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2014/10/16 ¤W¤È 08:10:00

android Programming Glossary: angular

Android getOrientation() method returns bad results

http://stackoverflow.com/questions/10192057/android-getorientation-method-returns-bad-results

from accelerometer it doesn't work so great verbatim with angular variables fetched from your magnetometer. Why one might ask.. from your magnetometer. Why one might ask Because those angular variables azimuth pitch roll have an upper bound and a lower.. wrap around in the other direction. So when one of those angular variables get close to those thresholds 180 or 180 this variable..

Gyroscope Issues with Device Orientation

http://stackoverflow.com/questions/14310347/gyroscope-issues-with-device-orientation

private SensorManager mSensorManager null angular speeds from gyro private float gyro new float 3 rotation matrix.. It calculates a rotation vector from the gyroscope angular speed values. private void getRotationVectorFromGyro float gyroValues.. timeFactor float normValues new float 3 Calculate the angular speed of the sample float omegaMagnitude float Math.sqrt gyroValues..

Android Compass that can Compensate for Tilt and Pitch

http://stackoverflow.com/questions/16317599/android-compass-that-can-compensate-for-tilt-and-pitch

math.stackexchange.com questions 381649 whats the best 3d angular co ordinate system for working with smartfone apps float sin..

How do you create a loadable kernel module for Android?

http://stackoverflow.com/questions/6282669/how-do-you-create-a-loadable-kernel-module-for-android

linux module.h #include linux kernel.h replace the with angular brackets int init_module void printk KERN_INFO Hello android..

Android TYPE_LINEAR_ACCELERATION sensor - what does it show?

http://stackoverflow.com/questions/7858759/android-type-linear-acceleration-sensor-what-does-it-show

and only the gyroscope. Like above it returns raw events angular speed un rad s with no processing at all no offset scale compensation..

Android getOrientation() method returns bad results

http://stackoverflow.com/questions/10192057/android-getorientation-method-returns-bad-results

value which varies without discontinuities such as raw data from accelerometer it doesn't work so great verbatim with angular variables fetched from your magnetometer. Why one might ask Because those angular variables azimuth pitch roll have an upper.. doesn't work so great verbatim with angular variables fetched from your magnetometer. Why one might ask Because those angular variables azimuth pitch roll have an upper bound and a lower bound which means that any value above 180 degrees say 181.. 181 360 179 degrees and any variable below 180 degrees would wrap around in the other direction. So when one of those angular variables get close to those thresholds 180 or 180 this variable will tend to oscillate to values close to those 2 extremes...

Gyroscope Issues with Device Orientation

http://stackoverflow.com/questions/14310347/gyroscope-issues-with-device-orientation

extends SherlockActivity implements SensorEventListener private SensorManager mSensorManager null angular speeds from gyro private float gyro new float 3 rotation matrix from gyro data private float gyroMatrix new float 9 orientation.. reference android hardware SensorEvent.html#values It calculates a rotation vector from the gyroscope angular speed values. private void getRotationVectorFromGyro float gyroValues float deltaRotationVector float timeFactor float.. float gyroValues float deltaRotationVector float timeFactor float normValues new float 3 Calculate the angular speed of the sample float omegaMagnitude float Math.sqrt gyroValues 0 gyroValues 0 gyroValues 1 gyroValues 1 gyroValues..

Android Compass that can Compensate for Tilt and Pitch

http://stackoverflow.com/questions/16317599/android-compass-that-can-compensate-for-tilt-and-pitch

the required angles from the rotation matrix NB see http math.stackexchange.com questions 381649 whats the best 3d angular co ordinate system for working with smartfone apps float sin m_NormEastVector 1 m_NormNorthVector 0 cos m_NormEastVector..

How do you create a loadable kernel module for Android?

http://stackoverflow.com/questions/6282669/how-do-you-create-a-loadable-kernel-module-for-android

03 21 77 Or reproduced as follows android_module.c #include linux module.h #include linux kernel.h replace the with angular brackets int init_module void printk KERN_INFO Hello android kernel... n return 0 void cleanup_module void printk KERN_INFO..

Android TYPE_LINEAR_ACCELERATION sensor - what does it show?

http://stackoverflow.com/questions/7858759/android-type-linear-acceleration-sensor-what-does-it-show

at all. TYPE_GYROSCOPE if present uses the gyroscope and only the gyroscope. Like above it returns raw events angular speed un rad s with no processing at all no offset scale compensation . TYPE_ORIENTATION is deprecated. It returns the orientation..