Subject:
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Re: Performance Improvement
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Newsgroups:
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lugnet.cad.dev
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Date:
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Wed, 5 Apr 2000 21:20:42 GMT
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Viewed:
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1936 times
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Rui,
I think that it's better to keep the 4-4disc and 2-4disc files the way
they are. The current configuration is more flexible, requires fewer
special-size primitives, and is less likely to be mis-applied. The new
proposal would only provide a small benefit to rendering speed.
Steve
In lugnet.cad.dev, Rui Martins wrote:
> On Wed, 5 Apr 2000, John VanZwieten wrote:
> > Rui Martins <Rui.Martins@link.pt> wrote in message
> > news:Pine.GSU.4.10.10004051352500.16816-100000@is-sv...
> > > Since the BFC discussion has everything to do with performance improvement,
> > > I would like to propose the following changes to the primitives:
> > >
> > > - 4-4disc.dat
> > > - 2-4disc.dat
> > >
> > > Remove the point which lies in position (0,0,0), because it's NOT required • and
> > > it adds significant overhead processing (every stud has an extra NOT
> > > required point)
> > >
> > > The primitives can still be constructed with triangles, just remove the • point
> > > (0,0,0) and remake the triangles in a fan like manner.
> >
> >
> > I don't see a problem with doing this for the 4-4disc, but it would be a
> > problem for the 2-4disc. The 2-4disc is often used in conjuction with a
> > 1-4disc
>
> In this case you should be using 3-4disc.dat (rotate it if necessary).
>
> > or 1-8disc.
>
> Maybe for this case there should be a "5-8disc.dat"
> But that would probably mean changes to already made parts.
>
> > The 2-4disc needs that center point to match up exactly
> > to the 1-4 and 1-8disc. Otherwise you get gaps when viewing from some
> > angles.
>
> This is what is generally called a T junction, which must be avoided at all
> cost. But I'm sad to say that currently a lot of parts have this problem.
>
> See ya
>
> Rui Martins
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Message has 1 Reply:
 | | Re: Performance Improvement
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| Steve: (...) I can't see how Rui's suggested change gives any problems at all and I don't mind a few percent speed increase. (...) And? Does the "diameter line" not cross the radius? If there is a significant risk of a misalignment, then we (...) (25 years ago, 7-Apr-00, to lugnet.cad.dev)
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Message is in Reply To:
| | Re: Performance Improvement
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| (...) In this case you should be using 3-4disc.dat (rotate it if necessary). (...) Maybe for this case there should be a "5-8disc.dat" But that would probably mean changes to already made parts. (...) This is what is generally called a T junction, (...) (25 years ago, 5-Apr-00, to lugnet.cad.dev)
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