我正在尝试为 3D CAD 程序 Solid Edge 制作一个 Visual Basic 控制台应用程序，在这个控制台应用程序中，我希望 Visual Basic 在其中制作曲线。我想用 4 次方程制作这些曲线。用于方程的数据存储在一个空格分隔的文本文件中。在文本文件中有几行不同的数据，每一行用于制作 4 次方程。现在，我尝试制作程序，但它在制作曲线时卡住了，控制台只是保持黑色并且不会关闭。该程序确实与该程序建立了连接并打开了一个 3D 建模环境。
有谁知道我在我的代码中做错了什么，或者我应该做什么？我正在使用visual basic 2003标准。我不是程序员，但我尝试用它来自动化 3D CAD 程序中的东西。
这是我的代码：
Imports System.IO
Imports System.Runtime.InteropServices
Module Module1
Sub Main()
Dim strFileName As String = "U:\pompen.prn"
Dim objFS As New FileStream(strFileName, FileMode.Open, FileAccess.Read)
Dim objSR As New StreamReader(objFS)
Dim objApp As SolidEdgeFramework.Application = Nothing
Dim objDocuments As SolidEdgeFramework.Documents = Nothing
Dim objPart As SolidEdgePart.PartDocument = Nothing
Dim objProfileSets As SolidEdgePart.ProfileSets = Nothing
Dim objProfileSet As SolidEdgePart.ProfileSet = Nothing
Dim objProfiles As SolidEdgePart.Profiles = Nothing
Dim objProfile As SolidEdgePart.Profile = Nothing
Dim objRefplanes As SolidEdgePart.RefPlanes = Nothing
Dim objdraft2d As SolidEdgeDraft.CoordinateSystem2d = Nothing
Dim objBSpline As SolidEdgeFrameworkSupport.BSplineCurve2d = Nothing
Dim objBSplines As SolidEdgeFrameworkSupport.BSplineCurves2d = Nothing
Dim objLines2d As SolidEdgeFrameworkSupport.Lines2d = Nothing
Dim objLine2d As SolidEdgeFrameworkSupport.Line2d = Nothing
Dim objsketch As SolidEdgePart.Sketch = Nothing
Dim strEmpRecord As String
Dim type As String
Dim N1 As Double
Dim QT As Double
Dim DW1 As Decimal
Dim EQ As Decimal
Dim EH As Decimal
Dim DWL As Decimal
Dim DHL As Decimal
Dim C1 As Decimal
Dim C2 As Decimal
Dim C3 As Decimal
Dim C4 As Decimal
Dim C5 As Decimal
Dim QFACTOR As Decimal
Do While objSR.Peek <> -1
' read the current record (line) into the variable strEmpRecord
strEmpRecord = objSR.ReadLine
Try
' break up the record into separate variables
type = strEmpRecord.Substring(0, 20)
N1 = CDbl(strEmpRecord.Substring(20, 10))
QT = CDbl(strEmpRecord.Substring(30, 10))
DW1 = CDec(strEmpRecord.Substring(40, 10))
EQ = CDec(strEmpRecord.Substring(50, 10))
EH = CDec(strEmpRecord.Substring(60, 10))
DHL = CDec(strEmpRecord.Substring(70, 10))
DWL = CDec(strEmpRecord.Substring(80, 10))
C1 = CDec(strEmpRecord.Substring(90, 20))
C2 = CDec(strEmpRecord.Substring(110, 20))
C3 = CDec(strEmpRecord.Substring(130, 20))
C4 = CDec(strEmpRecord.Substring(150, 20))
C5 = CDec(strEmpRecord.Substring(170, 20))
QFACTOR = CDec(strEmpRecord.Substring(190, 10))
Catch ex As System.InvalidCastException
End Try
'connect to a Solid Edge file.
' Connect to a running instance of Solid Edge
objApp = Marshal.GetActiveObject("SolidEdge.Application")
' Get a reference to the documents collection
objDocuments = objApp.Documents
' Create a new part document
objPart = objDocuments.Add("SolidEdge.PartDocument")
' Get a reference to the profile sets collection
objProfileSets = objPart.ProfileSets
' Add a new profile set
objProfileSet = objProfileSets.Add()
' Get a reference to the profiles collection
objProfiles = objProfileSet.Profiles
' Get a reference to the ref planes collection
objRefplanes = objPart.RefPlanes
'open a new sketch
objsketch = objPart.Sketches.Add
' Add a new profile
objProfile = objProfiles.Add(objRefplanes.Item(3))
'Gat a reference to spline curve collection
objBSplines = objProfile.BSplineCurves2d
' Get a reference to the lines2d collection
objLines2d = objProfile.Lines2d
Try
'Draw the curves with 4th degree equation, DMax
Dim q As Decimal = (QT * 0.2)
Dim h As Decimal = (((q ^ 4) * C1) + ((q ^ 3) * C2) + ((q ^ 2) * C3) + (q * C4) + C5)
Do
q = (q + 0.5)
Loop Until q <= (QT * QFACTOR)
objBSpline = objBSplines.objsr.AddByPoints(q, h)
'Draw the curves with 4th degree equation, DMin
Dim qx As Decimal = ((DWL / DW1) ^ EQ)
Dim hx As Decimal = ((DWL / DW1) ^ EH)
Dim qa As Decimal = (qx * q)
Dim ha As Decimal = (hx * (((q ^ 4) * C1) + ((q ^ 3) * C2) + ((q ^ 2) * C3) + (q * C4) + C5))
Do
qa = (qa + 0.5)
Loop Until qa = (qx * (QT * QFACTOR))
objBSpline = objBSplines.objsr.addbypoints(qa, ha)
'make connection lines
objLine2d = objLines2d.AddBy2Points((qx * (QT * QFACTOR)), (QFACTOR * (hx * (((q ^ 4) * C1) + ((q ^ 3) * C2) + ((q ^ 2) * C3) + (q * C4) + C5))), (QT * QFACTOR), (QFACTOR * (((q ^ 4) * C1) + ((q ^ 3) * C2) + ((q ^ 2) * C3) + (q * C4) + C5)))
' Close the profile
objProfile.End( _
SolidEdgePart.ProfileValidationType.igProfileClosed)
Catch ex As Exception
Finally
If Not (objLine2d Is Nothing) Then
Marshal.ReleaseComObject(objLine2d)
objLine2d = Nothing
End If
If Not (objLines2d Is Nothing) Then
Marshal.ReleaseComObject(objLines2d)
objLines2d = Nothing
End If
If Not (objBSpline Is Nothing) Then
Marshal.ReleaseComObject(objBSpline)
objBSpline = Nothing
End If
If Not (objRefplanes Is Nothing) Then
Marshal.ReleaseComObject(objRefplanes)
objRefplanes = Nothing
End If
If Not (objProfile Is Nothing) Then
Marshal.ReleaseComObject(objProfile)
objProfile = Nothing
End If
If Not (objProfiles Is Nothing) Then
Marshal.ReleaseComObject(objProfiles)
objProfiles = Nothing
End If
If Not (objProfileSet Is Nothing) Then
Marshal.ReleaseComObject(objProfileSet)
objProfileSet = Nothing
End If
If Not (objProfileSets Is Nothing) Then
Marshal.ReleaseComObject(objProfileSets)
objProfileSets = Nothing
End If
If Not (objPart Is Nothing) Then
Marshal.ReleaseComObject(objPart)
objPart = Nothing
End If
If Not (objDocuments Is Nothing) Then
Marshal.ReleaseComObject(objDocuments)
objDocuments = Nothing
End If
If Not (objsketch Is Nothing) Then
Marshal.ReleaseComObject(objsketch)
objsketch = Nothing
End If
If Not (objApp Is Nothing) Then
Marshal.ReleaseComObject(objApp)
objApp = Nothing
End If
End Try
Loop
objSR.Close()
Console.WriteLine("")
Console.WriteLine("Press Enter to close this window.")
Console.ReadLine()
End Sub
End Module