"Yadgar" <yaz### [at] gmxde> wrote in message
news:web.464ec550a6148d97cd5f50d20@news.povray.org...
> #declare s=<4, 20, 5>;
> #declare a=<4, -20, 5>;
>
> #declare pos=trace(Terrain, s, a)+<0, 0.0017, 0>;

I think you mean:
#declare pos=trace(Terrain,s,-y)+y*.0017;


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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