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Sub jkx()2 x a% _: P5 ?8 q' V1 s2 u& A/ X
Rem 绘制渐开线,
. ^4 J5 Z' [/ N6 q# q4 WDim d As Double '节圆直径8 _6 j) p4 c T( A" v+ W# ^
Dim r As Double '节圆半径2 ^4 p& ^; o" k+ ]
Dim A As Double '总展开角度
/ e. ?5 h8 D) O% j. u" B. f. m1 EDim Ai As Double '展开角度
) [# s; _6 J7 VDim Li As Double '展开弧长9 I h6 g3 z3 w6 ^0 ]
d = 100
' |* k, P1 D% v ^2 B U6 A( qA = 360
: I1 \0 E% H; V2 x- }r = d / 2" Y0 y" l/ Z& W; g; |
Dim Pnt1(2) As Double* s% P3 S/ c+ |4 k4 Y9 L
Dim Pnt2(2) As Double
8 k2 F0 p/ o. X# cDim PntLst() As Double, N As Integer4 h" A% `) w' J9 Y. ?* _
ThisDrawing.ModelSpace.AddCircle Pnt1, r
+ Q2 D5 J8 ]1 R' c2 o: |For Ai = 0 To A * Atn(1) / 45# Step Atn(1) / 45#$ t: ~7 p; F+ Y7 v N
Li = r * Ai5 k3 ?+ W, c9 c! m8 [" ^
Pnt1(0) = r * Sin(Ai)+ |1 j7 @' g8 d P; X0 o
Pnt1(1) = r * Cos(Ai)
( b. v/ H- t; ?7 `Pnt2(0) = Pnt1(0) - Li * Cos(-Ai)
* J/ ?* ?* F* ~' J/ W* UPnt2(1) = Pnt1(1) - Li * Sin(-Ai)8 N) V1 u! ^ l! t
ThisDrawing.ModelSpace.AddLine Pnt1, Pnt2& D) }5 s7 H y1 p* f
N = N + 1) C; I2 X3 G! E: J% I y4 w0 A& {
ReDim Preserve PntLst(N * 2 - 1)( \! B. V4 a" X1 D
PntLst(N * 2 - 2) = Pnt2(0)
; r. f/ {: V8 e6 ePntLst(N * 2 - 1) = Pnt2(1)- e8 p: S+ u* A1 ^
Next
1 k% B" V& |( g: a6 ZIf N > 1 Then2 A: A, D5 l6 l4 H; v
ThisDrawing.ModelSpace.AddLightWeightPolyline PntLst9 D- {1 i& x# Y6 U7 v( f
End If" D# h6 o o( P4 P. y! m3 D, H8 M
End Sub |
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发表于 2009-12-16 22:54:24
