Autolispĵ


1.õдϰ
    ֪LispһֱṹԣűɶԳ֣ڵʱΪ©һŴۣԣһõıϰѧLispġ
    ѡһϺõı༭һʹVisual Lisp༭Lisplinkרñ༭༭ԶԺͻʾ
    ưLispDCLרиʽдԳСʽʱ﷨󣬲ڵǲҴ
    ʹԶ庯ʵעͣڽϴаʹԶ庯ʹó

2.ѭתƵʹ
    ڸ߼һơgotoʵתƣAutoLispûתƵĺǿʹԶ庯ʵתƣifcondʵתơ
    ҪʵһʱѭĹܣһʹwhileʱҪжϵϸʱʹwhileʵֻʹó򲻹ࡣʱǿʹáתơҪʵֵĹΪӣʹǡڳ⡰תơ
    һΪһδڲͬظʹʱǲŻʹӺ壬ʵúĸŵʹóӽṹʹǲؾڳеѭ䣬ʹúѭãʵжϣʵ֡תơA->B->AȻҲԽãһ׼ġѭ
    һУִϷء롰ѡءʹѭ䣬ȫͬģΪӺãˡ

3.initgetйؼ֡ (ո)ʹ
    ոԱؼ֣һҼ˳
    ŵû뺯ֿ֧λentselnentselnentselpʱֱʹá(initget " ")
    Ƶû뺯ֿ֧λgetpointȣʱʹá(initget 1 " ")ֹ룬سȿΪؼʹá
    ǵͬʱʹؼʱӦýոΪһϵйؼֵһá(initget "C  ")ո񣩵ãЧ
    һ
************************************************
;;һ
(defun ett_ct()
  (initget "C  ")                                         ;ؼ֡Cո
  (setq s0 (entsel "\nɫC / ѡȡı:"))
  (cond
    ( (= s0 "C") (ett_col))                               ;תɫӺ
    ( (= s0 "") nil)                                      ;ո˳
    ( (and (= (type s0) 'LIST)                            ;ѡʵ
           (= (cdr (assoc 0 (entget (car s0)))) "TEXT")   ;бı
      )
      ...                                                 ;
      (ett_ct)                                            ;༭󷵻ѡ
    )
    (t (ett_ct))                                          ;ѡѡ
  )
)
************************************************
    ʱҪиӵжϣʹ硰(= s0 "")ܲ׼ȷбĿոؼѡ񣬿ʹá(= (type s0) 'STR)䡣

4.Lispͣwhileʹ
    LispһڽʱŻֻͣҪʵĻʾͣʹgrreadgrreadкϷ豸ӦʱֻϣԼзӦʹwhileѭ
*******************
    (princ "\nPress ENTER to continue:")
    (while (/= (car (grread)) 2))
*******************
    whileһѭ׼﷨Ϊ    (while testexpr [expr...]) 
    exprΪ testexpr Ϊ nil ֮ǰҪֵһʽΪѡR14֮ǰûзţΪѡ
    ʹwhileʱܻexprʱΪexprŻʹѭ䣬exprǲȱٵĸоʹwhile﷨whileûexpr
    ϣҼͬʱӦʹã
*******************
    (princ "\nPress ENTER to continue:")
    (while (and (/= (setq a(car (grread))) 2)     ;
                (/= a 11)                         ;ҼSHORTCUTMENU0
                (/= a 25)                         ;ҼSHORTCUTMENU0
           )
    )
*******************

5.
    LispĺΪgetdistʱҪ븺ֵʱҪͬʱõǶȣʹgetdistԵΪʱǿʹ뺯getpointgetcornerȣͨõҪֵ
    һ볤ȵͬʱõĬϽǶȵĴ룬ʹgetpoint
************************************************
;;
  (setq    pt0  (getpoint "\nֱ߻: ")
        pt1  (getpoint pt0 "\nֱ߳: ")        ;ȼǶȿü̻궨λ
        dst  (distance pt0 pt1)                   ;㳤
        ang  (angle pt0 pt1)                      ;ĬϽǶ
        ang1 (getangle pt0 (strcat "\nֱ߷<" (angtos ang 1) ">: "))
  )
************************************************
    ǿ԰зʽмĴ룬Ϊֵ޸Ĳִ븺ֵʹgetcornerͬʱʹinitgetĿλ128
************************************************
;;
  (defun lc_dist ()
    (initget 128)                                          ;
    (setq disr (getpoint "\nָλԪм: "))
    (if (= (type disr) 'LIST)                              ;
      (progn
        (initget 1)
        (setq dis (getcorner disr "\nָԽǵ: ")        ;Խ
              disc (abs (- (car dis) (car disr)))          ;ֵо
              disr (abs (- (cadr dis) (cadr disr)))        ;ֵо
          )                                                  ;м
      )
      (if (= (type disr) 'STR)                             ;о
        (if (setq dis (distof disr))                       ;жǷ
          (progn
            (initget 6)
            (setq disc (getdist "\nм: "))         ;о
          )
          (progn                                           ;ʽ
            (princ "\nҪֵάǵ㡣")
            (lc_dist)
          )
          )
          (progn                                             ;뷵
          (princ "\nҪֵάǵ㡣")
          (lc_dist)
          )
      )
    )
  )
************************************************

6.ѧ㺯
    LispжԱݽֵ͡ѧʱֱ۵ĶԱֱӸ㺯ʹ硰(eval (cons 'MAX numlist))һ㶼Խм㣬255ʱִbad argument value: does not fit in byte: 256
    ǲضݱзֶΣֱʹúapply﷨򵥣(apply 'MAX numlist)applyɽݱ͸ָĺֵӰ졣    ܱӰѧ㺯У+-*/maxminlogandlogior

7.ѡ
    ѡһṹıֻͨضĺвЩԴظĲֻͨѭʵ֣ԵģLispԱṹԽԡ
    ʵֻҪͨȡʵʵǴΪһͨṹıȫͨʵֶʵĲ
    һʹapplymapcarıѡıyֵô룬ֻһʾVL-sortʵֶı
************************************************
;;
  (setq    sl nil i  -1)
  (repeat (sslength (setq ss (ssget '((0 . "TEXT")))))      ;ѡı
    (setq i  (1+ i)
           en (ssname ss i)                                  ;ѡȡı
           sl (cons en sl)                                   ;ʵı
    )
  )
  (setq    maxy (apply 'max                                    ;ıyֵ
            (mapcar
              '(lambda (x)
                 (caddr (assoc 10 (entget x)))              ;ȡyֵ
               )
              sl
            )
         )
  )
************************************************
    ȻѡҲƵһ棬ѡʵɾǳ򵥡ѡеʵ岻ظѡ񼯿Acadʹõһ߱ģԣʱӦݳҪá

8.calʹ
    AcadһЩⲿcalõ֮һڼgromcal.arxcalLispһʹãʹڳжı㴦ü򵥣硰(cal "1+2/3")ַ"1+2/3"ԴͼεıȡҲǷcalҪʽһַAcad
    ҪעǣAcadgromcal.arxֻܼһΣظؽʹAcad˳ʾ
ҪʹcalLispӦڳβ´룺
*******************
(if (or (= (type c:cal) 'LIST)                    ;R14ʹ
        (= (type c:cal) 'SUBR)                    ;R2000+ʹ
    )
    (arxload "geomcal.arx")
)
*******************
    
9.Undo
    һƵĳӦнϺõĳLisp̲϶ἰģUndo˵úٻûἰ
    ʵUndoԳ˵ҲǷǳҪģн϶ĸӳԣܽUndo⣬ʹἫ㡣
    UndoĽһַǾûcommandԭʼһֽϺõķעǣһγһεcommandUndoȡǰǰһķڳеʼλüһνcommand硰(command "color" "")
    ʱʹcommandܴﵽҪһЩܣʹóڸӣǿҪʹһЩcommandԭʼǾӦڳнUndoʹUndoı鹦ܡ
    һγUndoʾ
************************************************
;;
(defun newerr (s)                                    ;
  (if s
    (progn
      (term_dialog)                                 ;ʹöԻʱʹ
      (if olderr (setq *error* olderr))             ;ָ
      (if oldvar (setvar ... oldvar))               ;ϵͳָ
      (if olderr (setq *error* olderr))             ;ָ
      (command "_.undo" "_e")                       ;Undo
    )
  )
  (princ)
)

(defun c:my(/ ...)                                  ;
  (setvar "cmdecho" 0)                              ;ȡʾ
  (command "_.undo" "_BE")                          ;Undo鿪ʼ
  (setq olderr *error* *error* newerr)              ;Զ
  (setq oldvar (getvar ...))                        ;ϵͳ
  (setvar ...                                       ;ϵͳ
  ...                                               ;
  ...
  (setvar ... oldvar)                               ;ָϵͳ
  (setq *error* olderr)                             ;ָ
  (command "_.undo" "_E")                           ;Undo
  (princ)                                           ;ȡ򷵻ֵ
)
************************************************

10.ǿע͵ʹ
    Ǿϻһδ븨ԣʱõҪʱεĴǰʹעͷš;ڽ϶ĴҪʹÿע͡;||;һδҪƵΣעעʹãԴ󷽱㡣

 
