LeapJS

LeapJS is a Javascript library that provides the functionality and object structure of the Leap API to assist developers who are working with the Leap Motion in a browser environment.

Including

Include Leap.js for debugging and access to "private" variables:

<script src="Leap.js"></script>

Include Leap.min.js for deployed applications to reduce load times:

<script src="Leap.min.js"></script>

Tutorial

// Create a controller to connect to the Leap Motion
myController = new Leap.Controller("ws://localhost:6437/");

// Create a listener
myListener = new Leap.Listener();

// Listener.onFrame is called each time a frame is received
myListener.onFrame = function(controller){

    var frame = controller.frame();
    var hands = frame.hands();
    var pointables = frame.pointables();
    
    var gestures = frame.gestures();
    
    // Awesome code goes here
}

// Add the listener to the controller
myController.addListener(myListener);

// Enable the screenTap gesture
myController.enableGesture("screenTap", true);

// Listener.onConnect is called when the connection is open
myListener.onConnect = function(controller){
 
    // Calibrate the screen
    calibrate = new Leap.Calibrate(controller);
    calibrate.onComplete = function(screen){
        // Save the screen
        // Or access it later with myController.calibratedScreens()[0]
    }
}

Whats new? Gestures!

Gesture.Type
- "circle"
- "keyTap"
- "screenTap"
- "swipe"
CircleGesture : Gesture
KeyTapGesture : Gesture
ScreenTapGesture : Gesture
SwipeGesture : Gesture
Controller
- void enableGesture( string type, Bool enable )
- Bool isGestureEnabled( string type )
Frame
- GestureList gestures()
- GestureList gestures( Frame sinceFrame )

Whats new? Calibration!

Calibrate
- Calibrate( Controller controller )
- virtual void onComplete( Screen screen )
Screen
- Screen()
- float distanceToPoint( Vector point )
- { position : Vector, distance : float } intersect( Pointable pointable, Bool normalize )
- { position : Vector, distance : float } intersect( Vector position, Vector direction, Bool normalize )
- { position : Vector, distance : float } project( Pointable pointable, Bool normalize )
- { position : Vector, distance : float } project( Vector position, Bool normalize )
- Vector normal()
- void offset()
- Bool isValid()
- static Screen invalid()

Where is the API?