NBodySimulator: a mini 3D multibody simulator made for CPII 2020

This is my mini project for n-body problem for Computer Programming II 2020 Spring in USTC.

Source: https://introcs.cs.princeton.edu/python/34nbody/

Princeton used their own API based on a 2D toolkit "pygame". So I used numpy instead to meet current needs.

Directory Structure

├─.travis.yml // Travis CI config
├─my_project // my project and testcase.
└─Princeton_sample // samples given by Princeton

Getting Started

Clone this repo, move directly into my_project directory and run nbodysimulation.py.

Dependencies

• Matplotlib
• Numpy

Run the project

• Install all the dependencies before you start running this demo

• Run cd path_to_the_file_you_cloned in Windows Terminal

• Run python nbodysimulator.py

• Input the parameters following the instruction given. For example:

  • Input the number of material points you want to simulate and their mass (KG) , velocity and position.
  • Among them, the velocity and position needs to be in the form of numpy vector like [x,y,z].

• See the results.

Commit History & Changes

May 21, 2020: Sample given by princeton updated. Test ok.

Jul 24, 2020: Finish adding runnable 3 & 2 body simulators. Test OK.

Jul 27, 2020: Finish the project.