Subject:
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Hi-Res primitives : was - [Idea] New kind of tore for large diameter
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Newsgroups:
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lugnet.cad.dat.parts.primitives
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Date:
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Sat, 21 Jul 2001 04:58:07 GMT
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Viewed:
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4764 times
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On the subject of Hi-Res primitives, I have been developing several lately.
Should we have a "new" posting group so that they do not get mistakenly
downloaded as "16's".
So far the "48's" primitves I have made are,
1-4con1.dat thru 1-4con10.dat
1-4ring1.dat thru 1-4rin20.dat
1-4cyls.dat, 1-4cyls2.dat
1-8ndis.dat
2-8sphe.dat, 4-8sphe.dat (uses 1-8sphe.dat by Steve Bliss)
torii (toruses, torus', tore)
based upon our previous discussions about 16's torii, I am building a
spreadsheet to create 48's torii. I have the shape correct, just not the
conditional lines(yet).
t04i3333.dat (I picked this one as a starting point), more to come after the
spreadsheet works correctly.
Oh yeah, anyone wanting to download the 16's torii primitves I have already
made, I have them available as a "zip" file download available from my
"utilities" page. Look for "Torus primitives (torii.zip)"
http://www.geocities.com/pneaster/lcad_util.htm
LMKWYT,
Paul
> In lugnet.cad.dat.parts.primitives, Steve Bliss writes:
> > In lugnet.cad.dat.parts.primitives, Marc Klein wrote:
>
> > I have defined a tore that does not use the tore primitive because the standard primitive where to rough for a tore of
> > that diameter. The 48 version was to detailed for me.
> >
> > The file 2741c.dat could be a base for a new sort of tore primitive. It has 24 segments for the complete circle and its
> > better for large tores like the one used in this part.
> >
> > Any comments ?
>
> note: I've made toroidal bits before, using an approach similar to
> 2741c.dat, except I built 2741c.dat out of a 4-4cyli.dat and some
> 2-4cyls.dat.
>
> The reason we had the recent discussions about standardized torus p-files
> was so it would be easy to add (and utilize) more torus files in the
> future.
>
> 2741c.dat could be cast into the torus standard. You would need to split
> 2741c.dat into inside and outside files, and rescale it so the major circle
> axis = 1. I think the file names would be:
>
> T24I1363.DAT
> T24O1363.DAT
>
> More generally, the reason we stick with 16- and 48-segment circular
> objects is to make it easier for everyone to work with the primitives, to
> integrate them with angular surfaces.
>
> Also, looking at your file in L3Lab, I don't think the 48-segment
> primitives would be too detailed.
>
> Steve
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