 | | The geometry of minifigs
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At what angle and point do the arm/shoulder of the minifig connect to the torso? What is the angle and offset of the bend of the minifig arm and what is the angle of the hand with respect to the pin which connects it to the arm? I don't see how (...) (25 years ago, 5-Apr-00, to lugnet.cad.dev)
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| | Re: The geometry of minifigs
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(...) 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. Chris (25 years ago, 5-Apr-00, to lugnet.cad.dev)
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| | 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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| | Re: The geometry of minifigs
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(...) 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 (...) (25 years ago, 6-Apr-00, to lugnet.cad.dev)
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| | 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)
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| | 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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| | Re: The geometry of minifigs
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(...) No, it doesn't. But it has the head, arms, hands, legs and hips. Fredrik (25 years ago, 6-Apr-00, to lugnet.cad.dev)
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| | Digging up an old thread (was: The geometry of minifigs)
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(...) Considering the accuracy to which the torso and arm parts are modeled... is it possible at all to do realistic poses (like an ABS minifig) without nasty gaps and collisions? I've had trouble doing this before, but only just realized how bad it (...) (23 years ago, 24-Apr-02, to lugnet.cad.dev)
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| | Re: Digging up an old thread (was: The geometry of minifigs)
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(...) I have had thougt about this and I also think this is worth to be taken over. But I don't have time to realize this. If no one has a something against this you could make realistic arm parts. CU Bernd (23 years ago, 24-Apr-02, to lugnet.cad.dev)
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| | Re: Digging up an old thread (was: The geometry of minifigs)
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(...) I would *love* it if someone were to redo the arms and hand with higher accuracy. :) Steve (23 years ago, 24-Apr-02, to lugnet.cad.dev)
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| | Re: Digging up an old thread (was: The geometry of minifigs)
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(...) Note that it's probably not possible to make proper arms that are backwards compatible because of the hand placement on the ends. So we'd need to assign new id numbers to the arms... right? Either that or we break a few thousand files. It may (...) (23 years ago, 25-Apr-02, to lugnet.cad.dev)
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| | Re: Digging up an old thread (was: The geometry of minifigs)
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(...) I have started working on an improved arm part - and agree this will need to use a new number to aboid backward compatibility issues. I'll try and post work-in-progress here when I have something worthy of comment. Chris (23 years ago, 28-Apr-02, to lugnet.cad.dev)
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