CalibrateEye.js

• This script runs the Calibration scene. It is in charge of the GUI, the only visible thing in the scene.
• The variables offset_x, offset_y, gain_x, and gain_y are set with sliders on the GUI, and will be transferred back to the LoadLevel script when we're done.
• To use this scene, just ask the subject to look at one of the numbered dots (each of which you can highlight by pressing the corresponding number key) or follow the mouse with his/her eyes. Then move the sliders accordingly so that the small dot indicating eye position falls on or near the correct location.

- Created ~5/2012 by DJ.

- Updated 10/22/13 by DJ - added numbered dots, slider labels, comments.