Bird's Nest

function setup() {

  createCanvas(500, 500);

  background("beige");

  colorMode(HSL, 360, 100, 100);  // Color mode allows me to pick colors with hue saturation and lightness

  for (let i = 0; i < 10; i++){

    // Draw lines in the nest

    push();

    translate(250, 250);                // Shift canvas to center of nest

    for (let i = 0; i < 60; i++) {      // Draw 200 lines

      stroke(color(   random()*20+20,   // Random HSL color in the brown range

                      random()*30+70,

                      random()*20+10));

      strokeWeight(easeOutQuad(random())*3+1);

      // Pick a random location in a circle

      // To keep it in a circle, I pick a radius and angle for for each point

      // To ensure that points closer to the circle aren't more common, I used an easing.

      theta1 = random()*2*PI;

      theta2 = random()*2*PI;

      r1 = easeOutQuad(random())*220;

      r2 = easeOutQuad(random())*220;

      // Convert radial coordinates to xy coordinates

      line(r1*cos(theta1), r1*sin(theta1), r2*cos(theta2), r2*sin(theta2))

    }

    pop();

​

    // Draw ovals in nest

    noFill();

    for (let i = 0; i < 50; i++) {      // Draw 20 ovals

      push();

      stroke(color(   random()*20+20,   // Random HSL color in the brown range

                      random()*30+70,

                      random()*20+10));

      strokeWeight(easeOutQuad(random())*3+1);

      translate(random()*50+225, random()*50+225);        // Shift canvas to random center point

      rotate(random()*2*PI);                              // Rotate oval randomly

      let start = random()*2*PI;

      arc(0, 0, easeOutQuad(random())*250+150, easeOutQuad(random())*250+150, start, start+PI/2+random()*PI/2); 

      pop();

    }

  }

  fill("rgb(196,249,250)");

  stroke("black"); strokeWeight(1);

  for (let i = 0; i < 5; i++){

    theta1 = easeOutSine(random())*2*PI;

    r1 = random()*150;

    push(); translate(250, 250); rotate(random()*2*PI);

    ellipse(r1*cos(theta1), r1*sin(theta1), 70, 120); pop();

  }

}

​

function easeOutQuad(x) {

  return Math.sqrt(1 - Math.pow(x - 1, 2));

}

​

function easeOutSine(x) {

  return Math.sin((x * Math.PI) / 2);

}