yueyaer 发表于 2005-5-24 19:20:00

求助:

有没有人知道如何用VBA在CAD中画半个标准椭圆,谁能告诉我一下,万分感谢

armylee 发表于 2005-5-24 23:17:00

画椭圆addellipse，并给定开始角度喝结束角度。

yueyaer 发表于 2005-5-25 08:12:00

我试了一下,好象画不出来呢,,能不能具体告诉我一下啊,呵呵

armylee 发表于 2005-5-25 08:23:00

&ltRE class=Code>Sub Example_EndAngle()
    ' This example creates an ellipse and enters the start and
    ' end angles to create an elliptical arc.
    Dim ellObj As AcadEllipse
    Dim majAxis(0 To 2) As Double
    Dim center(0 To 2) As Double
    Dim radRatio As Double
   
    ' Create an ellipse in model space
    center(0) = 5#: center(1) = 5#: center(2) = 0#
    majAxis(0) = 10: majAxis(1) = 20#: majAxis(2) = 0#
    radRatio = 0.3
    Set ellObj = ThisDrawing.ModelSpace.AddEllipse(center, majAxis, radRatio)
   
    'Enter a start angle of 45 degrees, and an end angle of 270 degrees
    ellObj.startAngle = 45 * (3.14 / 180)
    ellObj.endAngle = 270 * (3.14 / 180)
    ZoomAll
    MsgBox "This ellipse has a start angle of " & ellObj.startAngle * (180 / 3.14) & " and the end angle of " & ellObj.endAngle * (180 / 3.14) & " degrees.", vbInformation, "EndAngle Example"
End Sub

yueyaer 发表于 2005-5-25 14:14:00

太谢谢你了,我画了好久呢,你好厉害啊
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