Spawning the LMHeadMountedRig in the right position

[tareqahmed]

Hello all,

I'm having some trouble trying to come up with a solution to consistently spawn the player at a specific position. In my unity scene I have a cockpit with a joystick. I also have a physical joystick as well. If the player moves their physical joystick around, the in-game joystick would rotate accordingly.

This means that I have the physical joystick in roughly the same position as the virtual stick. The issue is that I can't seem to position the LMHeadMountedRig prefab in the correct position so that the leap-hands would appear to grab the stick. What I have tried doing is placing an empty game object in position I want, setting the prefab as a child and disabled. I then have a script that caches the prefab, sets the prefabs localPosition and then enable it. This works fine until I put on the headset, where I appear to be way offset.

I could modify the provided offset script, but that is a bit tedious having to do everytime I run the scene. Is there a way to do some sort of calibrating some how so that the prefabs realigns itself to be in the corrent position?

Hope that makes sense

[AlexColgan]

You could calibrate the position of the joystick in virtual space like we did with this experiment a couple of years back: http://blog.leapmotion.com/punch-hyperspace-vr-cockpit-leap-motions-latest-experimental-project/

[tareqahmed]

Thanks, that looks like exactly what I'm after. The issue is that I can't run it (using an older Oculus runtime?) Don't suppose you guys have a written guide specifically on doing calibration implementation?

edit: having watched the video a couple times, did you guys just use the alignment "scene" to get the transform coordinate so that when you load the game scene, all you did was instantiate the flighstick and throttle gameobjects and set their transform coordinates to match the coordinates you got from the alignment scene?

[AlexColgan]

Correct on both fronts -- it was built in the Oculus 0.6 runtime, and we used the alignment scene to get the coordinate. Naturally if you move the joystick from its base position after the alignment scene, the physical and virtual joysticks will no longer correspond.

[tareqahmed]

Thank you for the reply. I was wondering whether the passthrough feature has been implemented in the orion update yet? Last post I can find was by Joe back in 2016

[AlexColgan]

Are you referring to Image Hands, or passthrough more generally?

[tareqahmed]

I don't know what you've called it but basically the view where you can see your physical hands. In your HOTAS demo, you used it to align the joystick to your hand position.

[AlexColgan]

That would be Image Hands. There's no Image Hands implementation in the Orion assets, mostly because the tracking has developed substantially since then, and because they didn't play well aesthetically with different VR scenes (especially with shaders and semi-transparent objects).

[tareqahmed]

I see, that's a shame then. Does make it difficult to align the controller though. Open to ideas