insetBy(dx:dy:)
Returns the specified rectangle with an inset by the specified amounts.
Declaration
func insetBy(dx: Double, dy: Double) -> MKMapRectParameters
- dx:
The amount (in map points) to subtract from both sides along the x-axis.
- dy:
The amount (in map points) to subtract from both sides along the x-axis.
Return Value
The inset rectangle. If the original rectangle was null, that rectangle is returned instead.