getting started with srapinal sdk and obtaining gaze data

[mrk88]

Hi all,

 

I've just got my hands on the Vive Pro and like to get some gaze data out of it in Unity. I notice that in SRapinal_eye.cs all the functions are boolean. Can somebody tell me how can I get some gaze position data and other gaze features (such as timestamp and pupil position , etc ) in my own c# file?

 

[Corvus]

Here's some sample code to help you get started in Unity.

 

private static EyeData eyeData;private static VerboseData verboseData;private float pupilDiameterLeft, pupilDiameterRight;private Vector2 pupilPositionLeft, pupilPositionRight;private float eyeOpenLeft, eyeOpenRight;void Update(){    SRanipal_Eye.GetEyeData(ref eyeData);    SRanipal_Eye.GetVerboseData(out verboseData);    // pupil diameter    pupilDiameterLeft = eyeData.verbose_data.left.pupil_diameter_mm;    pupilDiameterRight = eyeData.verbose_data.right.pupil_diameter_mm;    // pupil positions    pupilPositionLeft = eyeData.verbose_data.left.pupil_position_in_sensor_area;    pupilPositionRight = eyeData.verbose_data.right.pupil_position_in_sensor_area;    // eye open    eyeOpenLeft = eyeData.verbose_data.left.eye_openness;    eyeOpenRight = eyeData.verbose_data.right.eye_openness;}

[mrk88]

Great, Thanks!

 

So this code return all zero values. Do I need to do anything before getting these data?

[Corvus]

Do you have "SRanipal_Eye_Framework.cs" attached to a game object in the scene with "Enable Eye" checked?

[Cliona]

Hi, I'm just wondering whether having the "SRanipal_Eye_Framework" attached to a game object with "Enable Eye" was your issue with this? I have all of that done, and included the above script and still get zero values in my Debug.Log. I'm very new to Unity, sorry if my question is simple.

Thank you in advance.

[alwyuyang]

On 7/15/2019 at 6:45 PM, Corvus said:

Here's some sample code to help you get started in Unity.

 

private static EyeData eyeData;private static VerboseData verboseData;private float pupilDiameterLeft, pupilDiameterRight;private Vector2 pupilPositionLeft, pupilPositionRight;private float eyeOpenLeft, eyeOpenRight;void Update(){    SRanipal_Eye.GetEyeData(ref eyeData);    SRanipal_Eye.GetVerboseData(out verboseData);    // pupil diameter    pupilDiameterLeft = eyeData.verbose_data.left.pupil_diameter_mm;    pupilDiameterRight = eyeData.verbose_data.right.pupil_diameter_mm;    // pupil positions    pupilPositionLeft = eyeData.verbose_data.left.pupil_position_in_sensor_area;    pupilPositionRight = eyeData.verbose_data.right.pupil_position_in_sensor_area;    // eye open    eyeOpenLeft = eyeData.verbose_data.left.eye_openness;    eyeOpenRight = eyeData.verbose_data.right.eye_openness;}

Why don't you create a subthread to read and send the data so that to have the data with 120 Hz? 

Did you try that (I fail to do that because I don't know how to manage the thread in Unity3d). Thank you if you have any ideas. 

 

Edited February 11, 2020 by alwyuyang

[Corvus]

@alwyuyang Please see this thread for a sample of reading data at 120hz with threads: https://forum.vive.com/topic/5897-getting-verbosedata-at-the-fastest-rate-possible/?do=findComment&comment=26428

 

[alwyuyang]

On 2/12/2020 at 3:53 AM, Corvus said:

@alwyuyang Please see this thread for a sample of reading data at 120hz with threads: https://forum.vive.com/topic/5897-getting-verbosedata-at-the-fastest-rate-possible/?do=findComment&comment=26428

 

I tried with that code, but I cannot close my application when it should be closed( like crash) . Do you have any updated version which can overcome this problem? Thank you very much. 

 

@Corvus

[xumy]

Hello, I would like to ask where this sample code is added? @Corvus