DefinitelyTyped/leapmotionTS/LeapMotionTS-tests.ts

import Leap = module('../LeapMotionTS');
var controller:Leap.Controller = new Leap.Controller();
controller.addEventListener( Leap.LeapEvent.LEAPMOTION_FRAME, ( event:Leap.LeapEvent ) => {
    var frame:Leap.Frame = event.frame;
    console.log( "Frame id: " + frame.id + ", timestamp: " + frame.timestamp + ", hands: " + frame.hands.length + ", fingers: " + frame.fingers.length + ", tools: " + frame.tools.length + ", gestures: " + frame.gestures().length );

    if ( frame.hands.length > 0 )
    {
        // Get the first hand
        var hand:Leap.Hand = frame.hands[ 0 ];

        // Check if the hand has any fingers
        var fingers:Leap.Finger[] = hand.fingers;
        if ( fingers.length > 0 )
        {
            // Calculate the hand's average finger tip position
            var avgPos:Leap.Vector3 = Leap.Vector3.zero();
            for(var i:number = 0; i < fingers.length; i++ )
                avgPos = avgPos.plus( (<Leap.Finger>fingers[ i ]).tipPosition );

            avgPos = avgPos.divide( fingers.length );
            console.log( "Hand has " + fingers.length + " fingers, average finger tip position: " + avgPos );
        }

        // Get the hand's sphere radius and palm position
        console.log( "Hand sphere radius: " + hand.sphereRadius + " mm, palm position: " + hand.palmPosition );

        // Get the hand's normal vector and direction
        var normal:Leap.Vector3 = hand.palmNormal;
        var direction:Leap.Vector3 = hand.direction;

        // Calculate the hand's pitch, roll, and yaw angles
        console.log( "Hand pitch: " + Leap.LeapUtil.toDegrees( direction.pitch ) + " degrees, " + "roll: " + Leap.LeapUtil.toDegrees( normal.roll ) + " degrees, " + "yaw: " + Leap.LeapUtil.toDegrees( direction.yaw ) + " degrees\n" );
    }

    var gestures:Leap.Gesture[] = frame.gestures();
    for ( var i:number = 0; i < gestures.length; i++ )
    {
        var gesture:Leap.Gesture = gestures[ i ];

        switch ( gesture.type )
        {
            case Leap.Gesture.TYPE_CIRCLE:
                var circle:Leap.CircleGesture = <Leap.CircleGesture>gesture;

                // Calculate clock direction using the angle between circle normal and pointable
                var clockwiseness:String;
                if ( circle.pointable.direction.angleTo( circle.normal ) <= Math.PI / 4 )
                {
                    // Clockwise if angle is less than 90 degrees
                    clockwiseness = "clockwise";
                }
                else
                {
                    clockwiseness = "counterclockwise";
                }

                // Calculate angle swept since last frame
                var sweptAngle:number = 0;
                if ( circle.state != Leap.Gesture.STATE_START )
                {
                    var previousGesture:Leap.Gesture = controller.frame( 1 ).gesture( circle.id );
                    if( previousGesture.isValid() )
                    {
                        var previousUpdate:Leap.CircleGesture = (<Leap.CircleGesture>controller.frame( 1 ).gesture( circle.id ) );
                        sweptAngle = ( circle.progress - previousUpdate.progress ) * 2 * Math.PI;
                    }
                }

                console.log( "Circle id: " + circle.id + ", " + circle.state + ", progress: " + circle.progress + ", radius: " + circle.radius + ", angle: " + Leap.LeapUtil.toDegrees( sweptAngle ) + ", " + clockwiseness );
                break;
            case Leap.Gesture.TYPE_SWIPE:
                var swipe:Leap.SwipeGesture = <Leap.SwipeGesture>gesture;
                console.log( "Swipe id: " + swipe.id + ", " + swipe.state + ", position: " + swipe.position + ", direction: " + swipe.direction + ", speed: " + swipe.speed );
                break;
            case Leap.Gesture.TYPE_SCREEN_TAP:
                var screenTap:Leap.ScreenTapGesture = <Leap.ScreenTapGesture>gesture;
                console.log( "Screen Tap id: " + screenTap.id + ", " + screenTap.state + ", position: " + screenTap.position + ", direction: " + screenTap.direction );
                break;
            case Leap.Gesture.TYPE_KEY_TAP:
                var keyTap:Leap.KeyTapGesture = <Leap.KeyTapGesture>gesture;
                console.log( "Key Tap id: " + keyTap.id + ", " + keyTap.state + ", position: " + keyTap.position + ", direction: " + keyTap.direction );
                break;
            default:
                console.log( "Unknown gesture type." );
                break;
        }
    }
} );