lamous

main.js

/* globals define */
define(function(require, exports, module) {
    'use strict';
    // import dependencies
    var Engine = require('famous/core/Engine');
    var Modifier = require('famous/core/Modifier');
    var Transform = require('famous/core/Transform');
    var ImageSurface = require('famous/surfaces/ImageSurface');

    // create the main context
    var mainContext = Engine.createContext();

    // your app here
    var logo = new ImageSurface({
        size: [200, 200],
        content: '/content/images/famous_logo.png',
        classes: ['backfaceVisibility']
    });

    var initialTime = Date.now();
    var frontFinger;

    var centerSpinModifier = new Modifier({
        origin: [0.5, 0.5],
        transform : function() {
            return frontFinger ? Transform.rotateY(frontFinger.stabilizedTipPosition[0]/100) : Transform.rotateY(.002 * (Date.now() - initialTime));
        }
    });

    mainContext.add(centerSpinModifier).add(logo);

    function frontFinger(fingers, frontFinger){
        for (var i = 0; i < fingers.length; ++i){
            if (!frontFinger) {
                frontFinger = fingers[i];
            } else {
                var finger = fingers[i];
                if (finger.stabilizedTipPosition &&
                    finger.stabilizedTipPosition[2] > frontFinger.stabilizedTipPosition[2]) {
                    frontFinger = finger;
                }
            }
        }

        return frontFinger;
    }

    Leap.loop( function(frame){
        if (!(frame.valid && frame.hands.length)){
            return;
        }

        debugger;
        frontFinger = null;
        for (var i = 0; i < frame.hands.length; ++i){
            var hand = frame.hands[i];
            frontFinger = frontFinger(hand.fingers, frontFinger);
        }

        if (frontFinger){
            console.log('frontFinger stp: ', frontFinger.stabilizedTipPosition[2]);
        }
    });
});