TobiiXR.GetEyeTrackingData

[Hachi]

Hello
There are two types of data that can be acquired with TobiiXR.GetEyeTrackingData: Local and World. In addition, GazeRay has Origin and Direction. I think the origin will be the HMD’s System origin (that is, the position between the two eyes) when you get GazeRay in World, but what does origin mean when you get GazeRay in Local?
If it also refers to the HMD System origin, why isn’t it 0?

Also, what is the arrangement of the Origin and Direction coordinate systems? Which variable of x, y, z becomes + or-when you move your eyes to the right?

please tell me.

[Grant [Tobii]]

Hi @hachisugayusuke and thanks for reaching out. We have compiled an extensive user guide on the details of the co-ordinate system used by the XR SDK
which you can find @ https://vr.tobii.com/sdk/learn/technical-information/coordinate-systems/

Threin you should find all the answers to your questions! Please check it out and do let us know if anything remains unclear. Best Wishes.

[Author]

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