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Sub jkx()
. S5 {" S. F8 c; J0 I) x2 XRem 绘制渐开线,1 |2 ?- j3 O6 ~9 o- C: L4 N
Dim d As Double '节圆直径. {8 C) d/ c# L9 |# P; R9 w
Dim r As Double '节圆半径4 S) ? n* v E/ k4 B
Dim A As Double '总展开角度
" J+ w4 b! n) M: d9 S! d8 E) k- RDim Ai As Double '展开角度% \: q" X, M0 R
Dim Li As Double '展开弧长1 L' E# V2 ]$ U" C
d = 100! Q0 o$ y q8 ~0 {
A = 360, T) b4 D# O! @3 z
r = d / 2
' n+ R3 z7 }# ~' kDim Pnt1(2) As Double t, n0 V7 o# ^! M+ d
Dim Pnt2(2) As Double y. s: S4 G ^4 j( n( G/ R7 }& d/ M
Dim PntLst() As Double, N As Integer3 c5 L% \* R- ^. _3 i; ^( g
ThisDrawing.ModelSpace.AddCircle Pnt1, r: @1 i T' z" E$ R
For Ai = 0 To A * Atn(1) / 45# Step Atn(1) / 45#( C2 i* B: }4 R" \5 e
Li = r * Ai
/ ]7 y$ S+ X5 o0 APnt1(0) = r * Sin(Ai)
3 c" ^7 `* l7 S7 }1 R7 A/ mPnt1(1) = r * Cos(Ai)5 t) u( r. V G% P& l' e9 I6 ]% w, @9 l
Pnt2(0) = Pnt1(0) - Li * Cos(-Ai)' h5 C' F3 F7 T
Pnt2(1) = Pnt1(1) - Li * Sin(-Ai)
( i3 q! z D2 A& N9 MThisDrawing.ModelSpace.AddLine Pnt1, Pnt2) Z. |! a) X/ e5 y- ^% N; F
N = N + 1, O" n; |) v! z" b- s; b- y# U0 x
ReDim Preserve PntLst(N * 2 - 1)* O) n8 ]: t- p Y( x9 ?
PntLst(N * 2 - 2) = Pnt2(0)7 i6 a. d! f' m( G% M
PntLst(N * 2 - 1) = Pnt2(1)# n9 ~& a, E! s) v- `4 n0 D& }
Next8 I# {& _0 Z; S# B) `/ L" { L
If N > 1 Then/ E' A5 a) X1 U$ _5 Q9 D2 k
ThisDrawing.ModelSpace.AddLightWeightPolyline PntLst8 ?. i; z" a& H- \
End If" X, X* A+ Q& I9 A. ?
End Sub |
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发表于 2009-12-16 22:54:24
