There is a bug in the vector code for dimensions other
than 2.  This is a known, and long time, problem.  I've
played around with the source code a bit in an attempt
to find the error -- it's clear it is getting confused
about the dimensionality of the vector (in the case
of 2-d), but I didn't find the precise error.

A manifestation of this is the following won't work :

#declare UV = <1, 2>;
#declare V  = uv.v;

For dimension larger than 3, there are other problems.

Dan

P.S. I believe I've seen the correction posted somewhere,
but I am not sure where.



Sally Rothenberg wrote:
> 
> Jeffrey,
> 
> I'm not sure this is the same problem but I noticed I can't seem to write to
> a single
> element in my UV lattice (2 dim array) of vectors, although I can read:
> 
>     #local nx = clat[U][V].x;
> 
> My workaround was:
> 
>      #local clat[U][V] = <cc+1,0,0>;
> 
> If you are initializing in a nested loop, you might try:
> 
>    #local clat[U][V] = <xvalue,yvalue,zvalue>;
> 
> If this has something to do with my using version 3.1 rather than 3.1a, I'd
> sure like to
> know about it !
> 
> Hope this helps,
> Sally
> 
> Jeffrey H. Zimmer wrote in message <3629c15f.0@news.povray.org>...
> >Downloaded and began playing with 3.1 recently.  The new arrays look like a
> >great addition (not to mention the new editor).  However I'm having
> problems
> >initializing a two-dimensional array (128 x 128) with vectors using a
> nested
> >while loop (one for x, the other for y).  Has anyone else dealt with this?
> >
> >Thanks,
> >Jeff
> >
> >

-- 
http://www.flash.net/~djconnel/

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