# numerical data
n = network.number_of_nodes()
node_index = {node: index for index, node in enumerate(network.nodes())}
fixed = list(network.nodes_where({'is_anchor': True}))
free = list(network.nodes_where({'is_anchor': False}))
fixed[:] = [node_index[node] for node in fixed]
free[:] = [node_index[node] for node in free]
edges = [(node_index[u], node_index[v]) for u, v in network.edges()]
X = network.nodes_attributes('xyz')
R = network.nodes_attributes(['rx', 'ry', 'rz'])
P = network.nodes_attributes(['px', 'py', 'pz'])
Q = network.edges_attribute('q')
# compute equilibrium
X, Q, F, L, R = dr(X, edges, fixed, P, Q)
# update network
update_network()
# visualize result
artist = CablenetArtist(network, layer="ITA20::L5::FormFinding")
fixed = list(network.nodes_where({'is_anchor': True}))
free = list(network.nodes_where({'is_anchor': False}))
# visualize dynamic process
layer = "ITA20::L5::FormFinding"
artist = NetworkArtist(network, layer=layer)
tol = 0.01
kmax = 100
update_residuals(network)
for k in range(kmax):
R = network.nodes_attributes(['rx', 'ry', 'rz'], keys=free)
res = sum(length_vector(r) for r in R)
if res < tol:
break
artist.draw_nodes(color={node: (255, 0, 0) for node in fixed})
artist.draw_edges()
draw_reactions(network, layer, (0, 255, 0))
draw_residuals(network, layer, (0, 255, 255), tol)
compas_rhino.rs.Redraw()
compas_rhino.wait()
update_geometry(network)
update_residuals(network)