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?

The API has been moved to the wiki page