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论坛的CAD高级应用版有个画“偏心圆台”的问题。我写了程序,可只能在WCS中画,在UCS中画的问题一直没解决,请高手相助!- Imports Autodesk.AutoCAD.ApplicationServices
- Imports Autodesk.AutoCAD.DatabaseServices
- Imports Autodesk.AutoCAD.Runtime
- Imports Autodesk.AutoCAD.Interop
- Imports Autodesk.AutoCAD.Interop.Common
- Imports System.MathPublic Class Class1_程序
- '公用设置
- Const pi = 3.1415926535
- Dim app As AcadApplication = Application.AcadApplication
- Dim doc As AcadDocument = app.ActiveDocument
- Dim ms As Object = doc.ModelSpace
- Dim ut As Object = doc.Utility '------------------------函数库------------------------------
- Function dis(ByVal pa As Object, ByVal pb As Object) As Double
- Return Sqrt((pa(0) - pb(0)) ^ 2 + (pa(1) - pb(1)) ^ 2 + (pa(2) - pb(2)) ^ 2)
- End Function
- <CommandMethod("px")> Sub Cmd5_偏心圆台() MsgBox("程序将在世界坐标系中画偏心圆台!", , "AutoCAD 2005")
- doc.SendCommand("UCS" & vbCr & "w" & vbCr)
- Dim point As Object = ut.GetPoint(, "请输入偏心圆台的底面中心点:")
- Dim R1 As Double = ut.GetDistance(point, "请输入偏心圆台的底面半径:")
- Dim h As Double = ut.GetDistance(point, "请输入偏心圆台的高度:")
- Dim R2 As Double = ut.GetDistance(point, "请输入偏心圆台的顶面半径:")
- Dim d As Double = ut.GetDistance(point, "请输入偏心圆台的偏心距离:") If R2 >= R1 Then
- MsgBox("因工作较忙,程序尚未全部完成,只能画顶面半径小于底面半径的偏心圆台!", , "AutoCAD 2005")
- Exit Sub
- End If
- Dim h1 As Double = h * R1 / (R1 - R2)
- Dim dd As Double = h1 * d / h Dim p0(2) As Double : Dim p1(2) As Double
- Dim p2(2) As Double : Dim p3(2) As Double
- p0(0) = dd + point(0) : p0(1) = point(1) : p0(2) = h1 + point(2)
- p1(0) = R1 + point(0) : p1(1) = point(1) : p1(2) = point(2)
- p2(0) = -R1 + point(0) : p2(1) = point(1) : p2(2) = point(2) Dim L1 As Double = dis(p1, p0)
- Dim L2 As Double = dis(p2, p0) p3(0) = R1 * (L2 - L1) / (L1 + L2) + point(0)
- p3(1) = point(1) : p3(2) = point(2) Dim L3 As Double = dis(p3, p0)
- Dim L12 As Double = dis(p1, p2)
- Dim L13 As Double = dis(p1, p3)
- Dim L23 As Double = dis(p2, p3) Dim e As Double = (L2 ^ 2 + L3 ^ 2 - L23 ^ 2) / (2 * L2 * L3)
- Dim ang As Double = Atan(-e / Sqrt(-e * e + 1)) + 2 * Atan(1) Dim b As Double = L3 * Tan(ang)
- Dim a As Double = Sqrt(L23 * L13) Dim EL As Acad3DSolid _
- = ms.AddEllipticalCone(p3, 2 * b, 2 * a, 2 * L3) Dim e2 As Double _
- = (L23 ^ 2 + L3 ^ 2 - L2 ^ 2) / (2 * L23 * L3)
- Dim ang2 As Double _
- = Atan(-e2 / Sqrt(-e2 * e2 + 1)) + 2 * Atan(1) - 0.5 * pi Dim p333(2) As Double
- p333(0) = p3(0) : p333(1) = p3(1) + 1 : p333(2) = p3(2)
- EL.Rotate3D(p3, p333, ang2) Dim spt1(2) As Double, spt2(2) As Double
- Dim spt3(2) As Double
- Dim sliceObj As Acad3DSolid
- spt1(0) = point(0) : spt1(1) = point(1) : spt1(2) = point(2)
- spt2(0) = point(0) : spt2(1) = point(1) + 1 : spt2(2) = point(2)
- spt3(0) = point(0) + 1 : spt3(1) = point(1) : spt3(2) = point(2)
- sliceObj = EL.SliceSolid(spt1, spt2, spt3, False) spt1(0) = point(0) : spt1(1) = point(1) : spt1(2) = point(2) + h
- spt2(0) = point(0) + 1 : spt2(1) = point(1) : spt2(2) = point(2) + h
- spt3(0) = point(0) : spt3(1) = point(1) + 1 : spt3(2) = point(2) + h
- sliceObj = EL.SliceSolid(spt1, spt2, spt3, False)
- doc.Regen(AcRegenType.acAllViewports)
- app.ZoomExtents() End SubEnd Class
TranslateCoordinates 方法我也用了,可还是……
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