Rect::-

inline const Rect<T> operator -() const;
inline const Rect<T> operator -(const Point<T> & pt) const;
inline const Rect<T> operator -(T val) const;

Description

The operator - function negates the rectangle by turning each of its components negative. The following expression is used to determine the result:

   (result.x1, result.y1, result.x2, result.y2) = (-r.x1, -r.y1, -r.x2, -r.y2)

Parameters

Parameters	Description
const Point<T> & pt	A point whose x coordinate is subtracted from x1 and x2, and whose y coordinate is subtracted from y1 and y2, in order to offset the rectangle towards the top left-most corner.
T val	A value that is subtracted from the x1, y1, x2, and y2 components of the rectangle in order to offset the rectangle towards the top left-most corner.
r	A rectangle whose x1, y1, x2, and y2 components are negated.

Return Value

A new Rect whose x1,y1, x2 and y2 components are determined by negating those of a passed rectangle.