Hi everyone,
I've been struggling trying to write a good orbit behaviour (i.e, move the view
transform in response to mouse movement such that it appears as though the scene is
rotating around an arbitrary point in the scene). I know this must be common code
since many 3D viewers have, yet I can't find any sample code to implement it.
I also tried the arcball concept, but it seems to require the center of rotation to be
on the screen (unless I implemented it incorrectly).
Most of my attempts work fine when the camera's frame is mostly aligned with the world
frame, but the mapping gets ruined after a lot of manipulation.
Can anyone point me to some sample code or at least a good reference on how to
implement this?
Thanks!
josh
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