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关于对于面积求和和长度求和，还是有很多用途，在这里写一个lisp程序。
/ o( f- `6 k0 y2 S: R加载程序，在命令行运行am
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6 U; W& z+ G' g/ A4 O/ W选择你要求和的物体，可以是line ,circle,arc ,ellipse ,spline, polyline,mline等，算出面积和长度。1 c" v3 u! P: A
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指定位置和高度，就可以用文字标注出来。, C3 `. L& G& i! T& q
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@7 b6 Y7 p* ~* j7 Z(defun C:am (/ ss l i totalarea ename obj entarea)1 r5 M: l: _8 p- K3 t. d4 Q
(if (setq ss (ssget))5 O/ a T. c* l' X
(progn
! m) v$ K% h8 N1 A (vl-load-com)2 h5 {# }: g6 P% l S( n
(setq modelspace (vla-get-Modelspace (vla-get-activeDocument (vlax-get-acad-object))))
9 a& `- N* [+ T- Y l/ u5 T (setq l (sslength ss) i 0 totalarea 0 totlength 0)& O4 l. k0 P% k9 ]( D% q, v _
(repeat l: T5 L* E4 x" K& w, @
(setq ename (ssname ss i))
9 w8 X4 b4 |4 D6 l6 ? (setq obj (vlax-ename->vla-object ename))
+ m; {/ O. n5 `6 _$ z. J# Q ;;(vlax-dump-object obj T)% W9 n! }7 [/ U( D1 N7 N o7 s4 O- h
(if (vlax-property-available-p obj "area"), }2 u+ d+ O9 y) U3 s% \
(setq totalarea (+ (vlax-get-property obj 'area) totalarea)) ]* g3 s- G7 l, W, f! {
)
. o% K4 T. Y4 R (if (= (cdr (assoc 0 (entget ename))) "MLINE")
$ ]3 K) o/ m, Q( f- b (setq totlength (+ totlength (ml-length ename)))
" q2 h8 h, S$ \6 V( ?- n* T0 P7 A+ I, j6 L (setq totlength (+ totlength (vlax-curve-getdistatparam ename (vlax-curve-getendparam ename))))
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(setq i (1+ i))
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(setq text1 (strcat "总面积为: " (rtos totalarea 2 4) "平方毫米")
: Z0 u4 U; r/ E- @, _; U: [7 [ text2 (strcat "总长度为: " (rtos totlength 2 4) "毫米")
i9 | C2 N# L3 p4 K: ] )
0 u$ e- a% X5 O0 W% b2 n (if (setq insertpt (getpoint "\n请输入文字插入点: "))1 C3 O" F" M7 C! u8 A: u) z
(if (setq height (getdist "\n请输入文字高度:"))# }( q" u9 x* E2 V- g
(setq insertp1 (vlax-3d-point insertpt)
7 V9 @* ]% S, X6 N: A. ?5 _0 I8 C insertp2 (vlax-3d-point (polar insertpt (* 1.5 Pi) (* 1.5 height)))' T. W& T" A+ V" T( J( Y) e
textobj1 (vla-addtext modelspace text1 insertp1 height)& d& s' `$ s/ v0 H' H) P1 J( f
textobj2 (vla-addtext modelspace text2 insertp2 height)( s# X: b/ q3 `+ |" p
)
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(defun ml-length (ename / j d ptlist) `5 o2 d( ~! }; i: Z
(foreach n (entget ename)9 K# h5 u7 W; e" ~) h
(if (= (car n) 11)
% K" Q6 ^/ V" ]- B+ S (setq ptlist (cons (cdr n) ptlist))
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(reverse ptlist)( R; x5 w2 }7 g( T3 Q
(setq j 0 d 0)
% b9 A# T2 M' w8 V (repeat (1- (length ptlist))( n6 H1 k! N# a. S0 v0 ~
(setq d (+ d (distance (nth j ptlist) (nth (1+ j) ptlist))))
; R3 c7 ]# m# O" r9 t/ A (setq j (1+ j))
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发表于 2008-2-1 17:04:33
发表于 2008-2-2 09:28:39
楼主