void setup() {
size (500, 500);
smooth();
}
void draw() {

background(0);
noFill();

int d=((millis()/80) % 1000)*4;


stroke(random(0), random(0), random(255), 20);
circle(width/2, height/2, d*2);
noFill();
stroke(random(255), random(0), random(0), 20);
circle2(width/3, height/3, d*2);
noFill();
stroke(random(0), random(255), random(0), 20);
circle3(width/3, height-165, d*2);
noFill();
stroke(random(255), random(0), random(0), 20);
circle4(width-160, height-165, d*2);
noFill();
stroke(random(0), random(255), random(0), 20);
circle5(width-160, height/3, d*2);
//noLoop();
}

void circle(float x,float y,float r) { 
if(r>15) {
ellipse(x,y,r,r);
circle(x,y,r/2);
circle(x,y,r/3);
circle(x,y,r/4);
circle(x,y,r/5);
}
}
void circle2(float x2,float y2,float r2) {
if(r2>15) {
ellipse(x2,y2,r2,r2);
circle(x2,y2,r2/2);
circle(x2,y2,r2/3);
circle(x2,y2,r2/4);
circle(x2,y2,r2/5);
}
}
void circle3(float x3,float y3,float r3) {
if(r3>15) {
ellipse(x3,y3,r3,r3);
circle(x3,y3,r3/2);
circle(x3,y3,r3/3);
circle(x3,y3,r3/4);
circle(x3,y3,r3/5);
}
}
void circle4(float x4,float y4,float r4) {
if(r4>15) {
ellipse(x4,y4,r4,r4);
circle(x4,y4,r4/2);
circle(x4,y4,r4/3);
circle(x4,y4,r4/4);
circle(x4,y4,r4/5);
}
}
void circle5(float x5,float y5,float r5) {
if(r5>15) {
ellipse(x5,y5,r5,r5);
circle(x5,y5,r5/2);
circle(x5,y5,r5/3);
circle(x5,y5,r5/4);
circle(x5,y5,r5/5);
}
}