void mousePressed()
{
  if (mouseButton == LEFT) {
    if (sourceManager.dir != null) {
      sourceManager.importURI(sourceManager.dir + "/" + sourceManager.selection[(int)random(sourceManager.selection.length)]);
    }
  }
  if (mouseButton == RIGHT) {
    snapshot();
  }
}
void mouseWheel(MouseEvent event) {

  if (event.getCount() < 0) renderSize += 8;
  else renderSize -= 8;
  renderSize = constrain(renderSize, 8, 15000);
}
