Subject:
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Another stupid part-authoring question (Primo?!?)
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Newsgroups:
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lugnet.cad.dev
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Date:
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Wed, 27 Feb 2002 18:22:50 GMT
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Viewed:
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323 times
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Okay, I'm probably the only one here who really cares about Duplo parts
(with the possible exception of Paul Easter). But I figure that some folks
at least will appreciate having these added to the parts library.
As part of modeling Duplo, I'm also interested in working on Primo parts
(which aren't branded as Primo anymore- but that's another story). Before I
get started, I need to figure out how I should do the studs.
For all existing studs (as far as I know), we have three versions:
- The basic stud (16-sided)
- The fast-draw version (8-sided)
- The shared studline.dat version (0-sided: just a line)
The Primo stud, for those who don't know, is a hemisphere that measures 4
studs across on top of a cylinder 2 plates high. In LDU, it is 80 units
wide and 56 high.
My question is whether I should bother designing the stud like other studs
or whether I should just make it a subpart that doesn't get stud rendering
optimizations.
Here are my options, as I see them:
Traditional approach:
- Create a standard stud using hi-res primitives (half sphere
plus a cylinder). Keep in mind the scale here- you'd need to go
above 16 segments if you want even vaguely decent-looking studs.
Should this use 48-segment primitives? How about 32 segments?
- Create a fast-draw stud using either standard (16-segment)
primitives or using 8-segment equivalents.
- Scale all of these parts down in the y axis such that the
studline.dat optimization still works.
Simpler approach:
Just do one version, with hi-res primitives. Forget the
optimizations... how many studs will there be on your Primo creations
anyway? Besides... scale the studline.dat up to 56 units high and
it looks *really* wrong.
In either case, I'm planning on doing a POV-Ray stud as well. The parts are
actually easier to do in POV-Ray than they are in LDraw anyway. Would we
need special support in L3P for this to work with either of the approaches
mentioned above?
--
Tony Hafner
www.hafhead.com
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Message has 2 Replies:
 | | Re: Another stupid part-authoring question (Primo?!?)
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| Tony, FWIW, my vote is, anytime a partially spherical or parabolic shape is above a certain size, I *highly* recommend using the "high-res" (i.e., "48"-part) primitives. And don't worry about being "one of the few" who express interest in a subset (...) (22 years ago, 28-Feb-02, to lugnet.cad.dev)
| | | Re: Another stupid part-authoring question (Primo?!?)
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| (...) Hmm. I don't have any Primo parts handy, so I've got to throw out a basic question. Isn't the inside of the Primo stud actually hollow? If we made a Primo stud that was subject to studline'ing, that would leave a huge hole in the Primo parts, (...) (22 years ago, 28-Feb-02, to lugnet.cad.dev)
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