This is a small wrapper for The Eye Tribe Java Client for Processing. Hopefully, this will make eye tracking more accessible for rapid prototyping. You'll need a The Eye Tribe tracker and the accompanying software package (i.e. The Eye Tribe server).
More information on these can be found at theeyetribe.com.
You can download a build of the library here. You can also build it yourself:
$ cd libeyetracking/resources
$ ant
After you have calibrated the tracker using The Eye Tribe GUI, you can
simply run this small sketch in order to get a feeling for how eye
tracking works (located in
examples/HelloEyes):
// -*- mode: java; c-basic-offset: 2; indent-tabs-mode: nil-*-
import dk.itu.pitlab.libeyetracking.*;
EyeTracker tracker;
public void setup() {
size(displayWidth, displayHeight);
background(0);
ellipseMode(CENTER);
smooth();
tracker = new EyeTracker(this);
}
public void draw() {
clear();
noFill();
strokeWeight(10);
// Circle is green when tracking, red otherwise.
if (tracker.isTracking())
stroke(0, 255, 0);
else
stroke(255, 0, 0);
// Counter arm rotation by rotating gaze coordinates
// into the opposite direction.
PVector c = tracker.gazeCoords();
c.rotate(-radians(tracker.roll()));
// Scale circle by inter-pupillary distance.
float ipd = tracker.ipd();
float ipd2 = ipd * ipd * ipd * 10000;
ellipse(c.x, c.y, ipd2, ipd2);
}
This repository is based on the Processing library template.