// Pause/play button, also starts and stops logic thread
public void toggleButton(View view) {
if (pausedState) {
imgBtn.setImageResource(R.drawable.stop);
drawSpace.startLogic();
pausedState = false;
} else {
imgBtn.setImageResource(R.drawable.play);
drawSpace.pauseLogic();
pausedState = true;
}
}
