On Tue, 11 Jan 2000 15:23:26 -0500, Greg M. Johnson wrote:
>Actually, I think that this is what povray does:
>
>if I say,               noise3d (x^a                            ,  y,z)
>it processes        noise3d (sign(x)*pow(abs(x),a),  y,z)
>
>I will try to prove this tonight.
>[I thought someone had asked what SHOULD it do--was that note deleted?]  If
>povray processes the formula above as I described, there's no problem--it was
>just a mystery to be solved . . .

Well, there's that little problem of x^2+y^2+z^2-1 (threshold 0) not being a 
sphere anymore, but other than that...


-- 
These are my opinions.  I do NOT speak for the POV-Team.
The superpatch: http://www2.fwi.com/~parkerr/superpatch/
My other stuff: http://www2.fwi.com/~parkerr/traces.html

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