clipka wrote:
> You'd need to (a) define the center of the sphere, (b) compute the 
> desired radius from the distance to the origin, (c) redefine your 
> Temp_fnc1 to take into account a radius, and (e) offset the parameters 
> to Temp_fnc1 by the center, as in:

Thanks. I'll try it out tonight or tomorrow.

> I guess this definition for Temp_fnc3 might run into problems though, 
> due to POV-Ray's general inability to use vector stuff in functions; you 
> may need to define temporary variables for the Center vector components, 
> as in:

Yeah, I have trouble with the algebraic functions. I use another 
program, called GeoGebra, to test out operations before I do them in 
POVray. Unfortunately, this program uses algebraic functions in the 
format of f(x) =  2 * x, which can sometimes be hard two convert to 
POVray's format of 0 = 2 * x - y.

-Mike

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