def set_dynamic_zeropoint(network: STN):
network = network.copy()
largish = 1000000.0
if ZERO_ID not in network.verts:
network.addVertex(ZERO_ID)
adjacent_events = set(network.getAdjacent(ZERO_ID))
for event in network.verts:
if (event not in adjacent_events) and (event != ZERO_ID):
network.addEdge(ZERO_ID, event, 0.0, largish)
return network
def find_bounds(network: STN) -> dict:
# Add zero timepoint
if ZERO_ID not in network.verts:
network.addVertex(ZERO_ID)
# Add bounds relative to zero timepoint
adjacent_to_zero = set(network.getAdjacent(ZERO_ID))
events = network.verts.keys()
bounds = {}
for event in events:
if (event != ZERO_ID) and (event not in adjacent_to_zero):
return 0
else:
return 0
# To make sure zero timepoint starts first
bounds[ZERO_ID] = (-1.0, 0.0)
return bounds