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comparison python/moving.py @ 663:65a867942eee

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modified concatenate to take into account features if available
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Tue, 19 May 2015 16:58:26 +0200
parents 72174e66aba5
children 455f9b93819c
comparison
equal deleted inserted replaced
662:72174e66aba5 663:65a867942eee
1008 newNum = num 1008 newNum = num
1009 newTimeInterval = TimeInterval.union(obj1.getTimeInterval(), obj2.getTimeInterval()) 1009 newTimeInterval = TimeInterval.union(obj1.getTimeInterval(), obj2.getTimeInterval())
1010 # positions 1010 # positions
1011 positions = Trajectory() 1011 positions = Trajectory()
1012 for t in newTimeInterval: 1012 for t in newTimeInterval:
1013 nTotal = 0.
1013 p = Point(0.,0.) 1014 p = Point(0.,0.)
1014 n = 0. 1015 for obj in [obj1, obj2]:
1015 if obj1.existsAtInstant(t): 1016 if obj.existsAtInstant(t):
1016 p += obj1.getPositionAtInstant(t) 1017 if obj.hasFeatures():
1017 n += 1. 1018 n = len([f for f in obj.getFeatures() if f.existsAtInstant(t)])
1018 if obj2.existsAtInstant(t): 1019 else:
1019 p += obj2.getPositionAtInstant(t) 1020 n = 1.
1020 n += 1. 1021 p += obj.getPositionAtInstant(t).multiply(n)
1021 assert n>0, 'there should be at least one point for each instant' 1022 nTotal += n
1022 positions.addPosition(p.divide(n)) 1023 assert nTotal>0, 'there should be at least one point for each instant'
1024 positions.addPosition(p.divide(nTotal))
1023 # velocities: if any 1025 # velocities: if any
1024 if hasattr(obj1, 'velocities') and hasattr(obj2, 'velocities'): 1026 if hasattr(obj1, 'velocities') and hasattr(obj2, 'velocities'):
1025 velocities = Trajectory() 1027 velocities = Trajectory()
1026 for t in newTimeInterval: 1028 for t in newTimeInterval:
1029 nTotal = 0.
1027 p = Point(0.,0.) 1030 p = Point(0.,0.)
1028 n = 0. 1031 for obj in [obj1, obj2]:
1029 if obj1.existsAtInstant(t): 1032 if obj.existsAtInstant(t):
1030 p += obj1.getVelocityAtInstant(t) 1033 if obj.hasFeatures():
1031 n += 1. 1034 n = len([f for f in obj.getFeatures() if f.existsAtInstant(t)])
1032 if obj2.existsAtInstant(t): 1035 else:
1033 p += obj2.getVelocityAtInstant(t) 1036 n = 1.
1034 n += 1. 1037 p += obj.getVelocityAtInstant(t).multiply(n)
1038 nTotal += n
1035 assert n>0, 'there should be at least one point for each instant' 1039 assert n>0, 'there should be at least one point for each instant'
1036 velocities.addPosition(p.divide(n)) 1040 velocities.addPosition(p.divide(nTotal))
1037 else: 1041 else:
1038 velocities = None 1042 velocities = None
1039 # TODO object envelop (polygon) 1043 # TODO object envelop (polygon)
1040 # user type 1044 # user type
1041 if obj1.getUserType() != obj2.getUserType(): 1045 if obj1.getUserType() != obj2.getUserType():
1042 print('The two moving objects have different user types: obj1 {} obj2 {}'.format(userTypeNames[obj1.getUserType()], userTypeNames[obj2.getUserType()])) 1046 print('The two moving objects have different user types: obj1 {} obj2 {}'.format(userTypeNames[obj1.getUserType()], userTypeNames[obj2.getUserType()]))
1043 1047
1044 return MovingObject(newNum, newTimeInterval, positions, velocities, userType = obj1.getUserType()) 1048 newObject = MovingObject(newNum, newTimeInterval, positions, velocities, userType = obj1.getUserType())
1049 if obj1.hasFeatures() and obj2.hasFeatures():
1050 newObject.features = obj1.getFeatures()+obj2.getFeatures()
1051 return newObject
1045 1052
1046 def getObjectInTimeInterval(self, inter): 1053 def getObjectInTimeInterval(self, inter):
1047 '''Returns a new object extracted from self, 1054 '''Returns a new object extracted from self,
1048 restricted to time interval inter''' 1055 restricted to time interval inter'''
1049 intersection = TimeInterval.intersection(inter, self.getTimeInterval()) 1056 intersection = TimeInterval.intersection(inter, self.getTimeInterval())