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In lugnet.trains, Ludo Soete writes:
> In lugnet.trains, Cary Clark writes:
> > In lugnet.trains, Ludo Soete writes: • ...
> The 'zero' point is normally at the center of the part ...
It's the 'normal' part that trips me up! Consider these parts:
http://guide.lugnet.com/partsref/search.cgi?q=3063
http://guide.lugnet.com/partsref/search.cgi?q=2357
From a geometry point of view, these are pretty similar. But (according to
MLCad) the center of the macaroni is the circle center; the center of the
2x2 'L' is the middle stud. (Note that they are not oriented the same way
either.) Your center point matches the 2x2 'L' philosophy (the center
bisects the part) but the orientation of curve isn't like either part; you
rotate the curve so that the middle tie is axis-aligned.
> > Now I have to go and make my data match yours.
>
> Whats the purpose for this data?
I'm working on a program that works with LDraw data, but requires additional
information, like how part geometry interconnects. I'll talk anyone's ear
off about it offline, but I don't want to announce it in a public forum
until it is closer to completion.
Cary
FUT cad.dat.parts
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Message is in Reply To:
 | | Re: 9V Curved Track
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| (...) The 'zero' point is normaly at the center of the part with the y=0 point at the base of the studs. A regular plate has then a Y value of y=0 (stud position) to Y=8 (bottom of the plate) (...) Whats the purpose for this data? (...) Thanks Cary (...) (22 years ago, 17-Apr-03, to lugnet.trains)
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