Loft surfaces with Rhino3dm

Dancergraham · September 5, 2019, 3:15pm

Hello,

I’m trying to create a truncated cylinder (tapered mast) using Rhino3dm - it can be either circular or polygonal in section and I have previously used loft between two circles / polygons in a Rhino python script, along the lines of this sample. I could create two separate functions : one for cylinders which uses RevSurface and another for polygons which builds them from individual surfaces but it would be easier if loft were available - is loft available in Rhino3dm or could it be added?

dale · September 5, 2019, 3:37pm

Hi @Dancergraham,

Lofting is not part of openNURBS. Thus, it cannot be included with Rhino3dm. You can loft, however, using Compute.

– Dale

stevebaer · September 5, 2019, 4:59pm

You can use the compute client library for python found at

The function would be Brep.CreateFromLoft
https://compute-rhino3d.readthedocs.io/en/latest/Brep.html#compute_rhino3d.Brep.CreateFromLoft

Dancergraham · September 5, 2019, 5:02pm

Thanks @stevebaer and @dale. OK you’ve got me - I have pip installed compute-rhino and obtained a key. Time to start playing with compute