var latestData;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

​

  serial = new p5.SerialPort();

  serial.open('COM2');

  serial.on('data', getData);

}

​

var counter = 0;

​

function draw() {

  background(0);

  stroke(255);

  strokeWeight(1);

  noFill();

​

  if (latestData != undefined) {

    text(latestData, 15, 25);

  }

​

  let pos, sensor = latestData * 500;

  if (sensor) {

    drawBackground();

  }

  for (let i = 0; i < 15; i++) {

    pos = random(0, sensor);

    drawLine(sensor, (height / 2) + pos, random(0, 255), random(0, 255), random(0, 255), random(0, 255));

    drawLine(sensor, (height / 2) - (pos * 2), random(0, 255), random(0, 255), random(0, 255), random(0, 255));

  }

}

​

function drawLine(sensor, n, r, g, b, a) {

  let data = [];

  let newData = [];

  let cr = 255, cg = 255, cb = 255, ca = 0;

​

  for (let i = 0; i <= (width + 300); i++) {

    data[i] = height / 2;

  }

​

  if (sensor) {

    for (let i = 150, j = 0; i <= (width + 300) / 2; i++, j += n / width / 2) {

      data[i] = height / 2 - (j);

    }

​

    for (let i = (width + 300) / 2, j = 0; i >= 150; i--, j += n / width / 2) {

      data[width / 2 + i] = height / 2 - (j);

    }

    cr = r;

    cg = g;

    cb = b

    ca = a;

  }

​

  newData = movingAverage(data, 150);

  let ref = random(0, 150);

  for (let i = 0; i < ref; i++) {

    newData.shift();

  }

  beginShape();

  stroke(cr, cg, cb, ca);

  strokeWeight(15);

  for (let i = 0; i <= width; i++) {

    vertex(i, newData[i]);

  }

  endShape();

}

​

function drawBackground() {

  let aCol = color(random(0, 255), random(0, 255), random(0, 255), 100);

  let bCol = color(random(0, 255), random(0, 255), random(0, 255), 100);

​

  aspeed = bounce(0, 0, 100, 3)

  bspeed = bounce(128, 0, 100, -3);

​

  for (let i = 0; i <= width; i++) {

    let inter = map(i, 0, width, 0, 1);

    let col = lerpColor(aCol, bCol, inter);

    stroke(col);

    line(i, 0, i, height);

  }

}

​

function bounce(num, low, high, speed) {

  if (num < low || num > high) {

    speed *= -1;

  }

  return speed;

}

​

function movingAverage(prices, interval) {

  let index = interval - 1;

  const length = prices.length + 1;

  let results = [];

  while (index <= length) {

    index = index + 1;

    const intervalSlice = prices.slice(index - interval, index);

    const sum = intervalSlice.reduce((prev, curr) => prev + curr, 0);

    results.push(sum / interval);

  }

  return results;

}

​

function getData() {

  let currentData = serial.readLine();

  trim(currentData);

  if (!currentData) return;

  latestData = currentData;

}