如何评估lisp代码？
你好我知道在发了500多篇帖子后，这个问题听起来很复杂，但我仍然不知道评价的顺序是什么？前缀C:fun有顺序优势吗？是否先计算到按钮，然后再计算到C
如果你真的想解释，让我们以李为例
;;----------------=={ Add Objects to Block }==----------------;;
;; ;;
;;Adds all objects in the provided SelectionSet to the ;;
;;definition of the specified block. ;;
;;------------------------------------------------------------;;
;;Author: Lee Mac, Copyright © 2011 - www.lee-mac.com ;;
;;------------------------------------------------------------;;
;;Arguments: ;;
;;doc - Document Object in which block resides. ;;
;;block - Entity name of reference insert ;;
;;ss - SelectionSet of objects to add to definition ;;
;;------------------------------------------------------------;;
(defun LM:AddObjectstoBlock ( doc block ss / lst mat )
(setq lst (LM:ss->vla ss)
mat (LM:Ref->Def block)
mat (vlax-tmatrix (append (mapcar 'append (car mat) (mapcar 'list (cadr mat))) '((0. 0. 0. 1.))))
)
(foreach obj lst (vla-transformby obj mat))
(vla-CopyObjects doc (LM:SafearrayVariant vlax-vbobject lst)
(vla-item (vla-get-Blocks doc) (cdr (assoc 2 (entget block))))
)
(foreach obj lst (vla-delete obj))
(vla-regen doc acAllViewports)
)
;;-----------------=={ Remove From Block }==------------------;;
;; ;;
;;Removes an Entity from a Block Definition ;;
;;------------------------------------------------------------;;
;;Author: Lee Mac, Copyright © 2011 - www.lee-mac.com ;;
;;------------------------------------------------------------;;
;;Arguments: ;;
;;ent - Entity name of Object to Delete from Block ;;
;;------------------------------------------------------------;;
(defun LM:RemovefromBlock ( doc ent )
(vla-delete (vlax-ename->vla-object ent))
(vla-regen doc acAllViewports)
(princ)
)
;;------------------=={ Safearray Variant }==-----------------;;
;; ;;
;;Creates a populated Safearray Variant of a specified ;;
;;data type ;;
;;------------------------------------------------------------;;
;;Author: Lee Mac, Copyright © 2011 - www.lee-mac.com ;;
;;------------------------------------------------------------;;
;;Arguments: ;;
;;datatype - variant type enum (eg vlax-vbDouble) ;;
;;data - list of static type data ;;
;;------------------------------------------------------------;;
;;Returns:VLA Variant Object of type specified ;;
;;------------------------------------------------------------;;
(defun LM:SafearrayVariant ( datatype data )
(vlax-make-variant
(vlax-safearray-fill
(vlax-make-safearray datatype (cons 0 (1- (length data)))) data
)
)
)
;;------------=={ SelectionSet -> VLA Objects }==-------------;;
;; ;;
;;Converts a SelectionSet to a list of VLA Objects ;;
;;------------------------------------------------------------;;
;;Author: Lee Mac, Copyright © 2011 - www.lee-mac.com ;;
;;------------------------------------------------------------;;
;;Arguments: ;;
;;ss - Valid SelectionSet (Pickset) ;;
;;------------------------------------------------------------;;
;;Returns:List of VLA Objects, else nil ;;
;;------------------------------------------------------------;;
(defun LM:ss->vla ( ss / i l )
(if ss
(repeat (setq i (sslength ss))
(setq l (cons (vlax-ename->vla-object (ssname ss (setq i (1- i)))) l))
)
)
)
;;---------------=={ Block Ref -> Block Def }==---------------;;
;; ;;
;;Returns the Transformation Matrix and Translation Vector;;
;;for transforming Block Reference Geometry to the Block ;;
;;Definiton. ;;
;;------------------------------------------------------------;;
;;Author: Lee Mac, Copyright © 2011 - www.lee-mac.com ;;
;;------------------------------------------------------------;;
;;Arguments: ;;
;;e - Block Reference Entity ;;
;;------------------------------------------------------------;;
;;Returns:List of 3x3 Transformation Matrix, Vector ;;
;;------------------------------------------------------------;;
(defun LM:Ref->Def ( e / _dxf a l n )
(defun _dxf ( x l ) (cdr (assoc x l)))
(setq l (entget e) a (- (_dxf 50 l)) n (_dxf 210 l))
(
(lambda ( m )
(list m
(mapcar '- (_dxf 10 (tblsearch "BLOCK" (_dxf 2 l)))
(mxv m
(trans (_dxf 10 l) n 0)
)
)
)
)
(mxm
(list
(list (/ 1. (_dxf 41 l)) 0. 0.)
(list 0. (/ 1. (_dxf 42 l)) 0.)
(list 0. 0. (/ 1. (_dxf 43 l)))
)
(mxm
(list
(list (cos a) (sin (- a)) 0.)
(list (sin a) (cos a) 0.)
(list 0. 0. 1.)
)
(mapcar '(lambda ( e ) (trans e n 0 t))
'(
(1. 0. 0.)
(0. 1. 0.)
(0. 0. 1.)
)
)
)
)
)
)
;; Matrix x Vector-Vladimir Nesterovsky
(defun mxv ( m v )
(mapcar '(lambda ( r ) (apply '+ (mapcar '* r v))) m)
)
;; Matrix x Matrix-Vladimir Nesterovsky
(defun mxm ( m q )
(mapcar (function (lambda ( r ) (mxv (trp q) r))) m)
)
;; Matrix Transpose-Doug Wilson
(defun trp ( m )
(apply 'mapcar (cons 'list m))
)
;;---------------------=={ Select if }==----------------------;;
;; ;;
;;Provides continuous selection prompts until either a ;;
;;predicate function is validated or a keyword is supplied. ;;
;;------------------------------------------------------------;;
;;Author: Lee Mac, Copyright © 2011 - www.lee-mac.com ;;
;;------------------------------------------------------------;;
;;Arguments: ;;
;;msg- prompt string ;;
;;pred - optional predicate function ;;
;;func - selection function to invoke ;;
;;keyw - optional initget argument list ;;
;;------------------------------------------------------------;;
;;Returns:Entity selection list, keyword, or nil ;;
;;------------------------------------------------------------;;
(defun LM:SelectIf ( msg pred func keyw / sel ) (setq pred (eval pred))
(while
(progn (setvar 'ERRNO 0) (if keyw (apply 'initget keyw)) (setq sel (func msg))
(cond
( (= 7 (getvar 'ERRNO))
(princ "\nMissed, Try again.")
)
( (eq 'STR (type sel))
nil
)
( (vl-consp sel)
(if (and pred (not (pred sel)))
(princ "\nInvalid Object Selected.")
)
)
)
)
)
sel
)
;-------------------------------------------------------------;
; -- Test Functions -- ;
;-------------------------------------------------------------;
(defun c:Add2Block ( / *error* _StartUndo _EndUndo acdoc ss e )
(defun *error* ( msg )
(if acdoc (_EndUndo acdoc))
(or (wcmatch (strcase msg) "*BREAK,*CANCEL*,*EXIT*")
(princ (strcat "\n** Error: " msg " **")))
(princ)
)
(defun _StartUndo ( doc ) (_EndUndo doc)
(vla-StartUndoMark doc)
)
(defun _EndUndo ( doc )
(if (= 8 (logand 8 (getvar 'UNDOCTL)))
(vla-EndUndoMark doc)
)
)
(setq acdoc (vla-get-ActiveDocument (vlax-get-acad-object)))
(if
(and (setq ss (ssget "_:L"))
(setq e
(LM:SelectIf "\nSelect Block to Add Objects to: "
'(lambda ( x ) (eq "INSERT" (cdr (assoc 0 (entget (car x)))))) entsel nil
)
)
)
(progn
(_StartUndo acdoc) (LM:AddObjectstoBlock acdoc (car e) ss) (_EndUndo acdoc)
)
)
(princ)
)
;-------------------------------------------------------------;
(defun c:Remove ( / *error* _StartUndo _EndUndo acdoc e )
(defun *error* ( msg )
(if acdoc (_EndUndo acdoc))
(or (wcmatch (strcase msg) "*BREAK,*CANCEL*,*EXIT*")
(princ (strcat "\n** Error: " msg " **")))
(princ)
)
(defun _StartUndo ( doc ) (_EndUndo doc)
(vla-StartUndoMark doc)
)
(defun _EndUndo ( doc )
(if (= 8 (logand 8 (getvar 'UNDOCTL)))
(vla-EndUndoMark doc)
)
)
(setq acdoc (vla-get-ActiveDocument (vlax-get-acad-object)))
(while (setq e (car (nentsel "\nSelect Object to Remove: ")))
(_StartUndo acdoc) (LM:RemovefromBlock acdoc e) (_EndUndo acdoc)
)
(princ)
)
(vl-load-com) (princ)
;;------------------------------------------------------------;;
;; End of File ;;
;;------------------------------------------------------------;;
samifox，
它非常简单，从上到下进行评估，在评估过程中，无论您将其发送到哪里，都会加载函数，但在单独调用之前不会进行评估。这就是为什么需要将子函数列在c:defun内，或者列在被调用的c:defun外。
整个lisp文件在加载时进行评估，然后评估加载时或通过命令提示指定的“c:defun”。
页:
[1]