摘要： <canvas id="c"></canvas><script>f=Math;d=document;_=d.body;_.style.background="#000";e=_.children[0];e.width=w=innerWidth-10;e.height=h=innerHeight-25;g=e.getContext("2d");t=w/h;with(g){globalCompositeOperation="lighter";scale(w/2/t,h/2);tran 阅读全文