libigl_Martin/examples/trackball

This is a simple GLUT-based example that shows how to use igl's trackball.h
function.

To compile:
make

Usage:
./example
or
./example [positive speed factor]

Interaction:
Drag on screen to use trackball
Press SPACE to change shape

Example #1:
# use a speed factor of 2: twice as fast trackball
./example 2