Subject:
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Re: [Parts Tracker] More BFC Primitives
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Newsgroups:
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lugnet.cad.dev.org.ldraw
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Date:
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Fri, 5 Apr 2002 18:54:48 GMT
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Viewed:
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442 times
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In lugnet.cad.dev.org.ldraw, Tony Hafner writes:
> In lugnet.cad.dev.org.ldraw, Steve Bliss writes:
> > > Um... Not to stir the pot or anything but I was reading the BFC proposal on
> > > your website and noticed that the BFC specification says that all primitves
> > > must be certified CCW. Did this get revised via discussion and not updated?
>
> For starters, I recently tried to track down the BFC specification but
> couldn't find it (on ldraw.org or on Steve's site). Could someone post the
> link please?
<http://www.geocities.com/partsref/bfc/>
> > At this point, I'm as inclined to delete the clause from the spec as to
> > keep it (and modify the primitives specified as CW).
>
> If it doesn't matter from a performance perspective, I vote you kill the
> clause.
I think the only way it would matter for performance is if we decided that
the *entire* library would be CW or CCW, and so rendering programs wouldn't
have to check the winding direction at all. And that would be a very small
difference in speed.
Steve
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Message has 2 Replies:
 | | Re: [Parts Tracker] More BFC Primitives
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| (...) Given the fact that they have to check whether or not a given file has been mirrored, I can't see that the directionality would make a large difference. If everything used CCW, then only mirrored ones would need to be reordered (assuming the (...) (23 years ago, 6-Apr-02, to lugnet.cad.dev.org.ldraw)
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Message is in Reply To:
| | Re: [Parts Tracker] More BFC Primitives
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| (...) For starters, I recently tried to track down the BFC specification but couldn't find it (on ldraw.org or on Steve's site). Could someone post the link please? (...) If it doesn't matter from a performance perspective, I vote you kill the (...) (23 years ago, 5-Apr-02, to lugnet.cad.dev.org.ldraw)
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