How can I check if parallel elements?

[Anonymous]

Hello!
I'm trying to create fixtures instances along the conduit. But depending on the conduit direction, I get instance which is parallel the conduit.
How can I determine this situation when instance is parallel to conduit, if conduit based on LocationCurve and instance based on LocationPoint? 
I would be appreciate any help!

[AGGilliam]

When placing a FamilyInstance, you can use the basisX (or basisY) of its transform to determine which direction it's facing (even if it's point based). So you could use that to determine whether they're parallel.