Herman Serras wrote:
> 
> In the binaries newsgroup often appear examples of the 5 regular
> polyhedra (the Platonic solids). In most cases they are constructed as
> the union or merge of triangles or polygons.
> For some application I wanted to apply CSG (difference) on some of those
> objects, but for a reason unknown to me this failed. I have the
> impression that the union or merge of triangles or polygons doesn't
> produce a solid.
> Is this exact and if so what can be done to define those objects as
> solids.
> Thanks,

Only objects with defined inside and outside can be used in CSG. Meshes,
triangles and polygons do not.

Have a look at 'shapes2.inc' for CSG-able versions of those shapes.  Note
that right now these shapes are unbounded so they render quite slow.

Christoph

-- 
POV-Ray tutorials, IsoWood include,                 
TransSkin and more: http://www.tu-bs.de/~y0013390/  
Last updated 13 Mar. 2002 _____./\/^>_*_<^\/\.______

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