Insert Coordinate System Feature at Center of Mass Example (VBA)

This example shows how to insert a coordinate system feature on the center of mass.

'-------------------------------------------------------
' Preconditions:
' 1. Open a part or assembly.
' 2. Open the Immediate window.
'
' Postconditions:
' 1. Inserts a 3D sketch at the center of mass.
' 2. Inserts a coordinate system at center of mass.
' 3. Examine the graphics area and the Immediate window.
'-------------------------------------------------------
Option Explicit

Sub main()

    Dim swApp As SldWorks.SldWorks
    Dim swModel As SldWorks.ModelDoc2
    Dim swFeatMgr As SldWorks.FeatureManager
    Dim swModDocExt As SldWorks.ModelDocExtension
    Dim swMass As SldWorks.MassProperty
    Dim vCofG As Variant
    Dim vXaxis As Variant
    Dim vYAxis As Variant
    Dim vZAxis As Variant
    Dim swSkCofG As SldWorks.SketchPoint
    Dim swSkXaxis As SldWorks.SketchLine
    Dim swSkYaxis As SldWorks.SketchLine
    Dim swSkSegXaxis As SldWorks.SketchSegment
    Dim swSkSegYaxis As SldWorks.SketchSegment
    Dim swSelMgr As SldWorks.SelectionMgr
    Dim swSelData As SldWorks.SelectData
    Dim swFeat As SldWorks.Feature
    Dim swCoordSys As SldWorks.CoordinateSystemFeatureData
    Dim swComp As SldWorks.Component2
    Dim bRet As Boolean    

    Set swApp = Application.SldWorks
    Set swModel = swApp.ActiveDoc
    Set swSelMgr = swModel.SelectionManager
    Set swSelData = swSelMgr.CreateSelectData
    Set swModDocExt = swModel.Extension

    Set swMass = swModDocExt.CreateMassProperty
    vCofG = swMass.CenterOfMass
    vXaxis = swMass.PrincipleAxesOfInertia(0)
    vYAxis = swMass.PrincipleAxesOfInertia(1)
    vZAxis = swMass.PrincipleAxesOfInertia(2)
    swModel.Insert3DSketch2 False
    swModel.SetAddToDB True
    Set swSkCofG = swModel.CreatePoint2(vCofG(0), vCofG(1), vCofG(2))
    Set swSkXaxis = swModel.CreateLine2(vCofG(0), vCofG(1), vCofG(2),  vCofG(0) + vXaxis(0), vCofG(1) + vXaxis(1), vCofG(2) + vXaxis(2))
    Set swSkYaxis = swModel.CreateLine2( vCofG(0), vCofG(1), vCofG(2), vCofG(0) + vYAxis(0), vCofG(1) + vYAxis(1), vCofG(2) + vYAxis(2))
    Set swSkSegXaxis = swSkXaxis
    Set swSkSegYaxis = swSkYaxis
    swModel.SetAddToDB False
    swModel.Insert3DSketch2 True
    swModel.ClearSelection2 True
    swSelData.Mark = 1
    bRet = swSkCofG.Select4(True, swSelData): Debug.Assert bRet
    swSelData.Mark = 2
    bRet = swSkSegXaxis.Select4(True, swSelData): Debug.Assert bRet
    swSelData.Mark = 4
    bRet = swSkSegYaxis.Select4(True, swSelData): Debug.Assert bRet
 
    ' Insert the coordinate system feature, get the feature, and modify it, using the feature data
    Set swFeatMgr = swModel.FeatureManager
    Set swFeat = swFeatMgr.InsertCoordinateSystem(False, False, False)
    If swFeat Is Nothing Then
        Debug.Print "Did not get coordinate system feature."
    Else
        Set swCoordSys = swFeat.GetDefinition
        bRet = swCoordSys.AccessSelections(swModel, swComp)        
        Debug.Print "XFlipped? " & swCoordSys.XFlipped
        swCoordSys.XFlipped = True        

        ' Get the origin entity
        Dim gvx As Variant
        Dim vxCount As Long
        Dim i As Long
      

        ' Get the origin entity
        Dim entType As Long
        Dim geo  As Object
        Dim oent As SldWorks.Entity
        Dim skpnt As SldWorks.SketchPoint
        Set geo = swCoordSys.OriginEntity

        ' Is it an entity?
        If TypeOf geo Is Entity Then
            Set oent = geo
            entType = geo.GetType
            Debug.Print "Entity type: " & entType
        Else
            Debug.Print "Is sketch point."
            Set skpnt = geo
            If Not skpnt Is Nothing Then
                Debug.Print "Got sketch point."
            End If
        End If
        

        Dim xEnt As Object
        vxCount = swCoordSys.GetXAxisEntitiesCount
        gvx = swCoordSys.XAxisEntities
        

        ' Find out about the x axis entities
        Dim skent As SldWorks.SketchSegment
        For i = 0 To UBound(gvx)
            Set xEnt = gvx(i)
            If TypeOf xEnt Is SketchSegment Then
                Set skent = xEnt
                entType = skent.GetType
                Debug.Print "Entity type: " & entType
            End If
        Next i    

        bRet = swFeat.ModifyDefinition(swCoordSys, swModel, Nothing)
        

        swCoordSys.ReleaseSelectionAccess
 

    End If    

End Sub