3.5 // Radians/sec func processDeviceMotion(_ deviceMotion: CMDeviceMotion) { let rotationRate = deviceMotion.rotationRate let rateX = rotationRate.x // rateBuffer1ඵؒͷճసΛྻͰอ͍࣋ͯ͠Δ(50hzͳͷͰ50Πϕϯτ) rateBuffer.addSample(rateX) if !rateBuffer.isFull() { return } let accumulatedPitchRot = rateBuffer.sum() / 50 let peakRate = accumulatedPitchRot > 0 ? rateAlongGravityBuffer.max() : rateAlongGravityBuffer.min() if (accumulatedPitchRot > pitchThreshold && peakRate > rateThreshold) { incrementCountAndUpdateDelegate() } if (recentDetection && abs(rateBuffer.recentMean()) < resetThreshold) { recentDetection = false rateAlongGravityBuffer.reset() } }