Function
rectangle-union left-1 top-1 right-1 bottom-1 left-2 top-2 right-2
bottom-2 => left top right bottom
A real number
A real number
A real number
A real number
A real number
A real number
A real number
A real number
A real number
A real number
A real number
A real number
rectangle-union function returns four values: the left, top, right and bottom of the union of the two rectangles specified in the arguments. The values input for the two rectangles are ordered by this function before it uses them. ordered-rectangle-union