Bill Pragnell wrote:
> 
> However, there appears to be a mismatch between the planar faces and the
> curved edges which produces "fault lines" (second picture). I've tried
> upping accuracy and max_gradient to no avail, and I've tried adding /
> subtracting the pigment functions in various combinations - no good. Can
> anyone shed any light on this bizarre artefact?

For a well working displacement you need your base function to be a 
correct distance function of the shape you want to displace - as Mike 
pointed out your function isn't.

You could for example use the IsoCSG library:

http://www.tu-bs.de/~y0013390/pov/ic/index.html

and create a merge of three triangles which would meet this condition (i 
think so - have not tested actually). Note using the builtin triangle 
function in MegaPOV would make this faster.

Christoph

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Last updated 03 May. 2005 _____./\/^>_*_<^\/\.______

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