float  A, B, C = .1;
int    SCALE;
float  SPEED = 1;

void setup()
{
  size(500, 500);
  frameRate(30);

  SCALE = int(width / 2.5);

  stroke(127, 255, 0);
  noFill(); 
  noStroke();
  smooth();
}

void draw()
{
  background(0, 63, 63);
  
  int     W = width / 2, H = height / 2;

  beginShape();
  curveVertex(W + X(0.0), H + Y(0.0));
  for (float i = 0.0; i < PI; i += 0.12)
  {
    float x = X(i);
    float y = Y(i);
    float d = 127 + 127 * sin(i);
    float r = 8 * (i + 1);

    stroke(d);
    curveVertex(W + x, H + y);
    fill(255, map(i, 0, PI, 0, 127));
    ellipse(W + x, H + y, r, r);
    noFill();
  }
  curveVertex(W + X(PI), H + Y(PI));
  endShape();
}

float X(float i)
{ 
  float  u = i + radians(frameCount * SPEED);

  return SCALE * (sin(u) + sin(20 * u) / 10); 
}

float Y(float i)
{ 
  float  u = i + radians(frameCount * SPEED);
  
  return SCALE * (cos(u) + cos(20 * u) / 10); 
}