Contents

CGRectIsNull(_:)

Returns whether the rectangle is equal to the null rectangle.

Declaration

func CGRectIsNull(_ rect: CGRect) -> Bool

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 Rectangle Characteristics