float a=0, da=0.05;    // drawing angle and increment

void setup()
{
  size(300,300);
  rectMode(CENTER);
  smooth();
}

void draw()
{
  background(0);
  translate(width/2,height/2);
  rotate(a);
  rect(0,0,200,10);
  a+=da;
}

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