let juliaSets = []; // We'll use a single array for all Julia sets and assign them to quadrants later

const maxIterations = 100;

const numParticles = 1000; // Number of particles to generate for each JuliaSet

const noiseScale = 0.5; // Scale factor for noise

const numJuliaSets = 3; // Number of Julia sets per quadrant

​

// Oscillation variables

let angleRe = 0; // Angle for real part rotation

let angleIm = 0; // Angle for imaginary part rotation

let oscillationSpeed = 0.02; // Speed of the oscillation

let oscillationAmplitude = 1.5; // Amplitude of the oscillation

​

function setup() {

  createCanvas(620, 877);

  noStroke();

  colorMode(HSB, 360, 255, 255, 255);

​

  // Generate Julia sets for each quadrant

  for (let i = 0; i < 4; i++) {

    let quadrantJuliaSets = [];

    for (let j = 0; j < numJuliaSets; j++) {

      let cRe = random(-1.5, 1.5);

      let cIm = random(-1.5, 1.5);

      quadrantJuliaSets.push(new JuliaSet(cRe, cIm)); // Add each Julia set to the quadrant

    }

    juliaSets.push(quadrantJuliaSets); // Push the quadrant's sets into the main array

  }

}

​

function draw() {

  background(0, 25); 

​

  particles = [];

​

  // Automatically change ranges for the Julia sets

  let cRe, cIm;

  // Check if mouse is over the canvas

  if (mouseX >= 0 && mouseX <= width && mouseY >= 0 && mouseY <= height) {

    cRe = map(mouseX, 0, width, -1.5, 1.5);

    cIm = map(mouseY, 0, height, -1.5, 1.5);

  } 

  else {

    // Use oscillation when mouse is not over the canvas

    cRe = oscillationAmplitude * sin(angleRe);

    cIm = oscillationAmplitude * sin(angleIm);

    angleRe += oscillationSpeed;

    angleIm += oscillationSpeed;

  }

​

  // Define quadrants for Julia sets

  let quadrants = [

    [0, 0, width / 2, height / 2],           // Top-left

    [width / 2, 0, width, height / 2],        // Top-right

    [0, height / 2, width / 2, height],       // Bottom-left

    [width / 2, height / 2, width, height]    // Bottom-right

  ];

​

  // Generate particles for all Julia sets in each quadrant

  for (let i = 0; i < 4; i++) {

    let q = quadrants[i];

    for (let juliaSet of juliaSets[i]) {

      juliaSet.updateConstants(cRe, cIm); // Update constants

      juliaSet.createParticles(q[0], q[1], q[2], q[3]);

    }

  }

​

  // Update and display all particles

  for (let particle of particles) {

    particle.update();

    particle.display();

  }

}

​