Subject:
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Re: Object Orientation & DAT files & CLIPPING/WINDING
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Newsgroups:
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lugnet.cad.dev
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Date:
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Tue, 19 Oct 1999 14:12:35 GMT
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Viewed:
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401 times
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Rui Martins wrote in message ...
> to optimize existent .DAT files, use the following rules besides the
> previous one:
> - Enable clipping at the head of the file (if not a flat object)
> - If a given polygon is CW, then instead of putting a '0 WINDING CW'
> before it, change the definition of the polygon, from 1,2,3 to 3,2,1
Part authors should define the tris/quad the way he finds best, easy and logical
- maybe sometimes CW and sometimes CCW.
Also when fixing old parts, just insert a lot of WINDING keywords in stead
of editing the existing 3- and 4-lines. This preserves the nice tabulating
seen in some parts, which is nice if you have to debug the parts later.
The rendering program can easily (and costless) switch the vertex sequence.
/Lars
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Message has 1 Reply:
 | | Re: Object Orientation & DAT files & CLIPPING/WINDING
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| (...) If by default you always use the same winding, then you can know the orientation of the polygon on the fly. IF you mix both you will have a hard time, because you are mixing or reference. (...) That I agree! but my NOTE (suggestion) to pair (...) (25 years ago, 20-Oct-99, to lugnet.cad.dev)
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Message is in Reply To:
| | Object Orientation & DAT files & CLIPPING/WINDING
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| There has been a great discussion, about the optimizing with clipping topic, but it seems IMHO that people are forgetting simplicity is the best. Now if you read the subject of this message, maybe you know what I am talking/writting about. we must (...) (25 years ago, 18-Oct-99, to lugnet.cad.dev)
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