Electrostatic simulations

A group of files showcasing different things under electrostatic interactions and electric field visualiser.

Current design

• src/ has 5 files, Integrator, Scenes, Charge, Renderer, ElectrostaticSystem.
• Each of them have been distributed responsibilities for easily scaling and debugging.

Charge

• Charge.h provides just a container struct for storing information related to a charge.
• It has charge, mass radius, pos, velocity, force, color, and isStatic.
  • Radius is current same for all
• It has two sub-structs, Electron and Proton for modularity purposes.
• It's only purpose is to hold information. It does not do anything else, and has no knowledge about other charges and doesn't draw itself ever.
• Includes raylib, no raymath

Electrostatic System

• The parent container of any simulation. It owns all the charges used for the simulation
• It is designed to be only initialised as a single object per simulation.
• It stores information related to constants, like Coulomb constant and softening factor
• Provides public functions for
  • adding charges
  • getting the vector of charges
  • clearing all charges
  • Computing forces on all charges
  • Resetting forces if required
  • Returning Electric field due to itself (system) at a point
  • Returning Potential in the same fashion
• Inherits raylib from Charge, and does not use raymath for vector works

Integrator

• A class used for mathematical purpose of integration.
• Right now, since I'm only integrating motion, it is not very prominent, but later when integrating fields and potentials I might use RK4.
• Also want to reflect the difference between two different integration methods, and how they deviate from reality over time.
• It is initialised as an object in a simulation, and can be changed inside the simulation itself, if required.

NOTE :

• Had to implement Vector2Clamp by myself, since inclusion of raymath.h was causing linker issues.
• Please help if you know how to debug.

Scene

• The functional container for a 'simulation'.

• Responsible for frame-wise update, initialising ElectrostaticSystem, and using the integrator to calculate necessary variables.

• Owns a ElectrostaticSystem variable, and an Integrator.

• Currently only one scene implemented, plan to expand it further for more simulations.

• It is also responsible for all of the physics that is not to be done using integration. Collisions, out-of-bounds, etc, are all handled by it.

• It also handles input for now

Renderer

• Handles rendering everything related to a specific system.
• In a very elementary state right now, will expand later.
• Might later include flags depending on user input of what to draw (interactive simulation)and is therefore a class, not just a function

TODO :

• Implement charge collision
• Include raylib as submodule
• Expand on scenes available and simulations