"Warp" <war### [at] tagpovrayorg> wrote in message news:43737c09@news.povray.org...
> Zeger Knaepen <zeg### [at] povplacecom> wrote:
> > what's abs() got to do with sign(), except that you can make sign() with
sign(x)=x/abs(x) ?
>
>   Look at his "sign" implementation. It's abs().

hmm, you're right :)

cu!
--
#macro G(b,e)b+(e-b)*C/50#end#macro _(b,e,k,l)#local C=0;#while(C<50)
sphere{G(b,e)+3*z.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1;
#end#end _(y-x,y,x,x+y)_(y,-x-y,x+y,y)_(-x-y,-y,y,y+z)_(-y,y,y+z,x+y)
_(0x+y.5+y/2x)_(0x-y.5+y/2x)            // ZK http://www.povplace.com

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