mirror of
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synced 2024-12-23 03:43:32 +01:00
134 lines
3 KiB
Python
134 lines
3 KiB
Python
"""
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Locations are wrappers around a Numpy N-dimensional
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array.
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"""
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import numpy as np
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from functools import partial
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try:
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from travelsignal import TravelSignal
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except ModuleNotFoundError:
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from .travelsignal import TravelSignal
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class Location:
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"""
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A location is a point designated by a spatial coordinate x.
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"""
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def __init__(self, x):
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self.x = np.asarray(x)
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def __repr__(self):
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return "Location({})".format(repr(self.x))
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def __getitem__(self, key):
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return self.x[key]
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def __setitem__(self, key, val):
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self.x[key] = val
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# math
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def __add__(self, other):
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if isinstance(other, Location):
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other = other.x
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return self.__class__(self.x + other)
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def __sub__(self, other):
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if isinstance(other, Location):
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other = other.x
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return self.__class__(self.x - other)
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def __mul__(self, other):
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return self.__class__(self.x * other)
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def __eq__(self, other):
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if isinstance(other, Location):
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other = other.x
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return np.all(self.x == other)
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# math alias functions
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__radd__ = __add__
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__rsub__ = __sub__
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__rmul__ = __mul__
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class Receiver(Location):
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"""
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A location able to trace a signal over time.
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Optionally applies a transformation to the traced signal.
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"""
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def __repr__(self):
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return "Receiver({})".format(repr(self.x))
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def recv(self, travel_signal: TravelSignal) -> TravelSignal:
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"""
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Return a function that traces the signal as a function of time
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at the receiver's location
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"""
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return partial(travel_signal, x_f=self.x)
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receive = recv
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class Emitter(Location):
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"""
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Emit a signal from position x_0 (and time t_0)
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"""
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def emit(self, travel_signal: TravelSignal) -> TravelSignal:
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return partial(travel_signal, x_0=self.x)
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if __name__ == "__main__":
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import matplotlib.pyplot as plt
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from mpl_toolkits.mplot3d import axes3d
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# 2D showcase
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source = Emitter([1,1])
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antennae = [
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Receiver([2,3]),
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Receiver([10,10]),
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Receiver([-2,-3]),
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Receiver([-10,0]),
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]
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fig, ax = plt.subplots()
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ax.set_title("Geometry of Emitter(s) and Antennae")
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ax.set_ylabel("y")
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ax.set_xlabel("x")
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ax.plot(*source.x, '*', label="Emitter")
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for j, ant in enumerate(antennae):
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ax.plot(*ant.x, '+', label="Antenna {}".format(j))
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ax.legend()
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fig.show()
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# 3D showcase
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source = Emitter([1,1,1])
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antennae = [
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Receiver([2,3,0]),
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Receiver([10,10,-5]),
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Receiver([-2,-3,9]),
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Receiver([-10,0,-5]),
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]
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fig = plt.figure()
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ax = fig.add_subplot(111, projection='3d')
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ax.set_title("Geometry of Emitter(s) and Antennae")
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ax.set_xlabel("x")
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ax.set_ylabel("y")
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ax.set_zlabel("z")
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ax.plot([source.x[0]], *source.x[1:], '*', label="Emitter")
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for j, ant in enumerate(antennae):
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ax.plot([ant.x[0]], *ant.x[1:], '+', label="Antenna {}".format(j))
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ax.legend()
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plt.show()
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