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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 "itkCheckerBoardImageFilter.h"
int itkCheckerBoardImageFilterTest(int, char* [] )
{
// Define the dimension of the images
const unsigned int myDimension = 3;
// Declare the types of the images
typedef itk::Image<unsigned int, myDimension> myImageType;
// Declare the type of the index to access images
typedef itk::Index<myDimension> myIndexType;
// Declare the type of the size
typedef itk::Size<myDimension> mySizeType;
// Declare the type of the Region
typedef itk::ImageRegion<myDimension> myRegionType;
// Declare the type for the filter
typedef itk::CheckerBoardImageFilter<
myImageType > myFilterType;
// Declare the type of the arrays that define how many
// checkers to have along every dimension.
typedef myFilterType::PatternArrayType myPatternArrayType;
// Declare the pointers to images
typedef myImageType::Pointer myImageTypePointer;
typedef myFilterType::Pointer myFilterTypePointer;
// Create two images
myImageTypePointer inputImageA = myImageType::New();
myImageTypePointer inputImageB = myImageType::New();
// Define their size, and start index
mySizeType size;
size[0] = 40;
size[1] = 40;
size[2] = 40;
myIndexType start;
start[0] = 0;
start[1] = 0;
start[2] = 0;
myRegionType region;
region.SetIndex( start );
region.SetSize( size );
// Initialize Image A
inputImageA->SetLargestPossibleRegion( region );
inputImageA->SetBufferedRegion( region );
inputImageA->SetRequestedRegion( region );
inputImageA->Allocate();
// Initialize Image B
inputImageB->SetLargestPossibleRegion( region );
inputImageB->SetBufferedRegion( region );
inputImageB->SetRequestedRegion( region );
inputImageB->Allocate();
// Declare Iterator types apropriated for each image
typedef itk::ImageRegionIteratorWithIndex<myImageType> myIteratorType;
// Create one iterator for Image A (this is a light object)
myIteratorType it1( inputImageA, inputImageA->GetBufferedRegion() );
// Initialize the content of Image A
std::cout << "First operand " << std::endl;
while( !it1.IsAtEnd() )
{
it1.Set( 2 );
++it1;
}
// Create one iterator for Image B (this is a light object)
myIteratorType it2( inputImageB, inputImageB->GetBufferedRegion() );
// Initialize the content of Image B
std::cout << "Second operand " << std::endl;
while( !it2.IsAtEnd() )
{
it2.Set( 3 );
++it2;
}
// Create the Filter
myFilterTypePointer filter = myFilterType::New();
// Connect the input images
filter->SetInput1( inputImageA );
filter->SetInput2( inputImageB );
myPatternArrayType pattern;
pattern[0] = 4; // number of checkers along X
pattern[1] = 8; // number of checkers along Y
pattern[2] = 10; // number of checkers along Z
filter->SetCheckerPattern( pattern );
// Get the Smart Pointer to the Filter Output
myImageTypePointer outputImage = filter->GetOutput();
// Execute the filter
filter->Update();
// Exercise the GetCheckerPattern() method
myPatternArrayType pattern2 = filter->GetCheckerPattern();
for(unsigned int k=0; k<3; k++)
{
if( pattern2[k] != pattern[k] )
{
std::cerr << "error in SetCheckerPattern()/GetCheckerPattern() " << std::endl;
std::cerr << "Expected = " << pattern << std::endl;
std::cerr << "Received = " << pattern2 << std::endl;
return EXIT_FAILURE;
}
}
// All objects should be automatically destroyed at this point
return EXIT_SUCCESS;
}
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