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做两个圆求交点，然后判断，两圆有交点时，程序运行正常。
8 E, g9 f: A) Y5 F& ~5 F/ ^( `问题出在没有交点时，我本想输出对话框提示，然而系统报警，说“类型不匹配”，各位看看怎么回事？
6 R6 w, g2 K2 `! m代码如下：
- I6 z u! W9 o7 W" l- h! m: U' jPrivate Function GetFSupportCenter(BSupportCenter As Variant, FSwingBasePoint As Variant) As Variant
6 L+ g: f5 i" [+ l+ T, m8 nDim Testlayer As AcadLayer
1 y% @4 O$ ? A1 x7 aDim ObjCircle1 As AcadCircle '辅助圆3 s6 n6 \6 v" x
Dim ObjCircle2 As AcadCircle
+ L' p3 d$ p9 S: \& wDim SWingLength As Double
3 Z/ }( ?" f% t4 cDim SWingPitch As Double
2 x" d! N" X3 b4 j V/ X" DDim PT(0 To 2) As Double% {' y3 H& C% i7 N
Set Testlayer = ThisDrawing.Layers.Add("非显示层" ) '辅助线位于非显示层
1 \' J4 [: Q, ~0 s# [( jTestlayer.color = acRed+ i" c/ T, l0 T
ThisDrawing.Application.ActiveDocument.ActiveLayer = Testlayer '激活图层
# Q5 y5 E" k" i1 lTestlayer.LayerOn = True
8 k8 H$ h9 q/ |/ W MSWingLength = 2607
6 C- x* V7 a TSWingPitch = 3250
) S5 B, T, y+ v. w3 a2 P; b! {: M- Q' Q% }) A4 U3 u, P+ I6 K
Set ObjCircle1 = ThisDrawing.ModelSpace.AddCircle(FSwingBasePoint, SWingLength) '作辅助线
4 |6 U! i2 k2 c" t$ vSet ObjCircle2 = ThisDrawing.ModelSpace.AddCircle(BSupportCenter, SWingPitch)* Q7 u* M0 ]0 G; G3 o e9 ~
9 X: Y* U9 ^$ {) ADim IntPoints As Variant
: l( n4 o# X3 l/ `7 p, @ IntPoints = ObjCircle2.IntersectWith(ObjCircle1, acExtendNone) '获取交点并判断/ s+ v+ e% R$ s7 X6 }
/ m- j! Q6 _* f$ x! M6 k. i& J9 c- W
If VarType(IntPoints) = vbEmpty Then
3 z6 C: u5 b/ @; C1 q4 s( mMsgBox "没有交点!"* z( }: N+ u" G- P- n5 d7 V O! O
ElseIf BSupportCenter(1) = FSwingBasePoint(1) Then! v- j% s N2 r6 I
For i = LBound(IntPoints) + 1 To UBound(IntPoints) Step 3
$ ~; d" N; o3 N% X On Error Resume Next6 X2 n2 x6 \5 L1 a0 T6 A
If IntPoints(i) < BSupportCenter(1) Then
; s6 n1 K5 t. y: Q1 K$ _$ v PT(0) = IntPoints(i - 1): PT(1) = IntPoints(i): PT(2) = IntPoints(i + 1)! b: p5 J8 X: C& A
GetFSupportCenter = PT '函数返回值
; y- o# }6 E5 h9 q End If: L( e, K; ~9 P8 ~7 q, F) D
Next
/ A8 V9 Y. q+ {' m' S6 CElse
' t9 d1 R3 U, l2 z. iFor i = LBound(IntPoints) To UBound(IntPoints) Step 31 C1 R5 k# C' n( D
On Error Resume Next$ Y$ b# |# M. P: @9 w
If (IntPoints(i + 1) - FSwingBasePoint(1)) / (BSupportCenter(1) - FSwingBasePoint(1)) - (IntPoints(i) - FSwingBasePoint(0)) / (BSupportCenter(0) - FSwingBasePoint(0)) < 0 Then
' G1 Y6 Y- ~7 }& C9 @' Z1 g7 c9 S PT(0) = IntPoints(i): PT(1) = IntPoints(i + 1): PT(2) = IntPoints(i + 2)
2 a! H! U3 ?8 F( R ^) V) ?* s& [ GetFSupportCenter = PT '函数返回值, |7 z T/ M) r
End If& O" e j( y0 \) h, J
Next
N1 @( d( Y0 ?+ y+ N* rEnd If
: C' `8 j9 {* K'ObjCircle1.Delete
" L' b9 K5 ]4 C6 L8 f'ObjCircle2.Delete
( [6 L% x; T" G- a. d0 PEnd Function
" ~' I. ~; c- h! m- n0 y6 O0 `4 t M$ u0 Y0 k
Sub trial()
\' z/ U' Q& q' t8 J9 M; ^Dim A As Variant
; d: O5 V% t8 T' B C# KDim B As Variant
4 P, O! \: W( lDim C As Variant
. j' Z8 @" V. }7 F# z9 h3 T; l! aA = ThisDrawing.Utility.GetPoint(, "后支撑碗中心：" )
" i8 O! U# w# l: J; N& }9 CB = ThisDrawing.Utility.GetPoint(, "前摆杆上铰接点：" )
% ?" o5 T/ r1 xC = GetFSupportCenter(A, B); _/ h3 B/ E d: ^/ I4 ?
MsgBox "前支撑碗中心坐标：" & C(0) & "," & C(1) & "," & C(2)+ K" ?: g9 S& ~# y& G( x% d* F T
End Sub |
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发表于 2008-12-6 16:38:29
发表于 2008-12-6 18:27:44