Gravity laboratory.

A toy to play with gravity.

The orbits are rendered using Euler's integration, and pre-orbit rendering (while placing body) is calculated by Verlet's integration.

• Create objects and set position and velocity using mouse.
• Modify mass, velocity vector (x and y components), position, diameter and color for each body.
• Two presets with Sun and Earth parameters.
• Modify G.
• Set scale, velocity scale, grid and time scale.
• Create bodies providing mass, velocity and position parameters.
• Pre-draw orbits while placing the body.
• Trace orbits.
• Infinite universe.
• Change body values in real time.
• Body's gravity enable/disable.

• Install Nodejs
• Browser with HTML5 support.

1. CD to project directory. Install dependencies.

npm install

2. Build

npm run dist

3. Run

Open index.html in your browser, or run

npm run watch

This last command will open a browser and will load index.html automatically.

Gravity-lab is licensed under the MIT license. (https://opensource.org/licenses/MIT)