In Rhino screen there are 5 faces of the mesh but why the faces shows 16 faces on the grasshopper’s panel？Could anyone explain it？Because I want to use hexagon mesh to be the form finding basement. @DanielPiker
triremesh.gh (7.9 KB)
A mesh face is usually a triangle. What you see on your screenshot are ngons.
When you bake it and run _DeleteMeshNgons, the result looks like this:
Got it, but can it display the “Count of Closed Meshes” in Grasshopper? And why is a planar NGon automatically subdivided into multiple triangles?
The dual creates a perpendicular edge between two adjacent vertices. I think that the desired output of the dual is an ngon. Using just native tools, the Face Boundaries component shows you the number of closed polylines.
triremesh.gh (20.1 KB)
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Btw, the Tangent Circles component in the Kangaroo tab has a dual output that outputs polylines…
I see, it seems an extra step is required. Thank you.
To add to this - Ngons are internally always just groups of triangular/quad mesh faces. There is no way in Rhino to create actual faces with more than 4 sides. The face count you see when hovering over a mesh parameter component in Grasshopper reflects this. As Martin says - the Face Boundaries component can be an easy way to get the Ngon count.
https://developer.rhino3d.com/api/rhinocommon/rhino.geometry.mesh/ngons
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