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CAD中自动计算周长的小程序只需要把以下程复到记事本中,把后缀名改为LSP加载即可用
(defun C:ZCD (/ CURVE TLEN SS N SUMLEN)
(vl-load-com)
(setq SUMLEN 0)
(setq SS (ssget '((0 . "CIRCLE,ELLIPSE,LINE,*POLYLINE,SPLINE,ARC"))))
(setq N 0)
(repeat (sslength SS)
(setq CURVE (vlax-ename->vla-object (ssname SS N)))
(setq TLEN (vlax-curve-getdistatparam
CURVE
(vlax-curve-getendparam CURVE)
)
)
(setq SUMLEN (+ SUMLEN TLEN))
(setq N (1+ N))
)
(princ (alert (strcat "\n总长度L=" (rtos SUMLEN 2 0)"mm<毫米>")))
;参考样式(command "mtext" "0,0" "j" "TL" "h" "0.5" "w" "5" all "")
(command "-style" "Standard" "宋体" "" "0.88" "" "" "")
(SETQ PT (GETPOINT "-----/请输入插入点:"))
(COMMAND "mtext" PT "S" "Standard" "h" (* 3.0 (GETVAR "DIMSCALE")) "w" "" (strcat "切割长度L=" (rtos (/ SUMLEN 1000) 2 3) "m<米>") "")
(princ)
)
;;;总长度2:
(defun C:TLEN (/ pt ss tl n ent itm obj l)
(setq ss (ssget)
tl 0
n (1- (sslength ss)))
(while (>= n 0)
(setq ent (entget (setq itm (ssname ss n)))
obj (cdr (assoc 0 ent))
l (cond
((= obj "LINE")
(distance (cdr (assoc 10 ent))(cdr (assoc 11 ent))))
((= obj "ARC")
(* (cdr (assoc 40 ent))
(if (minusp (setq l (- (cdr (assoc 51 ent))
(cdr (assoc 50 ent)))))
(+ pi pi l) l)))
((or (= obj "CIRCLE")(= obj "SPLINE")(= obj "POLYLINE")
(= obj "LWPOLYLINE")(= obj "ELLIPSE"))
(command "_.area" "_o" itm)
(getvar "perimeter"))
(T 0))
tl (+ tl l)
n (1- n)))
(alert (strcat "<不能是块和面域,注意先用es清除重复线>所选线的总长是:=" (rtos tl 2 0)"mm<毫米>"))
;参考样式(command "mtext" "0,0" "j" "TL" "h" "0.5" "w" "5" all "")
(command "-style" "Standard" "宋体" "" "0.8" "" "" "")
(SETQ PT (GETPOINT "-----/请输入插入点:"))
(COMMAND "mtext" PT "S" "Standard" "h" (* 3.0 (GETVAR "DIMSCALE")) "w" "" (strcat "切割长度=" (rtos (/ tl 1000) 2 3) "m<米>") "")
(princ)
) |
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