#myCanvas
setTransform
1,0,0,0.1,0,0|1,0,0,0.5,0,0|1,0,0,0.8,0,0|1,0,0,0.9,0,0|1,0,0,1,0,0|1,0,0,1.1,0,0|1,0,0,1.2,0,0|1,0,0,1.5,0,0|1,0,0,2,0,0
ctx.setTransform(#val); ctx.fillStyle='lightblue'; ctx.fillRect(10,10,250,100); ctx.fillStyle='red'; ctx.font='30px Arial'; ctx.fillText('变换', 60,80);