Android百度地图怎样获取圆的外切矩形

Question

百度地图知道中心点和半径，怎样获取外切矩形

Answer 1

Suppose the coordinates of the center point are (x, y) and the radius r, then the upper left corner of the circumscribed rectangle (x-r, y-r), the width and height are both 2r. I don't know if what is needed is map coordinates or coordinates mapped to the screen. If you need to mark, just press this to draw a rectangular frame.