202-Advanced-Python-1/Solar_system3d.py at main · AyarKulakovski/202-Advanced-Python-1 · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
import numpy as np
import matplotlib.pyplot as plt
from matplotlib import animation


class Star:
    def __init__(self, mass: float):
        self.mass = mass
        self.vec_P = np.array([[0.0, 0.0, 0.0],])


class CosmicBody:
    G = 6.67430e-11
    sec_in_day = 86400

    def __init__(self, mass: float, vec_v: np.ndarray, vec_P: np.ndarray):
        self.mass = mass
        self.vec_v = vec_v
        self.vec_P = vec_P

    def gravitate(self, bodys: list, t0: float):
        v = self.vec_v[-1]
        v_delt = np.array([[0.0, 0.0, 0.0]])

        for affect_bod in bodys:
            r_vec = self.vec_P[-1] - affect_bod.vec_P[-1]
            r = sum(r_vec**2)**0.5

            v_delt += (-self.G * self.mass *
                    affect_bod.mass  *
                    r_vec / r**3) * self.sec_in_day * t0 / self.mass

        r_new = self.vec_P[-1] + (v + v_delt) * self.sec_in_day * t0
        self.vec_P = np.append(self.vec_P, r_new, axis=0)
        self.vec_v += v_delt

    def destroy(self, bodys):
        for affect_bod in bodys:
            if sum(((self.vec_P[-1] - affect_bod.vec_P[-1])**2))**0.5 < 1.75e9:
                return True, affect_bod


def random_vec():
    neg_or_pos = [1 if np.random.random() > 0.5
                    else -1 for _ in range(3)]

    return np.random.rand(1, 3) * neg_or_pos

Sun = Star(2.5e31)

first_body = CosmicBody(np.random.random() * 1.0e29,
                        random_vec()*1.0e4,
                        random_vec()*5.0e11)

all_bodyes = [Sun, first_body]
bodyes_for_plot = [{first_body: 1}]

t0 = 0.0
delta_t = 1.0
t = 365

while t0 < t and len(all_bodyes) > 1:
    for i, body in enumerate(all_bodyes[1:], start=1):
            affect_bodyes = all_bodyes[:i] + all_bodyes[i+1:]
            body.gravitate(affect_bodyes, delta_t)
            destroy = body.destroy(affect_bodyes)
            if destroy:
                all_bodyes.remove(body)
                if destroy[1] is not Sun:
                    all_bodyes.remove(destroy[1])
    bodyes_for_plot += [{body: body.vec_P.shape[0] for body in all_bodyes[1:]}]
    if np.random.random() > 0.9:
        new_body = CosmicBody(np.random.random() * 1.0e29,
                        random_vec()*5.0e4,
                        random_vec()*5.0e11)
        all_bodyes.append(new_body)


    t0 += delta_t


fig = plt.figure(figsize=(8, 8))
ax = fig.add_subplot(projection="3d")


ploted_bodyes = {}
def animate(i):
    global ploted_bodyes
    for body in bodyes_for_plot[i]:
        index = bodyes_for_plot[i][body]
        coord = body.vec_P
        if body not in ploted_bodyes:
            ploted_bodyes[body] = (ax.plot(coord[index-1][0], coord[index-1][1], coord[index-1][2],
                                            marker='o',
                                            markersize=6,
                                            markeredgecolor="black",
                                            markerfacecolor="black")[0],
                                   ax.plot([], [], [], '-g',
                                            lw=0.2,
                                            c="blue")[0])
        else:
            ploted_bodyes[body][0].set_data_3d(coord[index-1][0], coord[index-1][1], coord[index-1][2])
            ploted_bodyes[body][1].set_data_3d(coord[:index, 0], coord[:index, 1], coord[:index, 2])

        for remove_el in set(ploted_bodyes) - set(bodyes_for_plot[i]):
            remove_plot = ploted_bodyes.pop(remove_el)
            remove_plot[0].remove()
            remove_plot[1].remove()

    sun_point = ax.plot([0], [0], [0],
                    marker='o',
                    markersize=10,
                    markeredgecolor="black",
                    markerfacecolor="yellow")[0]

    ax.set(xlim3d=(-1.2*5.0e11, 1.2*5.0e11), xlabel='X')
    ax.set(ylim3d=(-1.2*5.0e11, 1.2*5.0e11), ylabel='Y')
    ax.set(zlim3d=(-1.2*5.0e11, 1.2*5.0e11), zlabel='Z')
    return (sun_point,) + tuple(ploted_bodyes.values())


solar_system_anim = animation.FuncAnimation(fig,
                                            func=animate,
                                            frames = len(bodyes_for_plot),
                                            interval=1)

plt.show()