angle

(angle point_list1 point_list2)

The angle function returns the angle between the axis specified by two points. The function ignores Z coordinates different to zero of point_list1 and point_list2.

The angle is measured counterclockwise from the x-axis of the current custom coordinate system (CCS).

The function returns the value of the angle in radians.

Examples

: (angle '(10.0 5.0) '(20.0 7.0))

0.1974

: (angle '(2.0 3.33) '(4.6 5.7))

0.7392