SphinxExamples/src/Core/Common/CreateAnImageOfVectors/Code.cxx

/*=========================================================================
 *
 *  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 "itkVector.h"
#include "itkImage.h"

int main( int , char* [] )
{
  using PixelType = itk::Vector< float, 3 >;
  using ImageType = itk::Image< PixelType, 3 >;

  // Then the image object can be created
  ImageType::Pointer image = ImageType::New();

  // The image region should be initialized
  const ImageType::IndexType start = {{0,0,0}}; //First index at {X,Y,Z}
  const ImageType::SizeType  size = {{200,200,200}}; //Size of {X,Y,Z}

  ImageType::RegionType region;
  region.SetSize( size );
  region.SetIndex( start );

  // Pixel data is allocated
  image->SetRegions( region );
  image->Allocate();

  // The image buffer is initialized to a particular value
  ImageType::PixelType  initialValue;

  // A vector can initialize all its components to the
  // same value by using the Fill() method.
  initialValue.Fill( 0.0 );

  // Now the image buffer can be initialized with this
  // vector value.
  image->FillBuffer( initialValue );

  const ImageType::IndexType pixelIndex = {{27,29,37}}; //Position {X,Y,Z}


  ImageType::PixelType   pixelValue;
  pixelValue[0] =  1.345;   // x component
  pixelValue[1] =  6.841;   // y component
  pixelValue[2] =  3.295;   // x component

  image->SetPixel(   pixelIndex,   pixelValue  );

  ImageType::PixelType value = image->GetPixel( pixelIndex );

  std::cout << value << std::endl;



  return EXIT_SUCCESS;
}