ITK  5.2.0
Insight Toolkit
SphinxExamples/src/Core/Common/IterateLineThroughImageWithoutWriteAccess/Code.cxx
/*=========================================================================
*
* Copyright NumFOCUS
*
* 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 "itkImage.h"
using ImageType = itk::Image<unsigned char, 2>;
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();
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);
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;
}
}
itkImageFileReader.h
itk::GTest::TypedefsAndConstructors::Dimension2::SizeType
ImageBaseType::SizeType SizeType
Definition: itkGTestTypedefsAndConstructors.h:49
itkImage.h
itkImageRegionIterator.h
itk::Index::Fill
void Fill(IndexValueType value)
Definition: itkIndex.h:270
itk::Size::Fill
void Fill(SizeValueType value)
Definition: itkSize.h:211
itkLineConstIterator.h
itk::LineConstIterator
An iterator that walks a Bresenham line through an ND image with read-only access to pixels.
Definition: itkLineConstIterator.h:56
itk::ImageRegionIterator
A multi-dimensional iterator templated over image type that walks a region of pixels.
Definition: itkImageRegionIterator.h:78
itk::GTest::TypedefsAndConstructors::Dimension2::IndexType
ImageBaseType::IndexType IndexType
Definition: itkGTestTypedefsAndConstructors.h:50
itk::Index::GetIndex
const IndexValueType * GetIndex() const
Definition: itkIndex.h:228
itk::GTest::TypedefsAndConstructors::Dimension2::RegionType
ImageBaseType::RegionType RegionType
Definition: itkGTestTypedefsAndConstructors.h:54
itk::ImageRegionIterator::Set
void Set(const PixelType &value) const
Definition: itkImageRegionIterator.h:114
itk::Image
Templated n-dimensional image class.
Definition: itkImage.h:86
itk::ImageRegion::SetSize
void SetSize(const SizeType &size)
Definition: itkImageRegion.h:174