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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。
% J$ D8 ?9 Y8 g* e T: @* L加载程序，在命令行运行am
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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。% E0 d) u ~7 K
9 U0 {/ w+ y- ^# X指定位置和高度，就可以用文字标注出来。) v( n; {" o$ R" G
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(defun C:am (/ ss l i totalarea ename obj entarea)4 U6 W: ^% ?7 B9 s& Z" G6 G& i$ |4 l5 h
(if (setq ss (ssget))
2 g( c5 C5 C: C3 Y (progn0 [" u: }7 U& Q8 a; [1 k
(vl-load-com)
9 |1 u) C% \# r" A' Z$ r/ e (setq modelspace (vla-get-Modelspace (vla-get-activeDocument (vlax-get-acad-object))))( q) n; L1 V F+ n' ]
(setq l (sslength ss) i 0 totalarea 0 totlength 0)
6 j( u, S& ]9 P$ B (repeat l" R8 [7 c8 S% W) O; R' C
(setq ename (ssname ss i))
* {6 U2 e1 j; Q7 c% w" ~0 V0 F (setq obj (vlax-ename->vla-object ename)), ~) x3 ~# R9 V# |! d8 X6 P
;;(vlax-dump-object obj T)
5 l3 Y2 O b9 u8 L6 m' A0 V (if (vlax-property-available-p obj "area")7 t$ N) P! V' |7 B+ ]# |5 L
(setq totalarea (+ (vlax-get-property obj 'area) totalarea))
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(if (= (cdr (assoc 0 (entget ename))) "MLINE")2 \ M0 j# ?6 w
(setq totlength (+ totlength (ml-length ename)))# B- O9 m$ b9 U; _4 _* v3 ]8 {+ |
(setq totlength (+ totlength (vlax-curve-getdistatparam ename (vlax-curve-getendparam ename))))& }# a' r' {) K) p0 Q, e
)
$ B8 h0 a9 s; u; h, N- ? (setq i (1+ i))
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0 ]$ ^) Q9 y9 p1 D+ `# e (setq text1 (strcat "总面积为: " (rtos totalarea 2 4) "平方毫米")3 t0 O( H9 f7 `1 h& k
text2 (strcat "总长度为: " (rtos totlength 2 4) "毫米")
3 [* z- f0 ?) p+ b )
2 U9 N7 w) O- L1 Y! | (if (setq insertpt (getpoint "\n请输入文字插入点: "))
# r8 N9 `1 L( u1 f+ P8 I# s2 J (if (setq height (getdist "\n请输入文字高度:"))8 c- O }) W t
(setq insertp1 (vlax-3d-point insertpt)
& W5 @% z; ^8 y1 E' O* J" c7 C! S insertp2 (vlax-3d-point (polar insertpt (* 1.5 Pi) (* 1.5 height)))
) P5 k' i! y1 ~. h4 V) w textobj1 (vla-addtext modelspace text1 insertp1 height)* _% v; a+ F$ h- F; m6 L2 C; G' m
textobj2 (vla-addtext modelspace text2 insertp2 height)0 l7 q6 `" o3 |$ }; z7 J
)
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)
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(defun ml-length (ename / j d ptlist)1 _( [: C# L9 O/ H- m
(foreach n (entget ename)
" e3 ~% g: y( s. `' p" M& H (if (= (car n) 11)
) b; \2 f: T6 J (setq ptlist (cons (cdr n) ptlist))# I1 H& d4 K" k* F4 Z4 P
)
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(reverse ptlist), p, F& |/ m" o) Q9 p% X
(setq j 0 d 0)* l% F4 w& ?% ]; D" k
(repeat (1- (length ptlist))7 u/ R7 I. F* D- z, J( ?
(setq d (+ d (distance (nth j ptlist) (nth (1+ j) ptlist))))
0 }/ F8 d7 y. I9 |# | (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