How does three.js handle rotations by non-unit quaternions?

[hofk]

Maybe this will help you?

Quaternion - Axis, Angle Visualization

I’ve been using quaternions. Because rotation in space is not easy, I was looking for a simple visualization. I found a lot of theory about quaternions and a workable converter. http://www.energid.com/resources/orientation-calculator/ But no visualization for my own requirements. So I created it myself. Quaternion and axis, angle are continuously converted into each other. [quaternion] If you want to try the little helper, you will find him there: http://threejs.hofk.de/ or directly ther…