Dear @cory.quammen @mwestphal
I know this is the wrong place to send mail.
But, the truth is, that I could not find where to send regular mail, on this Platform.
As you can see, In my Uploaded code, I have connected VTK to one of the Newest and clearest,
Open Cascade on YouTube.
Plus, How to Import .IGES .STEP files,
So an engineer can start work Directly on complex Mesh, at the same level as Solid Works!
Here in Lesson2 from YouTube.
[Lesson 2:Import .IGES .STEP files while using VTK visualization ,simple example.]
Lesson 17
[Lesson 17.1: Point Membership Classification with OpenCascade + VTK]
A problem that I solved and have a solution and will upload the solution.
[Cascade appanding -TopoDS_Shape- to -vtkAppendPolyData- or -vtkCleanPolyData- or simply convert -TopoDS_Shape- to -vtkPolyData- NOT WORKING - #3 by anon41080341]