measure Eye IPD data

[Lian]

Hi Vive expert,

We bought the VIVE Proeye tracking system and doing some eye tracking research. It does work well. Now I want to get the eye IPD value from C++. I do have the SRanipal sample download and tested. in C++ it just return the eye tracking vector data. Could you give me some suggestion about how to get  the eye IPD? Because we need this value to make sure subject is correctly wear the headset and both eyes are looking at the right way.

Thank you very much.. 

 

@Daniel_Y @Corvus

[Daniel_Y]

After you performance eye calibration, you could read IPD via SteamVR/OpenVR.

[Lian]

Hi @Daniel_Y

I actually want to get eye IPD value from C# application. not through the Unity. and SteamVR. IsI see the ViveSR classes has some SingleEyeData. Is one of them can be used to calculate the IPD?

Thank you very much.

[Daniel_Y]

SingleEyeData as its name you can only know single eye's information but without the relation between 2 eyes. Thus, you need to use OpenVR API to know the current distance of 2 lens of HMD, i.e IPD.

[Lian]

Hi Daniel_Y,

Thanks for your information. That explain the problem I have. One more question, is that possible to get the OpenVR API without turn on the SteamVR? Because I need to run my application with Direct Display mode.

Thanks again,

[Daniel_Y]

If you do not plan to use SteamVR, what way you use to render the content to HMD?