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Subject: 
Re: MLCad wishlist (was Re: Ice Cream
Newsgroups: 
lugnet.cad.mlcad
Date: 
Thu, 9 Dec 1999 03:30:02 GMT
Viewed: 
1587 times
  
3D rotations are not transitive.
--Jack Gregory

Mogens Sørensen <Djelle@get2net.dk> wrote in message
news:FMFuD4.6t4@lugnet.com...
Hi everybody. This is my first post on Lugnet :-)

LEdit rotations are calculated like:
<New Orientation> = <Current Orientation> * <New rotation>

MLCAD rotations seem to be calculated like:
<New Orientation> = <New rotation> * <Current Orientation>

As fare as I remembers, A*B is equals to B*A :-) But I get your idea.



Message has 1 Reply:
  Re: MLCad wishlist (was Re: Ice Cream
 
In other words, A*B is not equal to B*A, when A and B are matrices. Steve (...) (25 years ago, 9-Dec-99, to lugnet.cad.mlcad)

Message is in Reply To:
  Re: MLCad wishlist (was Re: Ice Cream
 
Hi everybody. This is my first post on Lugnet :-) I just discovered MLcad (and LDraw) a few days ago. And I jumped in joy. I believe that it is nearly 20 years since I played with Lego. (...) As fare as I remembers, A*B is equals to B*A :-) But I (...) (25 years ago, 8-Dec-99, to lugnet.cad.mlcad)

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