matrix.mapRect(rectF)到底是做什么用的？也沒(méi)說(shuō)啊
matrix.mapRect(rectF)到底是做什么用的？也沒(méi)說(shuō)啊
慕妹4463934
2016-04-08
1 回答
舉報(bào)
0/150
提交
取消
2016-04-13
Apply this matrix to the rectangle, and write the transformed rectangle
back into it. This is accomplished by transforming the 4 corners of rect,
and then setting it to the bounds of those points
根據(jù)寬高拿到在view在parent左上右下四個(gè)點(diǎn)的矩形范圍