def __init__(self, laws, initialParticles=[], initialTick=0):
"""x.__init__(...) initializes x; see x.__class__.__doc__ for signature"""
self.indexer = SpatialIndexer(laws.maxInteractRadius)
self.laws = laws
self.particles = []
self.tick = initialTick
self.particleDict = {}
self.add(*initialParticles)
def __init__(self, laws, initialParticles=[], initialTick=0):
"""Initialise the particle system.
laws = laws object
initialParticles = list of particles
initialTick = start value for tick counter
"""
self.indexer = SpatialIndexer(laws.maxInteractRadius)
self.laws = laws
self.particles = []
self.tick = initialTick
self.particleDict = {}
self.add(*initialParticles)
def __init__(self, laws, initialParticles = [], initialTick = 0):
"""x.__init__(...) initializes x; see x.__class__.__doc__ for signature"""
self.indexer = SpatialIndexer(laws.maxInteractRadius)
self.laws = laws
self.particles = []
self.tick = initialTick
self.particleDict = {}
self.add(*initialParticles)
def __init__(self, laws, initialParticles = [], initialTick = 0):
"""Initialise the particle system.
laws = laws object
initialParticles = list of particles
initialTick = start value for tick counter
"""
self.indexer = SpatialIndexer(laws.maxInteractRadius)
self.laws = laws
self.particles = []
self.tick = initialTick
self.particleDict = {}
self.add(*initialParticles)
class ParticleSystem(object):
"""System of particles.
Maintains the set of particles and runs the physics simulation over them
the specified laws.
"""
def __init__(self, laws, initialParticles=[], initialTick=0):
"""Initialise the particle system.
laws = laws object
initialParticles = list of particles
initialTick = start value for tick counter
"""
self.indexer = SpatialIndexer(laws.maxInteractRadius)
self.laws = laws
self.particles = []
self.tick = initialTick
self.particleDict = {}
self.add(*initialParticles)
def add(self, *newParticles):
"""Add the specified particle(s) into the system"""
self.particles.extend(newParticles)
for p in newParticles:
self.particleDict[p.ID] = p
self.indexer.updateLoc(*newParticles)
def remove(self, *oldParticles):
"""Remove the specified particle(s) from the system.
Note that this method does not destroy bonds from other particles to these ones.
"""
for particle in oldParticles:
self.particles.remove(particle)
del self.particleDict[particle.ID]
self.indexer.remove(*oldParticles)
def removeByID(self, *ids):
"""Remove particle(s) as specified by id(s) from the system.
Note that this method does not destroy bonds from other particles to these ones.
"""
particles = [self.particleDict[id] for id in ids]
self.remove(*particles)
def updateLoc(self, *particles):
"""Notify this physics system that the specified particle(s)
have changed position.
Must be called if you change a particle's position,
before calling run().
"""
self.indexer.updateLoc(*particles)
def withinRadius(self, centre, radius, filter=(lambda particle: True)):
"""Returns a list of zero or more (particle, distSquared) tuples,
representing those particles within radius distance of the
specified centre coords.
distance-squared from the centre coords is returned too to negate
any need you may have to calculate it again yourself.
You can specify a filter function that takes a candidate particle
as an argument and should return True if it is to be included
(if it is within the radius, of course). This is to allow efficient
pre-filtering of the particles before the distance test is done.
"""
return self.indexer.withinRadius(centre, radius, filter)
def run(self, cycles=1):
"""Run the simulation for a given number of cycles"""
_indexer = self.indexer
_laws = self.laws
while cycles > 0:
cycles -= 1
self.tick += 1
_tick = self.tick
for p in self.particles:
p.doInteractions(_indexer, _laws, _tick)
for p in self.particles:
p.update(_laws)
_indexer.updateAll()
class ParticleSystem(object):
"""\
ParticleSystem(laws[,initialParticles][,initialTick]) -> new ParticleSystem object
Discrete time simulator for a system of particles.
Keyword arguments:
- initialParticles -- list of particles (default=[])
- initialTick -- start value of the time 'tick' count (default=0)
"""
def __init__(self, laws, initialParticles = [], initialTick = 0):
"""x.__init__(...) initializes x; see x.__class__.__doc__ for signature"""
self.indexer = SpatialIndexer(laws.maxInteractRadius)
self.laws = laws
self.particles = []
self.tick = initialTick
self.particleDict = {}
self.add(*initialParticles)
def add(self, *newParticles):
"""Add the specified particle(s) into the system"""
self.particles.extend(newParticles)
for p in newParticles:
self.particleDict[p.ID] = p
self.indexer.updateLoc(*newParticles)
def remove(self, *oldParticles):
"""\
Remove the specified particle(s) from the system.
Note that this method does not destroy bonds from other particles to
these ones.
"""
for particle in oldParticles:
self.particles.remove(particle)
del self.particleDict[particle.ID]
self.indexer.remove(*oldParticles)
def removeByID(self, *ids):
"""\
Remove particle(s) as specified by id(s) from the system.
Note that this method does not destroy bonds from other particles to
these ones.
"""
particles = [self.particleDict[id] for id in ids]
self.remove( *particles )
def updateLoc(self, *particles):
"""\
Notify this physics system that the specified particle(s)
have changed position.
Must be called if you change a particle's position,
before calling run().
"""
self.indexer.updateLoc(*particles)
def withinRadius(self, centre, radius, filter=(lambda particle:True)):
"""\
withinRadius(centre,radius[,filter]) -> list of (particle,distSquared)
Returns a list of zero or more (particle,distSquared) tuples. The
particles listed are those within the specified radius of the specified
centre point, and that passed the (optional) filter function:
filter(particle) -> True if the particle is to be included in the list
"""
return self.indexer.withinRadius(centre, radius, filter)
def run(self, cycles = 1):
"""Run the simulation for a given number of cycles (default=1)"""
# optimisation to speed up access to these functions:
_indexer = self.indexer
_laws = self.laws
while cycles > 0:
cycles -= 1
self.tick += 1
_tick = self.tick
for p in self.particles:
p.doInteractions(_indexer, _laws, _tick)
for p in self.particles:
p.update(_laws)
_indexer.updateAll()
class ParticleSystem(object):
"""System of particles.
Maintains the set of particles and runs the physics simulation over them
the specified laws.
"""
def __init__(self, laws, initialParticles = [], initialTick = 0):
"""Initialise the particle system.
laws = laws object
initialParticles = list of particles
initialTick = start value for tick counter
"""
self.indexer = SpatialIndexer(laws.maxInteractRadius)
self.laws = laws
self.particles = []
self.tick = initialTick
self.particleDict = {}
self.add(*initialParticles)
def add(self, *newParticles):
"""Add the specified particle(s) into the system"""
self.particles.extend(newParticles)
for p in newParticles:
self.particleDict[p.ID] = p
self.indexer.updateLoc(*newParticles)
def remove(self, *oldParticles):
"""Remove the specified particle(s) from the system.
Note that this method does not destroy bonds from other particles to these ones.
"""
for particle in oldParticles:
self.particles.remove(particle)
del self.particleDict[particle.ID]
self.indexer.remove(*oldParticles)
def removeByID(self, *ids):
"""Remove particle(s) as specified by id(s) from the system.
Note that this method does not destroy bonds from other particles to these ones.
"""
particles = [self.particleDict[id] for id in ids]
self.remove( *particles )
def updateLoc(self, *particles):
"""Notify this physics system that the specified particle(s)
have changed position.
Must be called if you change a particle's position,
before calling run().
"""
self.indexer.updateLoc(*particles)
def withinRadius(self, centre, radius, filter=(lambda particle:True)):
"""Returns a list of zero or more (particle, distSquared) tuples,
representing those particles within radius distance of the
specified centre coords.
distance-squared from the centre coords is returned too to negate
any need you may have to calculate it again yourself.
You can specify a filter function that takes a candidate particle
as an argument and should return True if it is to be included
(if it is within the radius, of course). This is to allow efficient
pre-filtering of the particles before the distance test is done.
"""
return self.indexer.withinRadius(centre, radius, filter)
def run(self, cycles = 1):
"""Run the simulation for a given number of cycles"""
_indexer = self.indexer
_laws = self.laws
while cycles > 0:
cycles -= 1
self.tick += 1
_tick = self.tick
for p in self.particles:
p.doInteractions(_indexer, _laws, _tick)
for p in self.particles:
p.update(_laws)
_indexer.updateAll()
class ParticleSystem(object):
"""\
ParticleSystem(laws[,initialParticles][,initialTick]) -> new ParticleSystem object
Discrete time simulator for a system of particles.
Keyword arguments:
- initialParticles -- list of particles (default=[])
- initialTick -- start value of the time 'tick' count (default=0)
"""
def __init__(self, laws, initialParticles=[], initialTick=0):
"""x.__init__(...) initializes x; see x.__class__.__doc__ for signature"""
self.indexer = SpatialIndexer(laws.maxInteractRadius)
self.laws = laws
self.particles = []
self.tick = initialTick
self.particleDict = {}
self.add(*initialParticles)
def add(self, *newParticles):
"""Add the specified particle(s) into the system"""
self.particles.extend(newParticles)
for p in newParticles:
self.particleDict[p.ID] = p
self.indexer.updateLoc(*newParticles)
def remove(self, *oldParticles):
"""\
Remove the specified particle(s) from the system.
Note that this method does not destroy bonds from other particles to
these ones.
"""
for particle in oldParticles:
self.particles.remove(particle)
del self.particleDict[particle.ID]
self.indexer.remove(*oldParticles)
def removeByID(self, *ids):
"""\
Remove particle(s) as specified by id(s) from the system.
Note that this method does not destroy bonds from other particles to
these ones.
"""
particles = [self.particleDict[id] for id in ids]
self.remove(*particles)
def updateLoc(self, *particles):
"""\
Notify this physics system that the specified particle(s)
have changed position.
Must be called if you change a particle's position,
before calling run().
"""
self.indexer.updateLoc(*particles)
def withinRadius(self, centre, radius, filter=(lambda particle: True)):
"""\
withinRadius(centre,radius[,filter]) -> list of (particle,distSquared)
Returns a list of zero or more (particle,distSquared) tuples. The
particles listed are those within the specified radius of the specified
centre point, and that passed the (optional) filter function:
filter(particle) -> True if the particle is to be included in the list
"""
return self.indexer.withinRadius(centre, radius, filter)
def run(self, cycles=1):
"""Run the simulation for a given number of cycles (default=1)"""
# optimisation to speed up access to these functions:
_indexer = self.indexer
_laws = self.laws
while cycles > 0:
cycles -= 1
self.tick += 1
_tick = self.tick
for p in self.particles:
p.doInteractions(_indexer, _laws, _tick)
for p in self.particles:
p.update(_laws)
_indexer.updateAll()
