Re: 3D geomerty for export

Dear Michael,

Thank you for your query.

The most comfortable way to grab 3D geometry from Revit is to tap into the graphics rendering pipeline using a custom exporter:

http://thebuildingcoder.typepad.com/blog/about-the-author.html#5.1

The probably produces various flavours of the tessellations that you describe.

If you use any other method to access the geometry, you might be able to get 'clean' pure non-tessellated surfaces.

In that case, however, you will need to deal with transformation and placement issues.

This article might be of special interest:

http://thebuildingcoder.typepad.com/blog/2015/06/angelhack-athens-sustainability-and-export-precision.html#4

I hope this helps.

I would be very interested to hear how you end up solving this.

Thank you!

Best regards,

Jeremy