[Insight-developers] itkIndex signed -> unsigned

[Stephen R. Aylward]

Hi,

I thought we had decided it would be best to keep itkIndex signed so
that we could check for <0 for termination of certain methods and so
that we can check offsets via subtraction and <0.

Stephen

Luis Ibanez wrote:
> 
> Hi,
> 
> Recently itkIndex changed from using signed to unsigned values.
> That has the advantage to eliminate a lot of warnings when it is
> compared against image size (in most iterator loops),
> but has the disadvantage that negative positions can't be specified.
> we found that for the Danielsson distance map filter a signed index
> was quite useful.
> 
> Should we create another class to express vector distances
> between indices ?
> (the equivalent of what the vector class is for the point class).
> 
> Thanks
> 
> Luis
> 
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-- 
===============================================
Stephen R. Aylward
Assistant Professor of Radiology
Adjunct Assistant Professor of Computer Science
http://www.cs.unc.edu/~aylward
aylward@unc.edu
(919) 966-9695