Hand Tracking Manager for Lens Studio

This script creates super handy callbacks for hand tracking - whether it's on mobile, Spectacles, or emulating using tap & hover in the preview panel!
On Spectacles, this should be combined with Spectacles Interaction Kit.

twitter (@maksvanleeuwen)

(This script needs LSQuickScripts in your project in order to work.)

Usage

Callbacks (any hand)

Bind using .add(f) and .remove(f).
Bind to HandTracking, for example: HandTracking.onPinchStart.add( function(pos, isTap){} ).

• .onPinchStart → (pos, isTap)
• .onPinchHold → (pos, isTap)
• .onPinchEnd → (pos, isTap)
• .onTrackStart → (isTap)
• .onTrackEnd → (isTap)
• .onActiveHandChange → (prvHand, curHand)

Tracking Info

• .getActiveHand() → Hand
• .getDominantHand() → Hand
• .getPinching() → bool
• .getPinchPosition() → vec3
• .getPinchForward() → vec3 (normalized)
• .getPinchUp() → vec3 (normalized)
• .getHoverScreenPosition() → vec2
• .getHoverWorldPosition() → vec3

Data Types

• pos: position vec3, world space
• isTap: bool if emulated (preview panel tapping instead of pinch)
• Hand: string ('left'|'right')