Given a mate connector how do you find the owner body for it?

pmd

How do you go from a mate connector to the owner part?

I tried qOwnerBody(mc) but that seems to return the MC itself since MC's are bodies in their own right.

annotation { "Feature Type Name" : "OwnerOfMC" }
export const myFeature = defineFeature(function(context is Context, id is Id, definition is map)
    precondition
    {
        annotation { "Name" : "My Query", "Filter" : BodyType.MATE_CONNECTOR, "MaxNumberOfPicks" : 1 }
        definition.mc is Query;
        
    }
    {
        var mc_owner = qOwnerBody(definition.mc);
        debug(context, mc_owner);
    });

https://cad.onshape.com/documents/fc195edc346146cb553ba40a/w/ee195a6b5394daccf5b1a8d8/e/36e00d6dd082306d848814a5

The reason I want this is I am using the MC to indicate a reference point on a part and do not want the user to have select both the MC and the part.

kevin_o_toole_1

qAdjacent and qOwnerBody don't work because the mate connector is actually its own body, with BodyType.MATE_CONNECTOR.

One option is to loop through every part, and check if (evaluateQuery(qIntersection(myConnector, qMateConnectorsOfParts(part))) == []).

However, it's worth noting that mate connectors created live in the feature dialog (by selecting position that's not a previously-created mate connector feature) do NOT have owner parts. Those mate connectors will disappear when the feature dialog closes and will not be inserted with the part into an assembly.

So for this case I would actually suggest adding a separate "Part" field to specify the part. If you'd like, you can add an editing logic function which auto-populates that field with something like qClosestTo(qAllModifiableSolids(), evMateConnector(...).origin) when a mate connector is selected, but still lets the user override that if another part is needed.

marcus_bernstein

I'd bet there's a cleaner way, but depending on your application a qAdjacent may work fine. 

kevin_o_toole_1

qAdjacent and qOwnerBody don't work because the mate connector is actually its own body, with BodyType.MATE_CONNECTOR.

One option is to loop through every part, and check if (evaluateQuery(qIntersection(myConnector, qMateConnectorsOfParts(part))) == []).

However, it's worth noting that mate connectors created live in the feature dialog (by selecting position that's not a previously-created mate connector feature) do NOT have owner parts. Those mate connectors will disappear when the feature dialog closes and will not be inserted with the part into an assembly.

So for this case I would actually suggest adding a separate "Part" field to specify the part. If you'd like, you can add an editing logic function which auto-populates that field with something like qClosestTo(qAllModifiableSolids(), evMateConnector(...).origin) when a mate connector is selected, but still lets the user override that if another part is needed.

pmd

I will do as you suggest - I sort of guessed implicit MC's might be a problem. I will read up on auto-populating - seems perfect for my case. 

MBartlett21

@kevin_o_toole_1
Would we be able to use qPartsAttachedTo, like we can in Sheet Metal?

kevin_o_toole_1

@MBartlett21qPartsAttachedTo() will not give you Mate Connectors. a query like qOwnerPartsOfMateConnectors() is on our to-do list. In the meantime my suggestions above are the best solutions.