Subject:
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Re: New primitives?
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Newsgroups:
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lugnet.cad
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Date:
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Wed, 26 Mar 2008 16:52:07 GMT
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Viewed:
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4805 times
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In lugnet.cad, Philippe Hurbain wrote:
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In addition to the unit capped cylinder I suggested here
http://news.lugnet.com/cad/dat/parts/?n=6310 I’d also like to see some
truncated disc and ndis primitives, like the red ones shown below (the
truncated disc can also be seen as a half chrd primitive).
This would help building many rounded shapes more and more common in LEGO
parts. They would mostly be useful in 48 version to have enough smoothness.
What do you think? how should we name these primitives?
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First of all, I like the idea of a unit capped cylinder. The stud could then be
changed to a reference to the new primitive. We could use x-ycylc as the
filenames and call the primitive Cylinder Capped. This would be consistent with
the existing 1-4cyls (Cylinder Sloped) primitive.
As for the truncated disc and ndis primitives names, I would recommend x-ytdisc
and x-ytndisc. The tndisc primitives would then not be 8.3 compatible, so
that’s only OK if the parts library is now allowed to go by the 1.0 version of
the LDraw file format spec. Additionally, a 1-16tdisc primitive would also not
be 8.3 compatible. Having said that, what’s the point of having long filenames
explicitly permitted in the spec if we’re not going to allow them in the
library?
(Since I don’t author parts, I won’t comment on their usefulness. I’ll take
your word for it that they will be useful.)
--Travis
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Message has 2 Replies:
 | | Re: New primitives?
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| (...) OK, so I'll make this primitive, but which way should it face? Should it face up, like the stud primitive, or should it face down, like the box primitives? --Travis (17 years ago, 26-Mar-08, to lugnet.cad, FTX)
| | | Re: New primitives?
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| (...) One concern about capped cylinders is that they would lead more multiples of cylinders - single-capped cylinders, double-capped cylinders, 1/4 capped cylinders, 2/4 capped cylinders, Hi-res 3/8 double-capped cylinders, etc. etc. And every (...) (17 years ago, 26-Mar-08, to lugnet.cad, FTX)
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Message is in Reply To:
| | New primitives?
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| In addition to the unit capped cylinder I suggested here (URL) I'd also like to see some truncated disc and ndis primitives, like the red ones shown below (the truncated disc can also be seen as a half chrd primitive). (URL) This would help building (...) (17 years ago, 26-Mar-08, to lugnet.cad, FTX)
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