[Silence]

Hi everyone,
I want to do a 3D simulation that a rigid body moves in an elliptical path, now I have:
1. Center axis of the ellipse(in vector form);
2.Length of semi-major axis a and semi-minor axis b, as is shown in the figure below;
3. Rotation speed of the object (rev/min)
How can I realize this motion, do I need to use UDF?
And furthermore, how to realize a motion that obecj moves in an any user-defined path?
Regards