Mark Wagner wrote:
> 
> Warwick Barnes wrote in message <3c7c3ac7$1@news.povray.org>...
> >When runnning PovRay Beta 11 on Windows 2000 SP2, the following code
> >produces either
> >
> >1. A normal PovRay "explected float constant" error
> >2. Endless "Unable to allocate memory for message string" dialog boxes
> >3. A crash and instant exit from PovRay
> 
> >#declare Result = vnormalize(<0, 0, 0>);
> 
> There's the problem -- normalizing the zero vector is not defined.

Yes, but IIRC it was legal to normalize
a zero vector in v3.1g. You would just
get a zero vector as the result.

It seems that this is a change that will
break backward compatibility for some
scenes.

My opinion is that this change in behaviour
should be mentioned in the docs. And I also
think that a better error message should be
issued.


Tor Olav

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