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Index › Programming Questions & Help › OpenGL and 3D Libraries › OCD Problem

liminal YaBB Newbies Offline Posts: 22	OCD Problem Mar 13th, 2006, 5:04am   Hi, I'm using the OCD camera library and am unable to get it to circle an XY-plane ground. Can anyone help with this? Apologies for the cross-post to the library area, but I thought different people with more 3D chops might see the question here. Thanks!

mflux Senior Member Offline Posts: 388	Re: OCD Problem Reply #1 - Mar 14th, 2006, 5:37am   Sounds like a gimbal lock problem.... Not gonna be an easy solution I don't think. Does OCD handle quaternions..?
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liminal YaBB Newbies Offline Posts: 22	Re: OCD Problem Reply #2 - Mar 14th, 2006, 11:01pm   It does rotate, but the Up-Vector gets all messed up as you go around. I think it might have to do with the OCD camera having a different notion of which axis is normally 'up' (not Z), but my attempts so far to address this have all failed.

mflux Senior Member Offline Posts: 388	Re: OCD Problem Reply #3 - Mar 15th, 2006, 7:18am   What if you rotated your entire scene to reflect the OCD camera's properly working up-axis? Would this be difficult? Maybe it just needs a rotation matrix applied before you do anything, and perhaps that can be a work-around.
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