It seems reasonably fast for what it does. Complex isosurfaces are often
not very fast.

You can speed it up by a factor of about 3 by fitting a tighter
contained_by shape, like

  contained_by { box{<-1e3,-111,-1e3><1e3,0,1e3>} }

If it's important for it to have a circular horizon you can intersect it
with a sphere or cylinder. If you're lucky you may well be able to get
away without having to use max_trace which would eat into the speed
improvement.

-- 
Mike Williams
Gentleman of Leisure

Post a reply to this message