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unity-game-enginehololensmrtk

Understanding GazeProvider GazeDirection Vector3

I am working on taking two HoloLens 2 users' gaze data, and comparing them to verify they are tracking the same hologram's trajectory. I have access to the GazeProvider data, no issues there. However, the GazeProvider.GazeDirection data throws me. For instance, I've referenced the API at:

GazeDirection API Data

But, I dont really understand what the Vector 3 it returns means. Are the X,Y,Z relative motion? If not, can I use Vector3.angle to compute relative motion vectors between two points?

Solution

  • The vector returned by the GazeDirection property leveraging three coordinate parameters to point the direction that the user's eyes are looking towards. The origin is located between the user's eyes. The Vector3.angle method you mentioned can help you compute the angle between the two eye gaze directions.