Selecting edges on surface to extend

Jed_Yeiser

Hey there,
I'm working on a FS and I'd like to extend certain edges of a surface. These are surfaces generated in the FS. I've found very little documentation on extendSurface and opExtendSheetBody. I am able to extend an ENTIRE surface after looking at the FS generated in a part studio (I pass the surface query into the "entities" field of extendSurface), but not edges of a surface. 

While I could re-write the code of the FS to create the features slightly differently, the easiest solution to my 'problem' would be to query the edges of the surface body I'd like to extend (in this particular case - edges of the surface body which are not on the front plane) and pass that query to the extendSurface command (or opExtendSheetBody - if I can find sufficient documentation). 

the FS generated by a part studio when I use the Move Boundary tool shows a query (a qCompressed?) that is passed to the extendSurface command, but deciphering what that query actually is has proven difficult. 

How can I extend certain edges of a surface programmatically? I've checked the std documentation as well as geomOperations.fs and not found what I'm looking for - is there somewhere else I could find documentation on these features?

Thanks!
-j

Caden_Armstrong

Hey Jed,

If you pass in just the desired edges of the sheet body to the "entities" parameter in opExtendSheetBody, it will extend only those edges.
Entities can be either the sheet body or the edges of a sheet body.
I'll send you a code sample for reference.

Caden_Armstrong

the function only works on an edge with only one adjacent face. Without looking at the model/query, my best guess is an issue with the query. Checking adjacent faces with qAdjacent and debug would be a good step, or printing out the evaluated query.

Jacob_Corder

take your face and insert it into the below query in bold and italics.

var edgesToExtend = qEdgeTopologyFilter(qAdjacent(face, AdjacencyType.EDGE, EntityType.EDGE), EdgeTopology.ONE_SIDED)

Caden_Armstrong

Hey Jed,

If you pass in just the desired edges of the sheet body to the "entities" parameter in opExtendSheetBody, it will extend only those edges.
Entities can be either the sheet body or the edges of a sheet body.
I'll send you a code sample for reference.

Jed_Yeiser

Thanks, Caden! I tried passing the edges themselves and got a 'non laminar' error - I must have made a mistake somewhere else in the call. Is there somewhere I could find documentation on opExtendSheet body? The closest I've come is in geomOperations.fs. Cheers!

Caden_Armstrong

the function only works on an edge with only one adjacent face. Without looking at the model/query, my best guess is an issue with the query. Checking adjacent faces with qAdjacent and debug would be a good step, or printing out the evaluated query.

Jacob_Corder

take your face and insert it into the below query in bold and italics.

var edgesToExtend = qEdgeTopologyFilter(qAdjacent(face, AdjacencyType.EDGE, EntityType.EDGE), EdgeTopology.ONE_SIDED)