Rect::+=

Rect::+=
inline const Rect<T>& operator +=(const Point<T> & pt);
inline const Rect<T>& operator +=(T val);
Description

The operator += function offsets a rectangle positively (towards the bottom right-most corner). The following expression is used to determine the result:

   (x1, y1, x2, y2) = (x1 + [value, pt.x], y1 + [val, pt.y], x2 + [val, pt.x], y2 + [val, pt.y])
Parameters
Parameters 
Description 
const Point<T> & pt 
A point whose x coordinate is added to x1 and x2, and whose y coordinate is added to y1 and y2, in order to offset the rectangle towards the bottom right-most corner. 
T val 
A value that is added to the x1, y1, x2, and y2 components of the rectangle in order to offset the rectangle towards the bottom right-most corner. 
Return Value

A Rect reference to a new string whose x1, y1, x2, and y2 components are determined by offsetting its original values towards the bottom right-most corner.