Mike Williams <mik### [at] nospamplease> wrote:
: if you can convert from

:                 F(x,y,z) = 0
: to
:                 z = G(x,y)

... then it's just a heightfield which is pretty easy to create. You
can even use the function image feature for creating an actual height_field
object (which should render even faster than a mesh).

-- 
#macro M(A,N,D,L)plane{-z,-9pigment{mandel L*9translate N color_map{[0rgb x]
[1rgb 9]}scale<D,D*3D>*1e3}rotate y*A*8}#end M(-3<1.206434.28623>70,7)M(
-1<.7438.1795>1,20)M(1<.77595.13699>30,20)M(3<.75923.07145>80,99)// - Warp -

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