用下面的這個涵數吧.
Returns the UCS 3D point at a specified angle and distance from a point
(polar pt ang dist)
Arguments
pt
A 2D or 3D point.
ang
An angle expressed in radians relative to the world X axis. Angles increase in the counterclockwise direction, independent of the current construction plane.
dist
Distance from the specified pt.
Return Values
A 2D or 3D point, depending on the type of point specified by pt.
Examples
Supplying a 3D point to polar:
Command: (polar '(1 1 3.5) 0.785398 1.414214)
(2.0 2.0 3.5)
Supplying a 2D point to polar:
Command: (polar '(1 1) 0.785398 1.414214)
(2.0 2.0) |