In article <3e087565@news.povray.org> , "Eric Dowty" 
<dow### [at] shapesoftwarecom> wrote:

>  Other 3D packages such as OpenGL and
> QuickDraw3D are able to draw polygons without requiring
> planarity within e-10.

Since when is POV-Ray a scanline renderer?  As both APIs are implement such
that they turn the polygons into triangles for you they hardly suffer from
degenerate input data.  It is much different for ray-tracing and the
algorithm used to calculate the polygon intersection.  If your modification
works 99% of the time that does not mean it is a good idea, just a
workaround for the degenerate input data.  And fixing your data is really
easy!


    Thorsten


____________________________________________________
Thorsten Froehlich
e-mail: mac### [at] povrayorg

I am a member of the POV-Ray Team.
Visit POV-Ray on the web: http://mac.povray.org

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