canvas演示
The canvas element is not supported!
还原
路径绘制
lineTo(100,100)
arcTo(30,80,100,100,60)
arc(50,50,40,0,2*Math.PI,false)
bezierCurveTo(0,50,100,50,100,0)
quadraticCurveTo(50,50,0,100)
rect(20,20,50,50)