sketch 001

int counter;

float x = 250;

float y = 250;

float r = 10;

float step = 20;

float life = 255;

float h = 0;

​

void setup() {  //setup function called initially, only once

  size(500, 500);

  background(h);  //set background white

  colorMode(HSB);   //set colors to Hue, Saturation, Brightness mode  

  reset();

}

​

void draw() {  //draw function loops 

  stroke(h,255,life);

  strokeWeight(life/5);

  noFill();

  ellipse(x,y,life,life);

  //step=life/5;

  x+=random(step)-step/2;

  y+=random(step)-step/2;

  r+=random(2)-1;

  if(r<=0){

      r=1;

  }

  life--;

  if(life<=-90){

  reset();

  }

}

void reset(){

life=255;

x = 250;

y = 250;

h=random(255)

background(h,255,life);

}