CAD lisp 程序，选择所有类型多段线，输出其上点的x,y,z坐标到txt

好的，以下是一个选择所有类型的多段线并输出其上点的x,y,z坐标到txt文件的Lisp程序：

(defun c:outputpoints ()
  (setq ss (ssget "_X" '((0 . "LWPOLYLINE") (0 . "POLYLINE"))))
  (setq cnt 0)
  (setq ptstr "")
  (while (< cnt (sslength ss))
    (setq ent (ssname ss cnt))
    (setq cnt (1+ cnt))
    (setq vertices (vlax-invoke-method ent 'vertices))
    (setq cnt2 0)
    (while (< cnt2 (vlax-get-property vertices 'count))
      (setq pt (vlax-get-property (vlax-invoke-method vertices 'item cnt2) 'coordinates))
      (setq cnt2 (1+ cnt2))
      (setq ptstr (strcat ptstr (rtos (car pt) 2 6) "," (rtos (cadr pt) 2 6) "," (rtos (caddr pt) 2 6) "\n"))
    )
  )
  (setq filename (getfiled "Save" "" "output.txt" 0))
  (setq file (open filename "w"))
  (write-line ptstr file)
  (close file)
  (princ "Points output to file: " filename)
)

您可以将上述代码复制到Lisp编辑器中，然后在AutoCAD中输入"APPLOAD"命令，加载Lisp文件，最后输入"OUTPUTPOINTS"命令即可选择所有类型的多段线并输出其上点的x,y,z坐标到txt文件中。程序会提示您选择存储输出文件的路径和文件名。