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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkLineIteratorTest.cxx,v $
Language: C++
Date: $Date: 2007-08-20 13:00:21 $
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
// Testcode for the itk::LineIterator.
#include <iostream>
#include "itkImage.h"
#include "itkImageFileWriter.h"
#include "itkLineIterator.h"
#include "itkTimeProbe.h"
int itkLineIteratorTest(int argc, char*argv[])
{
const int Dimension = 2;
typedef unsigned char PixelType;
typedef itk::Image<PixelType, Dimension> ImageType;
typedef ImageType::RegionType::IndexType IndexType;
typedef IndexType::IndexValueType IndexValueType;
if (argc < 2)
{
std::cerr << "Usage: " << std::endl;
std::cerr << argv[0] << " outputfilename" << std::endl;
return EXIT_FAILURE;
}
// Set up a test image
ImageType::RegionType::IndexType index;
index.Fill(0);
ImageType::RegionType::SizeType size;
size.Fill(200);
ImageType::RegionType region;
region.SetIndex(index);
region.SetSize(size);
ImageType::Pointer output = ImageType::New();
output->SetRegions(region);
output->Allocate();
output->FillBuffer(0);
// First test: empty line
IndexType startIndex;
IndexType endIndex;
startIndex[0] = 11;
startIndex[1] = 13;
endIndex[0] = 11;
endIndex[1] = 13;
typedef itk::LineIterator<ImageType> LineIteratorType;
LineIteratorType across(output, startIndex, endIndex);
// First test: currentIndex initialization
if (startIndex != across.GetIndex())
{
std::cerr << "Error! Index should be startIndex.\n";
return EXIT_FAILURE;
}
// Second test: IsAtEnd() is one pixel past the endIndex
if (across.IsAtEnd())
{
std::cerr << "Error! Iterator should not be at end.\n";
return EXIT_FAILURE;
}
++across;
if (!across.IsAtEnd())
{
std::cerr << "Error! Iterator should be at end.\n";
return EXIT_FAILURE;
}
// Third test: draw some lines.
itk::TimeProbe timer;
timer.Start();
startIndex.Fill(10);
endIndex.Fill(189);
LineIteratorType it(output, startIndex, endIndex);
while (!it.IsAtEnd())
{
it.Set(255);
++it;
}
startIndex.Fill(50);
endIndex[0] = 150;
endIndex[1] = startIndex[1];
it = LineIteratorType(output, startIndex, endIndex);
while (!it.IsAtEnd())
{
it.Set(150);
++it;
}
startIndex.Fill(120);
endIndex[0] = 50;
endIndex[1] = 100;
it = LineIteratorType(output, startIndex, endIndex);
while (!it.IsAtEnd())
{
it.Set(150);
++it;
}
timer.Stop();
std::cerr << "Line drawing took " << timer.GetMeanTime() << " seconds.\n";
typedef itk::ImageFileWriter<ImageType> WriterType;
WriterType::Pointer writer = WriterType::New();
writer->SetInput(output);
writer->SetFileName(argv[1]);
writer->Update();
return EXIT_SUCCESS;
}
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