def test_stl_importer_happy_topology():
r"""import iges file containing a box and test topology"""
# binary STL
importer = StlImporter(path_from_file(__file__, "./models_in/box_binary.stl"))
topo = Topo(importer.shape)
# assert len(topo.solids()) == 1
assert len([i for i in topo.shells()]) == 1
assert topo.shells().next().Closed() is True # direct method on TopoDS_Shell
assert len([i for i in topo.faces()]) == 108
assert len([i for i in topo.edges()]) == 162
# ascii STL
importer = StlImporter(path_from_file(__file__, "./models_in/box_ascii.stl"))
topo = Topo(importer.shape)
# assert len(topo.solids) == 1
assert len([i for i in topo.shells()]) == 1
assert topo.shells().next().Closed() is True
assert len([i for i in topo.faces()]) == 108
assert len([i for i in topo.edges()]) == 162
def test_stl_importer_2_boxes():
r"""Import an iges file containing 2 distinct boxes and test topology
Notes
-----
This shows the current limitations of the IgesImporter as 2 boxes cannot be distinguished from one another
"""
# binary STL
importer = StlImporter(path_from_file(__file__, "./models_in/2_boxes_binary.stl"))
topo = Topo(importer.shape)
assert len([i for i in topo.shells()]) == 2
assert topo.shells().next().Closed() is True
assert [i for i in topo.shells()][1].Closed() is True
assert topo.number_of_faces() == 108 * 2
assert topo.number_of_edges() == 162 * 2
# ascii STL
importer = StlImporter(path_from_file(__file__, "./models_in/2_boxes_ascii.stl"))
topo = Topo(importer.shape)
assert len([i for i in topo.shells()]) == 2
assert topo.shells().next().Closed() is True
assert [i for i in topo.shells()][1].Closed() is True
assert topo.number_of_faces() == 108 * 2
assert topo.number_of_edges() == 162 * 2
