Squig - OpenProcessing

mySketch
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//Dana Hoppe
//Squiggle Paint Brush
//6-7-2019
​
//List for storing squiggles
let squigs = [];
​
function setup() {
  createCanvas(windowWidth, windowHeight);
  background(255);
}
​
function draw() {
  //updates squiggle movement
  for (i = 0; i < squigs.length; i ++){
    squigs[i].update();
    squigs[i].show();
    //removes finished squiggles
    if(squigs[i].r < 1){
      squigs.splice(i, 1);
    }
  }
}
​
function mouseDragged() {
  //adds new squiggles
  squig = new squiggle(mouseX,mouseY);
  squigs.push(squig);
}
​
class squiggle {
  constructor(x,y) {
    this.x = x;
    this.y = y;
    //initial radius
    this.r = 200;
    //initial degree of movement
    this.p = 20;
    
    //generates initial value for noise movement
    this.offsetX =  random(0,100);
    this.offsetY = random(0,100);
  }
  
  update() {
    if(this.r > 1){
      //controls how much the radius changes
      this.r -= .5;
      //control how much the degree of movement changes
      this.p -= .05;
      
      this.x += map(noise(this.offsetX), 0, 1, -this.p, this.p);
      this.y += map(noise(this.offsetY), 0, 1, -this.p, this.p);
      
      //controls how quickly the direction changes
      this.offsetX += .1;
      this.offsetY += .1;
    }
  }
  
  show() {
    //draws current layer on screen
    strokeWeight(.5);
    fill(map(noise(this.offsetX), 0, 1, 0, 255),0,map(noise(this.offsetY), 0, 1, 0, 255));
    ellipse(this.x,this.y, this.r, this.r);
  }
}