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Sub jkx()% A& k4 Y6 c$ V9 K
Rem 绘制渐开线,
C( a0 u8 x+ tDim d As Double '节圆直径
/ [ a! H, o" N& `Dim r As Double '节圆半径2 m7 ^! |, ^2 y* v5 s1 V6 O$ X
Dim A As Double '总展开角度6 P# G) O& R5 ?' m
Dim Ai As Double '展开角度
% \2 p! `( z+ M0 Z' s; TDim Li As Double '展开弧长6 M6 d4 F) T0 N$ l
d = 100( S% s0 I, H* d# Q# ] m3 @0 X6 A3 {
A = 360
7 p3 A% A+ {" ]8 c/ }r = d / 2
}- S P) V) k7 |( TDim Pnt1(2) As Double
) e/ X1 T0 X& d: O8 [0 P0 c5 UDim Pnt2(2) As Double) T& V8 U- R! C4 m* K
Dim PntLst() As Double, N As Integer
5 S7 y4 `3 D4 d+ u- i3 R+ LThisDrawing.ModelSpace.AddCircle Pnt1, r
! W) W b! G, V F$ D7 s9 p+ Z% B+ CFor Ai = 0 To A * Atn(1) / 45# Step Atn(1) / 45#
8 u v, }; N3 c, M# wLi = r * Ai
7 n1 E8 Z! c- }, N- P" VPnt1(0) = r * Sin(Ai)7 t; q! h) I: X5 _' @# ]
Pnt1(1) = r * Cos(Ai)
. z, {. l4 |! w) g& S4 XPnt2(0) = Pnt1(0) - Li * Cos(-Ai)0 t0 {6 f$ K/ V) K* M1 ?
Pnt2(1) = Pnt1(1) - Li * Sin(-Ai), S" Q& H7 r+ A- g
ThisDrawing.ModelSpace.AddLine Pnt1, Pnt2( E: c" I" v; h2 G
N = N + 1
+ j. O) u& C$ [9 nReDim Preserve PntLst(N * 2 - 1)
/ m* J' [5 h- y7 I! } nPntLst(N * 2 - 2) = Pnt2(0)
1 W7 s8 F; ^ j: p* H- k: xPntLst(N * 2 - 1) = Pnt2(1)5 H$ A% k9 U; N$ j8 ]. Y, `
Next6 u# [7 M. r/ j, x$ D4 l
If N > 1 Then8 D2 M9 S: N8 G! p6 {0 w5 Z5 o9 ?
ThisDrawing.ModelSpace.AddLightWeightPolyline PntLst
7 b& m3 \0 B1 Z5 O' `! cEnd If
- T2 I3 C& H- [: Z$ Y( I* yEnd Sub |
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发表于 2009-12-16 22:54:24
