画布缩放都不起作用
画布用css:transform:scale(0.5)不缩小,用CanvasContext.transform(number scaleX, number scaleY, number skewX, number skewY, number translateX, number translateY)也不缩小
画布用css:transform:scale(0.5)不缩小,用CanvasContext.transform(number scaleX, number scaleY, number skewX, number skewY, number translateX, number translateY)也不缩小