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发表于 2007-5-14 11:08:14
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来自： 中国辽宁营口
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Sub A()
8 g0 _7 z# y" Q- p3 m; f! { Dim Alpha As Double, Alpha1 As Double, Alpha2 As Double9 S5 V* l$ `5 K: n
Dim Pl As AcadLWPolyline, P(5) As Double- c) d1 c) ]' Z/ v% ?! J# R4 v
'用迭代运算寻找正确的角度Alpha! h8 R( h$ H( S, X/ d/ l
Alpha2 = 1.5707963267949
; l0 e4 d# i6 `% k8 ` Do
& U2 E' e. ^. ~$ f Alpha = (Alpha1 + Alpha2) / 2
3 h7 L/ ?4 f* f1 l* I+ { If Alpha = Alpha1 Or Alpha = Alpha2 Then) ]& W4 _6 z% Q) {: Y+ z
If Abs(Tan(Alpha1) * 25 + (3.14159265358979 - Alpha1) * 25 - 300) < _& l7 Z: j/ O/ d( ?7 K
Abs(Tan(Alpha2) * 25 + (3.14159265358979 - Alpha2) * 25 - 300) Then$ J1 P4 k4 M8 _5 c
Alpha = Alpha1
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Alpha = Alpha2$ b& g# I0 _2 x
End If8 |2 g& w: t/ h- B
Exit Do, Q. }1 [; S3 s! J, B' D
ElseIf Tan(Alpha) * 25 + (3.14159265358979 - Alpha) * 25 = 300 Then7 q. p7 b: N; j; O
Exit Do+ a/ u; I0 Z; [- y
ElseIf Tan(Alpha) * 25 + (3.14159265358979 - Alpha) * 25 < 300 Then* f6 M- E. b8 [) R7 m" [) L
Alpha1 = Alpha
$ K# L/ G2 ~! Q" l6 F) O Else
& }" R4 n& G, Y& J! j R Alpha2 = Alpha
7 Z k5 i( M- @9 |0 n$ U End If( n8 A0 C2 k+ y8 Q8 o9 I
Loop+ p( F8 w6 ^: a3 d8 x
'画多段线, q2 [( P3 E; s* a. q: X
P(1) = 25 / Cos(Alpha) '顶点1纵坐标
/ |( P3 C" j: d: n! n+ e6 O, n5 O P(2) = 25 * Sin(Alpha) '顶点2横坐标
2 [0 S1 J; L5 X' A- z4 K P(3) = 25 * Cos(Alpha) '顶点2纵坐标
; j/ U# H2 ], ^: d W/ Q$ g! U c( E! z P(4) = -P(2) '顶点3与顶点2对称" t3 {, g8 ~, M, T- {
P(5) = P(3)! q" D' D) F. F8 M) K; h) P# s; I
Set Pl = ThisDrawing.ModelSpace.AddLightWeightPolyline(P) '画多段线
( o5 `9 K' T2 A1 {& b$ V Pl.Closed = True '多段线闭合" F0 J' F& F- y# P8 D5 l
Pl.SetBulge 1, -(P(3) + 25) / P(2) '第2段改为圆弧
/ k+ Z6 X' s7 _ f7 b( D* p2 _5 BEnd Sub
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+ r% [) Q# a7 Q7 }6 z[ 本帖最后由 woaishuijia 于 2007-5-14 20:51 编辑 ] |
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发表于 2007-5-12 22:48:35
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