Hi all.
I’ve been struggling for quite a while with getting curves from Rhino into Unreal Engine fast and clean, so I ended up building my own DXF importer/exporter. It’s not limited to Rhino, any DXF export should work. Rhino is just the CAD tool I personally use most often, so it became my main test case. The goal was to make the workflow for archviz and technical projects a lot smoother and less painful in Unreal.
I also made a free DXF clipboard exporter for Rhino (available in the Package Manager under “DXF Clipboard”). The plugin adds a _CopyAsDXF command to rhino (which you can assign to a shortcut like eg. Ctrl-Shift-C) which exports the selection as a temporary DXF and puts the raw DXF text into the clipboard. The UE plugin then has the option to quickly paste/import the splines from the clipboard.