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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。4 ^0 k u$ u Q G6 r$ C- R
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？
! }% V$ W( a2 r& m. H% Q" i4 q代码如下：
8 ]: \1 O" y; g" Q; I8 MPrivate Function GetFSupportCenter(BSupportCenter As Variant, FSwingBasePoint As Variant) As Variant
# E% J6 W+ u5 R1 L+ M) W8 Y7 J& |* GDim Testlayer As AcadLayer
4 j; S8 B4 N, lDim ObjCircle1 As AcadCircle '辅助圆/ ]- I) C5 u4 m% n5 y! t9 z) C8 O
Dim ObjCircle2 As AcadCircle
3 Q1 ~4 g. C$ A Y( x2 Q; GDim SWingLength As Double
* J# v! K- x& `. d0 w sDim SWingPitch As Double( q' s" k& E3 X' z2 M6 y' L) P
Dim PT(0 To 2) As Double
Q- Q8 T5 G0 B/ {( V3 k! B4 T ~/ SSet Testlayer = ThisDrawing.Layers.Add("非显示层" ) '辅助线位于非显示层
3 O0 x. t* \1 B/ U% {5 A2 N. Q9 kTestlayer.color = acRed
" S- J+ n l rThisDrawing.Application.ActiveDocument.ActiveLayer = Testlayer '激活图层; |, `7 d1 A7 Y# J
Testlayer.LayerOn = True d# e$ K, w: v+ l' i: s. a
SWingLength = 2607! L$ h- I9 d" C! J8 f5 X+ F) }$ Z
SWingPitch = 3250+ A& A7 C/ o. T
) j0 a7 v5 L5 W! wSet ObjCircle1 = ThisDrawing.ModelSpace.AddCircle(FSwingBasePoint, SWingLength) '作辅助线9 R+ x% R' @5 E( m3 K
Set ObjCircle2 = ThisDrawing.ModelSpace.AddCircle(BSupportCenter, SWingPitch)' p# j; z' D1 }! t# K$ x
% ^: E1 i- g4 W0 }- c4 V5 {Dim IntPoints As Variant
. b' i8 n( z: R+ f% J" ^) J IntPoints = ObjCircle2.IntersectWith(ObjCircle1, acExtendNone) '获取交点并判断
/ H# d' Q4 K$ d6 @! z1 z3 W& u9 t
If VarType(IntPoints) = vbEmpty Then
6 `# a- U; \) s6 U/ K! L8 EMsgBox "没有交点!"4 u, D: `& M! i2 s, v( S
ElseIf BSupportCenter(1) = FSwingBasePoint(1) Then
' w* }3 G: a) R6 ~( P/ g* W For i = LBound(IntPoints) + 1 To UBound(IntPoints) Step 3" b# _4 @: l2 M
On Error Resume Next
! b- `# x- s" P8 L$ n& Y/ V% Z) p If IntPoints(i) < BSupportCenter(1) Then
/ Y2 R/ ]- H* z) C5 Q9 Z9 `; m0 C PT(0) = IntPoints(i - 1): PT(1) = IntPoints(i): PT(2) = IntPoints(i + 1)
2 g0 S- u0 X3 W. I& X GetFSupportCenter = PT '函数返回值/ g1 o4 m5 U, l, d8 R. h
End If
) ~6 C. _6 a4 h u1 o8 |0 Y/ O9 I* w Next
* N7 r" g& ?2 q# |0 xElse
+ T7 ~1 f5 o/ |) z+ s1 A qFor i = LBound(IntPoints) To UBound(IntPoints) Step 3
9 X- y5 [& M$ i3 f5 r On Error Resume Next
. q7 b1 x8 Z9 m- y* r7 R If (IntPoints(i + 1) - FSwingBasePoint(1)) / (BSupportCenter(1) - FSwingBasePoint(1)) - (IntPoints(i) - FSwingBasePoint(0)) / (BSupportCenter(0) - FSwingBasePoint(0)) < 0 Then2 E$ {5 ^4 G( {
PT(0) = IntPoints(i): PT(1) = IntPoints(i + 1): PT(2) = IntPoints(i + 2)- w) W& Z* N% B. k) k
GetFSupportCenter = PT '函数返回值( J# d, X1 a+ m% k
End If: q* D5 [( a$ ^: T" J2 e: O
Next
) F: v5 \8 m. TEnd If' z# ?; R3 @2 R8 K) a5 R, x) a
'ObjCircle1.Delete
" _ Q' L, a8 j& A'ObjCircle2.Delete
. U8 c! |9 p8 v6 l7 YEnd Function
$ U' j/ {1 C6 I( C A* z! n, c' N% b1 E0 O) P. G$ t
Sub trial()
; ?# u7 k3 ^$ t# O) O& h7 F/ vDim A As Variant5 i+ Z( ]7 z) t- ]5 f
Dim B As Variant; g9 Q$ Y/ @) A7 |- m9 ^- b
Dim C As Variant
2 p2 I$ s i* F' t2 |3 A( f4 P- s9 OA = ThisDrawing.Utility.GetPoint(, "后支撑碗中心：" )9 x2 J( O, X0 {/ T1 G/ B# {
B = ThisDrawing.Utility.GetPoint(, "前摆杆上铰接点：" )
$ }. b; s3 {+ s7 Y2 ]C = GetFSupportCenter(A, B): V; u1 x' F! I- G2 f
MsgBox "前支撑碗中心坐标：" & C(0) & "," & C(1) & "," & C(2)- V' Z" m5 j9 `
End Sub |
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发表于 2008-12-6 16:38:29
发表于 2008-12-6 18:27:44