get
Returns the visible region of the map.
Gets a projection of the viewing frustum for converting between screen coordinates and geo-latitude/longitude coordinates. The visible region includes the four corner points and the smallest bounding box that contains them.
If map padding is set, the visible region represents the logical (non-padded) viewport, excluding the padded areas where UI elements may be overlaying the map.
The bounding box crosses the antimeridian (southwest longitude greater than northeast longitude) when the view does, and spans all longitudes when the view is at least as wide as the world.
Return
A VisibleRegion containing the four corners and bounding box