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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Sun, 30 Mar 2008 02:48:38 GMT
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Viewed:
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4064 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?
Philo
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There are already circle chord and tangent primitives on the parts tracker. You
would just need to add a couple of triangles to get the ones you’re proposing.
See:
http://www.ldraw.org/cgi-bin/ptdetail.cgi?f=p/48/1-4chrd.dat
http://www.ldraw.org/cgi-bin/ptdetail.cgi?f=p/1-4tang.dat
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Message has 2 Replies:
 | | Re: New primitives?
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| (...) I wasn't aware of the tang primitive, and I had forgotten about the chrd primitive. Going from the chrd primitive to the proposed truncated disc requires the addition of one triangle, and the total number of triangles after adding that one is (...) (16 years ago, 30-Mar-08, to lugnet.cad, FTX)
| | | Re: New primitives?
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| (...) Andrew you are completely right. I was kind of obsessed by the missing triangle so I didn't thought well... I'm a little bit less convinced by the tang primitive that need several adaptation triangles (is it really better than to match (...) (16 years ago, 31-Mar-08, to lugnet.cad)
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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 (...) (16 years ago, 26-Mar-08, to lugnet.cad, FTX)
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