Eye Tracking Unity Demo

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Environment：

• PUI 5.4.0
• Unity 2021.3.13f1
• Pico Unity Integration SDK 2.1.4

Applicable devices:

• PICO 4 Pro

Description：

To enable eye tracking feature you need to mark the Eye Tracking check box on PXR_Manager:

• There are 3 parts in this project. A spot light is used to show an approximate eye gaze area.

1. User Calibration

This part shows how to get eye-tracking data with PXR_EyeTracking.GetCombineEyeGazeVector(out combineEyeGazeVector) and PXR_EyeTracking.GetCombineEyeGazePoint(out combineEyeGazeOrigin). Then by applying the HeadPostMatrix, you can make a sphere cast to interact with 3D objects. You can also adjust eye tracking offest with trigger button on right controller.

2. 3D models

This part shows you how to detect if a 3D model with animation is focused or unfocused by eye-tracking. To create your own eye tracking interactive game object, you can simply derive from ETObject and implement IsFocused() and UnFocused().

3. Avatar

This part shows you how to get and apply eye openness to an avatar by calling PXR_EyeTracking.GetLeftEyeGazeOpenness(out leftEyeOpenness) and PXR_EyeTracking.GetRightEyeGazeOpenness(out rightEyeOpenness).