6.17  point%

A point% is used for certain drawing commands. It encapsulates two real numbers, x and y.

• (make-object point%) -> point% object

  Creates a point with 0 x and y values.

  
  

• (make-object point% x y) -> point% object
     x : real number
     y : real number

  Creates a point.

  
  

Methods
    get-x
    get-y
    set-x
    set-y