Le 2021-11-23 à 15:00, Francois LE COAT a écrit :
> This program converts .TRI files generated by the Atari programs
> to POV-Ray or Vivid raytracer scene files. Bounding shapes are
> automatically generated for POV-Ray to greatly reduce the rendering time.
That part about adding bounding is no longer useful. It was useful to
manually bound things back then, but, the automatic bounding have
improved dramatically since 1993.
Now, not using those bounding often result in better performances.
Remember that adding bounded_by to an union suppress the normal bounding
of it's components. That mean that any ray that enters that bounding box
have to get tested against every individual primitives contained in that
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