On 21 Nov 2001 04:18:03 -0500, Warp <war### [at] tagpovrayorg> wrote:
> : I never played with heigh fields however looking at documentation (6.5.1.5)
> : only images are allowed.
>
>  Heightfields can be created from functions. This is mentioned somewhere; if
> it's not mentioned in the heightfield section, then I think a note should be
> added there.

I found it within function chapter. I agree it should be mentioned at
heigh_field chapter too. However it creates new instance of images by
reevaluating it. That's way this construction needs dimensions. So we back to
storage system.

height_field {function 200,200 {pigment{image_map{"test"}}}}

>  I said it's possible. I didn't say it would be as efficient.

right

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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