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If your application needs to convert angular values from radians to degrees, you can use the angtos function, which returns a string, and then convert that string into a floating point value with atof.
(setq pt1 '(1 1) pt2 '(1 2))
(setq rad (angle pt1 pt2))
(setq deg (atof (angtos rad 0 2))) returns 90.0
However, a more efficient method might be to include a Radian->Degrees function in your application. The following code shows this:
; Convert value in radians to degrees
(defun Radian->Degrees (nbrOfRadians)
(* 180.0 (/ nbrOfRadians pi))
)
After this function is defined, you can use the Radian->Degrees function throughout your application, as in
(setq degrees (Radian->Degrees rad)) returns 90.0
You may also need to convert from degrees to radians. The following code shows this:
; Convert value in degrees to radians
(defun Degrees->Radians (numberOfDegrees)
(* pi (/ numberOfDegrees 180.0))
) ;_ end of defun