will be closed after triangle mesh slicing.
The value is set to 0.049 by default, which corresponds to the hard
coded default in Slic3r-1.41.3.
See issues #520#820#1029#1364 for the reference of why we need
the parameter for being able to print some specific models.
Lazy "Place on face" gizmo update.
Caching of MeshObject::raw_mesh_bounding_box() for the object size display.
ModelObject::bounding_box(), raw_mesh_bounding_box(), full_raw_mesh_bounding_box() will not copy the mesh.
TriangleMesh::transformed_bounding_box(const Transform3d &trafo) will not copy the mesh data.
get_options_for_bundle() will not return reference to temp value
is_splittable() calls cheap mesh.has_multiple_patches()
