Subject:
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Re: Formalizing a method for handling synthesizable parts
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Newsgroups:
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lugnet.cad.dev
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Date:
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Sat, 14 Sep 2002 13:32:22 GMT
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Viewed:
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352 times
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Larry,
Yes, I'm glad you mentioned string. It is similar to both bands and
tubes.
I'm not much of a mathematical theoretician, so I'll probably need some
help designing the algorithms, but I can code like a madman.
Kevin
"Larry Pieniazek" <lpieniazek@mercator.com> wrote in message
news:H2DpLF.EK3@lugnet.com...
> In lugnet.cad.dev, Kevin L. Clague writes:
>
> >
> > I'd like a mechanism that formalizes the definition of flexible parts, • and
> > allows for automatic synthesis. I envision the process working like • this.
> > We put a specification about the part we want synthesized into our design
> > using MLCAD (or LEdit or whatever). The specifications are very specific
> > about the LEGO part being used (e.g. light grey corrigated tube that • starts
> > here with this orientation and ends here with this orientation). When a
> > "synthesis capable" program comes along it can replace the synthesis
> > specification with the LDRAW parts needed. In the case of tubing, an
> > algorithm (probably bezier curve fitting or whatever) will be used to
> > specify all the segments' placement and orientation between the end • pieces.
>
> I think this would be very nifty!
>
>
> >
> > There are a number of tube like LEGO parts: electrical cables, pneumatic
> > tubing, fiber optic cables, narrow and corrigated tubes for example. I
> > think that all of these can be handled with the same synthesis algorithm,
> > but the parameters provided depend on the LEGO part being synthesized.
> > Examples of parameters include flexibility and the length of the LEGO • part.
> > Electrical cables are much more flexible than the corrigated tubing. • There
> > are at least five different length electrical cables. Pneumatic tubing • can
> > be cut to any length.
>
> One other type of flexible part is string. Taut string should conform to • the
> shape of whatever it is wound on, leave tangentially, and have a linear • path
> to the other end. Slack string should conform to whatever it is wound on,
> leave tangentially, and have a catenary curve to the other end. (with the
> catenary curve being in a plane that is vertical and which goes through • the
> endpoints)
>
> I did a string piece part which was a quick hack but which I used for the
> instructions of MTW-1004... I did all my placement by hand.
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Message is in Reply To:
 | | Re: Formalizing a method for handling synthesizable parts
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| (...) I think this would be very nifty! (...) One other type of flexible part is string. Taut string should conform to the shape of whatever it is wound on, leave tangentially, and have a linear path to the other end. Slack string should conform to (...) (22 years ago, 13-Sep-02, to lugnet.cad.dev)
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