Get the quaternion rotation between two points

jckut10 · 2007-06-19T00:48:54

How do I do that? This was the process I was using: * Find a vector v from p1 to p2. <-- Simple, just do p2 - p1, and normalize it. * Express an axis angle orientation A between the two points, with theta = 0 (or some other arbitrary value) and the axis equal to the vector v defined above. <-- a.theta = 0, a.x = v.x, a.y = v.y, a.z = v.z * Convert that axis angle to a quaternion <-- Really simple math; it's on this website. This doesn't seem to work, so I made an incorrect assumption somewhere. For the life of me I can't find an article that explains how to find a quaternion between two points. Can anyone show me where? Thanks

Math and Physics Programming

Started by jckut10 June 09, 2007 11:26 AM

9 comments, last by Manonthemoon 16 years, 10 months ago

Manonthemoon

122

June 19, 2007 12:48 AM

I think, the "rotation" and "rotation theta" together represent the quaternion. "rotation" represents the x,y,z axis, and "rotation theta" is an angle.

For example, "0 0 1 45" to rotate 45 degrees around the z-axis.