How can I create center lines of a bifurcation. I can deal with the branches, but I am stuck on the bifurcation

Grasshopper
1

Hi everyone,
As you see the bifurcation. I can create the center lines of the three branches using VU component, however, I am stuck at the bifurcation part. How should the center lines go? And how they are connected? The rhino file is attached.bifurcation.3dm (234.1 KB)
Any suggestion or ideas are appreciated!
bifurcation

2

Is this a Grasshopper or a Rhino question?

3

Sorry, I was not clear. It’s a Grasshopper question.

4

Merely asking because you didn’t upload a gh file.

The thing is, your problem is undefined. There is no obvious centre-line for the Y-joint. I image you’d get the best result if you omit the joint entirely and then just connect the three centre-lines with blend curves.

5

OK, David, I got your idea.Thanks!