Controller Tracking

[stepjam]

Hi Christopher,

Thanks for your work on this repo!

I'm trying to track the handheld (vive) controllers. I see that you have an example of how to track the HMD here. When I inspect the views object. it only has 2 items (left and right eye). How am I able to include the controllers in this view?

Thanks in advance!

[cmbruns]

This is a good question I don't have a clear answer for. The hello_xr example in the pyopenxr_examples repo puts cubes on the controller positions, so the information is there. But it's somewhat confusing.

We should aim to eventually have a super simple example like track_hmd.py that shows the controller positions. Doing this properly would likely involve path strings like "/user/hand/left".

[cmbruns]

Update: There is now a track_controller.py example at https://github.com/cmbruns/pyopenxr_examples/tree/main/xr_examples that should work with today's release.

[stepjam]

Amazing! I'll try it out today. Thanks!

[stepjam]

@cmbruns orientation seems to be working, but the position stays constant (x=0.2, y=1.3. z=0.5). Does this happen on your end?

[cmbruns]

@stepjam Thanks for trying this out. I don't have time to investigate this right this minute. Maybe tonight or tomorrow. In the meantime, what's your system? Mine is [Windows,Linux]/SteamVR/HtcViveClassic/OpenGL.

[stepjam]

Thanks!
My system is Linux/Monado/HTCViveClassic/Vulkan

[cmbruns]

@stepjam Vive wand position tracking is working for me on Windows at least. I suspect the position tracking trouble you experienced is related to Monado. The hardware support table at https://monado.freedesktop.org/#supported-hardware includes the following:

Device	Rotation	Position	Distortion Correction	Additional Notes
OSVR HDK 1.x, 2.x	Yes	No	No	Requires workaround on AMD GPUs1. Firmware fix available2
HTC Vive	Yes	LH 1.0: No	Yes	Supported by OpenHMD, Monado “vive”, or Monado “survive”

Maybe you can experiment with OpenHMD, "vive", and "survive" (whatever those are). If you gain any wisdom that might be of use to others, please consider creating a new page in the wiki here https://github.com/cmbruns/pyopenxr/wiki

I'm glad you have the monado runtime working. Please try as many of the examples as you can, to help shake out any other troubles with the monado runtime. I have not yet succeeded in getting monado working here. Your help getting monado working well with pyopenxr would be much appreciated.