Mesh: Data conversion failed from Mesh to Brep

Hey there, I am trying to analyze my site ponding and water flow path. However, two main issues are occupied: first, when I use mesh brep, the failed note said that data conversion failed from mesh to brep. Then is my output endpoint, idk why the polyline output remains me zero length segment was collapsed to create a valid polyline.

I attached my rhino file and gh under it. The grasshopper is a new thing to me. I am just beginning. Could you help me to figure it out? Thank you.


雨水径流.gh (370.4 KB)
mesh only.3dm (4.0 MB)

Welcome William -

When you use 3rd party plug-ins, please make sure to mention that when posting so that people that don’t have those plug-ins don’t waste their time looking into your question.

If you want as many users as possible to be able to help you, it’s best to not use any plug-ins. Or you can internalize data downstream of those that you need to have.

Also, please internalize the Rhino geometry in the Grasshopper file. In this case, there are a few empty Mesh parameters in your Grasshopper definition and there are two meshes in the Rhino file. Are both of them used? In which component?

-wim

Hey, Wim, thank you for your notice.
I reuploaded my files and other plug-ins. Thank you.

mesh only.3dm (5.1 MB)
雨水径流.gh (56.1 KB)
meshedit.gha (62.5 KB)
anemone1.gha (175 KB)
Mosquito-2.0_-Jan-2026.zip (6.7 MB)