message: Seems to fix the test
diff: @@ -660,7 +660,6 @@ namespace RINGMesh {
  for( index_t id : possible_v0_id ) {
  if( mesh.vertex_index_in_polygon( p, id ) != NO_ID ) {
  v0_id = id;
  - break;
  }
  }
  ringmesh_assert( v0_id != NO_ID );
  @@ -765,7 +764,11 @@ namespace RINGMesh {
  LineGeometryFromGeoModelSurfaces< DIMENSION > line_computer( geomodel_,
  options_.compute_regions_brep );
  - while( line_computer.compute_next_line_geometry() ) {
  + bool new_line_was_built = true;
  + while( new_line_was_built ) {
  + new_line_was_built = line_computer.compute_next_line_geometry();
  +
  +// while( line_computer.compute_next_line_geometry() ) {
  LineDefinition line = line_computer.current_line();
  if( line.is_closed() ) {
  