2D Gravity Simulator

A very simple, basic simulation of gravity between different points, inspired by particles.js. Essentially, it calculates the gravitational force between all nodes and changes the velocity accordingly.

For a demo, click here.

Usage

First, you will need to define a canvas element with an ID and set its background to something else than white. Next, the function startSimulation is responsible for starting the simulation. It has various different options:

• id - The id of your canvas element.
• size - How big the canvas should be.
• amountOfObjects - How many objects will be rendered initially. I recommend to not have more than 100.
• g - The gravitational constant. The higher it is, the more attracted the objects will be to each other.
• slowDown - If g is too high, the velocity of some nodes might be really high. Hence, the animation can be slowed down with this factor.

Then to stop the simulation, call the stopSimulation function.