Topic: Angle between UCS & WCS

[csgoh]

How can one find the angle between a local UCS  and WCS? Is there a system variable for this angle?
Thanks.

[Jürg Menzi]

How can one find the angle between a local UCS  and WCS? Is there a system variable for this angle?

(defun MeGetUcsAngle ()
 (angle
  (trans '(0.0 0.0 0.0) 1 0) 
  (trans '(1.0 0.0 0.0) 1 0)
 )
)

(defun MeTransAng2Ucs (Ang / OriPnt)
 (setq OriPnt '(0.0 0.0 0.0))
 (angle
  (trans OriPnt 0 1)
  (trans (polar OriPnt Ang 1.0) 0 1)
 )
)

[csgoh]

Thanks.

[David Bethel]

How about UCSXDIR & UCSYDIR. 

I don't think that you can state the angle between coordinate systems in a single value without specifing which axis you need to compare.  Angles are after all 2 dimensional values.  -David