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2014/10/15 ¤U¤È 10:14:25

iphone Programming Glossary: startdevicemotionupdatestoqueue

Safe update interval for startDeviceMotionUpdatesToQueue:withHandler:?

http://stackoverflow.com/questions/11797857/safe-update-interval-for-startdevicemotionupdatestoqueuewithhandler

update interval for startDeviceMotionUpdatesToQueue withHandler EDIT added a global and now it's working. But I still have my doubts.. Please read on I want to get the acceleration.. motionManager CMMotionManager alloc init motionManager.deviceMotionUpdateInterval 0.03 update every 30ms motionManager startDeviceMotionUpdatesToQueue NSOperationQueue mainQueue withHandler ^ CMDeviceMotion motion NSError error myAcceleration motion.userAcceleration.y..

Using quaternion instead of roll, pitch and yaw to track device motion

http://stackoverflow.com/questions/19239482/using-quaternion-instead-of-roll-pitch-and-yaw-to-track-device-motion

Here is the code i am working on In the ViewController.m within the image didFinishSavingWithError self.motionManager startDeviceMotionUpdatesToQueue NSOperationQueue mainQueue withHandler ^ CMDeviceMotion motion NSError error CMQuaternion quat self.motionManager.deviceMotion.attitude.quaternion..

Actual frequency of device motion updates lower than expected, but scales up with setting

http://stackoverflow.com/questions/5034411/actual-frequency-of-device-motion-updates-lower-than-expected-but-scales-up-wit

motionHandler ^ CMDeviceMotion motion NSError error self processMotion motion withError error motionManager startDeviceMotionUpdatesToQueue NSOperationQueue currentQueue withHandler motionHandler This works but the update interval doesn't behave as expected. I've..

Simple iPhone motion detect

http://stackoverflow.com/questions/5214197/simple-iphone-motion-detect

is because every rotation results in accelerometer signals as well. Create a CMDeviceMotionHandler as described in startDeviceMotionUpdatesToQueue withHandler Your CMDeviceMotionHandler should do something like float accelerationThreshold 0.2 or whatever is appropriate..

Store orientation to an array - and compare

http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare

that the user should be able to replicate the same movement. I extract the pitch roll and yaw using self.motionManager startDeviceMotionUpdatesToQueue NSOperationQueue currentQueue withHandler ^ CMDeviceMotion motion NSError error CMAttitude attitude motion.attitude NSLog..