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- This is a small program that demonstrates various 2D mouse input interfaces for
- control a 3D world-in-hand rotation.
- So far this implements:
- ROTATION_TYPE_IGL_TRACKBALL Continuous, "wrap-around" trackball, as seen in
- AntTweakBar.
- ROTATION_TYPE_BELL_TRACKBALL De facto "Standard" trackball, limited to 180°
- rotations.
- ROTATION_TYPE_TWO_AXIS_VALUATOR Rotate around drag vector by amount
- proportional to drag length.
- ROTATION_TYPE_TWO_AXIS_VALUATOR_FIXED_UP Rotate around fixed up-vector by x
- drag length and around y drag vector by y drag length. As seen in Maya, 3D
- Studio Max, etc.
- More trackball variantes could be snatched from here:
- http://opentissue.org/svn/OpenTissue/archieve/grid3d/OpenTissue/trackball/
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