Function example_1

physics/n_body_simulation.py:253–274

Example 1: figure-8 solution to the 3-body-problem This example can be seen as a test of the implementation: given the right initial conditions, the bodies should move in a figure-8. (initial conditions taken from http://www.artcompsci.org/vol_1/v1_web/node56.html) >>> body

()

def example_1() -> BodySystem:
    """
    Example 1: figure-8 solution to the 3-body-problem
    This example can be seen as a test of the implementation: given the right
    initial conditions, the bodies should move in a figure-8.
    (initial conditions taken from http://www.artcompsci.org/vol_1/v1_web/node56.html)
    >>> body_system = example_1()
    >>> len(body_system)
    3
    """

    position_x = 0.9700436
    position_y = -0.24308753
    velocity_x = 0.466203685
    velocity_y = 0.43236573

    bodies1 = [
        Body(position_x, position_y, velocity_x, velocity_y, size=0.2, color="red"),
        Body(-position_x, -position_y, velocity_x, velocity_y, size=0.2, color="green"),
        Body(0, 0, -2 * velocity_x, -2 * velocity_y, size=0.2, color="blue"),
    ]
    return BodySystem(bodies1, time_factor=3)


def example_2() -> BodySystem: