Hello, I have a problem with trees. I have some surfaces grouped into 4 branches - each branch marks one of edges of a rectangle where surfaces start. Structure is **{x;y}** where x is index of curve and y is edge of a rectangle.

I know the description is messy, but heres a definition:

TREES_PROBLEM.gh (29.6 KB)

What i want to do is take each edge of each surface in each branch and “project” (in z axis) it to all other surfaces in THAT BRANCH, and split each surface afterwards. I thought of numerous ways but what i ended up doing was:

- get each surface edges
- project all curves to xy plane
- extrude lines
- find intersection between initial surfaces and extrusions.

The thing is number of items in corresponding branches are not equal between initial surfaces and extruded lines. I grafted the extrusions. As far as i understand a structure of:

**{x;y}** for surfaces and **{x;y;z}** for extrusions should create corresponding intersections - so all intersections for each surface in **{x;y}** with a corresponding **z**. In the meantime I get strange results.

I’d appreciate any help.

Thanks, have a good one.