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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。
% ? c3 K5 B0 V. ?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。, h! O3 X5 N% ~# p5 N0 X2 T- |
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指定位置和高度，就可以用文字标注出来。
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(defun C:am (/ ss l i totalarea ename obj entarea)9 U: R. J- E; A. J. N
(if (setq ss (ssget))# f1 t4 n+ H- B4 [8 Q, ]9 l
(progn
5 @1 ~) h {8 ?' j (vl-load-com)
* j/ \) F+ C! u- |' V9 ~; G% J (setq modelspace (vla-get-Modelspace (vla-get-activeDocument (vlax-get-acad-object))))2 H# v2 V) r; ?1 G
(setq l (sslength ss) i 0 totalarea 0 totlength 0)* s8 m, G& N1 p# F3 x4 E
(repeat l
* a- T" D1 Q% A) e; Z6 h8 W1 m1 | (setq ename (ssname ss i))) s' B- Z0 s6 e/ T! e _5 Z1 o
(setq obj (vlax-ename->vla-object ename))
% [5 t$ X9 C7 k9 }% g. T ;;(vlax-dump-object obj T): [1 e1 l1 v9 C$ A! b) h
(if (vlax-property-available-p obj "area")$ v4 A& a+ k- z: Z2 z2 M- I
(setq totalarea (+ (vlax-get-property obj 'area) totalarea))
) ?. I& x2 k/ k+ O3 e )
) O, ]" [. Q/ s3 {+ Q6 l' c9 t2 l (if (= (cdr (assoc 0 (entget ename))) "MLINE")1 Y# y1 f4 Z8 A2 r. s
(setq totlength (+ totlength (ml-length ename)))
5 h' g& x# e% z, t' j& q" `; J (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")
" p" F4 I- x$ V' Z. `% ^$ b text2 (strcat "总长度为: " (rtos totlength 2 4) "毫米")
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(if (setq insertpt (getpoint "\n请输入文字插入点: "))
, x# m, Y, ^. o O- \% [$ z/ i: x (if (setq height (getdist "\n请输入文字高度:"))
- I) O3 h$ v. R; A: e4 A6 d (setq insertp1 (vlax-3d-point insertpt)
7 {$ u+ \( _9 m6 p$ Z insertp2 (vlax-3d-point (polar insertpt (* 1.5 Pi) (* 1.5 height)))6 H( R9 d% O( i+ l
textobj1 (vla-addtext modelspace text1 insertp1 height)0 u' Y0 ^2 T" r/ S* ]+ B
textobj2 (vla-addtext modelspace text2 insertp2 height) s4 f2 ]! G0 B9 B* ^
)
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)
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)
* p1 g4 `+ A% e, O& `/ q/ k0 T! |(defun ml-length (ename / j d ptlist)
9 F9 ? O' |, c6 ~ (foreach n (entget ename)
* d7 |. Y. U3 l/ M (if (= (car n) 11)
2 W% C( |6 W0 |5 h4 E* y) I0 \ (setq ptlist (cons (cdr n) ptlist))+ C* }) O: {3 n7 H6 h
)
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# R" ~; {+ ~* w* C (reverse ptlist)% U F# b7 [ `1 t& ^$ J
(setq j 0 d 0)2 _& x8 Q) a0 _8 V, n
(repeat (1- (length ptlist))
& U$ S5 E3 j, B+ G( z; r# ? (setq d (+ d (distance (nth j ptlist) (nth (1+ j) ptlist))))( J. V# b8 \. R
(setq j (1+ j))" l" j2 `/ h9 Q! k; {' I
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发表于 2008-2-1 17:04:33
发表于 2008-2-2 09:28:39
楼主