demo: http://output.jsbin.com/davixatona
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width"> <title>Paper</title> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script> <script src="https://code.createjs.com/easeljs-0.8.2.min.js"></script> <script src="https://code.createjs.com/tweenjs-0.6.2.min.js"></script> </head> <style type="text/css"> body { background-color: aliceblue; } #js_canvas { border: 1px solid red; } </style> <body> <canvas id="js_canvas" width="900" height="506"></canvas> </body> </html> <script type="text/javascript"> var js_paper = [ 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]; jQuery(function($){ var $canvas = $('#js_canvas'); var paperArr = []; var stage; $canvas[0].width = 900; $canvas[0].height = 506; function init(){ for(var i = 0; i < js_paper.length; i++){ createBitmaps('data:image/jpg;base64,' + js_paper[i]); } stage = new createjs.Stage($canvas[0]); createjs.MotionGuidePlugin.install(createjs.Tween); createjs.Ticker.setFPS(60); createjs.Ticker.addEventListener("tick", stage); setInterval(function() { drawPaper2(stage, paperArr); }, 200); } function createBitmaps(url){ var bitmap = new createjs.Bitmap(url); bitmap.x = -100; bitmap.y = -100; paperArr.push(bitmap); } function drawPaper(stage, arr){ var l= 20, r= $canvas[0].width - 20; var index = Math.floor(Math.random() * arr.length); var f = arr[index].clone(); //f.alpha = 0.8; var ran = (Math.random()>0.5?-1:1); var startX = l + Math.random() * (r - l); var x = [startX + Math.random() * 30 * (Math.random()>0.5?1:-1), startX + Math.random() * 30 * (Math.random()>0.5?1:-1), startX]; var endY = 1800; var y = [endY*0.3+Math.random() * 20 * (Math.random()>0.5?1:-1), endY*0.6+Math.random() * 20 * (Math.random()>0.5?1:-1), endY]; stage.addChild(f); createjs.Tween.get(f) .to({ guide:{ path:[startX,0, x[0],y[0],x[1],y[1], x[2],y[2],startX,y[2]]}, rotation: (500 + Math.random() * 500)*ran, alpha: 0}, 30000 + Math.random() * 3000, createjs.Ease.linear) .call(function(){ stage.removeChild(f); }); } function drawPaper2(stage, arr){ var l= 20, r= $canvas[0].width - 20; var index = Math.floor(Math.random() * arr.length); var f = arr[index].clone(); var ran = (Math.random()>0.5?-1:1); var startX = l + Math.random() * (r - l); var x = [startX + Math.random() * 30 * (Math.random()>0.5?1:-1), startX + Math.random() * 30 * (Math.random()>0.5?1:-1), startX]; var endY = 500; var y = [endY*0.3+Math.random() * 20 * (Math.random()>0.5?1:-1), endY*0.6+Math.random() * 20 * (Math.random()>0.5?1:-1), endY]; stage.addChild(f); createjs.Tween.get(f) .to({ guide:{ path:[startX,0, x[0],y[0],x[1],y[1], x[2],y[2],startX,y[2]]}, rotation: (500 + Math.random() * 500)*ran, alpha:0}, 10000 + Math.random() * 3000, createjs.Ease.linear) .wait(100) //.to({alpha:0}, 400) .call(function(){ stage.removeChild(f); }); } init(); }); </script>
demo: http://output.jsbin.com/davixatona