Function SineWave

endless-tunnel/app/src/main/cpp/util.cpp:48–51

}

float SineWave(float min, float max, float period, float phase) {
  float ampl = max - min;
  return min + ampl * sin(((Clock() / period) + phase) * 2 * M_PI);
}

bool BlinkFunc(float period) { return (int)(Clock() / period) & 1; }