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On Thu, 20 Dec 2001 15:53:05 +0100, "Simon Adameit" <gom### [at] gmx de> wrote:
> Is there another way to get the normals
As I said I'm affraid no, but ...
> or should I just make a thing that only
> works for spheres?
... you can write patch (start with current 3.1 sources and later move to 3.5).
Of course before patch you can test general rule with functions, spheres and
betas.
ABX
--
#declare _=function(a,b,x){((a^2)+(b^2))^.5-x}#default {pigment{color rgb 1}}
union{plane{y,-3}plane{-x,-3}finish{reflection 1 ambient 0}}isosurface{ //ABX
function{_(x-2,y,1)&_((x+y)*.7,z,.1)&_((x+y+2)*.7,z,.1)&_(x/2+y*.8+1.5,z,.1)}
contained_by{box{<0,-3,-.1>,<3,0,.1>}}translate z*15finish{ambient 1}}//POV35
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