let micVal = 0;

let minRadius = 200;

let maxRadius = 350;

let circles = [];

let circleN = 9;

let minSpeed = 1;

let maxSpeed = 5;

let speedFactor = 1;

let baseline = 535;

​

function setup() {

  createCanvas(1440, 780);

  textSize(18);

  randomize(circleN);

}

​

function draw() {

  background(255)

​

  if (!serialActive) {

    text("Press Space Bar to select Serial Port", width/2-150, height/2);

  } else {

    fill(0);

    // text("Connected", 20, 30);

    //text("Mic", 20, 50);

    //text(micVal, 100, 50);

    //text("SpeedFactor", 20, 90);

    //text(speedFactor, 150, 90);

    if(micVal-baseline>10){

      speedFactor = 1+abs(micVal-baseline)/20;

    }else{

      if(speedFactor>1){

        speedFactor = speedFactor - speedFactor*0.01;

      }

    }

    for (let i = 0; i < circles.length; i++) {

      circles[i].display();

    }

    for (let i = 0; i< circles.length; i++) {

      circles[i].update();

      circles[i].display();

      // Remove bubbles that are off-screen

      if (circles[i].y < -maxRadius) {

        circles.splice(i, 1);

      }

    }

    if (frameCount % 90 === 0) {

      randomize(1);

    }

​

  }

}

​

class myCircle {

  constructor(x, y, size, speed, f) {

    this.x = x;

    this.y = y;

    this.size = size;

    this.speed = speed;

    this.f = f;

    this.redVal = random(200, 255);

    this.blueVal = random(200, 255);

  }

  update() {

    this.y -= this.speed*speedFactor;

  }

  display() {

    let radius = map(fVal, 0, 1023, 0, this.size);

    let colorR = map(fVal, 0, 1023, 0, 255);

    let colorB = map(fVal, 0, 1023, 255, 0);

    let colorG = 0;

    for (let i = 0; i <= radius; i=i+2) {

      noStroke();

      fill(color(colorR, colorG, colorB, 2));

      ellipse(this.x, this.y, i, i*this.f);

      } 

  }

}

​

function randomize(N){

   for (let i = 0; i < N; i++) {

    let x = random(0, width);

    let y = random(minRadius, height);

    let r = random(minRadius, maxRadius);

    if(N==1){

      y = height + r;

    }

    let s = random(minSpeed, maxSpeed)/4;

    let f = random(90, 110)/100;

    circles.push(new myCircle(x, y, r, s, f));

  }

}

​

function keyPressed() {

  if (key == " ") {

    setUpSerial();

  }

}

​

function readSerial(data) {

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

  //READ FROM ARDUINO HERE

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

​

  if (data != null) {

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

    // if the right length, then proceed

    if (fromArduino.length == 2) {

      micVal = fromArduino[0];

      fVal = fromArduino[1];

    }

​

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

    //SEND TO ARDUINO HERE (handshake)

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

    let sendToArduino = "0,0\n";

    writeSerial(sendToArduino);

  }

}

​