在许多位置一次插入图块

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;;; ============================================================================
;;; CXBLKAT - Insert a block at every selected object
;;; Version 1.0.0
;;; CADXChange LISP tools - https://cadxchange.net/resources/lisp/cxblkat
;;; Tested in: AutoCAD (full version). Other programs that run AutoLISP may work but are not tested.
;;; Copyright (c) CADXChange. Free for personal and commercial use; do not resell or
;;; republish it as a collection. Terms: https://cadxchange.net/legal/lisp-terms
;;; ============================================================================

;; The point a block goes to for an object: the center of a circle, arc or ellipse, the point of a point,
;; block or text, the midpoint of a line.
(defun cx:blkat-point (ed / type)
  (setq type (cx:dxf 0 ed))
  (cond
    ((= type "LINE") (cx:mid (cx:dxf 10 ed) (cx:dxf 11 ed)))
    (T (cx:pt3 (cx:dxf 10 ed)))))

;; Insert the block BLOCK (scaled by SCALE) at every object in NAMES. Blocks go on the layer of the object;
;; at a line the block is turned to the direction of the line. ERASE = T erases the objects. Needs ATTREQ 0 and OSMODE 0.
;; Returns how many blocks were inserted.
(defun cx:blkat-run (names block scale erase / n ed rot)
  (setq n 0)
  (if (tblsearch "BLOCK" block)
    (foreach e names
      (setq ed  (entget e)
            rot (if (= (cx:dxf 0 ed) "LINE")
                  (* (/ (angle (cx:dxf 10 ed) (cx:dxf 11 ed)) pi) 180.0)
                  0.0))
      (command "_.-INSERT" block "_Scale" scale "_Rotate" rot (cx:blkat-point ed))
      (cx:upd (entlast) 8 (cx:dxf 8 ed))
      (if erase (entdel e))
      (setq n (1+ n))))
  n)

(defun c:CXBLKAT ( / *error* cx:sv ss block scale erase n)
  (setq *error* cx:err)
  (if (setq ss (cx:pick "\nSelect circles, arcs, points, texts, blocks or lines to put blocks at: "
                        '((0 . "CIRCLE,ARC,POINT,TEXT,MTEXT,INSERT,ELLIPSE,LINE"))))
    (progn
      (princ (strcat "\nBlocks in this drawing: " (cx:join (cx:block-names) ", ")))
      (setq block (cx:ask-str "Block to insert" "-"))
      (if (not (tblsearch "BLOCK" block))
        (princ (strcat "\nThere is no block named " block "."))
        (progn
          (setq scale (cx:ask-real "Scale" 1.0)
                erase (= (cx:ask-kw "Erase the selected objects" "Yes No" "No") "Yes"))
          (cx:start '(("CMDECHO" . 0) ("ATTREQ" . 0) ("ATTDIA" . 0) ("OSMODE" . 0)))
          (setq n (cx:blkat-run (cx:ss->list ss) block scale erase))
          (princ (strcat "\n" (itoa n) " block(s) inserted."))
          (cx:end)))))
  (princ))


;;; ---- Shared helpers (used by the command above; identical in every CADXChange tool) ----

(defun cx:dxf (code ed)
  (cdr (assoc code ed)))

(defun cx:mid (a b)
  (list (/ (+ (car a) (car b)) 2.0) (/ (+ (cadr a) (cadr b)) 2.0) (/ (+ (caddr a) (caddr b)) 2.0)))

;; A point with a Z value (2D points get 0).
(defun cx:pt3 (p)
  (list (car p) (cadr p) (if (caddr p) (caddr p) 0.0)))

;; Change one group of an entity: (cx:upd ename 8 "LAYER1"); the group is added when missing.
(defun cx:upd (ename code value / ed old)
  (setq ed (entget ename) old (assoc code ed))
  (entmod (if old (subst (cons code value) old ed) (append ed (list (cons code value)))))
  (entupd ename))

;; Close the undo step and put the system variables back.
(defun cx:end ()
  (foreach v cx:sv (setvar (car v) (cdr v)))
  (command "_.UNDO" "_End")
  (setq cx:sv nil)
  (princ))

;; Error handler: restores everything, stays quiet on Esc.
(defun cx:err (msg)
  (if (> (getvar "CMDACTIVE") 0) (command))
  (cx:end)
  (if (and msg (not (wcmatch (strcase msg) "*BREAK*,*CANCEL*,*EXIT*")))
    (princ (strcat "\nError: " msg)))
  (princ))

;; Use the objects already selected, or ask the user to select; FILTER is an ssget filter list or nil.
(defun cx:pick (msg filter / ss)
  (setq ss (if filter (ssget "_I" filter) (ssget "_I")))
  (if (null ss)
    (progn
      (princ msg)
      (setq ss (if filter (ssget filter) (ssget)))))
  ss)

(defun cx:join (lst delim / out)
  (setq out "")
  (foreach s lst
    (setq out (if (= out "") s (strcat out delim s))))
  (if lst out ""))

;; 1-based position of SUB in STR at or after START, or nil.
(defun cx:find (str sub start / n i r)
  (setq n (strlen sub) i start r nil)
  (if (> n 0)
    (while (and (not r) (<= i (1+ (- (strlen str) n))))
      (if (= (substr str i n) sub) (setq r i))
      (setq i (1+ i))))
  r)

;; The names of the block definitions that can be inserted (no anonymous or xref blocks).
(defun cx:block-names (/ r out)
  (setq r (tblnext "BLOCK" T))
  (while r
    (if (and (/= (substr (cx:dxf 2 r) 1 1) "*") (not (cx:find (cx:dxf 2 r) "|" 1)))
      (setq out (cons (cx:dxf 2 r) out)))
    (setq r (tblnext "BLOCK")))
  (reverse out))

;;; Helpers that draw small things: labels and markers. See helpers.lsp for the format.

;; Ask for a string (spaces allowed) with a default; "-" means an empty string.
(defun cx:ask-str (msg def / v)
  (setq v (getstring T (strcat "\n" msg " <" def ">: ")))
  (cond ((= v "") def) ((= v "-") "") (T v)))

;; Real X as text with at most PREC decimals and no trailing zeros ("2.50" -> "2.5", "3.00" -> "3").
(defun cx:num (x prec / s)
  (setq s (rtos x 2 prec))
  (if (wcmatch s "*.*")
    (progn
      (while (= (substr s (strlen s)) "0") (setq s (substr s 1 (1- (strlen s)))))
      (if (= (substr s (strlen s)) ".") (setq s (substr s 1 (1- (strlen s)))))))
  (if (or (= s "-0") (= s "")) "0" s))

(defun cx:ask-real (msg def / v)
  (setq v (getreal (strcat "\n" msg " <" (cx:num def 6) ">: ")))
  (if v v def))

;; Replace every OLD in STR by NEW (case sensitive).
(defun cx:replace (str old new / n out pos)
  (setq n (strlen old) out "" pos 1)
  (if (= n 0)
    str
    (progn
      (while (<= pos (1+ (- (strlen str) n)))
        (if (= (substr str pos n) old)
          (setq out (strcat out new) pos (+ pos n))
          (setq out (strcat out (substr str pos 1)) pos (1+ pos))))
      (strcat out (substr str pos)))))

;; Ask for one of the keywords in BITS ("Yes No"), default DEF; returns the keyword.
(defun cx:ask-kw (msg bits def / v)
  (initget 0 bits)
  (setq v (getkword (strcat "\n" msg " [" (cx:replace bits " " "/") "] <" def ">: ")))
  (if v v def))

;; Save the system variables in VARS ((name . value) ...), set them, and open one undo step.
;; The caller declares cx:sv as a local so the saved values live exactly as long as the command.
(defun cx:start (vars)
  (setq cx:sv (mapcar (function (lambda (v) (cons (car v) (getvar (car v))))) vars))
  (command "_.UNDO" "_Begin")
  (foreach v vars (setvar (car v) (cdr v)))
  (princ))

;; Selection set to a list of entity names.
(defun cx:ss->list (ss / i out)
  (setq i 0)
  (if ss
    (repeat (sslength ss)
      (setq out (cons (ssname ss i) out)
            i   (1+ i))))
  (reverse out))

(princ "\nCXBLKAT loaded. Type CXBLKAT to start.")
(princ)

更多命令：图块与属性

• CXATTFILL批量填写多个图块的同一个属性
• CXATTNUM给图块属性连续编号
• CXATTCOPY把一个图块的属性值复制给其他图块
• CXATTVIS批量显示或隐藏图块属性
• CXBLKCOUNT按名称统计图块数量
• CXBLKREPL用另一个图块替换所选图块
• CXBLKREN批量重命名图块
• CXBLKXP分解图块并保留属性文字
• CXBLKSEL按名称或属性值选择图块