[C++] RhinoSdkBlend::SurfaceBlend gives inaccurate results

Rhino Developer
#1

I’m trying to get a blend between two BRep edges. I’m using the RhinoSdkBlend::SurfaceBlend function and it gives a blend, but the blend is not G2-continuous even though I gave continuity values of 2. Even worse, the edges do not match and the result cannot be joined into a polysurface.

Now, when I use the same input in the BlendSrf command, the result is G2 continuous and is matched correctly to the edges.

How to replicate the same results from C++?

#2

Hi Menno,

This is known:

https://mcneel.myjetbrains.com/youtrack/issue/RH-36086

Can you post some geometry that isn’t working for you? I want to add it to the YouTrack item.

– Dale

#3

I’m doing this in RH5 SR12. Will post geometry tomorrow.

#4

See attached, layer names should explain it all.

simple fillet.3dm (153.4 KB)

#5

Got it, thanks.

#6

I see this issue is fixed in Rhino 6, but what about Rhino 5? Will it be fixed there or only in Rhino 6?

#7

We are no longer making fixes to Rhino 5.

– Dale

#8

It’s not fixed in Rhino 6 either.