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On Fri, 26 Oct 2001 10:38:59 -0400, "Anders K." <and### [at] f2s com>
wrote:
> > #macro Go(Level)
> > #debug "1\n"
> > #switch (Level>0?Go(Level-1):0)
> > #case(0) 1 #break
> > #end
> > #end
>
> The problem here is that Go(Level - 1) is *always* evaluated, whether Level
> 0 or not, because POV-Ray doesn't use short-circuit evaluation.
yes, right, I missed this.
but how it should looks with #if ?
it seems not work too.
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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