| /* |
| * Copyright (C) 2010 Apple Inc. All Rights Reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #import "config.h" |
| #import "WebCoreMotionManager.h" |
| |
| #if PLATFORM(IOS_FAMILY) && ENABLE(DEVICE_ORIENTATION) |
| |
| #import "DeviceMotionClientIOS.h" |
| #import "MotionManagerClient.h" |
| #import "WebCoreObjCExtras.h" |
| #import "WebCoreThreadRun.h" |
| #import <CoreLocation/CoreLocation.h> |
| #import <CoreMotion/CoreMotion.h> |
| #import <objc/objc-runtime.h> |
| #import <wtf/MathExtras.h> |
| #import <wtf/SoftLinking.h> |
| |
| // Get CoreLocation classes |
| SOFT_LINK_FRAMEWORK(CoreLocation) |
| |
| SOFT_LINK_CLASS(CoreLocation, CLLocationManager) |
| SOFT_LINK_CLASS(CoreLocation, CLHeading) |
| |
| // Get CoreMotion classes |
| SOFT_LINK_FRAMEWORK(CoreMotion) |
| |
| SOFT_LINK_CLASS(CoreMotion, CMMotionManager) |
| SOFT_LINK_CLASS(CoreMotion, CMAccelerometerData) |
| SOFT_LINK_CLASS(CoreMotion, CMDeviceMotion) |
| |
| static const double kGravity = 9.80665; |
| |
| @interface WebCoreMotionManager(Private) |
| |
| - (void)initializeOnMainThread; |
| - (void)checkClientStatus; |
| - (void)update; |
| - (void)sendAccelerometerData:(CMAccelerometerData *)newAcceleration; |
| - (void)sendMotionData:(CMDeviceMotion *)newMotion withHeading:(CLHeading *)newHeading; |
| |
| @end |
| |
| @implementation WebCoreMotionManager |
| |
| + (WebCoreMotionManager *)sharedManager |
| { |
| static WebCoreMotionManager *sharedMotionManager = [[WebCoreMotionManager alloc] init]; |
| return sharedMotionManager; |
| } |
| |
| - (id)init |
| { |
| self = [super init]; |
| if (self) |
| [self performSelectorOnMainThread:@selector(initializeOnMainThread) withObject:nil waitUntilDone:NO]; |
| |
| return self; |
| } |
| |
| - (void)dealloc |
| { |
| if (WebCoreObjCScheduleDeallocateOnMainThread([WebCoreMotionManager class], self)) |
| return; |
| |
| ASSERT(!m_updateTimer); |
| |
| if (m_headingAvailable) |
| [m_locationManager stopUpdatingHeading]; |
| [m_locationManager release]; |
| |
| if (m_gyroAvailable) |
| [m_motionManager stopDeviceMotionUpdates]; |
| else |
| [m_motionManager stopAccelerometerUpdates]; |
| [m_motionManager release]; |
| |
| [super dealloc]; |
| } |
| |
| - (void)addMotionClient:(WebCore::DeviceMotionClientIOS *)client |
| { |
| m_deviceMotionClients.add(client); |
| if (m_initialized) |
| [self checkClientStatus]; |
| } |
| |
| - (void)removeMotionClient:(WebCore::DeviceMotionClientIOS *)client |
| { |
| m_deviceMotionClients.remove(client); |
| if (m_initialized) |
| [self checkClientStatus]; |
| } |
| |
| - (void)addOrientationClient:(WebCore::MotionManagerClient *)client |
| { |
| m_deviceOrientationClients.add(*client); |
| if (m_initialized) |
| [self checkClientStatus]; |
| } |
| |
| - (void)removeOrientationClient:(WebCore::MotionManagerClient *)client |
| { |
| m_deviceOrientationClients.remove(*client); |
| if (m_initialized) |
| [self checkClientStatus]; |
| } |
| |
| - (BOOL)gyroAvailable |
| { |
| return m_gyroAvailable; |
| } |
| |
| - (BOOL)headingAvailable |
| { |
| return m_headingAvailable; |
| } |
| |
| - (void)initializeOnMainThread |
| { |
| ASSERT(!WebThreadIsCurrent()); |
| |
| m_motionManager = [allocCMMotionManagerInstance() init]; |
| |
| m_gyroAvailable = m_motionManager.deviceMotionAvailable; |
| |
| if (m_gyroAvailable) |
| m_motionManager.deviceMotionUpdateInterval = kMotionUpdateInterval; |
| else |
| m_motionManager.accelerometerUpdateInterval = kMotionUpdateInterval; |
| |
| m_locationManager = [allocCLLocationManagerInstance() init]; |
| m_headingAvailable = [getCLLocationManagerClass() headingAvailable]; |
| |
| m_initialized = YES; |
| |
| [self checkClientStatus]; |
| } |
| |
| - (void)checkClientStatus |
| { |
| if (!pthread_main_np()) { |
| [self performSelectorOnMainThread:_cmd withObject:nil waitUntilDone:NO]; |
| return; |
| } |
| |
| // Since this method executes on the main thread, it should always be called |
| // after the initializeOnMainThread method has run, and hence there should |
| // be no chance that m_motionManager has not been created. |
| ASSERT(m_motionManager); |
| |
| if (m_deviceMotionClients.size() || m_deviceOrientationClients.computeSize()) { |
| if (m_gyroAvailable) |
| [m_motionManager startDeviceMotionUpdates]; |
| else |
| [m_motionManager startAccelerometerUpdates]; |
| |
| if (m_headingAvailable) |
| [m_locationManager startUpdatingHeading]; |
| |
| if (!m_updateTimer) { |
| m_updateTimer = [[NSTimer scheduledTimerWithTimeInterval:kMotionUpdateInterval |
| target:self |
| selector:@selector(update) |
| userInfo:nil |
| repeats:YES] retain]; |
| } |
| } else { |
| NSTimer *timer = m_updateTimer; |
| m_updateTimer = nil; |
| [timer invalidate]; |
| [timer release]; |
| |
| if (m_gyroAvailable) |
| [m_motionManager stopDeviceMotionUpdates]; |
| else |
| [m_motionManager stopAccelerometerUpdates]; |
| |
| if (m_headingAvailable) |
| [m_locationManager stopUpdatingHeading]; |
| } |
| } |
| |
| - (void)update |
| { |
| // It's extremely unlikely that an update happens without an active |
| // motion or location manager, but we should guard for this case just in case. |
| if (!m_motionManager || !m_locationManager) |
| return; |
| |
| // We should, however, guard for the case where the managers return nil data. |
| CMDeviceMotion *deviceMotion = m_motionManager.deviceMotion; |
| if (m_gyroAvailable && deviceMotion) |
| [self sendMotionData:deviceMotion withHeading:m_locationManager.heading]; |
| else { |
| if (CMAccelerometerData *accelerometerData = m_motionManager.accelerometerData) |
| [self sendAccelerometerData:accelerometerData]; |
| } |
| } |
| |
| - (void)sendAccelerometerData:(CMAccelerometerData *)newAcceleration |
| { |
| WebThreadRun(^{ |
| CMAcceleration accel = newAcceleration.acceleration; |
| |
| for (auto& client : copyToVector(m_deviceMotionClients)) |
| client->motionChanged(0, 0, 0, accel.x * kGravity, accel.y * kGravity, accel.z * kGravity, 0, 0, 0); |
| }); |
| } |
| |
| - (void)sendMotionData:(CMDeviceMotion *)newMotion withHeading:(CLHeading *)newHeading |
| { |
| WebThreadRun(^{ |
| // Acceleration is user + gravity |
| CMAcceleration userAccel = newMotion.userAcceleration; |
| CMAcceleration gravity = newMotion.gravity; |
| CMAcceleration totalAccel; |
| totalAccel.x = userAccel.x + gravity.x; |
| totalAccel.y = userAccel.y + gravity.y; |
| totalAccel.z = userAccel.z + gravity.z; |
| |
| CMRotationRate rotationRate = newMotion.rotationRate; |
| |
| for (auto& client : copyToVector(m_deviceMotionClients)) |
| client->motionChanged(userAccel.x * kGravity, userAccel.y * kGravity, userAccel.z * kGravity, totalAccel.x * kGravity, totalAccel.y * kGravity, totalAccel.z * kGravity, rad2deg(rotationRate.x), rad2deg(rotationRate.y), rad2deg(rotationRate.z)); |
| |
| CMAttitude* attitude = newMotion.attitude; |
| |
| Vector<WeakPtr<MotionManagerClient>> orientationClients; |
| orientationClients.reserveInitialCapacity(m_deviceOrientationClients.computeSize()); |
| for (auto& client : m_deviceOrientationClients) |
| orientationClients.uncheckedAppend(makeWeakPtr(&client)); |
| |
| // Compose the raw motion data to an intermediate ZXY-based 3x3 rotation |
| // matrix (R) where [z=attitude.yaw, x=attitude.pitch, y=attitude.roll] |
| // in the form: |
| // |
| // / R[0] R[1] R[2] \ |
| // | R[3] R[4] R[5] | |
| // \ R[6] R[7] R[8] / |
| |
| double cX = cos(attitude.pitch); |
| double cY = cos(attitude.roll); |
| double cZ = cos(attitude.yaw); |
| double sX = sin(attitude.pitch); |
| double sY = sin(attitude.roll); |
| double sZ = sin(attitude.yaw); |
| |
| double R[] = { |
| cZ * cY - sZ * sX * sY, |
| - cX * sZ, |
| cY * sZ * sX + cZ * sY, |
| cY * sZ + cZ * sX * sY, |
| cZ * cX, |
| sZ * sY - cZ * cY * sX, |
| - cX * sY, |
| sX, |
| cX * cY |
| }; |
| |
| // Compute correct, normalized values for DeviceOrientation from |
| // rotation matrix (R) according to the angle conventions defined in the |
| // W3C DeviceOrientation specification. |
| |
| double zRot; |
| double xRot; |
| double yRot; |
| |
| if (R[8] > 0) { |
| zRot = atan2(-R[1], R[4]); |
| xRot = asin(R[7]); |
| yRot = atan2(-R[6], R[8]); |
| } else if (R[8] < 0) { |
| zRot = atan2(R[1], -R[4]); |
| xRot = -asin(R[7]); |
| xRot += (xRot >= 0) ? -M_PI : M_PI; |
| yRot = atan2(R[6], -R[8]); |
| } else { |
| if (R[6] > 0) { |
| zRot = atan2(-R[1], R[4]); |
| xRot = asin(R[7]); |
| yRot = -M_PI_2; |
| } else if (R[6] < 0) { |
| zRot = atan2(R[1], -R[4]); |
| xRot = -asin(R[7]); |
| xRot += (xRot >= 0) ? -M_PI : M_PI; |
| yRot = -M_PI_2; |
| } else { |
| zRot = atan2(R[3], R[0]); |
| xRot = (R[7] > 0) ? M_PI_2 : -M_PI_2; |
| yRot = 0; |
| } |
| } |
| |
| // Rotation around the Z axis (pointing up. normalized to [0, 360] deg). |
| double alpha = rad2deg(zRot > 0 ? zRot : (M_PI * 2 + zRot)); |
| // Rotation around the X axis (top to bottom). |
| double beta = rad2deg(xRot); |
| // Rotation around the Y axis (side to side). |
| double gamma = rad2deg(yRot); |
| |
| double heading = (m_headingAvailable && newHeading) ? newHeading.magneticHeading : 0; |
| double headingAccuracy = (m_headingAvailable && newHeading) ? newHeading.headingAccuracy : -1; |
| |
| for (size_t i = 0; i < orientationClients.size(); ++i) { |
| if (orientationClients[i]) |
| orientationClients[i]->orientationChanged(alpha, beta, gamma, heading, headingAccuracy); |
| } |
| }); |
| } |
| |
| @end |
| |
| #endif |
