Simulation with Python by Unknown

Author:Unknown
Language: eng
Format: epub, pdf

return np.asarray(buf)

def generate_gif(self, file_name = "multiple_ball_collision.gif", steps = 100):

with imageio.get_writer(file_name, mode='I') as writer:

for _ in range(steps):

system.update()

image = system.render(return_array = True)

writer.append_data(image)

Let’s take a look at how our two-ball system evolves in GIF 4-3. If you are reading a hard copy, make sure to check online for the animation.

72

Chapter 4 Balls in a 2-D Box, a simple physiCs engine

GIF 4-3. Two balls moving in a box with collisions

We can also generate a bunch of random balls and see how they evolve as in GIF 4-4.

The implementation of this experiment is left to the readers as an exercise. Here is a five- ball system. Notice that the sizes of the balls are not proportional to the mass. Can you guess which ball has the largest mass?

GIF 4-4. Multiple balls with random radii, masses, and velocities in a box 73

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