notes.html
Ignoring new entities.
If an old version of the MGF parser encounters new entities it does not recognize, the default action is to ignore them, printing a warning message. This may be overridden to support custom entities, but such practice is discouraged because it weakens the standard.
IESNA Publication LM-63.
To obtain the latest version of this standard for luminaire data, write to:Illuminating Engineering Society of North America 345 East 47th St. New York, NY 10017.
MGF Identifier.
A name in MGF is any sequence of printing, non-white ASCII characters beginning with a letter.
Rendering Polygons with Seams.
For systems that are sensitive to seam position, it is probably safest for their MGF loader/translator to re-expresses seams in terms of holes again, which can be done easily so long as vertices are shared in the fashion shown.
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Apr 21, 2025 09:12 PM