(function(window,document,undefined){
 
 
 
 
 
 
    function ribbon( context )
    {
    	this.init( context );
    }
 
    ribbon.prototype =
    {
    	context: null,
 
    	mouseX: null, mouseY: null,
 
    	painters: null,
 
    	interval: null,
 
    	init: function( context )
    	{
    		this.context = context;
    		this.context.lineWidth = 1;
    		this.context.globalCompositeOperation = 'source-over';
 
    		this.mouseX = SCREEN_WIDTH / 2;
    		this.mouseY = SCREEN_HEIGHT / 2;
 
    		this.painters = new Array();
 
    		for (var i = 0; i < 50; i++)
    		{
    			this.painters.push({ dx: SCREEN_WIDTH / 2, dy: SCREEN_HEIGHT / 2, ax: 0, ay: 0, div: 0.1, ease: Math.random() * 0.2 + 0.7 });
    		}
 
    		this.isDrawing = false;
 
    		this.interval = setInterval( bargs( function( _this ) { _this.update(); return false; }, this ), 1000/100 );
    	},
 
    	destroy: function()
    	{
    		clearInterval(this.interval);
    	},
 
    	strokeStart: function( mouseX, mouseY )
    	{
    		this.mouseX = mouseX;
    		this.mouseY = mouseY
 
    		this.context.strokeStyle = "rgba(" + COLOR[0] + ", " + COLOR[1] + ", " + COLOR[2] + ", 0.05 )";		
 
    		for (var i = 0; i < this.painters.length; i++)
    		{
    			this.painters[i].dx = mouseX;
    			this.painters[i].dy = mouseY;
    		}
 
    		this.shouldDraw = true;
    	},
 
    	stroke: function( mouseX, mouseY )
    	{
    		this.mouseX = mouseX;
    		this.mouseY = mouseY;
    	},
 
    	strokeEnd: function()
    	{
 
    	},
 
    	update: function()
    	{
    		var i;
 
    		for (i = 0; i < this.painters.length; i++)
    		{
    			this.context.beginPath();
    			this.context.moveTo(this.painters[i].dx, this.painters[i].dy);		
 
    			this.painters[i].dx -= this.painters[i].ax = (this.painters[i].ax + (this.painters[i].dx - this.mouseX) * this.painters[i].div) * this.painters[i].ease;
    			this.painters[i].dy -= this.painters[i].ay = (this.painters[i].ay + (this.painters[i].dy - this.mouseY) * this.painters[i].div) * this.painters[i].ease;
    			this.context.lineTo(this.painters[i].dx, this.painters[i].dy);
    			this.context.stroke();
    		}
    	}
    }
 
    function bargs( _fn )
    {
    	var n, args = [];
    	for( n = 1; n < arguments.length; n++ )
    		args.push( arguments[ n ] );
    	return function () { return _fn.apply( this, args ); };
    }
 
 
 
 
 
 
 
 
 
 
 
 
 
    var i, brush, BRUSHES = ["ribbon"],
    COLOR = [255,255,255 ], BACKGROUND_COLOR = [255, 255, 255],
    SCREEN_WIDTH = window.innerWidth,
    SCREEN_HEIGHT = window.innerHeight,
    container, foregroundColorSelector, backgroundColorSelector, menu, about,
    canvas, flattenCanvas, context,
    isForegroundColorSelectorVisible = false, isBackgroundColorSelectorVisible = false, isAboutVisible = false,
    isMenuMouseOver = false, shiftKeyIsDown = false, altKeyIsDown = false;
 
    
 
 
window.harmony = function init()
{
	var hash, palette;
	
	//document.body.style.backgroundColor = 'rgb(' + BACKGROUND_COLOR[0] + ', ' + BACKGROUND_COLOR[1] + ', ' + BACKGROUND_COLOR[2] + ')';
 
	container = document.createElement('div');
	document.body.appendChild(container);
	
	canvas = document.createElement("canvas");
	canvas.width = SCREEN_WIDTH;
	canvas.height = SCREEN_HEIGHT;
//	canvas.style.cursor = 'crosshair';
	container.appendChild(canvas);
	
	if (!canvas.getContext) return;
	
	context = canvas.getContext("2d");
	
	flattenCanvas = document.createElement("canvas");
	flattenCanvas.width = SCREEN_WIDTH;
	flattenCanvas.height = SCREEN_HEIGHT;
 
	
 
 
	
 
	if (!brush)
	{
		brush = new ribbon(context);
	}
	
 
	window.addEventListener('mousemove', onWindowMouseMove, false);
	window.addEventListener('resize', onWindowResize, false);
	window.addEventListener('keydown', onDocumentKeyDown, false);
	window.addEventListener('keyup', onDocumentKeyUp, false);
	
	document.addEventListener('mouseout', onCanvasMouseUp, false);
	
	canvas.addEventListener('mousemove', onCanvasMouseMove, false);
	canvas.addEventListener('touchstart', onCanvasTouchStart, false);
	
	onWindowResize(null);
}
 
 
// WINDOW
 
function onWindowMouseMove( event )
{
	mouseX = event.clientX;
	mouseY = event.clientY;
}
 
function onWindowResize()
{
	SCREEN_WIDTH = window.innerWidth;
	SCREEN_HEIGHT = window.innerHeight;
	
	
}
 
 
// DOCUMENT
 
function onDocumentMouseDown( event )
{
	if (!isMenuMouseOver)
		event.preventDefault();
}
 
function onDocumentKeyDown( event )
{
	if (shiftKeyIsDown)
		return;
		
	switch(event.keyCode)
	{
 
		case 18: // Alt
			altKeyIsDown = true;
			break;
	}
}
 
function onDocumentKeyUp( event )
{
	switch(event.keyCode)
	{
		case 16: // Shift
			shiftKeyIsDown = false;
			foregroundColorSelector.container.style.visibility = 'hidden';			
			break;
		case 18: // Alt
			altKeyIsDown = false;
			break;	
	}
}
 
// COLOR SELECTORS
 
function setForegroundColor( x, y )
{
	foregroundColorSelector.update( x, y );
	COLOR = foregroundColorSelector.getColor();
	menu.setForegroundColor( COLOR );	
}
 
function onForegroundColorSelectorMouseDown( event )
{
	window.addEventListener('mousemove', onForegroundColorSelectorMouseMove, false);
	window.addEventListener('mouseup', onForegroundColorSelectorMouseUp, false);
	
	setForegroundColor( event.clientX - foregroundColorSelector.container.offsetLeft, event.clientY - foregroundColorSelector.container.offsetTop );	
}
 
function onForegroundColorSelectorMouseMove( event )
{
	setForegroundColor( event.clientX - foregroundColorSelector.container.offsetLeft, event.clientY - foregroundColorSelector.container.offsetTop );
}
 
function onForegroundColorSelectorMouseUp( event )
{
	window.removeEventListener('mousemove', onForegroundColorSelectorMouseMove, false);
	window.removeEventListener('mouseup', onForegroundColorSelectorMouseUp, false);
 
	setForegroundColor( event.clientX - foregroundColorSelector.container.offsetLeft, event.clientY - foregroundColorSelector.container.offsetTop );
}
 
function onForegroundColorSelectorTouchStart( event )
{
	if(event.touches.length == 1)
	{
		event.preventDefault();
		
		setForegroundColor( event.touches[0].pageX - foregroundColorSelector.container.offsetLeft, event.touches[0].pageY - foregroundColorSelector.container.offsetTop );
		
		window.addEventListener('touchmove', onForegroundColorSelectorTouchMove, false);
		window.addEventListener('touchend', onForegroundColorSelectorTouchEnd, false);
	}
}
 
function onForegroundColorSelectorTouchMove( event )
{
	if(event.touches.length == 1)
	{
		event.preventDefault();
		
		setForegroundColor( event.touches[0].pageX - foregroundColorSelector.container.offsetLeft, event.touches[0].pageY - foregroundColorSelector.container.offsetTop );
	}
}
 
function onForegroundColorSelectorTouchEnd( event )
{
	if(event.touches.length == 0)
	{
		event.preventDefault();
		
		window.removeEventListener('touchmove', onForegroundColorSelectorTouchMove, false);
		window.removeEventListener('touchend', onForegroundColorSelectorTouchEnd, false);
	}	
}
 
 
//
 
function setBackgroundColor( x, y )
{
	backgroundColorSelector.update( x, y );
	BACKGROUND_COLOR = backgroundColorSelector.getColor();
	menu.setBackgroundColor( BACKGROUND_COLOR );
	
	document.body.style.backgroundColor = 'rgb(' + BACKGROUND_COLOR[0] + ', ' + BACKGROUND_COLOR[1] + ', ' + BACKGROUND_COLOR[2] + ')';	
}
 
function onBackgroundColorSelectorMouseDown( event )
{
	window.addEventListener('mousemove', onBackgroundColorSelectorMouseMove, false);
	window.addEventListener('mouseup', onBackgroundColorSelectorMouseUp, false);
}
 
function onBackgroundColorSelectorMouseMove( event )
{
	setBackgroundColor( event.clientX - backgroundColorSelector.container.offsetLeft, event.clientY - backgroundColorSelector.container.offsetTop );
}
 
function onBackgroundColorSelectorMouseUp( event )
{
	window.removeEventListener('mousemove', onBackgroundColorSelectorMouseMove, false);
	window.removeEventListener('mouseup', onBackgroundColorSelectorMouseUp, false);
	
	setBackgroundColor( event.clientX - backgroundColorSelector.container.offsetLeft, event.clientY - backgroundColorSelector.container.offsetTop );
}
 
 
function onBackgroundColorSelectorTouchStart( event )
{
	if(event.touches.length == 1)
	{
		event.preventDefault();
		
		setBackgroundColor( event.touches[0].pageX - backgroundColorSelector.container.offsetLeft, event.touches[0].pageY - backgroundColorSelector.container.offsetTop );
		
		window.addEventListener('touchmove', onBackgroundColorSelectorTouchMove, false);
		window.addEventListener('touchend', onBackgroundColorSelectorTouchEnd, false);
	}
}
 
function onBackgroundColorSelectorTouchMove( event )
{
	if(event.touches.length == 1)
	{
		event.preventDefault();
		
		setBackgroundColor( event.touches[0].pageX - backgroundColorSelector.container.offsetLeft, event.touches[0].pageY - backgroundColorSelector.container.offsetTop );
	}
}
 
function onBackgroundColorSelectorTouchEnd( event )
{
	if(event.touches.length == 0)
	{
		event.preventDefault();
		
		window.removeEventListener('touchmove', onBackgroundColorSelectorTouchMove, false);
		window.removeEventListener('touchend', onBackgroundColorSelectorTouchEnd, false);
	}	
}
 
 
// MENU
 
function onMenuForegroundColor()
{
	cleanPopUps();
	
	foregroundColorSelector.show();
	foregroundColorSelector.container.style.left = ((SCREEN_WIDTH - foregroundColorSelector.container.offsetWidth) / 2) + 'px';
	foregroundColorSelector.container.style.top = ((SCREEN_HEIGHT - foregroundColorSelector.container.offsetHeight) / 2) + 'px';
 
	isForegroundColorSelectorVisible = true;
}
 
function onMenuBackgroundColor()
{
	cleanPopUps();
 
	backgroundColorSelector.show();
	backgroundColorSelector.container.style.left = ((SCREEN_WIDTH - backgroundColorSelector.container.offsetWidth) / 2) + 'px';
	backgroundColorSelector.container.style.top = ((SCREEN_HEIGHT - backgroundColorSelector.container.offsetHeight) / 2) + 'px';
 
	isBackgroundColorSelectorVisible = true;
}
 
function onMenuSelectorChange()
{
	if (BRUSHES[menu.selector.selectedIndex] == "")
		return;
 
	brush.destroy();
	brush = eval("new " + BRUSHES[menu.selector.selectedIndex] + "(context)");
 
	window.location.hash = BRUSHES[menu.selector.selectedIndex];
}
 
function onMenuMouseOver()
{
	isMenuMouseOver = true;
}
 
function onMenuMouseOut()
{
	isMenuMouseOver = false;
}
 
function onMenuSave()
{
	var context = flattenCanvas.getContext("2d");
	
	context.fillStyle = 'rgb(' + BACKGROUND_COLOR[0] + ', ' + BACKGROUND_COLOR[1] + ', ' + BACKGROUND_COLOR[2] + ')';
	context.fillRect(0, 0, canvas.width, canvas.height);
	context.drawImage(canvas, 0, 0);
 
	window.open(flattenCanvas.toDataURL("image/png"),'mywindow');
}
 
function onMenuClear()
{
	context.clearRect(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
 
	brush.destroy();
	brush = eval("new " + BRUSHES[menu.selector.selectedIndex] + "(context)");
}
 
function onMenuAbout()
{
	cleanPopUps();
 
	isAboutVisible = true;
	about.show();
}
 
 
// CANVAS
 
 
 
function onCanvasMouseMove( event )
{
	if (!brush.isStroking) {
	    brush.strokeStart( event.clientX, event.clientY );
	    brush.isStroking = true;
	    
	    window.Rcgnzr = new DollarRecognizer();
 
	    return;
	}
    
    var pts = onCanvasMouseMove.pts, results,
          x = event.clientX, y = event.clientY;
    
    if (onCanvasMouseMove.lastMove && (event.timeStamp - onCanvasMouseMove.lastMove) > 300){
      //  console.log('omg been a while',+event.timeStamp);
        
        
        if (pts && pts.length){
            results = Rcgnzr.Recognize(pts);
           // console.log('results',results);
            if (results.Name == 'star' && results.Score >= .6) window.starryEgg && starryEgg();
  
           // console.log('starting new guy')
            onCanvasMouseMove.pts = [];
        } else {
            
           // console.log('starting new guy')
            onCanvasMouseMove.pts = [];
        }
    }
 
    onCanvasMouseMove.lastMove = +event.timeStamp;
 
 
    
    pts && (pts[pts.length] = new Point(x, y));
    
	brush.stroke( x, y );
}
 
function onCanvasMouseUp()
{
	brush.strokeEnd();
	
	window.removeEventListener('mousemove', onCanvasMouseMove, false);	
	window.removeEventListener('mouseup', onCanvasMouseUp, false);
}
 
 
//
 
function onCanvasTouchStart( event )
{
	cleanPopUps();		
 
	if(event.touches.length == 1)
	{
		event.preventDefault();
		
		brush.strokeStart( event.touches[0].pageX, event.touches[0].pageY );
		
		window.addEventListener('touchmove', onCanvasTouchMove, false);
		window.addEventListener('touchend', onCanvasTouchEnd, false);
	}
}
 
function onCanvasTouchMove( event )
{
	if(event.touches.length == 1)
	{
		event.preventDefault();
		brush.stroke( event.touches[0].pageX, event.touches[0].pageY );
	}
}
 
function onCanvasTouchEnd( event )
{
	if(event.touches.length == 0)
	{
		event.preventDefault();
		
		brush.strokeEnd();
 
		window.removeEventListener('touchmove', onCanvasTouchMove, false);
		window.removeEventListener('touchend', onCanvasTouchEnd, false);
	}
}
 
//
 
function cleanPopUps()
{
	if (isForegroundColorSelectorVisible)
	{
		foregroundColorSelector.hide();
		isForegroundColorSelectorVisible = false;
	}
		
	if (isBackgroundColorSelectorVisible)
	{
		backgroundColorSelector.hide();
		isBackgroundColorSelectorVisible = false;
	}
	
	if (isAboutVisible)
	{
		about.hide();
		isAboutVisible = false;
	}
}
 
 
 
 
 
 
 
 
})(this,this.document);
 
 
 
 
function starryEgg(){
    
    if (document.getElementById('erasure')) return;
   
    var mynote = document.querySelector('div tt');
    if (mynote){
    mynote.innerHTML += "<br>thx <a href='http://mrdoob.com/'>mr. doob</a> for making <a href='http://mrdoob.com/120/Harmony_HTML5'>harmony</a>."
    mynote.className += 'louder';
    }
    
}