BoundaryPatch to sketch relationship

[gilsdorf_e]

Hi, 

I'm struggling to get the relationship between BoundaryPatchFeature and input sketch in API. 

In the Inventor model tree, sketches show up as direct inputs to boundary patches. In API it seems cumbersome to get this relation. I cannot find any "parent" property, that would return an input sketch for a boundary patch.

The other way around, I can try to get the dependents of the sketches. This works so so, if you only have one loop per sketch. 

Then the boundary patch is a direct dependent of the planar sketch.

If there is more than one loop per sketch, the sketch will have a "ProfileObject" as dependent.

I'm I missing something or is there a magic property to get this easier, instead of iterating through multiple levels of dependents?

[JelteDeJong · Accepted solution]

Try it like this:

Dim doc As PartDocument = ThisDoc.Document
Dim features As PartFeatures = doc.ComponentDefinition.Features

Dim boundaryPatchFeature As BoundaryPatchFeature = features.BoundaryPatchFeatures.Item(1)
Dim boundaryPatchLoop As BoundaryPatchLoop = boundaryPatchFeature.Definition.BoundaryPatchLoops.Item(1)
Dim profile As Profile = boundaryPatchLoop.BoundaryPath
Dim sketch As Sketch = profile.Parent

MsgBox(sketch.Name)

[gilsdorf_e]

Thank you.