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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。
3 W$ c* q& d) D f加载程序，在命令行运行am% W* H7 g* z1 D
2 n2 m8 D7 L, F/ Q! y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。; P2 `' X: S* n
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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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7 @+ D: K! E1 Y C* `* Y(defun C:am (/ ss l i totalarea ename obj entarea)' ]0 M: r$ V r# S7 I1 U
(if (setq ss (ssget))8 n1 W5 X9 N/ r
(progn: O% o9 E; r4 @* r8 j& d1 m; e
(vl-load-com)' l; h E' i4 w7 ^
(setq modelspace (vla-get-Modelspace (vla-get-activeDocument (vlax-get-acad-object)))). \3 j0 s8 S5 {1 x: z' U
(setq l (sslength ss) i 0 totalarea 0 totlength 0)) U A; }, q9 x; G
(repeat l
& P+ ?- H8 d8 W1 i6 ^5 p (setq ename (ssname ss i))- C. D+ _: Z, ]6 m
(setq obj (vlax-ename->vla-object ename)) z7 t4 I2 g" n9 }
;;(vlax-dump-object obj T)
" G W5 I" h0 N9 d; D (if (vlax-property-available-p obj "area")6 o. a9 j8 Q$ M$ d7 ~8 j. ~6 h! H+ i7 r! U
(setq totalarea (+ (vlax-get-property obj 'area) totalarea))1 v. {: B& T* @) Z( b
)) L5 h+ E, y9 k7 U* M7 x6 G! u) F2 B; U
(if (= (cdr (assoc 0 (entget ename))) "MLINE")
; S' @" k" C: y (setq totlength (+ totlength (ml-length ename)))
- m- f9 H/ L1 z1 t" ~ (setq totlength (+ totlength (vlax-curve-getdistatparam ename (vlax-curve-getendparam ename))))% Q, K, G0 }( v" Q
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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")8 q' y# \+ Y3 a! b- a: O! k* G4 ^
text2 (strcat "总长度为: " (rtos totlength 2 4) "毫米")' c7 `. Z2 X( b' Q3 Z
)
8 C& _# P8 |! w# F- C (if (setq insertpt (getpoint "\n请输入文字插入点: "))/ i' v, A+ h: L' L+ O# p
(if (setq height (getdist "\n请输入文字高度:"))
4 Z4 |2 D6 P7 F( @8 A (setq insertp1 (vlax-3d-point insertpt)9 I$ X4 x B" S! x4 x
insertp2 (vlax-3d-point (polar insertpt (* 1.5 Pi) (* 1.5 height)))0 G) V( o. S$ y3 g) i
textobj1 (vla-addtext modelspace text1 insertp1 height)
6 J, \$ o" L7 `) S8 x; D textobj2 (vla-addtext modelspace text2 insertp2 height)3 d8 b1 [- s' }7 N
)
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)
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(defun ml-length (ename / j d ptlist)
9 o* O% i4 w5 B2 R4 B; \6 k (foreach n (entget ename)
" [4 M a7 X1 k2 _4 R (if (= (car n) 11)
5 L" n5 o/ {' s4 V: L+ a (setq ptlist (cons (cdr n) ptlist))
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(reverse ptlist)2 c" ^" X3 S0 T; E- g$ k
(setq j 0 d 0)5 g: M! _( d. i0 Z* b/ e ?( {. u! J" c
(repeat (1- (length ptlist))
, l* x9 [/ k7 n$ |3 | (setq d (+ d (distance (nth j ptlist) (nth (1+ j) ptlist))))
2 c4 v1 h9 q; o% [: @ (setq j (1+ j))+ H5 T! A- r. T
)
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发表于 2008-2-1 17:04:33
发表于 2008-2-2 09:28:39
楼主