Filter out all the elementfactories in list that can handle caps in
the given direction.
If subsetonly is TRUE, then only the elements whose pads templates
are a complete superset of caps will be returned. Else any element
whose pad templates caps can intersect with caps will be returned.
Filter out all the elementfactories in list that can handle caps in the given direction.
If subsetonly is TRUE, then only the elements whose pads templates are a complete superset of caps will be returned. Else any element whose pad templates caps can intersect with caps will be returned.