ITK/Examples/Iterators/LineConstIterator

LineConstIterator.cxx

<source lang="cpp">

1. include "itkImage.h"
2. include "itkImageFileReader.h"
3. include "itkImageRegionIterator.h"
4. include "itkLineConstIterator.h"

typedef itk::Image<unsigned char, 2> ImageType;

static void CreateImage(ImageType::Pointer image);

int main(int, char*[]) {

 ImageType::Pointer image = ImageType::New();
 CreateImage(image);

 ImageType::RegionType region = image->GetLargestPossibleRegion();
 ImageType::IndexType corner1 = region.GetIndex();
 ImageType::IndexType corner2;
 corner2[0] = corner1[0] + region.GetSize()[0] - 1;
 corner2[1] = corner1[1] + region.GetSize()[1] - 1;

 itk::LineConstIterator<ImageType> it(image, corner1, corner2);
 it.GoToBegin();
 while (!it.IsAtEnd())
   {
   std::cout << (int)it.Get() << std::endl;
   ++it;
   }

 return EXIT_SUCCESS;

}

void CreateImage(ImageType::Pointer image) {

 ImageType::SizeType regionSize;
 regionSize.Fill(3);

 ImageType::IndexType regionIndex;
 regionIndex.Fill(0);

 ImageType::RegionType region;
 region.SetSize(regionSize);
 region.SetIndex(regionIndex);

 image->SetRegions(region);
 image->Allocate();

 itk::ImageRegionIterator<ImageType> imageIterator(image,image->GetLargestPossibleRegion());

 while(!imageIterator.IsAtEnd())
   {
   imageIterator.Set(255);
   ++imageIterator;
   }

} </source>

CMakeLists.txt

<source lang="cmake"> cmake_minimum_required(VERSION 2.6)

PROJECT(LineIterator)

FIND_PACKAGE(ITK REQUIRED) INCLUDE(${ITK_USE_FILE})

ADD_EXECUTABLE(LineIterator LineIterator.cxx) TARGET_LINK_LIBRARIES(LineIterator ITKNumerics ITKBasicFilters ITKCommon ITKIO)

</source>