Hi Yanus3D,

re:
> - A massive number of LW layers (if the object is heavy, it can exceed 50 layers) is problematic.
> I suggest forcing the exporter to include only ONE LAYER (the first in the list in LW).

I'm not sure if I'm understanding this one yet because of the different terminology in each app.

MOI does not have anything called layers.

Rhino has something called Layers, when you open a .3dm file from Rhino into MOI, the layer list in Rhino will become the styles list in MOI.

When you export from MOI into a polygon mesh format for rendering, the styles list in MOI will become the materials list in the rendering program.

In LWO format there is a thing called Layers ("LAYR" chunk) where geometry like vertices and faces is stored.

In Rhino and MOI the thing that contains geometry is called an "Object" which can have an object name.

When you export from MOI to LWO, the object list and object names in MOI will become a list of 'LAYR' chunks in the .lwo file.

There is an option in the MOI export settings that controls how objects in MOI with the same object name are written. That's under Options > Import/Export > "Combine same named objects" checkbox (at the top, it is used by multiple formats).

If "Combine same named objects" is set, then every object in MOI that has the same name (other than a blank name) will combine together into one 'LAYR' chunk in the LWO file.

So if you want only one 'LAYR' chunk in the LWO file, you should be able to do that now by setting the same name on all objects in MOI before doing the export and also have "Combine same named objects" enabled.


re:
> - Merge points if possible. The exported LWO model from MoI has exploded polygons, which is problematic. (not sure this possible)

To get a watertight mesh the edge in the CAD object must be a joined edge shared by 2 faces. Then also the "Weld vertices along edges" controls whether vertices for each face will be separate but stacked on top of each other or whether they will reference the same vertex.

- Michael