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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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6 X/ c' F# G, Y) r) uSub A()9 G" w; z- ]5 l q$ R; n
Dim Alpha As Double, Alpha1 As Double, Alpha2 As Double* r- \7 Y7 P* ]$ \; {, R7 o
Dim Pl As AcadLWPolyline, P(5) As Double
5 l) j+ E3 \' y' L '用迭代运算寻找正确的角度Alpha
5 n3 T% \" f: }5 ^ Alpha2 = 1.5707963267949$ R- `' n3 w" g
Do% f0 i- n" d* @! U# b9 N. ^
Alpha = (Alpha1 + Alpha2) / 2* Z8 s) ~) \) ~( O) O% E. y
If Alpha = Alpha1 Or Alpha = Alpha2 Then
L4 w" Y6 {/ i: M8 W" S& J If Abs(Tan(Alpha1) * 25 + (3.14159265358979 - Alpha1) * 25 - 300) < _
) t4 L) J" L7 ~' [' {, x Abs(Tan(Alpha2) * 25 + (3.14159265358979 - Alpha2) * 25 - 300) Then; U+ {! j8 |% t$ E8 I a/ I
Alpha = Alpha1
) B) | o2 A {* e p Else- f' O) p0 j" F# O
Alpha = Alpha2
$ c, E6 s$ | ]; ?* B( ]3 M d End If
2 t& ~1 j; {- q Exit Do" d+ F+ N, \+ F% a) Q+ Y
ElseIf Tan(Alpha) * 25 + (3.14159265358979 - Alpha) * 25 = 300 Then4 o% k4 Q. @4 \% M3 }$ f. N E
Exit Do
8 `8 b: j# a4 h& c" X ElseIf Tan(Alpha) * 25 + (3.14159265358979 - Alpha) * 25 < 300 Then
$ a0 K7 l1 _! p, T Alpha1 = Alpha
& u" @2 S0 ^& Y) r# }7 b- X Else: h6 f9 R) Z! ~1 ]+ z, l, h
Alpha2 = Alpha
. D' B$ H! v9 N* [ End If
7 W. p% {1 G7 P- o3 K* y l1 T Loop
/ t8 e- A, Z; n: H '画多段线
; `, B+ [. c; n; L+ Z0 A" [ P(1) = 25 / Cos(Alpha) '顶点1纵坐标
+ U B- P& _5 K6 j5 [- `0 M/ U W P(2) = 25 * Sin(Alpha) '顶点2横坐标
9 R1 B% y q8 g) z' |2 q P(3) = 25 * Cos(Alpha) '顶点2纵坐标
. }! f( S- \8 g P(4) = -P(2) '顶点3与顶点2对称* e2 I" o3 c1 V9 }5 U0 N- c
P(5) = P(3)
+ e9 O: q. s* ^" S2 ] Set Pl = ThisDrawing.ModelSpace.AddLightWeightPolyline(P) '画多段线% ?8 {: }3 g- o. [
Pl.Closed = True '多段线闭合
8 e" \( C7 M+ d) e4 X/ c2 i1 s) m Pl.SetBulge 1, -(P(3) + 25) / P(2) '第2段改为圆弧/ S7 h7 X$ d' ^$ R$ R- S) K% j
End Sub
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[ 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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