Import a valid mesh turns out mesh invalid

[Liu2 (Liu)]

do you have hundreds of these?

yes. To ensuring subsequent algorithms, this problem need to be under control.

When I used custome function to import mesh, my algorithm goes well.
but when I use Rhino to import mesh, the algorithm can not.

There are also another relative post I create:

Import invalid mesh and save its data

Hi, I meet an werid problem in RhinoCommon I drag an invalid (with non-manifold vertices and edges) triangle mesh .obj file into UI to import. when I picked it, it shows pMesh->IsValid = true. I guess Rhino did some automatic mesh cleanning during importing stage. bool SelectErrorMesh(std::shared_ptr<ON_Mesh>& outErrorMesh) { // pick mesh RhinoApp().ActiveDoc()->UnselectAll(); CRhinoGetObject go1; go1.SetCommandPrompt(L"Select Error Mesh"); go1.EnablePreSelect(FALSE); go1.S…