Add Bluetooth mouse pointing source #2330
Description
Overview
A Bluetooth mouse as an input source could be a nice extension to Gaze and Gestures on HoloLens (and maybe also on other MR devices, but I cannot be sure about them). The logic could be as follows:
- When mouse is not used, the cursor points at center of the screen.
- When a mouse is connected and a move/button event occurs, cursor stops following the Gaze and changes its position further according to mouse, like in Windows Holographic shell.
- Move and Navigation for mouse can also be implemented.
- When the mouse appears to be inactive for >2sec, cursor gets back to center of the screen and follows the Gaze.
As far as I understood it, CustomInputSource is intended for Editor debugging purposes only, but if the above or similar functionality is already implemented, I will be glad to hear about it.
Implementation details
According to my observations, UnityEngine.Input.mousePosition produces invalid and huge numbers on device; looks like the implementaion should use UWP classes directly.
The corresponding input source can rely on another pointing source and produce pointing input as well:
class MouseInputSource: BaseInputSource, IPointingSource
{
[SerializeField] private GameObject basePointingSource;
[SerializeField] private float inactivityTimeout = 2;
// ...
}