Re: [PyMOL] CGO rotate vs quaternion

2013-11-24 Thread Tsjerk Wassenaar
Hi Pawel, Have a look here: http://euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/index.htm It should provide some insight into what quaternions are and how you can use them to rotate or obtain an axis-angle representation. Cheers, Tsjerk On Sun, Nov 24, 2013 at 11:31 PM, Паве

[PyMOL] CGO rotate vs quaternion

2013-11-24 Thread Павел Томашевский
Hi all, Ok, so today I have to admit that I don't know what quaternions are but I will need to use them. I'm working on PyMOL and Sensable Phantom Omni haptic device integration using Virtual Reality Peripherial Network (VRPN). So far I have a nicely working plugin for PyMOL that can retreive X,