Youp <you### [at] yahoocom> wrote:
> an union of triangles.

  You should convert it to a mesh (often replacing the 'union' keyword
for 'mesh' might work, but not always).
  A mesh takes less memory and is more efficient to copy.

-- 
#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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