MathGroup Archive 1996

[Date Index] [Thread Index] [Author Index]

Search the Archive

What is Euler phi in Rotate3D[obj, phi,theta,psi]


Why is it that: Rotate3D[object3D, Pi/2, Pi/2, 0] doesn't show the
same picture as Rotate3D[Rotate3D[object3D, 0,Pi/2,0], Pi/2, 0, 0]?

It seems that the angle PHI doesn't behave according to the
definition on p.113 of Guide to Std Mma Pkg.   As far as I
understand it, the definition of Rotate3D[obj, phi, theta psi] is
Rotate3D[Rotate3D[Rotate3D[obj,0,0,psi],0,theta,0],phi,0,0].
(THETA and PSI are clockwise rotation wrt X and Z axis).

I'm sure I'm missing something.  THANK YOU in advance for any 
clarification.

Alto   adbened at aruba.ccit.arizona.edu

==== [MESSAGE SEPARATOR] ====


  • Prev by Date: ISSAC'96 ADVANCE PROGRAM AND REGISTRATION
  • Next by Date: implementation of cos,sin,tan,etc.
  • Previous by thread: ISSAC'96 ADVANCE PROGRAM AND REGISTRATION
  • Next by thread: implementation of cos,sin,tan,etc.