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Sub jkx()' _/ ?: f, d" j" _ _- V! ?
Rem 绘制渐开线," C5 L4 P5 X0 T% }
Dim d As Double '节圆直径) j! @7 d2 x9 h3 j4 l# ?) M
Dim r As Double '节圆半径
+ E y+ i, W4 p( x/ D% m$ BDim A As Double '总展开角度1 @! m4 [. G: c% T v/ h" H
Dim Ai As Double '展开角度
# n5 O+ I! L, ?9 E1 H- nDim Li As Double '展开弧长
7 t5 \2 W8 Y; X/ r, p3 sd = 100
/ @9 g/ a( W0 y4 z, L. VA = 360
0 z; ?$ i& H' q: @r = d / 27 |) [$ g3 F5 P V" B7 \( O
Dim Pnt1(2) As Double
G4 J* c% [: c7 B" E) S& RDim Pnt2(2) As Double
2 [/ Z4 k# k" T0 h* a8 ~; LDim PntLst() As Double, N As Integer
) `" v9 Z- Y* z# \0 j9 OThisDrawing.ModelSpace.AddCircle Pnt1, r) A& U" R" J& J: O; S
For Ai = 0 To A * Atn(1) / 45# Step Atn(1) / 45#( h( C- }8 m, T
Li = r * Ai) L. u5 j2 g3 }
Pnt1(0) = r * Sin(Ai)
; Y, q2 M/ n6 o% ~4 U+ r8 XPnt1(1) = r * Cos(Ai)
2 P: e( ^7 y& y0 E/ k0 {( h7 ?Pnt2(0) = Pnt1(0) - Li * Cos(-Ai)
/ x2 {/ m, u, L- f( B0 rPnt2(1) = Pnt1(1) - Li * Sin(-Ai)0 H# i0 q4 C, ]* z
ThisDrawing.ModelSpace.AddLine Pnt1, Pnt2# e- W( d% }) H# L, s' | S
N = N + 1
& T8 L! |+ z: P4 G3 e; h/ ]# TReDim Preserve PntLst(N * 2 - 1)+ [. m* _: f( ^) K6 G9 t8 B
PntLst(N * 2 - 2) = Pnt2(0)6 C! h- M: k7 @7 h8 l9 K* @% g$ e1 x% C
PntLst(N * 2 - 1) = Pnt2(1)
?/ |$ a! a$ ZNext5 D6 [, _# Z3 ?5 F8 S, P' g6 a
If N > 1 Then1 |( W. Z7 R& i
ThisDrawing.ModelSpace.AddLightWeightPolyline PntLst$ L# u; `+ a& Q( w! v
End If0 p4 D5 w* |: S" W F
End Sub |
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发表于 2009-12-16 22:54:24
