4 ms·
Unit quaternions are isomorphic to rotors, so there’s no practical difference between the two. The difference is how you introduce the concept of 3d rotation: t
by aaaaaaaaaab 8y ago
Unit quaternions are isomorphic to rotors, so there’s no practical difference between the two. The difference is how you introduce the concept of 3d rotation: the “traditional” way is to introduce quaternions with i^2 = j^2 = k^2 = -1, and then do some handwaving to convince the reader that they are good for 3d rotations. The bivector formalism is more natural and needs no handwaving.
- vertline3 8y agoThank you! I am really starting webgl, opengl study, and so I am hoping to start on the right footing. I was beginning those quaternion videos, but I think it will benefit me to look closely here too!
- aaaaaaaaaab 8y agoMake sure you understand the Rodriguez rotation formula first, then move onto quaternions and rotors. Whenever you become confused, just write out all the terms and you’ll get back to Rodriguez’s formula.
- vertline3 8y agoThank you! Will do