Alec Jacobson (jalec 515954f566 fixed scene rotation makefile 11 年之前
..
Makefile 515954f566 fixed scene rotation makefile 11 年之前
README f7f20ae33e better floors and scene rotation trackball tester 11 年之前
example.cpp 7dd2ea26d9 boost extra, connected components in mesh 11 年之前
trackball.cpp f7f20ae33e better floors and scene rotation trackball tester 11 年之前
trackball.h f7f20ae33e better floors and scene rotation trackball tester 11 年之前

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/