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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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S% q5 n/ G3 {4 z0 w1 WSub A()7 w0 e6 K, J' Z, ^( m4 e+ \- S
Dim Alpha As Double, Alpha1 As Double, Alpha2 As Double
& M1 p- T8 u) _- v8 N Dim Pl As AcadLWPolyline, P(5) As Double+ x5 h7 @8 u) X7 ]2 ~
'用迭代运算寻找正确的角度Alpha% G8 G% _7 n8 Q) M
Alpha2 = 1.5707963267949, I4 u2 J' ~1 e9 R, ?0 w: k6 G
Do) A# P6 [0 _; @7 L/ i
Alpha = (Alpha1 + Alpha2) / 2
9 \ j) ?+ J: b! _; D' j& s$ V/ [ If Alpha = Alpha1 Or Alpha = Alpha2 Then
, g5 U7 \. U2 s6 d% ?7 p9 t If Abs(Tan(Alpha1) * 25 + (3.14159265358979 - Alpha1) * 25 - 300) < _0 A2 j2 d* K1 | o8 A
Abs(Tan(Alpha2) * 25 + (3.14159265358979 - Alpha2) * 25 - 300) Then
1 G& u/ v V2 H: ~0 A# u Alpha = Alpha1
7 _* v+ f# v3 [+ ]$ Q Else8 v0 I- K# e- |4 c
Alpha = Alpha2
a! x* l+ q. I/ F, _% d ?1 ] End If" e* `4 z; ~5 k2 d$ k
Exit Do
S, s, N0 ~% w: L$ o ElseIf Tan(Alpha) * 25 + (3.14159265358979 - Alpha) * 25 = 300 Then
/ I0 n, q3 K5 Q8 h& p6 \/ [ Exit Do
# C2 _, k( l ?. ? ?" E, }3 J ElseIf Tan(Alpha) * 25 + (3.14159265358979 - Alpha) * 25 < 300 Then
7 J, v+ W" x+ { r) |; f Alpha1 = Alpha
& U. P- v% L: f. ? f, M Else; T" ]) e! ?' ^9 R/ P
Alpha2 = Alpha3 Q3 ~+ } Y- { X% P. T1 w
End If
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'画多段线5 h, D+ o0 j7 `! v. E1 v) X
P(1) = 25 / Cos(Alpha) '顶点1纵坐标; O: k! ]7 E3 V4 P7 Q4 J8 \/ H7 A
P(2) = 25 * Sin(Alpha) '顶点2横坐标; Z6 d4 C2 z8 K- Z
P(3) = 25 * Cos(Alpha) '顶点2纵坐标5 [/ u, T# N1 [$ [" F1 g: u
P(4) = -P(2) '顶点3与顶点2对称1 G# U \* ^( g ?1 n6 `
P(5) = P(3)
/ \% J1 L( v& b- s9 W Set Pl = ThisDrawing.ModelSpace.AddLightWeightPolyline(P) '画多段线
$ |, W5 b& G" {- i4 P Pl.Closed = True '多段线闭合$ @- Y+ D3 @. w3 g5 }
Pl.SetBulge 1, -(P(3) + 25) / P(2) '第2段改为圆弧8 l8 |2 ?+ c% R6 y; J
End Sub
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* N4 e) M- i0 \: @0 f, ^. 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
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