Extracted surfaces in GH from brep not behaving like regular surfaces drawn in Rhino

Grasshopper
1

Hi all, trying to figure out and fix why I can’t perform the same operations on a surface extracted from a BREP as I can for one I draw directly as a BREP. What is missing? The top script works, the bottom doesn’t.Extract and Divide Surfaces.gh (13.0 KB)

image
image1101×577 66 KB

2

That’s probably because you used Split Tree, so the “P” output would probably contain some Null values which is the component’s nature by design.

Hence, it would be better to use Clean Treeafterward, or just use List Item(with index no. 1 in this case…)instead of using Split Tree.

1 Like
3

thanks, still learning commands and tools, thanks for the List Item!