MX Ink Integration

This add-on shows how to integrate the Logitech MX Ink pen in a Fusion project.

It includes the Unity integration package, with some modifications to handle special error cases if the Meta SDK is not installed, if the pen is not available, or to be able to sublcass some components.

Content

HardwareMXPen

The HardwareMXPen component provides tiny modifications over its parent class VrStylusHandler, provided in Logitech's nity integration package.

Mostly, it allows to force the emulation of a MX Ink presence in editor, with 2 options:

• forceRightHandPen: if true, in the editor, the right controller will be considered as a MX Pen, wheter it is really one or not
• forcedHandPenIsAController: by default, the tip pressure input matches the controller x stick axis, no pressure being a 1 value on the axis, and the maximum pressure being a 0 value. If true, this logic is reversed, so that a resting controller can be used without drawing all the time. If fals,e the default logic is used, so that an actual MX Pen used as a controller will behave normally.

The HardwareMXPen is supposed to be placed on an hardware rig, to detect a local pen.
As with the VrStylusHandler, left_touch_controller and right_touch_controller have to be provided, so that the proper one is hidden when a pen instead of a controller is detected.

NetworkMXPen

The NetworkMXPen class drives a sibling NetworkLineDrawer from the LineDrawing add-on.

The current implementation has the following logic :

• add a drawing point when either the MX Ink pressure or tip buttons are pressed (and starts a drawing and/or a line if needed)
• stop the current line if the pressure on both buttons is 0
• stop the current drawing when a button next to the pressure button is pressed
• stop the current drawing if the stylus stops being detected

The class also handles specifying which part of the network rig to hide when the MX Ink replaces a hand. It can be automatically configured when using NetworkHand components by setting the automaticallyDetectNetworkHands value to true

Dependencies

• LineDrawing
• DataSyncHelpers
• XRShared

Demo

A demo scene can be found in the Assets\Photon\FusionAddons\MXInkIntegration\Demo\ folder.

Download

This addon latest version is included into the free XR addon project

Supported topologies

• shared mode

Changelog

• Version 2.0.0: First release