起始航迹python

在Python中，可以使用matplotlib库来可视化物体的航迹。根据引用和引用给出的代码示例，可以使用以下代码来实现起始航迹的可视化：

import numpy as np
import matplotlib.pyplot as plt
import matplotlib.animation as animation

# 定义粒子类
class Particle:
    def __init__(self, x, y, ang_vel):
        self.x = x
        self.y = y
        self.ang_vel = ang_vel

# 定义粒子模拟器类
class ParticleSimulator:
    def __init__(self, particles):
        self.particles = particles

    def evolve(self, dt):
        timestep = 0.00001
        nsteps = int(dt / timestep)
        for i in range(nsteps):
            for p in self.particles:
                norm = (p.x ** 2 + p.y ** 2) ** 0.5
                v_x = -p.y / norm
                v_y = p.x / norm
                d_x = timestep * p.ang_vel * v_x
                d_y = timestep * p.ang_vel * v_y
                p.x += d_x
                p.y += d_y

# 定义可视化函数
def visualize(simulator):
    X = [p.x for p in simulator.particles]
    Y = [p.y for p in simulator.particles]
    fig = plt.figure()
    ax = plt.subplot(111, aspect='equal')
    line, = ax.plot(X, Y, 'ro')
    plt.xlim(-1, 1)
    plt.ylim(-1, 1)

    # 初始化函数
    def init():
        line.set_data([], [])
        return line,

    # 动画函数
    def animate(i):
        simulator.evolve(0.01)
        X = [p.x for p in simulator.particles]
        Y = [p.y for p in simulator.particles]
        line.set_data(X, Y)
        return line,

    # 创建动画对象
    anim = animation.FuncAnimation(fig, animate, init_func=init, blit=True, interval=10)
    plt.show()

# 创建粒子模拟器对象并添加粒子
particles = [Particle(0.5, 0.5, 1.0), Particle(-0.5, -0.5, -1.0)]
simulator = ParticleSimulator(particles)

# 调用可视化函数
visualize(simulator)

这段代码会生成一个动画，展示两个粒子的起始航迹。每个粒子的起始位置和旋转速度可以根据具体需求进行调整。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* *2* *3* [Python教程之粒子运动轨迹动态绘图](https://blog.csdn.net/zhanghaijun2013/article/details/108308960)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}}] [.reference_item style="max-width: 100%"]
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