[Insight-users] Getting a reference to a pixel from an iterator

[David Doria]

I often find myself doing:

itk::ImageRegionIterator<ImageType> imageIterator =
itk::ImageRegionIterator<ImageType>(image, region);
  while(!imageIterator.IsAtEnd())
    {
    PixelType pixel = image->GetPixel(imageIterator.GetIndex());
    // changing 'pixel' changes the actual pixel in the image since GetPixel
returns a reference
    }

Is there a reason that the iterator can't return a reference like this? That
is,

    PixelType pixel = imageIterator->Get();
    // changing 'pixel' does NOT change the actual pixel in the image since
Get does NOT return a reference

Even this doesn't work:

     PixelType* pixel = &(imageIterator->Get());

because it complains "warning: taking the address of a temporary" (and it is
correct, it doesn't not work correctly).

Any thoughts on this?

David
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