Subject:
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Re: Mathematical assistance please
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Newsgroups:
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lugnet.cad.dev
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Date:
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Thu, 6 Jan 2005 21:20:40 GMT
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Viewed:
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1945 times
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In lugnet.cad.dev, Ross Crawford wrote:
<snip>
> > My mistake.... I am using 4-4cyls.dat. rotating them to align them with the
> > S0-S1-S2 plane is what I don't know how to do.
>
> It's hard work, but this page might help
> http://mathworld.wolfram.com/RotationMatrix.html
Rosco,
Thanks again. I understand rotation matricies (to some degree), I just don't
know how to come up with the rotation angle needed to twist the 4-4cyls.dat into
the right position.
One reason to push forward on my original solution is because the same
knowledge can be used to manage the twist in electrical cables that are bent.
>
> ROSCO
Kevin
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Message has 1 Reply:
 | | Re: Mathematical assistance please
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| (...) Could you transform the co-ordinate system so that one of it's axes is along the centre-line of the 4-4cyls (in the plane S0-S1-S2), rotate it about that axis so that the longest sise is in the plane, then transform the co-ord system back? (...) (20 years ago, 6-Jan-05, to lugnet.cad.dev)
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