How to solve the problem of connecting two non-intersecting or non-coplanar line segments in CAD

The first step is to use Notepad to save the following content as z0.lsp file

The second step, click Tools-AUTOLISP-Load-z0.lsp file

The third step, enter z0 on the command line, press Enter, select ALL, press Enter, and all non-coplanar lines will be reset to zero.

The following is the content of the notepad——

(defun C:Z0 (/SS1)

(setvar "cmdecho" 0)

(if (setq SS1 (ssget))

(progn

(command ＂.undo＂ ＂be＂)

(princ "\nProcessing graphics data, please wait...")

(terpri)

(command ＂.ucs＂ ＂w＂)

(command ＂.move＂ SS1 ＂＂ '(0 0 1e99) ＂＂ ＂.move＂ ＂p＂ ＂＂ '(0 0 -1e99) ＂＂")

(princ "\nOK, all Z coordinate values ​​of the selected primitive have been reset to zero.")

(command ＂.undo＂ ＂e＂)

);end progn

);end (if (/= SS1 nil)

(princ)

);end (defun C:Z=0 ( / SS1)

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