Help modifying a modified divide lisp from Cadalyst website

Hi all:

I like using Lisps, but don't know how to write code for them. I like this particular lisp created by Mosad Elewa and posted on Cadalyst.com. When trying the lisp on a polyline, it did not work. Seems to only work on a "line". Here's the code:

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;;;CADALYST 02/07 Tip 2180: DIV.LSP Modify Divide © 2007 Mosad Elewa



	;DIV.LSP BY MOSAD H. ELEWA (1996)



	(defun C:DIV ()



	 



	(setq ent (entget (car (entsel "\nSelect object to divide"))))



	(setq etype (cdr (assoc 0 ent)))



	(if (eq etype "LINE")



	(progn



	(cond



	( (setq m (getint "\nNumber of segments"))



	(setq pt1 (cdr (assoc 10 ent)))



	(setq pt2 (cdr (assoc 11 ent)))



	(setq ang (angle pt1 pt2))



	(setq dist (distance pt1 pt2))



	(setq dd (/ dist m))



	(setq pt3 (polar pt1 ang dd))



	(setq ang2 (+ ang 1.5708))



	(setq pt4 (polar pt3 ang2 (/ dd 4)))



	(setq ds (distance pt1 pt3))



	(command "line" pt3 pt4 "")



	(setq pt5 (polar pt3 ang2 (/ dd ))



	(command "move" "l" "" pt4 pt5)



	(setq d 0)



	; (setvar "cmdecho" 0)



	(command



	"copy" "l" "" "m" pt1)



	(repeat (- m 2)



	(command



	(polar pt1 ang (setq d (+ d ds)))))



	(command "")))



	))



	(if (eq etype "ARC")



	(progn



	(setq n (getint "\Number of segments"))



	(setq ang (cdr (assoc 50 ent)))



	(setq ang2 (cdr (assoc 51 ent)))



	(setq ang3 (- ang2 ang))



	(setq ang4 (/ (* ang3 180.0) pi))



	(setq cp (cdr (assoc 10 ent)))



	(setq r (cdr (assoc 40 ent)))



	(setq pt1 (polar cp ang r))



	(setq pt2 (polar cp ang (/ r 4)))



	(setq pt3 (polar cp ang (/ r ))



	(command "line" cp pt2 "")



	(command "move" "l" "" pt3 pt1)



	(command "array" "l" "" "p" cp (+ n 1) ang4 "y")



	))



	(if (eq etype "CIRCLE")



	(progn



	(setq n (getint "\Number of segments"))



	(setq cp (cdr (assoc 10 ent)))



	(setq r (cdr (assoc 40 ent)))



	(setq pt1 (polar cp 0 r))



	(setq pt2 (polar cp 0 (/ r 4)))



	(setq pt3 (polar cp 0 (/ r ))



	(command "line" cp pt2 "")



	(command "move" "l" "" pt3 pt1)



	(command "array" "l" "" "p" cp n "360" "y")



	))



	(princ)



	)[/CODE]

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Try this code ....

(defun c:test (/ s n j sn d i l pt ang)
 (vl-load-com)
;;; Tharwat 02. Jan. 2013 ;;;
 (if (and (setq n (getint "\n Number of segments :"))
          (setq s (ssget '((0 . "*POLYLINE,LINE,CIRCLE,ELLIPSE,SPLINE,ARC"))))
     )
   (if (not (eq n 0))
     (repeat (setq j (sslength s))
       (setq sn (ssname s (setq j (1- j))))
       (setq d (/ (vlax-curve-getdistatparam sn (vlax-curve-getendparam sn)) n)
             i d
             l (/ d 10.)
       )
       (repeat n
         (setq pt (vlax-curve-getpointatdist sn i))
         (setq ang (angle '(0.0 0.0 0.0) (vlax-curve-getfirstderiv sn (vlax-curve-getparamatpoint sn pt))))
         (entmakex (list '(0 . "LINE")
                         (cons 10 (polar pt (+ ang (/ pi 2.)) l))
                         (cons 11 (polar pt (- ang (/ pi 2.)) l))
                   )
         )
         (setq i (+ d i))
       )
     )
     (alert "Number of segments must be bigger than ZERO !!")
   )
 )
 (princ)
)

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Thanks Tharwat. This lisp doesn't work for a heavy polyline (2D polyline). Can you write the code where it will work on any type of line?

Thanks Tharwat. This lisp doesn't work for a heavy polyline (2D polyline). Can you write the code where it will work on any type of line?

Codes updated to work on many kinds of entities .

Why not use the built-in DIVIDE command?

dughug,

Please edit your post to include Code Tags.

a little modification of Tharwat code can be helpful for light poles distribution according to rule: x/2 x x x/2

;;; Divide POLYLINEs,LINEs,CIRCLEs,ELLIPSEs,SPLINEs and ARCs according to light poles distribution purposes
;;; Modified by Igal Averbuh  2018 (added optilon  x/2 x x x/2 divide for lighting purposes)
;;; Created by ;;; Tharwat 02. Jan. 2013 ;;;
;;; Saved from: https://www.cadtutor.net/forum/topic/43505-help-modifying-a-modified-divide-lisp-from-cadalyst-website/

(defun c:AD (/ s n j sn d i l pt ang)
 (vl-load-com)

 (if (and (setq n (getint "\n Number of segments :"))
          (setq s (ssget '((0 . "*POLYLINE,LINE,CIRCLE,ELLIPSE,SPLINE,ARC"))))
     )
   (if (not (eq n 0))
     (repeat (setq j (sslength s))
       (setq sn (ssname s (setq j (1- j))))
       (setq d (/ (vlax-curve-getdistatparam sn (vlax-curve-getendparam sn)) n)
             i (* d 0.5)
             l (/ d 10.)
       )
       (repeat n
         (setq pt (vlax-curve-getpointatdist sn i))
         (setq ang (angle '(0.0 0.0 0.0) (vlax-curve-getfirstderiv sn (vlax-curve-getparamatpoint sn pt))))
         (entmakex (list '(0 . "LINE")
                         (cons 10 (polar pt (+ ang (/ pi 2.)) l))
                         (cons 11 (polar pt (- ang (/ pi 2.)) l))
                   )
         )
         (setq i (+ d i))
       )
     )
     (alert "Number of segments must be bigger than ZERO !!")
   )
 )
 (princ)
)
(c:ad)