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On Fri, 9 Nov 2001 12:06:53 -0500, "Anders K." <and### [at] f2s com> wrote:
> > #macro Transform_To_Array(Trans)
> > #local A=vtransform(x,Trans);
> > #local B=vtransform(y,Trans);
> > #local C=vtransform(z,Trans);
> > #local D=vtransform(0*x,Trans);
> > array[4]{A,B,C,D}
> > #end
>
> Shouldn't that be array[4]{A-D, B-D, C-D, D}?
right, I missed this bug probably becouse I tested it with D=<0,0,0>
thanks
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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