Load components presentation transforms from CSV file using SOLIDWORKS API

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Components in the original positions
Components in the original positions

This example demonstrates how to load the transformation matrix for the components from the CSV file and apply it as a presentation transform using SOLIDWORKS API

  • Download and open the Example SOLIDWORKS Files
  • Download CSV File and save to disc
  • Modify the path to the CSV file in the macro constant
  • Run the macro. Macro stops the execution and the components are transformed as shown below

Components in the transformed position
Components in the transformed position

Red component is translated in XYZ space and green component is rotated 90 degrees around global Y axis (Axis 1).

Please note that the components are moved regardless the fact that both of them are fully defined in space (by mates or fix constraint). And the mates are still preserved. The reason is that the presentation transform was applied instead of the permanent one. This allows to only move the components for visual purposes without changing the geometry.

Continue the macro with F5 or Play button to remove the presentation transformation. Use IComponent2::Transform2 SOLIDWORKS API property instead of IComponent2::PresentationTransform to apply the permanent transform if needed (in this case it is required to remove any mates which will not fit this transformation).

Const INPUT_FILE_PATH = "D:\transforms.csv"

Dim swApp As SldWorks.SldWorks
Dim swAssy As SldWorks.AssemblyDoc

Sub main()

    On Error GoTo Error

    Set swApp = Application.SldWorks
    Set swAssy = swApp.ActiveDoc
    Dim vTable As Variant
    vTable = ReadCsvFile(INPUT_FILE_PATH, True)
    swAssy.EnablePresentation = True
    PreviewComponentsPosition vTable
    swAssy.EnablePresentation = False
End Sub

Function ReadCsvFile(filePath As String, firstRowHeader As Boolean) As Variant
    'rows x columns
    Dim vTable() As Variant
    On Error GoTo Error
    Dim fileName As String
    Dim tableRow As String
    Dim fileNo As Integer

    fileNo = FreeFile
    Open filePath For Input As #fileNo
    Dim isFirstRow As Boolean
    Dim isTableInit As Boolean
    isFirstRow = True
    isTableInit = False
    Do While Not EOF(fileNo)
        Line Input #fileNo, tableRow
        If Not isFirstRow Or Not firstRowHeader Then
            Dim vCells As Variant
            vCells = Split(tableRow, ",")
            Dim lastRowIndex As Integer
            If Not isTableInit Then
                lastRowIndex = 0
                isTableInit = True
                ReDim Preserve vTable(lastRowIndex)
                lastRowIndex = UBound(vTable, 1) + 1
                ReDim Preserve vTable(lastRowIndex)
            End If
            vTable(lastRowIndex) = vCells
        End If
        If isFirstRow Then
            isFirstRow = False
        End If
    Close #fileNo
    ReadCsvFile = vTable
    Exit Function

    ReadCsvFile = Empty
End Function

Sub PreviewComponentsPosition(table As Variant)
    Dim i As Integer
    For i = 0 To UBound(table)
        Dim swComp As SldWorks.Component2
        Dim compName As String
        compName = table(i)(0)
        Set swComp = GetComponent(compName)
        If Not swComp Is Nothing Then
            swComp.PresentationTransform = CreateTransform(table(i))
            Debug.Print compName & " is not found"
        End If
    Dim swModelView As SldWorks.ModelView
    Set swModelView = swAssy.ActiveView
    swModelView.GraphicsRedraw Nothing
End Sub

Function CreateTransform(tableRow As Variant) As SldWorks.MathTransform
    Dim swMathUtils As SldWorks.MathUtility
    Set swMathUtils = swApp.GetMathUtility
    Dim dMatrix(15) As Double
    dMatrix(0) = CDbl(tableRow(1)): dMatrix(1) = CDbl(tableRow(2)): dMatrix(2) = CDbl(tableRow(3)): dMatrix(3) = CDbl(tableRow(5))
    dMatrix(4) = CDbl(tableRow(6)): dMatrix(5) = CDbl(tableRow(7)): dMatrix(6) = CDbl(tableRow(9)): dMatrix(7) = CDbl(tableRow(10))
    dMatrix(8) = CDbl(tableRow(11)): dMatrix(9) = CDbl(tableRow(13)): dMatrix(10) = CDbl(tableRow(14)): dMatrix(11) = CDbl(tableRow(15))
    dMatrix(12) = CDbl(tableRow(16)): dMatrix(13) = CDbl(tableRow(4)): dMatrix(14) = CDbl(tableRow(8)): dMatrix(15) = CDbl(tableRow(12))
    Dim swXform As SldWorks.MathTransform
    Set swXform = swMathUtils.CreateTransform(dMatrix)

    Set CreateTransform = swXform
End Function

Function GetComponent(compPath As String) As Component2
    Dim swComp As SldWorks.Component2
    Dim compNames As Variant
    compNames = Split(compPath, "\")
    Dim i As Integer
    Set swComp = swAssy.ConfigurationManager.ActiveConfiguration.GetRootComponent()
    For i = 0 To UBound(compNames)
        If Not swComp Is Nothing Then
            Dim vChildComps As Variant
            Dim j As Integer
            vChildComps = swComp.GetChildren
            Dim isCompFound As Boolean
            isCompFound = False
            If Not IsEmpty(vChildComps) Then
                Dim shortCompName As String
                For j = 0 To UBound(vChildComps)
                    Dim swChildComp As SldWorks.Component2
                    Set swChildComp = vChildComps(j)
                    Dim vShortNames As Variant
                    vShortNames = Split(swChildComp.Name2, "/")
                    shortCompName = vShortNames(UBound(vShortNames))
                    If LCase(shortCompName) = LCase(compNames(i)) Then
                        Set swComp = swChildComp
                        isCompFound = True
                    End If
            End If
            If Not isCompFound Then
                Set swComp = Nothing
            End If
        End If
    Set GetComponent = swComp
End Function

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