#myCanvas
设置变换
1,0,0,1,-200,0|1,0,0,1,-100,0|1,0,0,1,-50,0|1,0,0,1,-20,0|1,0,0,1,-10,0|1,0,0,1,0,0|1,0,0,1,10,0|1,0,0,1,20,0|1,0,0,1,50,0|1,0,0,1,100,0
ctx.setTransform(#val); ctx.fillStyle='lightblue'; ctx.fillRect(10,10,250,100); ctx.fillStyle='red'; ctx.font='30px Arial'; ctx.fillText('Transform', 60,80);