Alec Jacobson b7b0e47107 define glut active command in case it's not already пре 10 година
..
Makefile d30bc9a420 use common makefile пре 10 година
README f7f20ae33e better floors and scene rotation trackball tester пре 11 година
example.cpp b7b0e47107 define glut active command in case it's not already пре 10 година
trackball.cpp f7f20ae33e better floors and scene rotation trackball tester пре 11 година
trackball.h 4783f7505d IGL_HEADER_ONLY --> ~IGL_STATIC_LIBRARY пре 11 година

README

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/