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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()
7 \+ a4 L4 T$ @; i- O S/ ~ Dim Alpha As Double, Alpha1 As Double, Alpha2 As Double5 l% O3 d2 O. c5 u, a) S, \9 A! p
Dim Pl As AcadLWPolyline, P(5) As Double6 q! N% Q4 r+ C- I. f. i
'用迭代运算寻找正确的角度Alpha
& ] I6 @! @- K/ d Alpha2 = 1.57079632679493 f" W" r" [/ X5 q; M
Do8 W5 h& C) b& }( t0 Q
Alpha = (Alpha1 + Alpha2) / 2
: |/ v u3 C- ]+ R# y' k$ b If Alpha = Alpha1 Or Alpha = Alpha2 Then
1 h9 B: C5 E; M& C, C& S( K If Abs(Tan(Alpha1) * 25 + (3.14159265358979 - Alpha1) * 25 - 300) < _& Q/ o, l( |2 n9 c/ M% i7 |
Abs(Tan(Alpha2) * 25 + (3.14159265358979 - Alpha2) * 25 - 300) Then
& U0 j2 ?' R3 _7 p* Y0 Q6 _: @0 j Alpha = Alpha1
4 }2 F+ `8 j8 I! ? Else
3 I& C4 A* }* r. ~5 a/ i7 t Alpha = Alpha2
! T$ ~/ y; R6 A( J. @' t End If
3 w! U. @5 L$ J' n0 \ Exit Do6 |5 Z+ T& A* W1 s' T, U: x7 }' e
ElseIf Tan(Alpha) * 25 + (3.14159265358979 - Alpha) * 25 = 300 Then
t3 k3 P3 Z4 ` Exit Do1 p A1 I% ^# t* u- H
ElseIf Tan(Alpha) * 25 + (3.14159265358979 - Alpha) * 25 < 300 Then
) n" `; Y/ Q! K5 x: { Alpha1 = Alpha3 R6 E- x1 x+ J w! C
Else
6 r+ u8 K K) S# c Alpha2 = Alpha
f/ `5 B! }. V D End If
5 H. _$ L7 V1 A- T! W. U Loop* Z5 Z' ~! v- P9 _* r1 r, c
'画多段线
0 [/ Q5 V3 b _; K/ B; u+ H P(1) = 25 / Cos(Alpha) '顶点1纵坐标
5 u! i+ o+ M0 K# t P(2) = 25 * Sin(Alpha) '顶点2横坐标- @$ k3 C9 D; }4 `5 U- C
P(3) = 25 * Cos(Alpha) '顶点2纵坐标
4 z7 W4 @" F W6 f$ i5 N P(4) = -P(2) '顶点3与顶点2对称! F( m- B" s# @0 T2 y7 I" k" [
P(5) = P(3): A9 P$ c1 r2 L( K/ k/ V
Set Pl = ThisDrawing.ModelSpace.AddLightWeightPolyline(P) '画多段线
9 Q4 t! I9 ? ` [+ f6 S8 r j; _, f Pl.Closed = True '多段线闭合
. q& U% q( [2 U9 F7 J3 } Pl.SetBulge 1, -(P(3) + 25) / P(2) '第2段改为圆弧
$ w# B/ K% q% b+ ~8 m% EEnd Sub# E. b9 K; ?# m) Z
# i: }! N; d2 k! l! y[ 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
楼主
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