In article <39bbc012$1@news.povray.org>, "Greg M. Johnson" 
<"gregj;-)56590\""@aol.c;-)om> wrote:

> A) NOISE3D DISALLOWS APPROPRIATE NUMBER OF PARAMETERS
> 
> First of all, the following line gives a message.
>     #declare summy=summy+noise3d(minx,miny,minz);
> whereas this one does not:
>     #declare summy=summy+noise3d(minx);
> 
> Noise3d is a function defined over 3d space; it appears to be an
> oversight not to allow three parameters in this function.

It takes a vector. :-)
#declare summy = summy + noise3d(<minx,miny,minz>);
I chose this because all other POV functions that take points take them 
as vectors, isosurface functions are the exception because they don't 
have vectors.


> B) FUNC_ID NOT LIKED IN EXPRESSIONS.
> It appears to be an oversight that I can insert these into an isosurface
> but I cannot "use" these functions as is.

Not an oversight, just not a feature. The isosurface functions were 
originally not intended to be used outside of isosurfaces, they weren't 
made more general until later. I am planning to attempt to implement 
this though...
In the meantime, you can access them using eval_pattern().

-- 
Christopher James Huff
Personal: chr### [at] maccom, http://homepage.mac.com/chrishuff/
TAG: chr### [at] tagpovrayorg, http://tag.povray.org/

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