/usr/share/sumo/tools/sumolib/net.py is in sumo-tools 0.15.0~dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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@file net.py
@author Daniel Krajzewicz
@author Laura Bieker
@author Karol Stosiek
@author Michael Behrisch
@date 2008-03-27
@version $Id: net.py 11825 2012-02-02 07:46:23Z namdre $
This file contains a content handler for parsing sumo network xml files
and classes that represent the network.
SUMO, Simulation of Urban MObility; see http://sumo.sourceforge.net/
Copyright (C) 2008-2012 DLR (http://www.dlr.de/) and contributors
All rights reserved
"""
import os, sys
from xml.sax import saxutils, parse, handler
from copy import copy
from itertools import *
class Lane:
""" Lanes from a sumo network """
def __init__(self, edge, speed, length):
self._edge = edge
self._speed = speed
self._length = length
self._shape = []
self._outgoing = []
edge.addLane(self)
def getSpeed(self):
return self._speed
def getLength(self):
return self._length
def setShape(self, shape):
self._shape = shape
def getShape(self):
return self._shape
def getID(self):
return self._edge._id + "_" + str(self._edge._lanes.index(self))
def getEdge(self):
return self._edge
def addOutgoing(self, conn):
self._outgoing.append(conn)
class Edge:
""" Edges from a sumo network """
def __init__(self, id, fromN, toN, prio, function, name):
self._id = id
self._from = fromN
self._to = toN
self._priority = prio
fromN.addOutgoing(self)
toN.addIncoming(self)
self._lanes = []
self._speed = None
self._length = None
self._incoming = {}
self._outgoing = {}
self._shape = None
self._function = function
self._tls = None
self._name = name
def getName(self):
return self._name
def getTLS(self):
return self._tls
def addLane(self, lane):
self._lanes.append(lane)
self._speed = lane.getSpeed()
self._length = lane.getLength()
def addOutgoing(self, conn):
if conn._to not in self._outgoing:
self._outgoing[conn._to] = []
self._outgoing[conn._to].append(conn)
def _addIncoming(self, conn):
if conn._from not in self._incoming:
self._incoming[conn._from] = []
self._incoming[conn._from].append(conn)
def setShape(self, shape):
self._shape = shape
def getID(self):
return self._id
def getIncoming(self):
return self._incoming
def getOutgoing(self):
return self._outgoing
def getShape(self):
if not self._shape:
shape = []
shape.append(self._from._coord)
shape.append(self._to._coord)
return shape
return self._shape
def getSpeed(self):
return self._speed
def getLaneNumber(self):
return len(self._lanes)
def getLane(self, idx):
return self._lanes[idx]
def rebuildShape(self):
noShapes = len(self._lanes)
if noShapes%2 == 1:
self.setShape(self._lanes[int(noShapes/2)]._shape)
else:
shape = []
minLen = -1
for l in self._lanes:
if minLen==-1 or minLen>len(l.getShape()):
minLen = len(l._shape)
for i in range(0, minLen):
x = 0.
y = 0.
for j in range(0, len(self._lanes)):
x = x + self._lanes[j]._shape[i][0]
y = y + self._lanes[j]._shape[i][1]
x = x / float(len(self._lanes))
y = y / float(len(self._lanes))
shape.append( [ x, y ] )
self.setShape(shape)
def getLength(self):
return self._lanes[0].getLength()
def setTLS(self, tls):
self._tls = tls
class Node:
""" Nodes from a sumo network """
def __init__(self, id, coord, incLanes):
self._id = id
self._coord = coord
self._incoming = []
self._outgoing = []
self._foes = {}
self._prohibits = {}
self._incLanes = incLanes
def addOutgoing(self, edge):
self._outgoing.append(edge)
def getOutgoing(self):
return self._outgoing
def addIncoming(self, edge):
self._incoming.append(edge)
def getIncoming(self):
return self._incoming
def setFoes(self, index, foes, prohibits):
self._foes[index] = foes
self._prohibits[index] = prohibits
def areFoes(self, link1, link2):
return self._foes[link1][len(self._foes[link1]) - link2 - 1] == '1'
def getLinkIndex(self, link):
ret = 0
for lid in self._incLanes:
(e, l) = lid.split("_")
lane = None
for et in self._incoming:
for l in et._lanes:
if l==link[0]:
lane = l
if l[0]==link[0] and l[1]==link[1]:
return ret
ret += 1
return -1
def forbids(self, possProhibitor, possProhibited):
possProhibitorIndex = self.getLinkIndex(possProhibitor)
possProhibitedIndex = self.getLinkIndex(possProhibited)
if possProhibitorIndex < 0 or possProhibitedIndex < 0:
return False
ps = self._prohibits[possProhibitedIndex]
return ps[-(possProhibitorIndex-1)]=='1'
class Connection:
"""edge connection for a sumo network"""
def __init__(self, fromEdge, toEdge, fromLane, toLane, direction, tls, tllink):
self._from = fromEdge
self._to = toEdge
self._fromLane = fromLane
self._toLane = toLane
self._tls = tls
self._tlLink = tllink
class TLS:
"""Traffic Light Signal for a sumo network"""
def __init__(self, id):
self._id = id
self._connections = []
self._maxConnectionNo = -1
self._programs = {}
def addConnection(self, inLane, outLane, linkNo):
self._connections.append( [inLane, outLane, linkNo] )
if linkNo>self._maxConnectionNo:
self._maxConnectionNo = linkNo
def getConnections(self):
return self._connections
def getID(self):
return self._id
def getLinks(self):
links = {}
for connection in self._connections:
if connection[2] not in links:
links[connection[2]] = []
links[connection[2]].append(connection)
return links
def getEdges(self):
edges = set()
for c in self._connections:
edges.add(c[0].getEdge())
return edges
def addProgram(self, program):
self._programs[program._id] = program
class TLSProgram:
def __init__(self, id, offset, type):
self._id = id
self._type = type
self._offset = offset
self._phases = []
def addPhase(self, state, duration):
self._phases.append( (state, duration) )
class Roundabout:
def __init__(self, nodes):
self._nodes = nodes
def getNodes(self):
return self._nodes
class Net:
"""The whole sumo network."""
def __init__(self):
self._id2node = {}
self._id2edge = {}
self._id2tls = {}
self._nodes = []
self._edges = []
self._tlss = []
self._ranges = [ [10000, -10000], [10000, -10000] ]
self._roundabouts = []
def addNode(self, id, coord=None, incLanes=None):
if id not in self._id2node:
node = Node(id, coord, incLanes)
self._nodes.append(node)
self._id2node[id] = node
self.setAdditionalNodeInfo(self._id2node[id], coord, incLanes)
return self._id2node[id]
def setAdditionalNodeInfo(self, node, coord, incLanes):
if coord!=None and node._coord==None:
node._coord = coord
self._ranges[0][0] = min(self._ranges[0][0], coord[0])
self._ranges[0][1] = max(self._ranges[0][1], coord[0])
self._ranges[1][0] = min(self._ranges[1][0], coord[1])
self._ranges[1][1] = max(self._ranges[1][1], coord[1])
if incLanes!=None and node._incLanes==None:
node._incLanes = incLanes
def addEdge(self, id, fromID, toID, prio, function, name):
if id not in self._id2edge:
fromN = self.addNode(fromID)
toN = self.addNode(toID)
edge = Edge(id, fromN, toN, prio, function, name)
self._edges.append(edge)
self._id2edge[id] = edge
return self._id2edge[id]
def addLane(self, edge, speed, length):
return Lane(edge, speed, length)
def addRoundabout(self, nodes):
roundabout = Roundabout(nodes)
self._roundabouts.append(roundabout)
return roundabout
def addConnection(self, fromEdge, toEdge, fromlane, tolane, direction, tls, tllink):
conn = Connection(fromEdge, toEdge, fromlane, tolane, direction, tls, tllink)
fromEdge.addOutgoing(conn)
fromlane.addOutgoing(conn)
toEdge._addIncoming(conn)
def getEdges(self):
return self._edges
def getRoundabouts(self):
return self._roundabouts
def hasEdge(self, id):
return id in self._id2edge
def getEdge(self, id):
return self._id2edge[id]
def getNode(self, id):
return self._id2node[id]
def getNodes(self):
return self._nodes
def getTLSSecure(self, tlid):
if tlid in self._id2tls:
tls = self._id2tls[tlid]
else:
tls = TLS(tlid)
self._id2tls[tlid] = tls
self._tlss.append(tls)
return tls
def addTLS(self, tlid, inLane, outLane, linkNo):
tls = self.getTLSSecure(tlid)
tls.addConnection(inLane, outLane, linkNo)
return tls
def addTLSProgram(self, tlid, programID, offset, type):
tls = self.getTLSSecure(tlid)
program = TLSProgram(programID, offset, type)
tls.addProgram(program)
return program
def setFoes(self, junctionID, index, foes, prohibits):
self._id2node[junctionID].setFoes(index, foes, prohibits)
def forbids(self, possProhibitor, possProhibited):
return possProhibitor[0].getEdge()._to.forbids(possProhibitor, possProhibited)
def getDownstreamEdges(self, edge, distance, stopOnTLS):
ret = []
seen = set()
toProc = []
toProc.append( [edge, 0, [] ] )
while not len(toProc)==0:
ie = toProc.pop()
if ie[0] in seen:
continue
seen.add(ie[0])
if ie[1] + ie[0].getLength() >= distance:
ret.append( [ie[0], ie[0].getLength()+ie[1]-distance, ie[2], False] )
continue
if len(ie[0]._incoming)==0:
ret.append( [ie[0], ie[0].getLength()+ie[1], ie[2], True] )
continue
mn = []
hadTLS = False
for ci in ie[0]._incoming:
if ci not in seen:
prev = copy(ie[2])
if stopOnTLS and ci._tls and ci!=edge and not hadTLS:
ret.append( [ie[0], ie[1], prev, True ] )
hadTLS = True
else:
prev.append(ie[0])
mn.append( [ci, ie[0].getLength()+ie[1], prev ] )
if not hadTLS:
toProc.extend(mn)
return ret
class NetReader(handler.ContentHandler):
"""Reads a network, storing the edge geometries, lane numbers and max. speeds"""
def __init__(self, **others):
self._net = others.get('net', Net())
self._currentEdge = None
self._currentNode = None
self._currentLane = None
self._currentShape = ""
self._withPhases = others.get('withPrograms', False)
self._withConnections = others.get('withConnections', True)
self._withFoes = others.get('withFoes', True)
def startElement(self, name, attrs):
if name == 'edge':
if not attrs.has_key('function') or attrs['function'] != 'internal':
prio = -1
if attrs.has_key('priority'):
prio = int(attrs['priority'])
function = ""
if attrs.has_key('function'):
function = attrs['function']
name = ""
if attrs.has_key('name'):
name = attrs['name']
self._currentEdge = self._net.addEdge(attrs['id'],
attrs['from'], attrs['to'], prio, function, name)
else:
self._currentEdge = None
if name == 'lane' and self._currentEdge!=None:
self._currentLane = self._net.addLane(self._currentEdge, float(attrs['speed']), float(attrs['length']))
if attrs.has_key('shape'):
self._currentShape = attrs['shape'] # deprecated: at some time, this is mandatory
else:
self._currentShape = ""
if name == 'junction':
if attrs['id'][0]!=':':
self._currentNode = self._net.addNode(attrs['id'], [ float(attrs['x']), float(attrs['y']) ], attrs['incLanes'].split(" ") )
if name == 'succ' and self._withConnections: # deprecated
if attrs['edge'][0]!=':':
self._currentEdge = self._net.getEdge(attrs['edge'])
self._currentLane = attrs['lane']
self._currentLane = int(self._currentLane[self._currentLane.rfind('_')+1:])
else:
self._currentEdge = None
if name == 'succlane' and self._withConnections: # deprecated
lid = attrs['lane']
if lid[0]!=':' and lid!="SUMO_NO_DESTINATION" and self._currentEdge:
connected = self._net.getEdge(lid[:lid.rfind('_')])
tolane = int(lid[lid.rfind('_')+1:])
if attrs.has_key('tl') and attrs['tl']!="":
tl = attrs['tl']
tllink = int(attrs['linkIdx'])
tlid = attrs['tl']
toEdge = self._net.getEdge(lid[:lid.rfind('_')])
tolane2 = toEdge._lanes[tolane]
tls = self._net.addTLS(tlid, self._currentEdge._lanes[self._currentLane], tolane2, tllink)
self._currentEdge.setTLS(tls)
else:
tl = ""
tllink = -1
toEdge = self._net.getEdge(lid[:lid.rfind('_')])
tolane = toEdge._lanes[tolane]
self._net.addConnection(self._currentEdge, connected, self._currentEdge._lanes[self._currentLane], tolane, attrs['dir'], tl, tllink)
if name == 'connection' and self._withConnections and attrs['from'][0] != ":":
fromEdge = self._net.getEdge(attrs['from'])
toEdge = self._net.getEdge(attrs['to'])
fromLane = fromEdge.getLane(int(attrs['fromLane']))
toLane = toEdge.getLane(int(attrs['toLane']))
if attrs.has_key('tl') and attrs['tl']!="":
tl = attrs['tl']
tllink = int(attrs['linkIndex'])
tls = self._net.addTLS(tl, fromLane, toLane, tllink)
fromEdge.setTLS(tls)
else:
tl = ""
tllink = -1
self._net.addConnection(fromEdge, toEdge, fromLane, toLane, attrs['dir'], tl, tllink)
if self._withFoes and (name=='ROWLogic' or name=='row-logic'): # 'row-logic' is deprecated!!!
self._currentNode = attrs['id']
if name == 'logicitem' and self._withFoes: # deprecated
self._net.setFoes(self._currentNode, int(attrs['request']), attrs["foes"], attrs["response"])
if name == 'request' and self._withFoes:
self._currentNode.setFoes(int(attrs['index']), attrs["foes"], attrs["response"])
if self._withPhases and (name=='tlLogic' or name=='tl-logic'): # tl-logic is deprecated!!!
self._currentProgram = self._net.addTLSProgram(attrs['id'], attrs['programID'], int(attrs['offset']), attrs['type'])
if self._withPhases and name=='phase':
self._currentProgram.addPhase(attrs['state'], int(attrs['duration']))
if name == 'roundabout':
self._net.addRoundabout(attrs['nodes'].split())
def characters(self, content):
if self._currentLane!=None:
self._currentShape = self._currentShape + content
def endElement(self, name):
if name == 'lane' and self._currentLane:
cshape = []
es = self._currentShape.split(" ")
for e in es:
p = e.split(",")
cshape.append((float(p[0]), float(p[1])))
self._currentLane.setShape(cshape)
self._currentLane = None
self._currentShape = ""
if name == 'edge' and self._currentEdge:
self._currentEdge.rebuildShape();
if name == 'edge':
self._currentEdge = None
if name=='ROWLogic' or name=='row-logic': # 'row-logic' is deprecated!!!
self._haveROWLogic = False
if self._withPhases and (name=='tlLogic' or name=='tl-logic'): # tl-logic is deprecated!!!
self._currentProgram = None
def getNet(self):
return self._net
def readNet(filename, **others):
netreader = NetReader(**others)
try:
parse(filename, netreader)
except KeyError:
print >> sys.stderr, "Please mind that the network format has changed in 0.13.0, you may need to update your network!"
raise
return netreader.getNet()
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