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46 lines
1.0 KiB
Python
46 lines
1.0 KiB
Python
import numpy as np
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import matplotlib.pyplot as plt
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import time
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t0 = 0
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tf = 20
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# tf=3
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dt = 1
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t = t0
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U = 1.25 # vitesse m.s-¹
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Wm = 0.3 # distance minimale entre la voiture et celle qui la précède m
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Ws = 0.9 # m
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ww = np.linspace(0, 10, 200)
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def phi(ww): # prend en entrée la distance entre les deux véhicules
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PHI = (U*(1 - np.exp(- (ww-Wm)/Ws)))
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return (ww >= Wm)* PHI # retourne la vitesse du véhicule
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y = np.linspace(0, 0, 11)
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xxbase = np.linspace(0, 1, 11)
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def position(fposition):
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dist = np.diff(fposition)
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vitesses = phi(dist)
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newv = np.insert(vitesses, 10, 1.25)
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newp = fposition + newv * dt
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return newp
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xxold = xxbase.copy()
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while(t<tf):
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plt.figure(1,figsize=[16,9])
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plt.clf()
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plt.xlim([-1,10])
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xx = position(xxold)
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color = ['#ff0000', '#ff5300', '#ffa500', '#ffd200', '#ffff00', '#80c000', '#008000', '#004080', '#0000ff', '#2600c1', '#4b0082']
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plt.scatter(xx, y, c=color)
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plt.draw()
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# plt.savefig(str(t)+'.png')
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plt.pause(0.1)
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t += dt
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xxold = xx.copy()
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