​

function setup() {

  createCanvas(600, 400);

  frameRate(4);

}

​

function draw() {

  background(0);

  noStroke();

  for (let y = 0; y <= height; y += 50) {

    for (let x = 0; x <= width; x += 50) {

      // Random color fill for the circles

      fill(random(250), random(250), random(250));

​

      // Check if the mouse is inside the current circle

      let d = dist(mouseX, mouseY, x, y); // Distance from mouse to circle center

      if (d < r / 2) {

        // If mouse is inside circle, make the circle bigger

        ellipse(x, y, r * 1.5); // 2.5 times the normal size

      } else {

        // If the mouse is not over the circle, draw it normally

        ellipse(x, y, 8);

      }

    }

    r = random(30, 30); // Randomize the radius for the next set of circles

  }

}

​