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Eye gaze data in HMD

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accroding to these article(https://community.viveport.com/t5/Vive-SRanipal-SDK/How-to-get-raw-data-of-eye-position/m-p/31753 and https://community.viveport.com/t5/Vive-SRanipal-SDK/Vive-Pro-Eye-Finding-a-single-eye-origin-in-world-space/m-p/31592#M10)

I still have some questions for getting  data from eyes.
1.How can I get the coordinate data  here?

2.Is  "pupil_position_in_sensor_area" get the coordinate  data  here?

I print the "pupil_position_in_sensor_area" and "position" but it never approach to (1,1) or (-1,-1).

3.In addition, the "GazeRay" also never approach to the corner of  scene in the unity . How can I let the ray shot to the corner(actually this question is extremly similar to question 1)


Please explain more detail, I'am just dull. Thanks for help :)

(   - tag added by moderator) 

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