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comparison python/moving.py @ 243:e0988a8ace0c

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started adapting and moving to other modules Mohamed's work
author Nicolas Saunier <nicolas.saunier@polymtl.ca>
date Mon, 16 Jul 2012 04:57:35 -0400
parents c31722fcc9de
children 5027c174ab90
comparison
equal deleted inserted replaced
242:942455aff829 243:e0988a8ace0c
506 at which the object passes from one side of the segment to the other 506 at which the object passes from one side of the segment to the other
507 empty list if there is no crossing''' 507 empty list if there is no crossing'''
508 indices = self.positions.getIntersections(p1, p2) 508 indices = self.positions.getIntersections(p1, p2)
509 return [t+self.getFirstInstant() for t in indices] 509 return [t+self.getFirstInstant() for t in indices]
510 510
511 def predictPosition(self, instant, deltaT, externalAcceleration = Point(0,0)):
512 '''Predicts the position of object at instant+deltaT,
513 at constant speed'''
514 return self.getPositionAtInstant(instant) + self.getVelocityAtInstant(instant).multiply(deltaT) + externalAcceleration.multiply(deltaT**2)
515
511 @staticmethod 516 @staticmethod
512 def collisionCourseDotProduct(movingObject1, movingObject2, instant): 517 def collisionCourseDotProduct(movingObject1, movingObject2, instant):
513 'A positive result indicates that the road users are getting closer' 518 'A positive result indicates that the road users are getting closer'
514 deltap = movingObject1.getPositionAtInstant(instant)-movingObject2.getPositionAtInstant(instant) 519 deltap = movingObject1.getPositionAtInstant(instant)-movingObject2.getPositionAtInstant(instant)
515 deltav = movingObject2.getVelocityAtInstant(instant)-movingObject1.getVelocityAtInstant(instant) 520 deltav = movingObject2.getVelocityAtInstant(instant)-movingObject1.getVelocityAtInstant(instant)