by Clint Brown
Have you ever exported your Inventor Drawing files to AutoCAD, and wish that you could have each part individually on it’s own layer, instead of Inventor’s pre-defined layering system? Well now you can, through the magic of iLogic.
I ran across some iLogic code on an Autodesk forum over a year ago, and have been meaning to use it in a blog. Basically what the code below does, is it gets the material of each part in the Assembly and it puts it onto a unique layer, by material. The catch here, is that if you had several Stainless Steel parts, their geometry would be shown on the same layer.
If you wanted each individual part on it’s own layer, you would need to define a different material to each part (at least temporarily) this would then allow the drawing to create a layer for each material. A nice easy way (depending on size of the overall assembly) to do this, is to change the material of components from the BOM in the Assembly, this makes it much easier, as you do not have to open each individual part.
To use this code, create a new iLogic rule in your Drawing file, and run it, this will copy the materials over to layers as described above. There are some limitations to this, you would need to run the rule every time you added a new drawing view, or add new parts to the assembly, but the result is very good
Sub Main drawDoc = TryCast(ThisDoc.Document, DrawingDocument) If (drawDoc Is Nothing) Then MessageBox.Show("This rule can only be run in a drawing,", "iLogic") Return End If ChangeLayerOfOccurrenceCurves() End Sub Private drawDoc As DrawingDocument Public Sub ChangeLayerOfOccurrenceCurves() ' Process the occurrences, wrapping it in a transaction so the ' entire process can be undone with a single undo operation. Dim trans As Transaction trans = ThisApplication.TransactionManager.StartTransaction(drawDoc, "Drawing Layers by Materials") Try For Each dSheet As Sheet In drawDoc.Sheets For Each drawView As DrawingView In dSheet.DrawingViews ' Call the recursive function that does all the work. Dim docDesc As DocumentDescriptor docDesc = drawView.ReferencedDocumentDescriptor If (docDesc Is Nothing) Then Continue For If (docDesc.ReferencedDocumentType <> DocumentTypeEnum.kAssemblyDocumentObject) Then Continue For Dim asmDef As AssemblyComponentDefinition asmDef = docDesc.ReferencedDocument.ComponentDefinition Call ProcessOccurrences(drawView, asmDef.Occurrences) Next Next Catch ex As Exception trans.Abort() Throw ex End Try trans.End() End Sub Private Sub ProcessOccurrences(ByVal drawView As DrawingView, _ ByVal Occurrences As ComponentOccurrences) ' Iterate through the current collection of occurrences. Dim occ As ComponentOccurrence For Each occ In Occurrences If (occ.Suppressed) Then Continue For If (occ.Definition Is Nothing) Then Continue For ' Check to see if this occurrence is a part or assembly. If occ.DefinitionDocumentType = DocumentTypeEnum.kPartDocumentObject Then ' ** It's a part so get the material Dim subDoc As Document = occ.Definition.Document If (subDoc Is Nothing) Then Continue For Dim partDoc As PartDocument = subDoc Dim materialName = partDoc.ComponentDefinition.Material.Name ' Get the TransientsObjects object to use later. Dim transObjs As TransientObjects transObjs = ThisApplication.TransientObjects ' Verify that a layer exists for this material. Dim layers As LayersEnumerator layers = drawDoc.StylesManager.Layers On Error Resume Next Dim newLayer As Layer newLayer = layers.Item(materialName) If Err.Number <> 0 Then On Error Goto 0 ' Copy an arbitrary layer giving it the name ' of the material. newLayer = layers.Item(1).Copy(materialName) ' Set the attributes of the layer to use the color, ' have a solid line type, and a specific width. ' newLayer.Color = newColor newLayer.LineType = LineTypeEnum.kContinuousLineType 'newLayer.LineWeight = 0.02 End If On Error Goto 0 ' Get all of the curves associated with this occurrence. On Error Resume Next Dim drawcurves As DrawingCurvesEnumerator drawcurves = drawView.DrawingCurves(occ) If Err.Number = 0 Then On Error Goto 0 ' Create an empty collection. Dim objColl As ObjectCollection objColl = transObjs.CreateObjectCollection() ' Add the curve segments to the collection. Dim drawCurve As DrawingCurve For Each drawCurve In drawcurves Dim segment As DrawingCurveSegment For Each segment In drawCurve.Segments objColl.Add(segment) Next Next ' Change the layer of all of the segments. Call drawView.Parent.ChangeLayer(objColl, newLayer) End If On Error Goto 0 Else ' It's an assembly so process its contents. Call ProcessOccurrences(drawView, occ.SubOccurrences) End If Next End Sub
The original posting of this code can be found here: