1] = 17;
vector[2] = 19;
it2.GoToBegin();
while( !it2.IsAtEnd() )
{
it2.Set( vector );
++it2;
}
std::cout << "--- After --- " << std::endl;
it1.GoToBegin();
while( !it1.IsAtEnd() )
{
const ImageType::PixelType c( it1.Get() );
std::cout << c.GetRed() << " ";
std::cout << c.GetGreen() << " ";
std::cout << c.GetBlue() << std::endl;
++it1;
}
return EXIT_SUCCESS;
}
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