CAD LISP 程序
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1.计算所有线段总长度(加载后只需框选所有线段便可得出这些线段的总长度) (defun c:LL ()
(setvar "cmdecho" 1)
(setq en (ssget (list '(0 . "spline,arc,line,ellipse,LWPOLYLINE"))))
(setq i 0)
(setq ll 0)
(repeat (sslength en)
(setq ss (ssname en i))
(setq endata (entget ss))
(command "lengthen" ss "")
(setq dd (getvar "perimeter"))
(setq ll (+ dd ll))
(setq i (1+ i))
)
(princ "所选线条总长为：")(princ ll)(princ)
)
2.标注所有线段(加载后只需框选所有线段便可得标注这些线段)
(defun c:LLL ()
(COMMAND "UCS" "")
(setvar "cmdecho" 1)
(SETVAR "OSMODE" 0)
(setq AcadObject (vlax-get-acad-object)
AcadDocument (vla-get-ActiveDocument Acadobject)
mSpace (vla-get-ModelSpace Acaddocument)
)
;;选取需要测量的样条曲线、圆弧、直线、椭圆
(setq en (ssget (list '(0 . "spline,arc,line,ellipse,LWPOLYLINE"))))
(setq i 0)
;;获取系统参数textsize
(setq shh (getvar "textsize"))
(setq str_hh (strcat "\n文字高度<" (rtos shh 2) ">: ")) (setq hh (getdist str_hh))
(while hh
(setvar "textsize" hh)
(setq hh nil))
;;输入标注文字高度
;;循环开始
(repeat (sslength en)
(setq ss (ssname en i))
(setq endata (entget ss))
(command "lengthen" ss "")
(setq dd (getvar "perimeter"))
(princ (strcat "\n长度=" (rtos dd 2)))
;;寻找代表图层的字符串
(setq aa (assoc 0 endata))
;;获取图层名称
(setq aa1 (cdr aa))
;;判断线条种类
(cond
((= aa1 "SPLINE")
;;如果是spline
(progn
(setq arcObj (VLAX-ENAME->VLA-OBJECT ss)) (setq startPnt1 (vla-get-ControlPoints arcObj))
(setq p1
(vlax-safearray->list (vlax-variant-value startPnt1)) )
(setq x1 (car p1))
(setq z1 (caddr p1))
(setq pp1 (list x1 y1 z1))
(repeat (- (/ (length p1) 3) 1)
;;循环，寻找最后一个控制点
(setq p1 (cdddr p1))
(setq x2 (car p1))
(setq y2 (cadr p1))
(setq z2 (caddr p1))
)
(setq pp2 (list x2 y2 z2))
)
)
((= aa1 "LWPOLYLINE")
;;如果是LWPOLYLINE
(progn
(setq arcObj (VLAX-ENAME->VLA-OBJECT ss)) (setq startPnt1 (vla-get-Coordinates arcObj))
(setq p1
(vlax-safearray->list (vlax-variant-value startPnt1)) )
(setq x1 (car p1))
(setq y1 (cadr p1))
(setq z1 (caddr p1))
(setq pp1 (list x1 y1 z1))
(repeat (- (/ (length p1) 3) 1)
;;循环，寻找最后一个控制点
(setq p1 (cdddr p1))
(setq x2 (car p1))
(setq y2 (cadr p1))
)
(setq pp2 (list x2 y2 z2))
)
)
(t
;;如果是其他种类线条
(progn
(setq arcObj (VLAX-ENAME->VLA-OBJECT ss)) (setq startPnt1 (vla-get-StartPoint arcObj))
;;获取起点
(setq endPnt1 (vla-get-EndPoint arcObj))
;;获取终点
(setq pp1
(vlax-safearray->list (vlax-variant-value startPnt1))
)
(setq
pp2 (vlax-safearray->list (vlax-variant-value endPnt1)) )
)
)
)
(setq x1 (car pp1))
(setq y1 (cadr pp1))
(setq z1 (caddr pp1))
(setq x2 (car pp2))
(setq y2 (cadr pp2))
(setq z2 (caddr pp2))
(setq x (/ (+ x1 x2) 2))
(setq y (/ (+ y1 y2) 2))