Why a rhinoObject does not always have a Mesh and how to create one?

@Matthieu_from_NAVINN wrote:

Hi, i'm tring to work on meshes from a list of rhinoObjects.
But for some reason, some objects return an empty mesh list with the command .getMeshes. As you can see in my code below, i've tried to figure out a way out by creating a Brep, but that does not always works. Any idea?
(Generally the problematic objects are open surfaces or blocks instances)

Dim RhinoObjMeshs As Mesh() = RhinoObj.GetMeshes(MeshType.Any)
            If RhinoObjMeshs.Count = 0 Then
                If RhinoObj.Geometry.HasBrepForm Then
                    Dim RhinoBrep As Brep = Brep.TryConvertBrep(RhinoObj.Geometry)
                    RhinoBrep.Compact()
                    Dim MyIfcFace = model.Instances.[New](Of Xbim.Ifc4.TopologyResource.IfcFace)()
                    Dim params As New Rhino.Geometry.MeshingParameters()
                    params.ComputeCurvature = False
                    params.GridAmplification = 0.5
                    RhinoObjMeshs = Mesh.CreateFromBrep(RhinoBrep, params)
                Else
                    RhinoApp.WriteLine("No BRep form: " & RhinoObj.Id.ToString)
                End If
            End If

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