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Sub jkx()
5 L3 P" }4 q y+ T& Q: f2 WRem 绘制渐开线,
b! P2 `: y8 M2 \4 sDim d As Double '节圆直径
7 x3 Z. d2 m1 i' dDim r As Double '节圆半径1 s9 U7 q7 d3 L- A/ g
Dim A As Double '总展开角度0 d' N6 k: Q) h# x: W% P% o
Dim Ai As Double '展开角度
, w: X9 `& H) }5 x3 @Dim Li As Double '展开弧长
9 K6 _% g+ ?. D; m( O N$ j: A* bd = 100
& Q# g+ [: K+ uA = 360
& k+ s" J! E$ ^1 C9 Y+ ^r = d / 2
7 s- }/ S, m. ADim Pnt1(2) As Double
/ U2 I8 ?3 n. X2 _4 I& A0 e+ mDim Pnt2(2) As Double
! d2 v1 F& w0 j4 X! h% S7 F# WDim PntLst() As Double, N As Integer
/ D! j* x& j- M/ _ThisDrawing.ModelSpace.AddCircle Pnt1, r. O5 M2 d0 n& w2 m
For Ai = 0 To A * Atn(1) / 45# Step Atn(1) / 45#% V7 a- ]1 L6 T% f, m
Li = r * Ai9 I! s7 j$ I* _* G# s
Pnt1(0) = r * Sin(Ai)
& T1 \" \: I6 P% ^9 }- Q; [* e* sPnt1(1) = r * Cos(Ai)
}1 F# G8 H7 QPnt2(0) = Pnt1(0) - Li * Cos(-Ai)9 a# d4 m, t8 D4 _+ Y
Pnt2(1) = Pnt1(1) - Li * Sin(-Ai)
' c8 v/ R; c5 h& ^ O; AThisDrawing.ModelSpace.AddLine Pnt1, Pnt2
) U7 A2 V8 r! _2 j5 l, Z' f9 \: N uN = N + 1$ `5 ~% y, Z2 [) k$ j- S4 w
ReDim Preserve PntLst(N * 2 - 1)
' c) O* u# `! hPntLst(N * 2 - 2) = Pnt2(0)7 h2 \' X5 q6 U$ E* ^. g: n: j
PntLst(N * 2 - 1) = Pnt2(1)
* d" V1 x/ `5 m% H7 C9 E! Y; d) ANext5 L/ R7 S' A! l: b' D" H8 V
If N > 1 Then
; X: I+ T6 j ?ThisDrawing.ModelSpace.AddLightWeightPolyline PntLst* j- A! [" h0 J+ R
End If
" C4 A3 f; g6 l1 X! v1 ZEnd Sub |
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发表于 2009-12-16 22:54:24
