Bed of Nails

const pebbleHeight = 256;

const pebbleCount = 64;

const pebbleWidth = 32;

​

function setup() {

  createCanvas(1024, 1024, WEBGL);

  colorMode(HSB, 360);

  noLoop();

}

​

function draw() { //function calls

  background(0);

  noStroke();

  ambientLight(360);

  pointLight(0, 0, 180, windowWidth, -windowHeight * 0.5, 0);

  pointLight(0, 0, 180, -windowWidth, -windowHeight * 0.5, 0);

  pointLight(random(360), 360, 30, 0, -windowHeight * 2, 0);

  rotateX(-0.95);

  for (var i = 0; i < pebbleCount + 1; i += 1) {

    for (var j = 0; j < pebbleCount + 1; j += 1) {

      push();

      translate(

        map(i, 0, pebbleCount, -pebbleCount * 0.5, pebbleCount * 0.5) * pebbleWidth * 2,

        0,

        map(j, 0, pebbleCount, -pebbleCount * 0.5, pebbleCount * 0.5) * pebbleWidth * 2

      );

      translate(random(-5, 5), 0, random(-5, 5));

      translate(0, pebbleHeight * pebbleCount * 0.5, -200);

      translate(random(-10, 10), -pebbleHeight * random(0.9, 1.1), random(-10, 10));

      rotateX(random(-0.1, 0.1))

      rotateZ(random(-0.1, 0.1))

      rotateY(random(-0.5, 0.5))

      specularMaterial(330);

      cylinder(random(0.25, 0.125) * pebbleWidth, pebbleHeight * random(0.8, 64), 64);

      pop();

    }

  }

}

​

function keyTyped() {

  if (key === 's') {

    saveCanvas();

  }

}