Sample result: https://phiresky.github.io/eyetrack-visualize
Tool to visualize a logged eye track from watching a video in the browser.
LogEyePosition.cs is a small script that logs the eye position using the Tobii SDK and a Tobii Eyetracker (e.g. EyeX) into a simple plain text file.
That file is read by the browser to produce a heatmap overlay over the video.