Creating Polysurfaces

[GeomGym]

Hi All,

I notice with the native Revit IFC importer that it's able to generate very quickly a number of families containing a faceted polysurface.  This  object has planar faces, usually with a polyline boundary.

I've implemented similar for my addon to import IFC files, primarily using a mass family and calling the method

famDoc.FamilyCreate.NewFormByCap(true, ra); with a reference array of lines (each time for each face).  This seems much, much slower.

Any suggestions for other methods to try to work faster would be greatly appreciated.

Cheers,

Jon

[jeremytammik]

The only multi-facet object I am aware of is the TopographySurface via NewTopographySurface, cf.

http://thebuildingcoder.typepad.com/blog/2010/01/import-landxml-surface.html

[GeomGym]

Hi Jeremy,

Thanks for the response.  Is there any means to create just a simple planar face (a family document could have many without "connected" edges) that has planar but arbitrary edge curves?

I'm trying to create say a foundation object that is not an extrusion (but has planar faces) and it's seems this family template is compatible with the form creation commands.

Thanks in advance,

Jon

[Revitalizer]

Hi GeoGym,

you could write your own DXF files and import these ones into your family files.

Best regards,

Revitalizer

[GeomGym]

Hi,

Thanks for the reply.  It's a potential way of getting geometry.

But you can't assign materials etc it seems and it would mean I'd need to develop a DXF exporter.

I think I'll open an ADN  case on this.

Thanks,

Jon