hand interaction scaling

[peterclemenko]

the ability to scale an object with a hand interaction would really help for ux development

[Malcolmnixon]

It should be possible to create a "grab-scaling" script/node that can be attached as a child of an XRToolsPickable node which:

1. Subscribes to the XRToolsPickable.grabbed and XRToolsPickable.released script
2. Interrogate the XRToolsPickable._grab_driver to see if its being held by two hands
3. Scales by the distance between the two hands

If that works then we'd probably want to expose an XRToolsPickable.get_grab_driver() method rather than having the script reach in to the private _grab_driver field.

[peterclemenko]

That sounds ideal.