def test_planar(k5_network):
if compas.IPY:
return
from compas.datastructures import network_is_planar
k5_network.delete_edge('a', 'b') # Delete (a, b) edge to make K5 planar
assert network_is_planar(k5_network) is True
def test_non_planar(k5_network):
try:
import planarity # noqa: F401
except ImportError:
return
from compas.datastructures import network_is_planar
assert network_is_planar(k5_network) is not True
def test_planar(k5_network):
try:
import planarity # noqa: F401
except ImportError:
return
from compas.datastructures import network_is_planar
k5_network.delete_edge('a', 'b') # Delete (a, b) edge to make K5 planar
assert network_is_planar(k5_network) is True
def network_is_planar_embedding(network):
"""Verify that a network is embedded in the plane without crossing edges.
Parameters
----------
network : Network
A network object.
Returns
-------
bool
True if the network is embedded in the plane without crossing edges.
Fase otherwise.
"""
return (network_is_planar(network) and network_is_xy(network)
and not network_is_crossed(network))
def test_planar(k5_network):
k5_network.delete_edge('a', 'b') # Delete (a, b) edge to make K5 planar
assert network_is_planar(k5_network) is True
def test_non_planar(k5_network):
assert network_is_planar(k5_network) is not True
def is_planar(self, data):
network = Network.from_data(data)
return network_is_planar(network)
def test_non_planar(k5_network):
if compas.IPY:
return
from compas.datastructures import network_is_planar
assert network_is_planar(k5_network) is not True
# ==============================================================================
if __name__ == '__main__':
import compas
from compas.datastructures import Network
from compas.datastructures import network_is_planar
from compas.datastructures import network_find_crossings
from compas.plotters import NetworkPlotter
network = Network.from_obj(compas.get('lines.obj'))
network.add_edge(6, 15)
if not network_is_planar(network):
crossings = network_find_crossings(network)
else:
crossings = []
print(crossings)
plotter = NetworkPlotter(network)
plotter.draw_vertices(radius=0.15,
text={key: key
for key in network.vertices()})
plotter.draw_edges(
color={edge: '#ff0000'
for edges in crossings for edge in edges})
