Rotation matrix

From: Frederic MACHEFERT (machefer@hep.saclay.cea.fr)
Date: Wed Feb 10 1999 - 18:06:42 MET

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	Hi, 

  I use 3d objects with Root. The rotation matrix for a 3D object doesn't
seem to be defined by three angles but its calculation involves six angles
called theta1, theta2, theta3, psi1, psi2, psi3. What is the meaning
of these angles ?

Thank you in advance.
Frederic.
	

-------- Frederic Machefert ------------
DAPNIA/SPP - Bat. 141 - Piece 26B
CEA-SACLAY - 91191 GIF-SUR-YVETTE Cedex - FRANCE
tel: (33) 01 69 08 46 03  fax: (33) 01 69 08 36 49
Frederic.Machefert@cea.fr

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