Integer Rectangles ( IRect )

Definition

An instance ir of type IRect is a rectangle (left, right, top, bottom) in a grid coordinate system. That is left < = right and bottom < = top.

#include < AGD/IRect.h >

Creation

IRect	ir	creates an instance ir of type IRect initialized to the rectangle (0, 0, 0, 0).
IRect	ir(int xmin, int xmax, int ymin, int ymax)
		creates an instance ir of type IRect initialized to the rectangle (xmin, xmax, ymin, ymax).
IRect	ir(const IPoint& ll, const IPoint& ur)
		creates an instance ir of type IRect initialized to the rectangle with lower left corner ll and upper right corner ur.

Operations

IPoint	ir.lower_left()	returns the lower left corner of ir.
IPoint	ir.upper_right()	returns the upper right corner of ir.
const int&	ir.left()	returns the x-coordinate of the lower left corner of ir.
const int&	ir.right()	returns the x-coordinate of the upper right corner of ir.
const int&	ir.top()	returns the y-coordinate of the upper right corner of ir.
const int&	ir.bottom()	returns the y-coordinate of the lower left corner of ir.
int	ir.width()	returns the width (= right - left) of ir.
int	ir.height()	returns the height (= top - bottom) of ir.
int	ir.area()	returns the area (= width()*height()) of ir.