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Sub jkx()% ~& b3 S" c/ X) F: T( O$ G2 O
Rem 绘制渐开线,4 N! _6 m! ~2 t8 f# v
Dim d As Double '节圆直径- J% {' X g; z; u A& z" O7 u
Dim r As Double '节圆半径9 _* R" A0 B3 ^: ]# J# A# S
Dim A As Double '总展开角度* r: }6 Y2 r! {& @5 X5 u
Dim Ai As Double '展开角度
5 I% z) U" n( c2 m3 O) [5 }4 xDim Li As Double '展开弧长
0 m; a% M6 ?- id = 100
# @0 D9 K8 u9 h8 Q; P+ F2 LA = 360$ F$ \' Y, C1 C' h7 X8 t
r = d / 2
) B3 {9 r' e/ l. l6 T0 Z2 D8 aDim Pnt1(2) As Double
9 c# w% a% P9 @5 PDim Pnt2(2) As Double
+ o" |) G6 L4 ?8 @5 pDim PntLst() As Double, N As Integer
; j% b0 [* H/ _% qThisDrawing.ModelSpace.AddCircle Pnt1, r
! s6 Z' u( t+ ]2 t/ BFor Ai = 0 To A * Atn(1) / 45# Step Atn(1) / 45#7 I) C) F) Q; y8 _3 x
Li = r * Ai" }. _ s6 F Y- D8 y \% j/ W
Pnt1(0) = r * Sin(Ai)
K, h2 C# f L* bPnt1(1) = r * Cos(Ai)
: K6 [, s! _* H) _2 W5 [Pnt2(0) = Pnt1(0) - Li * Cos(-Ai)' g1 L7 l: t& j) y+ J2 o
Pnt2(1) = Pnt1(1) - Li * Sin(-Ai)6 U: y; ~1 |4 W3 ^2 E
ThisDrawing.ModelSpace.AddLine Pnt1, Pnt2% B/ C7 `! P! k; f, K. d1 G, x
N = N + 1
- X0 ?# d+ c$ q+ M" \9 h; m7 ?: ?ReDim Preserve PntLst(N * 2 - 1)
1 I* s# r9 p+ s9 D% NPntLst(N * 2 - 2) = Pnt2(0)& `- ~$ R, D4 {0 b2 ~
PntLst(N * 2 - 1) = Pnt2(1)
; E7 ^8 e- ~" T/ MNext
0 I. L7 y9 v! y Q0 TIf N > 1 Then
2 O( B4 e- @# d2 l" N _. vThisDrawing.ModelSpace.AddLightWeightPolyline PntLst* I0 X" E6 u6 l) s& q2 K
End If
5 t, Z( s2 T/ fEnd Sub |
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发表于 2009-12-16 22:54:24
