// Variance
int numBall = 20;
Ball[] maru = new Ball[numBall];
int[][] iro = new int[numBall][3];

void setup() {
  size(400, 400);      //window
  background(0, 0, 0); //black
  noStroke();    //lineless
  
  for (int i = 0; i < numBall; i++) {
    for (int j=0; j<3; j++ ) {
      iro[i][j] = (int)(random(1)*255);
    }
    maru[i] = new Ball(200*random(-1,1)+200, 200*random(-1,1)+200, 20, iro[i]); 
  }
}

void draw(){ 
  for (int i = 0; i < numBall; i++) {
      maru[i].display();
  }
}


class Ball{
  float px, py;    //position
  float vx, vy;    //velocity
  float dia;       //diameter
  int[] col = {};
 
  Ball(float x, float y, float d) {
     px = x; py = y; dia = d;
  }
 
  Ball(float x, float y, float d, int[] c) {
     px = x; py = y; dia = d;
     col = c;
  }

 void display() {
     fill(col[0], col[1], col[2]);
     ellipse(px, py, dia, dia);
  }

  void display(int[] col) {
     fill(col[0],  col[1],  col[2]);
     ellipse(px, py, dia, dia);
  }
}