高德地图点 转 百度地图的点
var coordinate = CLLocationCoordinate2D()
coordinate.latitude = Double(lat)!
coordinate.longitude = Double(lon)!
let gcj02Coord = coordinate
let bd09Coord = BMKCoordTrans(gcj02Coord, BMK_COORD_TYPE.COORDTYPE_COMMON, BMK_COORD_TYPE.COORDTYPE_BD09LL)
let pointCoor = BMKMapPointForCoordinate(bd09Coord)