"Peter Popov" <pet### [at] usanet> wrote in message
news:3c796fc0.8500773@news.povray.org...
> Can anyone suggest an equation that gives the distance to a unit
> circle lying in the x-z plane? It should look like an wood pattern
> whose axis is not +z but a circle. Any ideas?

When will this thread DIE???? :-)

Geez, this reminds me back in the day when I had a vase/bad texture fetish
and everyone threatened to send my early works to the newspapers...man,
those were the days :-D

--
#macro S(M)cylinder{E(M)<A,C,5>,<B,D,5>,.1,15}#end#macro E(P)#if(div(P,16)
)#declare B=-1;#declare D=-2;#end#if(div(P,32))#declare A=1;#declare C=0;#
end#if(div(P,64))#declare B=-1;#declare D=0;#end#if(div(P,128))#declare A=
1;#declare C=2;#end#end blob{S(192)S(96)S(48)pigment{rgb 8*z}} /** Ian **/

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