Alec Jacobson 99c27dfd3f boundary_faces --> boundary_facets 11 years ago
..
Makefile 831ee69608 main makefile and example makefiles fixed, Extras are broken 11 years ago
README f7f20ae33e better floors and scene rotation trackball tester 11 years ago
example.cpp 99c27dfd3f boundary_faces --> boundary_facets 11 years ago
trackball.cpp f7f20ae33e better floors and scene rotation trackball tester 11 years ago
trackball.h 4783f7505d IGL_HEADER_ONLY --> ~IGL_STATIC_LIBRARY 11 years ago

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/