Java Script Code

var points =[];
var mult = 0.005;

function setup() {
  createCanvas(800, 800);
  background(30);
  angleMode(DEGREES);
  noiseDetail(1);
 frameRate(30);
  
  var density = 50;
  var space = width / density;
  
  for (var x=0; x < width; x+= space){
   for (var y =0; y< height; y+=space){
     var p = createVector(x + random(-10,10), y + random(-10,10));
     points.push(p);
     
   } 
  }
}

function draw() {
  noStroke();
  
if (mouseIsPressed){
  for (var i =0; i < points.length; i++){
    var r = map(points[i].x, 0, width, 50, 255);
    var g = map(points[i].y, 0, height, 50, 255);
    var b = map(points[i].x, 0, width, 255, 50);
    var alpha = map(dist(width/ 5, height/ 3, points[i].x, points[i].y), 0, 350, 255, 0)
    
    fill(r,g,b, alpha);
    
    var angle = map(noise(points[i].x * mult, points[i].y * mult), 0, 1, 0, 720);
    points[i].add(createVector(cos(angle), sin(angle)));
    if (dist(width/2, height/2, points[i].x, points[i].y)<200){
    ellipse(points[i].x, points[i].y, 1);
        }
      }
    }
  }