float x,y;   // center of circle
float angle=0, radius=0;    // spiral around center

void setup()
{
  size(300,300);
  background(0);
  smooth();
  noStroke();
}

void draw()
{
  fill(0,10);
  rect(0,0,width,height);
  fill(255);
  ellipse(x+radius*cos(angle), y+radius*sin(angle), 10,10);
  angle += radians(5);   // 5 degree increments
  radius += 0.2;
}

void mousePressed()
{
  x = mouseX; y = mouseY;
  angle = 0;
  radius = 0;
}

// START NO NOTES
// code used to capture screenshots
void keyReleased() {
  if(key == '`' && !online) save("sketch.png");
}