Subject:
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Re: No mention of scale in file format doc
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Newsgroups:
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lugnet.cad.dev.org.ldraw
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Date:
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Wed, 2 Mar 2005 02:37:02 GMT
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Viewed:
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1264 times
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In lugnet.cad.dev.org.ldraw, Steve Bliss wrote:
> In lugnet.cad.dev.org.ldraw, Stefan Gustavson wrote:
> > In lugnet.cad.dev.org.ldraw, Orion Pobursky wrote:
> > > The strictest definition is 1 LDU equals 1/20 the width
> > > of a 1x1 brick (whatever that measurement turns out to be).
> >
> > I beg to differ. The width of a 1x1 brick is not the same as
> > the spacing between two stud centres. Bricks have a small gap
> > between them, whereas studs are very accurately placed on any
> > brick with more than 1 stud. The LDU unit should be defined
> > by the stud spacings, not in terms of brick width or height.
>
> No, Orion is correct -- for LDraw. By definition, LDraw parts have no gap.
> 1-stud-wide bricks are 20 LDU - exactly.
>
> We *really* don't want to get into a game of trying model real-world dimensions
> in great detail. That it, unless someone can explain how we're going to model
> the deformation that occurs in a brick's side walls when the brick is pushed
> down onto another brick's studs.
I agree but Stefan gave a compelling argument for 1 LDU = 4 mm so I changed the
draft proposal.
-Orion
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Message has 1 Reply:
Message is in Reply To:
 | | Re: No mention of scale in file format doc
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| (...) No, Orion is correct -- for LDraw. By definition, LDraw parts have no gap. 1-stud-wide bricks are 20 LDU - exactly. We *really* don't want to get into a game of trying model real-world dimensions in great detail. That it, unless someone can (...) (20 years ago, 2-Mar-05, to lugnet.cad.dev.org.ldraw)
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