iLogic: Supress Constraints & Ground All Components

Several months back, I created an iLogic routine that will delete all mates & joints in an assembly, and ground all of the components. I was asked if I could do something similar for a client. The requirement was to supress all mates and joints, then ground all of the components in the assembly. The second part of the request was the ability to un-ground and unsupress all of the constraints/joints.

Turns out that this was very easy to do, but the one consideration is that when un-grounding everything in the assembly, the first component in the assembly will be ungrounded. To fix this, I added a few lines of code at the end of the rule to find the first instance in the browser and to ground it.

Here’s a GIF showing the code in action

Here’s the code:

'Code by @ClintBrown3D originally posted here: -->
'Some code here was borrowed from Curtis, see
'This version of the code is adapted from a sample first published here:

Dim oAssDoc As AssemblyDocument

oAssDoc = ThisApplication.ActiveDocument
Dim oConstraint As AssemblyConstraint
Dim oJoint As AssemblyJoint
qGround = True

qGround = InputRadioBox("Prompt", "Suppress Constrains + Ground all", "Unsupress Constrains + Un-Ground all", booleanParam, Title := "Unofficial Inventor ")

	i = 0
	For Each oConstraint In oAssDoc.ComponentDefinition.Constraints
		oConstraint.Suppressed = qGround
		i = i + 1

	ii = 0
	For Each oJoint In oAssDoc.ComponentDefinition.Joints
		oJoint.Suppressed = qGround
		ii = ii + 1

'get the active assembly
Dim oAsmCompDef As AssemblyComponentDefinition
oAsmCompDef = ThisApplication.ActiveDocument.ComponentDefinition

'set the Master LOD active
Dim oLODRep As LevelOfDetailRepresentation
oLODRep = oAsmCompDef.RepresentationsManager.LevelOfDetailRepresentations.Item("Master")

'Iterate through all of the top level occurrences
Dim oOccurrence As ComponentOccurrence
For Each oOccurrence In oAsmCompDef.Occurrences
	If oOccurrence.DefinitionDocumentType = DocumentTypeEnum.kAssemblyDocumentObject Then

		'Iterate through all of the 2nd level occurrences
		Dim oSub1Occ As ComponentOccurrence
		For Each oSub1Occ In oOccurrence.SubOccurrences

			'ground everything in the 2nd level
			oSub1Occ.Grounded = qGround
			If oSub1Occ.DefinitionDocumentType = DocumentTypeEnum.kAssemblyDocumentObject Then

				'Iterate through all of the 3nd level occurrences
				Dim oSub2Occ As ComponentOccurrence
				For Each oSub2Occ In oSub1Occ.SubOccurrences
					'ground everything in the 3rd level
					oSub2Occ.Grounded = qGround
			End If
	End If
	'ground everything in the top level
	oOccurrence.Grounded = qGround


'Ground the first node
Dim doc = ThisDoc.Document
Dim oDef As AssemblyComponentDefinition = doc.ComponentDefinition
Dim oCompOcc As Inventor.ComponentOccurrence
Dim oNames As New ArrayList

For Each oCompOcc In oDef.Occurrences
	GetOccName = oCompOcc.Name

Dim bob As String = oNames(0)
For Each oCompOcc In oDef.Occurrences
	If oCompOcc.Name = bob Then
		oCompOcc.Grounded = True
	End If
MessageBox.Show("Successfully processed " & i & " constraints " & ii & " joints", "iLogic - @ClintBrown3D")


This version of the code was briefly tested in Inventor 2021.

As always, please test all iLogic code extensively on non-production files. Do not use any code in a production environment until YOU have thoroughly tested it and have verified that it works as expected. Always back up any data before running any experimental code. You are ultimately responsible for any iLogic code that you run, so make sure you test it thoroughly!

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