Subject:
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Re: Request for more stringent naming of (Complete|Shortcut) parts
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Newsgroups:
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lugnet.cad
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Date:
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Thu, 18 Sep 2008 00:34:04 GMT
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Viewed:
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5276 times
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In lugnet.cad, Kevin L. Clague wrote:
> Hi,
> I want to start by thanking the LDraw Standards Committee for all their
> diligent work in stratifying the documentation on LDraw Header format:
>
> http://www.ldraw.org/Article398.html
>
> As thorough as this document is, it is incomplete or ambiguous in the area of
> describing "compound parts". For example 4107488.dat, "Technic Tread (Complete
> Shortcut)" is actually composed of multiple of 681.dat, 680.dat, and 682.dat
> instances.
>
> Without guidance, LPub happily shows N 680.dats, M 681.dats, and O 682.dats,
> which make absolutely no sense to LDraw novices. Sure, the version of LSynth
> that our dear friend Willy uses, automatically solves this problem.......
> but.....
>
> Where possible I'd like LPub to automatically know that N 680's, M 681's and O
> 682's means one 4107488.dat in the part list image. Think of a more simple
> case: Minifigs...... as dear as they are, the are compound parts.
>
> I'd like LPub to see N instances of battle droid head, battle droid torso, two
> battledroid arms, and two battledroid legs and realize that they are a
> battledroid.
>
> How will it know this? Look at all examples of "compound parts" in all the
> official and unofficial parts directories and know what they are composed of.
>
> I've come up with simple rules for detecting "compound parts".....
>
> grep "Compound" * > foo
> grep "Shortcut" * >> foo
>
> but this is a heuristic, not a perfect algorithm. If we could come up with a
> more precise "complete shortcut" description, it could be much more computable.
>
> Kev
Whether the Header Specification is ambiguous or not, this is how I believe I
have implemented the "Shortcut" filetype in the !LDRAW_ORG line.
So for the 2008-01 official library onwards,
grep '!LDRAW_ORG Shortcut' * > foo
should be reliable.
Chris
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