/* a Pen by Diaco m.lotfollahi  : https://diacodesign.com */
var DOC=document,W=window;
function $(X){return DOC.querySelector(X)};
var TL=TweenLite,Throw=ThrowPropsPlugin,M=Math,
    close=$('#close'),
    fText=$('#Gem'),
    bText=$('#gem'),
    bLink=$('#boxL'),
    target=$('#target'),
    info=$('#info'),
    UX,UY,oldX=0,oldY=0,oR,R,TW=80,des=1,T,V=1,w,h,B;
    function DB(){
      w=W.innerWidth; h=W.innerHeight;
      B={minX:0,maxX:w,minY:0,maxY:h};
      D[0].applyBounds(B);
    };
    var flash=TL.fromTo('#back',0.2,{opacity:1},{opacity:0,paused:true,immediateRender:false}),
    boxT=TL.fromTo('#box',0.3,{autoAlpha:0},{autoAlpha:1,paused:true}),
    A = DOC.createElement('audio');
A.src = 'http://www.freesound.org/data/previews/260/260626_4759914-lq.mp3'; 
A.volume=.25; 
var D = Draggable.create(target,{
  onPress:function(){
    oldX=this.x;oldY=this.y;
    if(des){TL.to("#desc",0.2,{autoAlpha:0}); des=0;};
  },
  zIndexBoost:false , minDuration:5,
  onDragEnd: function(){ 
    Throw.to(target,{throwProps:{x:{velocity:"auto"},y:{velocity:"auto"}},onUpdate:Up});
  }
});
DB();
function Up(){
  var Tt=target._gsTransform,TX=Tt.x,TY=Tt.y,TB={minX:TX,maxX:TX+TW,minY:TY,maxY:TY+TW};
  if(TB.minX<B.minX||TB.maxX>B.maxX){UX=1}else{UX=0};
  if(TB.minY<B.minY||TB.maxY>B.maxY){UY=1}else{UY=0};
  if(UX || UY){
    T = M.floor(M.random()*Gems.length) ;
    fText.innerHTML = Gems[T]+' is Awesome !...' ;
    if(UX){TL.set(target,{x:TB.minX<B.minX?0:w-TW})};
    if(UY){TL.set(target,{y:TB.minY<B.minY?0:h-TW})};
    var vx = Throw.getVelocity(target,"x"),vy = Throw.getVelocity(target,"y"); 
    Throw.to(target,{throwProps:{x:{velocity:UX?-vx*V:vx},y:{velocity:UY?-vy*V:vy}},
      onUpdate:Up,onComplete:function(){ 
        bText.innerHTML='GSAP '+Gems[T];
        bLink.innerHTML=Gems[T];
        info.innerHTML=PDes[T];
        bLink.setAttribute('href','http://greensock.com/docs/#/HTML5/'+links[T]);
        boxT.play(0);
      }
    });
    oldX=TX; oldY=TY; flash.play(0); A.currentTime=0; A.play();
  };
  R = M.atan2(TY-oldY,TX-oldX);
  if(oR!=R){ 
    var nR = M.round(R*180/M.PI);
    TL.set(target,{rotation:nR});
    oR=R; 
  }
};
close.addEventListener('click',function(){boxT.reverse()});
W.addEventListener("resize",DB);
function setV(X){V=X.value};


/* a Pen by Diaco m.lotfollahi  : https://diacodesign.com */


var Gems = ['TweenMax','Draggable','ThrowProps','SplitText','SvgMorph','Physics2D','DrawSVG'],
links=['GSAP/TweenMax/','Draggable/','ThrowPropsPlugin/','Utilities/SplitText/','','Plugins/Physics2DPlugin/','Plugins/DrawSVGPlugin/'],
PDes=[
  "TweenMax extends TweenLite, adding many useful (but non-essential) features like repeat() , repeatDelay() , yoyo() , and more. It also includes many extra plugins by default, making it extremely full-featured. you the step of loading the common ones like CSSPlugin , RoundPropsPlugin , BezierPlugin , AttrPlugin, DirectionalRotationPlugin as well as EasePack , TimelineLite , and TimelineMax.",
  "Provides a surprisingly simple way to make virtually any DOM element draggable, spinnable, tossable, and even flick-scrollable using mouse and/or touch events, plus Draggable integrates beautifully (and optionally) with ThrowPropsPlugin.",
  "ThrowPropsPlugin allows you to smoothly glide any property to a stop, honoring an initial velocity as well as applying optional restrictions on the end value.ThrowPropsPlugineven integrates VelocityTracker so that you can have it 'watch' certain properties to keep track of their velocities for you and then use them automatically when you do a throwPropstween.",
  "SplitText makes it easy to break apart the text in an HTML element so that each character, word, and/or line is in its own &lt;div&gt; , making complex animation simple. SplitText automatically works around various browser inconsistencies and recognizes line breaks appropriately. Plus it is highly configurable.",
  "MorphSVGPlugin provides advanced control over tweens that morph SVG paths",
  "Provides simple physics functionality for tweening an Object's x and y coordinates (or 'left' and 'top') based on a combination of velocity, angle, gravity, acceleration, accelerationAngle, and/or friction.serves as a way to easily create interesting physics-based effects with the GreenSock animation platform.",
  "DrawSVGPlugin allows you to progressively reveal (or hide) SVG strokes to make them look like they're being drawn. It does this by controlling the stroke-dashoffset and stroke-dasharray CSS properties."
];