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Sub jkx()+ {+ S$ Q6 I: B2 B& w) u% O' A
Rem 绘制渐开线,
' s- l1 S( I& M1 W- W4 x7 ^" Z2 F# xDim d As Double '节圆直径
: \. W! S F) ^6 q( t; `Dim r As Double '节圆半径7 a* U$ O i9 Z- X' ?
Dim A As Double '总展开角度3 {2 h! i% O3 T1 {
Dim Ai As Double '展开角度
4 ~( t7 A, |' t& \6 TDim Li As Double '展开弧长
- s" Q6 ?/ \: n$ ?- X# l+ Hd = 100( `( p7 W( \) `7 ~+ ~
A = 3607 V8 ~' E- n1 G$ {! f9 @4 S
r = d / 27 W3 L9 r' l: P2 i, K
Dim Pnt1(2) As Double
/ P; g# L( Q: R2 l! {* ~Dim Pnt2(2) As Double5 M# ~7 Y: @" b3 f! U U
Dim PntLst() As Double, N As Integer
; t2 p# |7 G' |7 FThisDrawing.ModelSpace.AddCircle Pnt1, r* x. E% F& T& g, Y5 V& i9 Y* ?
For Ai = 0 To A * Atn(1) / 45# Step Atn(1) / 45#7 `2 r9 F% }. B9 z/ s2 k
Li = r * Ai
; u9 d- R1 y( N$ \8 dPnt1(0) = r * Sin(Ai)
6 L3 V; g" b( t1 a( G1 X" mPnt1(1) = r * Cos(Ai)
3 x( g- j. j( x! v# oPnt2(0) = Pnt1(0) - Li * Cos(-Ai)9 g4 F; P: D% A4 X' j
Pnt2(1) = Pnt1(1) - Li * Sin(-Ai)2 c% F( a9 d* A% h3 [, x2 w4 y
ThisDrawing.ModelSpace.AddLine Pnt1, Pnt2* S( d( Z o8 A* ?7 j0 v
N = N + 12 d' e- x2 i6 K: W' c8 q( g
ReDim Preserve PntLst(N * 2 - 1)
, h+ i$ r$ G2 K6 HPntLst(N * 2 - 2) = Pnt2(0)
: j4 D5 h: j( }5 l; B3 c6 L3 _PntLst(N * 2 - 1) = Pnt2(1)
+ W( j7 q6 {& [ l: ]; n* ANext
( @+ E& j2 I2 L c/ ` oIf N > 1 Then7 [% v" b2 ~! b- ?6 o
ThisDrawing.ModelSpace.AddLightWeightPolyline PntLst) i# u5 u" m: ^4 t2 X+ p& D
End If5 ~4 N9 Z/ @! [9 a% K- T2 W
End Sub |
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发表于 2009-12-16 22:54:24
