Suspicious behavior

//Suspicious behavior

//Hayato Nakayama

​

let num = 300;

let vecLocation = [];

let vecVelocity = [];

let vecDiameter = [];

let vecColor = [];

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  frameRate(40);

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

    vecLocation[i] = createVector(width / 2, height / 2);

    vecVelocity[i] = createVector(random(-10, 10),random(-10, 10));

    vecDiameter[i] = createVector(random(10,40));

    vecColor[i] = createVector(random(255), random(255), random(255));

  }

}

​

function draw() {

  background(0);

  noStroke();

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

    fill(vecColor[i].x,vecColor[i].y, vecColor[i].z);

    vecVelocity[i] = createVector(random(-15, 15),random(-15, 15));

    vecLocation[i].add(vecVelocity[i]);

    ellipse(vecLocation[i].x, vecLocation[i].y, vecDiameter[i].x, vecDiameter[i].x);

    if(vecLocation[i].x < 0 || vecLocation[i].x > width){

      vecVelocity[i].x *= -1;

    }

    if(vecLocation[i].y < 0 || vecLocation[i].y > height){

      vecVelocity[i].y *= -1;

    }

  }

}