A.左上?為坐標(biāo)原點(diǎn)(0,0),右下?為(Screen.width,Screen.height)
B.右上?為坐標(biāo)原點(diǎn)(0,0),左下?為(Screen.width,Screen.height)
C.左下?為坐標(biāo)原點(diǎn)(0,0),右上?為(Screen.width,Screen.height)
D.右下?為坐標(biāo)原點(diǎn)(0,0),左上?為(Screen.width,Screen.height)