;;连接2条3dpolyline;;coord为LJ的子程序
(defun coord(en / ed)
(setq ee (entsel "\n请选择要连接的线:"))
(setq en (car ee))
(setq ed (enTGET en))
(print ed)
(setq la (cdr (assoc 8 ed)))
(setq pp (cdr (assoc 0 ed)))
(if (/= pp "LINE")
(progn 
(setq la (cdr (assoc 8 ed)))
(setq c38 (assoc 38 ed))
(if (eq c38 nil)
(progn
(setq en1 (entnext en))
(setq ed1 (entget en1))
(setq pp (cdr (assoc 0 ed1)))

(setq pt1 (assoc 10 ed1))
(if (/= pt1 nil)
(progn
(setq pt (cdr pt1))
))
(setq lt (list pt))
(while (/= pp "SEQEND")
 (progn
    (setq en1 (entnext en1))
	(setq ed1 (entget en1))
    (setq pp (cdr (assoc 0 ed1)))
    (setq pt1 (assoc 10 ed1))
	(if (/= pt1 nil)
	(progn
	 (setq pt (cdr pt1))
	))
    (setq lt (cons pt lt))
 )
)
(setq lt (cdr lt))
); not lwpolyline
(progn
  (print "aaa")
  (setq ev38 (cdr c38))
  (setq len (length ed))
  (setq len (- len 3))
  (setq j 0)
  (setq c10 (car (nth j ed)))
  (while (/= c10 10)
  (progn 
  (setq j (+ 1 j))
  (setq c10 (car (nth j ed)))
  ))
  (setq lt (list (list 0 0 0)))
  (while (< j len)
  (progn
    (setq lpt1 (cdr (nth j ed)))
    (setq lptx (nth 0 lpt1))
    (setq lpty (nth 1 lpt1))
    (setq lpt (list lptx lpty ev38))
    (setq lt (cons lpt lt))
    (setq j (+ j 4))
  )) 
(setq lt (reverse lt))
(setq lt (cdr lt))
)); is lwpolyline

) ; not line
(progn

 (setq lip1 (cdr (assoc 10 ed)))
 (setq lt (list lip1))
(setq lip2 (cdr (assoc 11 ed)))
(setq lt (cons lip2 lt))
))  ; line

(setq pot (cadr ee))
(setq edd ed)
(setq lla la)
(setq e en)
(setq lt lt)

;(entdel en)
)
连接2条3dpolyline，LJ为主程序;;coord为LJ的子程序
(defun c:y()
(setq lt1 (coord en))
(setq e1 e)
(setq la1 lla)
(setq et1 edd)
(setq pot1 pot)
(setq lt1 (reverse lt1))
(setq color1 (cdr c66))
;(setq c62 (assoc 62 ed))
;(setq cc62 (cons 62 3))
;(setq color1 (cdr c62))
;(setq ed (subst cc62 c62 ed))
;(entmod ed)
(command "change" e1 "" "P" "c" "3" "")
;_______________
(setq pss1 (car lt1))
(setq ps1 (list (nth 0 pss1) (nth 1 pss1)))
(setq pee1 (last lt1))
(setq pe1 (list (nth 0 pee1) (nth 1 pee1)))
(setq pot1 (list (nth 0 pot1) (nth 1 pot1)))
(setq ds1 (distance ps1 pot1))
(setq de1 (distance pe1 pot1))
(if (> ds1 de1)
(progn
  (setq lt1 lt1)
 )
 (progn
   (setq lt1 (reverse lt1))
 ))
;________________
(setq lt2 (coord en))
(setq e2 e)
(setq la2 lla)
(setq et2 edd)
(setq pot2 pot)
(setq lt2 (reverse lt2))
(command "change" e2 "" "p" "c" 3 "")
;_________________
(setq pss2 (car lt2))
(setq ps2 (list (nth 0 pss2) (nth 1 pss2)))
(setq pee2 (last lt2))
(setq pe2 (list (nth 0 pee2) (nth 1 pee2)))
(setq pot2 (list (nth 0 pot2) (nth 1 pot2)))
(setq ds2 (distance ps2 pot2))
(setq de2 (distance pe2 pot2))
(if (< ds2 de2)
(progn
  (setq lt2 lt2)
 )
 (progn
   (setq lt2 (reverse lt2))
 ))
;_________________
(if (= la1 la2)
(progn
(setq lt (append lt1 lt2))
(setvar "clayer" la1)
(setq i 0)
(setq len (length lt))
(if (NOT (EQ e1 e2))
(progn
   (command "3dpoly")
   (while (< i len)
   (progn
      (setq pt (nth i lt))
      (command pt)
      (setq i (+ 1 i))
   ))
   (command "")
   (entdel e1)
   (entdel e2)
)
(progn
   (prompt "\nSORRY! 你选择了同一条线!!!!")
   (print)
))
)
(progn
   (prompt "\nSORRY! 你选择的不是同一层的线!!!!")
   (PRINT)
))
;(command "change" "l" "" "p" "c" color1 "")
)