I think the other convention is the "x-convention" ZXZ.
Is it safe to say that "show orientation" is going to continue
to elicit curiosity because of the unfamiliarity of Euler angles?
If so, perhaps a comment would help. Maybe:

>>show orientation

moveTo 1 -574 772 273 91.2;
OR
reset; rotate z -21.1; rotate y 86.9;; rotate z 52.2;
#No, damn it! It's not supposed to be "rotate x". THIS IS NOT A BUG.

or

>>show orientation

moveTo 1 -574 772 273 91.2;
OR
reset; rotate z -21.1; rotate y 86.9;; rotate z 52.2;
#Euler z-y-z convention
#see http://www.algebra.com/algebra/about/history/Euler-angles.wikipedia



:)

Bob


Miguel wrote:

The majority of mathematicians say that ZYZ is the established "standard" way to do it. As I recall, the aeronautical engineers (in the minority) do it another way (YZY?) ... but nobody does it XYZ.




-- Robert M. Hanson, [EMAIL PROTECTED], 507-646-3107 Professor of Chemistry, St. Olaf College 1520 St. Olaf Ave., Northfield, MN 55057 mailto:[EMAIL PROTECTED] http://www.stolaf.edu/people/hansonr




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