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Subject:	Re: Open cylinder primitives, any demand?
Newsgroups:	lugnet.cad.dat.parts.primitives
Date:	Mon, 2 Nov 2009 22:34:32 GMT
Viewed:	13915 times

In lugnet.cad.dat.parts.primitives, Tore Eriksson wrote: > In lugnet.cad.dat.parts.primitives, Travis Cobbs wrote: > > In lugnet.cad.dat.parts.primitives, Mark Kennedy wrote: > > > Is there any demand for this type of cylinder primitive that's open at both > > > ends? > > > > Not being a part author, I can't comment on the utility, but to me the naming is > > confusing. The base cylinder primitives are already open at both ends; they > > just don't have edges there. So to me, cyle would make more since in the > > filename, and "Cylinder with edges" in the description. > > > > --Travis > > Naming is not an important issue to me. Either name would be fine for me. The > one important thing for me is that it doesn't mess up with renderers and > utilities that make primitive substitutions. But I don't see that there should > be any risk for that. > > But I sure have missed this combination, and also a "stud 1x1 w/o logo", ie a > cylinder with one closed end, preferably the one at the y=1 end. I think 4/4 and > 1/4 versions would be the ones of most use. 4/4 for many purposes, also holes, > and 1/4 for rounded corners. > > > So I suggest these four new primitives: > 1/4 cylinder open with egdes > 1/4 cylinder open with egdes and one disc > 4/4 cylinder open with egdes > 4/4 cylinder open with egdes and one disc > > When it comes to naming and descriptions, I have no opinion. > > /Tore A cylinder with one closed end (4-4cylc.dat) was issued in the latest parts update (2009-02). See http://www.ldraw.org/library/primref/#curv3d . If there is a need for a 1-4cylc.dat, feel free to submit it to the Parts Tracker. However, I'm struggling to see the utility of a cylinder with both ends open. Can someone provide an example of where it might be useful. Chris Dee

Message has 3 Replies:

		Re: Open cylinder primitives, any demand?
(...) 4-4 and 2-4 cylc are released, 1-4 and 3-4cylc are already on PT. (...) I think the usefulness is quite low indeed. Philo (15 years ago, 3-Nov-09, to lugnet.cad.dat.parts.primitives)

		Re: Open cylinder primitives, any demand?
(...) Guess I replied way too soon. I may revise my earlier reply after giving it some more thought. A 1/4 cylinder with both ends closed would of course be better for rounded cornerns. A cylinder with both ends open could be useful when making (...) (15 years ago, 3-Nov-09, to lugnet.cad.dat.parts.primitives)

		Re: Open cylinder primitives, any demand?
(...) This type of primitive would mostly be used in places where a cylinder appears between two other objects. One example would be the subpart at: (URL) currently uses 4-4cylc.dat where a 4-4cylo.dat (cylinder with edges open at both ends) would (...) (15 years ago, 3-Nov-09, to lugnet.cad.dat.parts.primitives)

Message is in Reply To:

		Re: Open cylinder primitives, any demand?
(...) Naming is not an important issue to me. Either name would be fine for me. The one important thing for me is that it doesn't mess up with renderers and utilities that make primitive substitutions. But I don't see that there should be any risk (...) (15 years ago, 2-Nov-09, to lugnet.cad.dat.parts.primitives)

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