Strange mesh issue

I’m trying to mesh a poly surface, but the mesh result seem super weird, far from the original look.

Checked the poly surface seems nothing wrong with it.

The mesh gets stranger when I use higher polygon setting for mesh

If I set fewer polygon setting, the mesh result seem more reasonable.

Wonder if it is a bug for rhino 7 on M1 chip

Hello- please try `DivideAlongCreases’ > SplitAtTangents=Yes on the object, then mesh it.


Thanks for the speedy reply… yeah… it fixed it… I need to remember that… thanks a lot…

Hello- the problem for the mesher arises where a single surface is only tangent continuous internally - meshing is happier of the surface is either curvature coibntinuous between spans or split into multiple faces at these locations.