Subject:
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Re: The geometry of minifigs
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Newsgroups:
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lugnet.cad.dev
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Date:
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Thu, 6 Apr 2000 11:04:46 GMT
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Viewed:
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2020 times
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In lugnet.cad.dev, Fredrik Glöckner writes:
> "Chris Dee" <chris_w_dee@hotmail.com> writes:
>
> > The angle of the side of the minifig torso as Ldrawn is 9.782
> > degrees (arctan 4.655/27) from the vertical. Hope this helps.
>
> Thanks. Can I safely assume that the author used 10 degrees when
> modeling the part?
>
> BTW: This is just what I find unuserfriendly about the parts library:
> You had to reverse engineer the part to find the angle. I'm sure the
> information I asked about in the original post was available when the
> parts were modeled in the first place, but now they're "hidden".
>
> Fredrik
No, the part is authored with an angle of 9.782. The (x,y) values of the lower
facet of the shoulder is (14.345,2) and that at the waist is (19,29) - hence
4.655/27. Or alternatively the top of the torso is (14,0), giving 5/29 - the
same ratio.
Generally, it is much easier to measure part dimensions acurately than measure
angles accurately (not that 14.345 was _measured_ directly - in fact the top of
the torso would have been measured as 14). I doubt very much that the original
author ever _knew_ the angle you are seeking, but measured the width and height
of the torso. Please correct me if I am wrong, Steve.
Chris
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Message has 2 Replies:
 | | Re: The geometry of minifigs
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| (...) Ok, thanks. I understand. It's not interesting for me (in this setting) to know the angles and offsets of the _true_ minifig. What is of interest is the values that were used to _model_ the minifig. This is because what I want to do is to pose (...) (25 years ago, 6-Apr-00, to lugnet.cad.dev)
| | | Re: The geometry of minifigs
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| (...) Da, you are correct. I'd go with the (14,0) shoulder position -- it has better (hidden) precision. 14.345 is derived, as you pointed out, and it is rounded. Does LGEO have the minifig torso? It'd be so nice to have truly rounded edges and (...) (25 years ago, 6-Apr-00, to lugnet.cad.dev)
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Message is in Reply To:
| | Re: The geometry of minifigs
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| (...) Thanks. Can I safely assume that the author used 10 degrees when modeling the part? BTW: This is just what I find unuserfriendly about the parts library: You had to reverse engineer the part to find the angle. I'm sure the information I asked (...) (25 years ago, 6-Apr-00, to lugnet.cad.dev)
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