Subject:
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Re: 4150p?? 4th try
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Newsgroups:
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lugnet.cad.dat.parts
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Date:
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Thu, 29 Jul 1999 00:33:24 GMT
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Viewed:
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1181 times
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Steve Bliss wrote:
>
> It looks good. I would recommend two things. This is general advice, not
> something that must be changed on this part (although it would improve the
> pattern further):
I appreciate that, thanks.
> 1. When connecting quads/triangles/lines to primitives, use the same number
> of decimal places as the primitives. Or more. All the disc, circle,
> cylinder, cone, and ring primitives currently have 4 decimal places.
_I_ do that diligently. It's LDraw that changes it. Unless you mean 0.5 should
be written as 0.50 to conform more with 0.25. Either that or I completly missed
your point. :)
> 2. Use common vertices for quads, triangles, and area-filling primitives.
> Whenever a renderer works on a scene, it takes the data from the DAT files,
> and transforms them to form the correct presentation. This means the
> numbers get modified, and small rounding errors can result when points are
> mapped to pixels. Usually, this is no big deal. But it can cause points
> that *should* be in a straight line to fall out of alignment. If the
> graphics primitives are tied together by common corners (wherever
> possible), the misalignment effect will be greatly reduced.
I try to do that whenever I can find the vertices. Vertices sometimes appear
out of the ring primitives when you zoom in really close and it gets
approximated with quads or something. I guess that's what you mean by "wherever
possible", right?
Or maybe I should stop reading this stuff after 9 hrs of boring, mind-numbing
work.
--
Patrick Sayre-Little | "hE's gOnE mAd, mAd I tEll yOU!!"
wsayreli@calpoly.edu | -me ...I think
http://www.calpoly.edu/~wsayreli |
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Message is in Reply To:
 | | Re: 4150p?? 4th try
|
| It looks good. I would recommend two things. This is general advice, not something that must be changed on this part (although it would improve the pattern further): 1. When connecting quads/triangles/lines to primitives, use the same number of (...) (25 years ago, 28-Jul-99, to lugnet.cad.dat.parts)
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