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Delete Faces Example (VBA)

This example shows how to delete faces.


NOTE: You can only delete faces from a temporary body.




' Preconditions:

'       (1) Part is open.

'       (2) Part only contains one solid body.

'       (3) At least one face is selected.


' Postconditions:

'       (1) New part is created.

'       (2) New part has same body as original part

'          but with selected faces removed.


' NOTE: It may not be possible to remove the

'       selected faces. If this is the case, then

'       the new body is the same as the original

'       body.



Option Explicit

Public Enum swCreateFeatureBodyOpts_e

    swCreateFeatureBodyCheck = &H1

    swCreateFeatureBodySimplify = &H2

End Enum

Public Enum swInConfigurationOpts_e

    swThisConfiguration = 1

    swAllConfiguration = 2

    swSpecifyConfiguration = 3

End Enum

Function GetFacesWithAttribute _

( _

    swApp As SldWorks.SldWorks, _

    swBody As SldWorks.body2, _

    swAttDef As SldWorks.attributeDef _

) As Variant

    Dim swFace                  As SldWorks.face2

    Dim swEnt                   As SldWorks.entity

    Dim swAttCopy               As SldWorks.Attribute

    Dim swFaceArr()             As SldWorks.face2


    ' Search for faces on temporary body based on copied attributes

    ReDim swFaceArr(0)

    Set swFace = swBody.GetFirstFace

    Do While Not Nothing Is swFace

        Set swEnt = swFace

        Set swAttCopy = Nothing


        ' Only one instance of attribute on a face should exist

        Set swAttCopy = swEnt.FindAttribute(swAttDef, 0)


        If Not swAttCopy Is Nothing Then

            Set swFaceArr(UBound(swFaceArr)) = swFace


            ReDim Preserve swFaceArr(UBound(swFaceArr) + 1)

        End If


        Set swFace = swFace.GetNextFace


    Debug.Assert UBound(swFaceArr) >= 1

    ReDim Preserve swFaceArr(UBound(swFaceArr) - 1)


    GetFacesWithAttribute = swFaceArr

End Function

Sub main()

    '   1 = invisible

    '   0 = visible

    Const CreateVisible         As Long = 0


    Const sAttDefName           As String = "TDE_temp_attrib"

    Const sAttRootName          As String = "TDE"


    Dim swApp                   As SldWorks.SldWorks

    Dim swAttDef                As SldWorks.attributeDef

    Dim swModel                 As SldWorks.ModelDoc2

    Dim swPart                  As SldWorks.PartDoc

    Dim swBody                  As SldWorks.body2

    Dim swCopyBody              As SldWorks.body2

    Dim swSelMgr                As SldWorks.SelectionMgr

    Dim nSelCount               As Long

    Dim swFace                  As SldWorks.face2

    Dim swEnt                   As SldWorks.entity

    Dim swAtt()                 As SldWorks.Attribute

    Dim vFaceArr                As Variant

    Dim swNewPart               As SldWorks.PartDoc

    Dim swNewModel              As SldWorks.ModelDoc2

    Dim swFeat                  As SldWorks.feature

    Dim vBodies                 As Variant

    Dim i                       As Long

    Dim bLocChk                 As Boolean

    Dim nRetval                 As Long

    Dim bRet                    As Boolean


    Set swApp = Application.SldWorks

    Set swAttDef = swApp.DefineAttribute(sAttDefName)

    Set swModel = swApp.ActiveDoc

    Set swSelMgr = swModel.SelectionManager

    Set swPart = swModel


    bRet = swAttDef.Register: Debug.Assert bRet


    ' Add attribute to selected faces

    nSelCount = swSelMgr.GetSelectedObjectCount

    ReDim swAtt(nSelCount)

    For i = 1 To nSelCount

        Set swFace = swSelMgr.GetSelectedObject5(i)

        Set swEnt = swFace

        Set swAtt(i - 1) = swAttDef.CreateInstance5(swModel, swEnt, _

                            sAttRootName & i, CreateVisible, _

                            swAllConfiguration): Debug.Assert Not swAtt(i - 1) Is Nothing

    Next i


    vBodies = swPart.GetBodies2(swAllBodies, True)

    Set swBody = vBodies(0)

    Set swCopyBody = swBody.Copy



    ' Remove attribute from faces

    For i = 1 To nSelCount

        bRet = swAtt(i - 1).Delete(True): Debug.Assert bRet

    Next i



    vFaceArr = GetFacesWithAttribute(swApp, swCopyBody, swAttDef)

    Debug.Assert nSelCount = UBound(vFaceArr) + 1



    ' Can only delete faces from a temporary body

    Debug.Assert swCopyBody.IsTemporaryBody


    ' Should not assert because it may fail to delete faces or fail local check or both

    bRet = swCopyBody.DeleteFaces3(vFaceArr, 2, False, bLocChk): Debug.Assert bRet: Debug.Assert bLocChk


    ' Should not assert because body may be a surface body

    nRetval = swCopyBody.Check2: Debug.Assert 0 = nRetval



    Set swNewPart = swApp.NewPart

    Set swNewModel = swNewPart

    Set swFeat = swNewPart.CreateFeatureFromBody3(swCopyBody, False, swCreateFeatureBodyCheck): Debug.Assert Not swFeat Is Nothing

End Sub


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