Solver Handler not switching hands when tracking both left and right Interactors

[srinjoym]

This issue has been migrated a new MRTK repository, and the status of this issue will now be tracked at the following location:

• Solver Handler not switching hands when tracking both left and right Interactors MixedRealityToolkit/MixedRealityToolkit-Unity#325

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Bug found during investigation of validating surface magnetism solver.

[srinjoym]

Validated on MRTK 3 - the core solver seems to be working as expected. The only issue was in the Solver Handler script - if it is set to track both hands through two interactors, then it will always prefer the left hand even if it's not currently tracked. This probably needs to be fixed as I would expect the solver to start tracking the right hand if the left goes out of view

Here's a video of the current state:

20230324_135257_HoloLens.mp4

[AMollis]

@srinjoym , this seems like a duplicate of this #11398 can you please confirm?

• [pre.14][solvers] SolverHandler IsHandTracked not working when handedness is set to Everything #11398

[AMollis]

Removing "blocking" until we verify there is no workaround for this issue. Suspected workaround:

• Add two solver handlers to object. One for left hand, one for right hand.

[srinjoym]

@AMollis This workaround doesn't work for me. Even with two solver handlers (one for left one for right) the object only follows the left hand. Suggests this is a separate problem from the other issue

Update: Looked into this further and the difference between the two issues is that I'm observing the issue with two interactors (far rays) vs. Matt's issue is observing the issue tracking two hand joints. I think we can make a fix for this specific issue without the upgrade to XRI 2.3 and I'm drafting a PR right now