point% : class?

superclass: object%

A point% is used for certain drawing commands. It encapsulates two real numbers.

(make-object point%) → (is-a?/c point%)

(make-object point% x y) → (is-a?/c point%)

x : real?

y : real?

Creates a point. If x and y are not supplied, they are set to 0.

(send a-point get-x) → real?

Gets the point x-value.

(send a-point get-y) → real?

Gets the point y-value.

(send a-point set-x x) → void?

x : real?

Sets the point x-value.

(send a-point set-y y) → void?

y : real?

Sets the point y-value.