As you can see, I’ve tried creating a mesh but it’s not quite complete, there’s something I can’t figure out there are 2 lines that aren’t connecting to each other in the end.
Do have a look at the definition if anyone can help!
Data tree.gh (27.5 KB)
Whatever you are doing in your definition, you are missing many triangles, not only 2 lines.
Your definition is too spread apart to bother and understand what you were trying to do, sorry 
But, see this example:
Hey, thanks! I’ll try this instead, this seems to what I had in mind!
