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分享一个AUTOCAD渐开线画法小程序:+ C# s! i4 O- ~4 Y4 R
8 \8 k: _6 i p& c Sub jkx(), |. n8 q$ l4 @) L* q( t
Rem 绘制渐开线,3 q5 O9 j2 }( |- W) N% v$ ~$ ]
Dim d As Double '节圆直径
4 E2 U; c4 U1 s' t# {" p Dim r As Double '节圆半径
3 b% v& ]- l1 F& l Dim A As Double '总展开角度
; z7 M; N! G$ P" V Dim Ai As Double '展开角度
9 y: Y& g3 V: l Dim Li As Double '展开弧长2 Q" |3 L7 f6 ~# e" H' ~: x" B% I
d = 1005 c0 |- y' m2 M& r$ A% O
A = 360
$ g8 c, s0 o9 Q4 r' F0 `: }% y/ k0 t r = d / 23 R0 {0 E7 K0 n+ g( b
Dim Pnt1(2) As Double
2 y( v) x- J+ \, X& s6 D7 H Dim Pnt2(2) As Double
8 R/ t4 x- y4 g! S8 Y Dim PntLst() As Double, N As Integer1 K4 C" U& P/ N$ U; G' g+ w+ j
ThisDrawing.ModelSpace.AddCircle Pnt1, r) b4 g' s# E' h
For Ai = 0 To A * Atn(1) / 45# Step Atn(1) / 45#
7 D) v* {. r. C3 { Li = r * Ai: p1 K! C, c$ s$ x
Pnt1(0) = r * Sin(Ai)
9 _2 H4 x: @$ q( ?) L Pnt1(1) = r * Cos(Ai)% o8 j! h3 ^. z# g5 }( s
Pnt2(0) = Pnt1(0) - Li * Cos(-Ai)
9 E% T( v$ u3 G) T+ y Pnt2(1) = Pnt1(1) - Li * Sin(-Ai)
/ W1 P, e) R) [8 v T( L) R ThisDrawing.ModelSpace.AddLine Pnt1, Pnt2
" h: J* f1 N- R8 B ^0 \ N = N + 1
# ~! `/ H! s# t9 | ReDim Preserve PntLst(N * 2 - 1)
$ b3 d4 Q0 Z# n7 N PntLst(N * 2 - 2) = Pnt2(0)# P7 R8 N; |9 }+ L
PntLst(N * 2 - 1) = Pnt2(1)
' O3 L2 C% S8 M- T0 z" } Next! Y D0 @0 d7 ]) p
If N > 1 Then
3 g6 _8 ~( R# `6 f- b D" e ThisDrawing.ModelSpace.AddLightWeightPolyline PntLst
n+ E E- `2 h4 T% A End If/ a ?$ w- S9 z+ d& m
End Sub/ `5 |) f- h/ O
" v+ D- ?0 K; z" h l1.进入菜单:工具>宏>visual Basic编辑器;
% S5 E3 A& O9 }; e( t( P2.在编辑器中选菜单:插入>模块;
1 h7 Q' O1 C4 c; x. E0 {" K3.把这部分程序拷贝到（代码）窗口中;
: v R$ Y9 e. L8 k4.选择菜单：运行>运行子过程用户窗体;
+ }7 G/ y$ s& i0 ^" Q- `5.在AutoAcad绘图界面中可以看到结果. |
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发表于 2008-1-30 21:58
