|
|
发表于 2007-5-14 11:08:14
|
显示全部楼层
来自： 中国辽宁营口
* D3 n, r7 x' w1 v9 y
) X3 F1 Q( q5 w) uSub A()
- `" \8 q5 y" P( v m) }. F7 { Dim Alpha As Double, Alpha1 As Double, Alpha2 As Double
/ s: m4 w6 T% P3 {$ o9 J8 G Dim Pl As AcadLWPolyline, P(5) As Double
/ g3 Z6 @ k3 E; f# e! ~* u '用迭代运算寻找正确的角度Alpha
1 I7 D, b9 E# g3 g5 l Alpha2 = 1.5707963267949
7 g/ E' |$ s) Q8 U. M Do
+ r5 k# p; X; a P( v Alpha = (Alpha1 + Alpha2) / 2
6 p& I6 N5 R( e! B If Alpha = Alpha1 Or Alpha = Alpha2 Then! W! A" B/ @& J8 n6 b% A# T
If Abs(Tan(Alpha1) * 25 + (3.14159265358979 - Alpha1) * 25 - 300) < _% O$ ^- _# v' |* L
Abs(Tan(Alpha2) * 25 + (3.14159265358979 - Alpha2) * 25 - 300) Then
0 T- f0 ]6 ^& p" A Alpha = Alpha16 j. r) h7 p( x5 J
Else I3 `$ U2 R! `" H
Alpha = Alpha24 u5 c( D, n1 D$ h0 ]1 N" ^
End If
9 ?: Z; ]# t0 W" ?: B+ @$ _ Exit Do
' f! w! `+ @7 }+ U, {1 E ElseIf Tan(Alpha) * 25 + (3.14159265358979 - Alpha) * 25 = 300 Then
; P0 }' _. z4 r. t Exit Do
3 y5 c4 G% z7 `% s( l ElseIf Tan(Alpha) * 25 + (3.14159265358979 - Alpha) * 25 < 300 Then e; R* w. D% a% Q
Alpha1 = Alpha
7 n' d, r4 |! f- M6 b+ T9 W Else
+ X" z6 t) ?2 W$ l, a6 G0 X Alpha2 = Alpha3 J) X% S( f& C) q( c6 C+ B
End If* i' s, x; l$ }3 D. y" o, ]
Loop% O, p, S' A/ g8 Z, t& f v+ G0 b
'画多段线8 E. I }/ F% b5 ^( l6 Z8 p2 h. R
P(1) = 25 / Cos(Alpha) '顶点1纵坐标2 X6 H' y, U% e( P$ s
P(2) = 25 * Sin(Alpha) '顶点2横坐标
. U, J& m( z/ p! Z3 b) K- h P(3) = 25 * Cos(Alpha) '顶点2纵坐标
4 u/ d' }, G/ Y6 t/ e( w P(4) = -P(2) '顶点3与顶点2对称0 e$ k- a4 p* M1 g! @
P(5) = P(3)
4 f, l0 b) n/ g1 `+ M( O# W Set Pl = ThisDrawing.ModelSpace.AddLightWeightPolyline(P) '画多段线! b. b8 l, H J1 V4 e
Pl.Closed = True '多段线闭合
' ]5 p0 P, w* a) G Pl.SetBulge 1, -(P(3) + 25) / P(2) '第2段改为圆弧- {) x* C- {* q) F' c0 T1 x8 p
End Sub( E9 `( H* u/ ]) U; i
) o! N. D# S: I4 K2 Q& c6 j
[ 本帖最后由 woaishuijia 于 2007-5-14 20:51 编辑 ] |
评分
-
查看全部评分
|
发表于 2007-5-12 22:48:35
楼主
;)