let pulse = 255;

let left = 0;

let right = 0;

let r = 200;

let customFont;

​

function preload() {

  // Load a font file

  customFont = loadFont('Arial.ttf');

}

​

function setup() {

  createCanvas(600, 600, WEBGL);

  angleMode(DEGREES); // degrees for easier calculations

  colorMode(HSB);

​

  frameRate(30);

  stroke(199, 190, 88);

  strokeWeight(3);

  noFill();

  textFont(customFont);

  textSize(18);

​

  // Set lights and material properties

  ambientLight(200,200,200); // Ambient light to illuminate the scene

  pointLight(255, 255, 255, 0, 0, 300); // Point light to illuminate particles from the front

}

​

function draw() {

  rotateX(frameCount % 360);

  rotateY(frameCount % 360);

  background(0);

​

  orbitControl(4, 4);

for (let i = 0; i < 500; i++) {

    let rho = random(50, 200);

    let phi = random(0, 180);

    let theta = random(0, 360);

​

    let x = rho * sin(phi) * cos(theta);

    let y = rho * sin(phi) * sin(theta);

    let z = rho * cos(phi);

​

    // Set material properties for particles

    ambientMaterial(255);

    normalMaterial();

​

    push();

    translate(x, y, z);

    sphere(5);

    pop();

  }

  // Draw the sphere at a fixed position

  push();

  translate(0, 0, 0);

  noStroke();

  fill(255);

  sphere(80);

  pop();

}

​

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function keyPressed() {

  if (key == " ") {

    // important to have in order to start the serial connection!!

    setUpSerial();

  }

}

​

// This function will be called by the web-serial library

// with each new *line* of data. The serial library reads

// the data until the newline and then gives it to us through

// this callback function

function readSerial(data) {

  ////////////////////////////////////

  //READ FROM ARDUINO HERE

  ////////////////////////////////////

​

  if (data != null) {

    // make sure there is actually a message

    // split the message

    let fromArduino = split(trim(data), ",");

    // if the right length, then proceed

    if (fromArduino.length == 2) {

      // only store values here

      // do everything with those values in the main draw loop

      rVal = fromArduino[0];

      pulse = fromArduino[1];

      print(pulse);

    }

​

    //////////////////////////////////

    //SEND TO ARDUINO HERE (handshake)

    //////////////////////////////////

    let sendToArduino = left + "," + right + "\n";

    writeSerial(sendToArduino);

  }

}