Hi Pilou, i should have probably said fill not solid.
One for the future maybe
" SVG does have a fill property that allows it to be animated and fade. The fill attribute can be used to define the color or any SVG paint servers like gradients or patterns used to paint the element"
With a Volume inide Moi
-Separate all
- apply the script of visibility... script: moi.geometryDatabase.selectVisible();
- Invert Selection
- Kill the selection
- Join
- Apply a subdivision
- export as OBJ Ngons /minimum polys
- Apply the convert prog wire to 3dm file with closed polylines : https://moi3d.com/resources Obj23dmWireframe converter
- Import result inside Moi
- Export as SVG