// symnoise.pde
// From processing.unlekker.net


float x[],y[],x2[],y2[],r[],offs,D;
float cnt;
int num;

void setup () {
  size(500,400);
  num=160;
  x=new float[num];
  y=new float[num];
  x2=new float[num];
  y2=new float[num];
  r=new float[num];
  offs=0;
  D=0.02f;
  
  ellipseMode(CENTER_RADIUS);
  cnt=0;
}

void loop() {
  background(255*0.5f,100*0.5f,0);
  translate(width/2,height/2);
  noStroke();
  
  cnt+=1.5f;
  rotate(radians(cnt));
  for(int i=0; i<num; i++) {
    x[i]=noise((float)i*D)*width*0.65f;
    y[i]=noise(offs*2+(float)i*D*2)*width*0.65f;
    x2[i]=noise((float)i*D+10)*width*0.5f;
    y2[i]=noise(offs*2+(float)i*D*2+10)*width*0.5f;
    r[i]=noise(offs*3+(float)i*D*3)*15;
    
  }
  
  offs+=D;
  
  noFill();
  for(int j=0; j<5; j++) {
    rotate(radians(36));
    stroke(255,100,0, 100);
    for(int i=0; i<num; i++) 
      ellipse(x[i],y[i], r[i],r[i]);
    
    stroke(240, 100);
    rotate(radians(9));
    for(int i=0; i<num; i++) 
      ellipse(x2[i],y2[i], r[i]*0.6f,r[i]*0.6f);
    
    stroke(0,200,255, 100);
    stroke(80,0,0, 100);
    rotate(radians(27));
    for(int i=0; i<num; i++) 
      ellipse(y[i]*0.7f,x[i]*0.7f, r[i]*1.2f,r[i]*1.2f);
    noStroke();
  }
}