Subject:
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Re: Crazy, OK Heretical Idea ...
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Newsgroups:
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lugnet.cad
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Date:
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Thu, 1 May 2003 17:47:47 GMT
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Viewed:
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744 times
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"Kyle McDonald" <Kyle.McDonald@Sun.COM> skrev i meddelandet
news:3EB07E46.2070003@Sun.COM...
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> Polygons, could be flagged as belonging to the front, back,
> top, bottom, left, right, (or always drawn) of a brick, so
> that a render could easily know which polygons to leave out
> when another brick was placed on top or next to this one.
That's a lot of work for a small gain (if any) - it's better if the software
can deduce such things. Don't forget special handling of transparent parts,
AND the parts the transparent part is sitting on, transparent parts over
transparent parts, etc. etc.
BlockCAD uses extra info for the drawing order of the polygons in a part,
but that method means there are only a *limited* number of views where
everything is displayed completely correct.
I also experiment with keeping track of covered studs (to eliminate drawing
them), as the studs are a big part of total drawing time, but once again,
transparency breaks all the plans and the houskeeping eat up the gains...
--
Anders Isaksson, Sweden
BlockCAD: http://user.tninet.se/~hbh828t/proglego.htm
Gallery: http://user.tninet.se/~hbh828t/gallery/index.htm
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Message is in Reply To:
 | | Re: Crazy, OK Heretical Idea ...
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| (...) Yes! LOD would be very useful. There are several general purpose LOD methods out there, but again we may be able to improve performance or ease a renderer's job, by supplying even more information in a part file. Polygons, could be flagged as (...) (21 years ago, 1-May-03, to lugnet.cad)
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