Mercurial > hg > nsaunier > traffic-intelligence

comparison python/moving.py @ 22:169cd4679366

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made Trajectory iterable
author Nicolas Saunier <nico@confins.net>
date Fri, 04 Dec 2009 01:01:11 -0500
parents 3c4629550f5f
children 5f2921ad4f7e
comparison
equal deleted inserted replaced
21:3c4629550f5f 22:169cd4679366
85 def getLastInstant(self): 85 def getLastInstant(self):
86 return self.timeInterval.first() 86 return self.timeInterval.first()
87 87
88 class Trajectory: 88 class Trajectory:
89 '''Class for trajectories 89 '''Class for trajectories
90 i.e. a temporal sequence of positions''' 90 i.e. a temporal sequence of positions
91
92 the class is iterable.'''
91 93
92 def __init__(self, positions = None): 94 def __init__(self, positions = None):
95 # self.iterInstantNum = 0
93 self.positions = positions 96 self.positions = positions
94 97
95 def __str__(self): 98 def __str__(self):
96 return ' '.join(map(utils.printPoint, self.positions[0], self.positions[1])) 99 return ' '.join(map(utils.printPoint, self.positions[0], self.positions[1]))
100
101 def __iter__(self):
102 self.iterInstantNum = 0
103 return self
104
105 def next(self):
106 if self.iterInstantNum >= self.length():
107 self.iterInstantNum = 0
108 raise StopIteration
109 else:
110 self.iterInstantNum += 1
111 return self.getPosition(self.iterInstantNum-1)
112
113 def getPosition(self, i):
114 return [self.positions[0][i], self.positions[1][i]]
97 115
98 def addPosition(self, point): 116 def addPosition(self, point):
99 if not self.positions: 117 if not self.positions:
100 self.positions = [[point[0]],[point[1]]] 118 self.positions = [[point[0]],[point[1]]]
101 else: 119 else:
157 def getYCoordinates(self): 175 def getYCoordinates(self):
158 return self.positions.getYCoordinates() 176 return self.positions.getYCoordinates()
159 177
160 def draw(self): 178 def draw(self):
161 self.positions.draw() 179 self.positions.draw()
180
181 def getInstantPassingLane(self, p1, p2):
182 '''Returns the instant(s) the object passes from one side of the segment to the other
183 None if does not'''
184 # parallel
162 185
163 # def computeVelocities(self): 186 # def computeVelocities(self):
164 187
165 # need for a class representing the indicators, their units, how to print them in graphs... 188 # need for a class representing the indicators, their units, how to print them in graphs...
166 class TemporalIndicator: 189 class TemporalIndicator: