I wrote programs which are able to convert MATLAB patch objects into
povray mesh objects, using either 'triangle' or 'smooth_triangle'
commands to build the mesh. I'm using this to picture proton clouds of a
simulation, so the objects are actually isosurfaces of a discreet volume
function.

In the smooth_triangle mesh object there are often holes. If I render
the same object with 'triangles' using the exactly same vertex data the
object looks ok and all the holes are closed. 

Has anybody had the same problems with 'smooth_triangle'? Is there a fix
to it?

Thanks,
Derek

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