Rotation Problems

[chamber440]

Im importing lots of data from a text file which discribes some complex geometry including the faces, their respective normals the and cross product of the normal to the y (0,1,0) axis and the angle.
im trying to script in python some other objects that are placed on those faces and are alligned with the normals. these other objects are a skeleton and a skin. the joint movement ill script later according to other data in my text file to make a swarm based animation on the surface of my geometry.at least that is the plan but i seem to be unable to get the allignment right.
ive tried every sequence of rotation and alligning the axis but it just wont work.
so the question is:
if i have the axis of rotation, and the angle which should get my object on the right vector how do i rotate that. which rotation order etc

thanks!

[joojaa]

QUOTE(janjacobsv @ 02/09/09, 04:44 AM) [snapback]300508[/snapback]
if i have the axis of rotation, and the angle which should get my object on the right vector how do i rotate that. which rotation order etc

Maya can do any rotation order just instruct it to use some other sequence.

http://www.euclideanspace.com/maths/geomet...Euler/index.htm

However the real problem is what order did the OTHER engine use? If the y angle is not the last one accounted for then you dont have proper axis angles so it might be a bit hard to do any import.

You dont usually call the rotation in axis angles as the one around y because its NOT its about the axis.

[chamber440]

thanks, i reprogrammed my other script in virtools to provide me with euler angles instead of vector and single angle, it now works miracles....seriously