angle

and

A Functions

angtof

 

AutoLISP Reference Guide > AutoLISP Functions > A Functions > 

angle

Returns an angle in radians of a line defined by two endpoints

(angle pt1 pt2) 

Arguments

pt1

An endpoint.

pt2

An endpoint.

Return Values

An angle, in radians.

The angle is measured from the X axis of the current construction plane, in radians, with angles increasing in the counterclockwise direction. If 3D points are supplied, they are projected onto the current construction plane.

Examples

Command: (angle '(1.0 1.0) '(1.0 4.0))

1.5708

Command: (angle '(5.0 1.33) '(2.4 1.33))

3.14159