record image sequence (start and stop)

pro_record_frames.pde

void draw() {
 // If we are recording call saveFrame!
  if (recording) {
    saveFrame("output/frames####.png");
  }
}

void keyPressed() {  
  // If we press r, start or stop recording!
  if (key == 'r' || key == 'R') {
    recording = !recording;
  }
}

/*
In addition, if you draw anything after saveFrame() 
it won’t actually appear in the output, but will be seen on screen. 
This is useful for debugging information 
that you don’t want included in the render.
*/

/*
void draw() {
 
  // Draw lots of stuff to be recorded!
  
  if (recording) {
    saveFrame("output/frames####.png");
  }
   
  // Draw our debugging stuff that won't be recorded!
}
*/