百度地图判断点是否在屏幕上

Point pt= mBaiduMap.getMapStatus().targetScreen;

Point point= mBaiduMap.getProjection().toScreenLocation(line.get(temp -1).getPoint());

if(point.x <0|| point.x > pt.x*2|| point.y <0|| point.y > pt.y*2)

{

、//在屏幕以外了

}