nbody-simulator-docker

Description

This is a simple n-body simulator made with OpenGL for the graphics part and C++ for the logic part. The project is running on a complete docker environment.

Note
The project is a test of paralleling the calculation of the particles on different docker containers and store them in a redis database. A docker is also used to generate the video from the redis database.

Videos

demo-video.mp4

Longer video 🚀🚀 here 🚀🚀

How to use

To use the project, you need to have docker installed on your computer. You can download it here: https://www.docker.com/

You also need to install the following linux lib:

sudo apt-get install xvfb

You also need python3 installed on your computer. You can download it here: https://www.python.org/downloads/

Once you have installed the requirements, you can install the python libs with the following command:

pip install -r requirements.txt

This will install the required libs to generate the docker-compose.yml using the docker-compose-generator.py python script.

python3 docker-compose-generator.py <total_particles> <number_of_calculators> <simulation_recording_time>

exemple:

python3 docker-compose-generator.py 1000 4 10

This will generate a docker-compose.yml file with 4 calculators and 1000 particles and a simulation recording time of 10 seconds.

Once created you can run the docker-compose.yml with the following command:

./test.sh

An output video will be genereated in the ./src/NBodyGraphics/output_dir folder.

Dependencies

• OpenGL version: 3.3
• GLSL version: 330
• GLFW version: 3.2.1
• Glad version: 0.1.36
• GLM version: 0.9.9
• OpenCV version: 4.7.0-dev
• nlhomann/json version: 3.9.1
• libcurl version: 7.74.0

Architecture

flowchart LR
    
    subgraph Host
    
    subgraph Docker-Calculators
    docker1 & docker2 & docker...
    end
    docker1 & docker2 & docker... <--> |GET/POST| api-redis
    subgraph Redis
    api-redis
    end
    api-redis --> |Send particles| NBodyGraphics
    NBodyGraphics --> |Request update| api-redis
    subgraph Video-Generator
    end
    
    subgraph Video-Generator
    NBodyGraphics
    end
    
    NBodyGraphics --> |Save video | Volume
   
end

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Logic Diagram

graph TB
    A((Start))
    B[NBodyGraphics]
    C[API-Redis]
    D[NBodycalculator1]
    E[NBodycalculator2]
    F[NBodycalculator3]
    G[NBodycalculator...]
    H[API-Redis]
    I[NBodyGraphics]
    J[Volume]
    
    A --> B
    B --> | Physic update | C
    C --> | Particle request update | D & E & F & G
    D & E & F & G --> | Send updated particles | H
    H --> | Send updated particles | I
    I --> | Do another cycle | B
    I --> | Save video | J

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Libraries

docker:
https://www.docker.com/

cmake:
https://cmake.org/

glfw:
https://www.glfw.org/docs/latest/

glm:
https://glm.g-truc.net/0.9.9/index.html

glad:
https://glad.dav1d.de/

OpenGL:
https://www.opengl.org/

Json:
https://github.com/nlohmann/json

libcurl:
https://curl.se/libcurl/

Contributors

Axel COURMONT:

• @Alshkor
• https://github.com/Alshkor

Quentin MOREL:

• @Im-Rises
• https://github.com/Im-Rises

Alexis ROVILLE:

• @Fromiel
• https://github.com/Fromiel