Instance Property

isNull

Returns whether the rectangle is equal to the null rectangle.

Declaration

var isNull: Bool { get }

Parameters

rect

The rectangle to examine.

Return Value

true if the specified rectangle is null; otherwise, false.

Discussion

A null rectangle is the equivalent of an empty set. For example, the result of intersecting two disjoint rectangles is a null rectangle. A null rectangle cannot be drawn and interacts with other rectangles in special ways.

See Also

Checking Characteristics

func intersects(CGRect) -> Bool

Returns whether two rectangles intersect.

func contains(CGPoint) -> Bool

Returns whether a rectangle contains a specified point.

func contains(CGRect) -> Bool

Returns whether the first rectangle contains the second rectangle.

var isEmpty: Bool

Returns whether a rectangle has zero width or height, or is a null rectangle.

var isInfinite: Bool

Returns whether a rectangle is infinite.