2014/10/15 下午 10:05:49

iphone Programming Glossary: currentpressurevalueindex

Tap pressure strength detection using accelerometer

http://stackoverflow.com/questions/5179426/tap-pressure-strength-detection-using-accelerometer

float pressure float minimumPressureRequired float maximumPressureRequired @private float pressureValues 30 uint currentPressureValueIndex uint setNextPressureValue @property readonly assign float pressure @property readwrite assign float minimumPressureRequired.. acceleration int sz sizeof pressureValues sizeof pressureValues 0 set current pressure value pressureValues currentPressureValueIndex sz acceleration.z if setNextPressureValue 0 calculate average pressure float total 0.0f for int loop 0 loop sz loop total.. most recent past pressure sample if setNextPressureValue KNumberOfPressureSamples float mostRecent pressureValues currentPressureValueIndex 1 sz pressure fabsf average mostRecent caluculate pressure as difference between average and current acceleration float..

Tap pressure strength detection using CPBPressureTouchGestureRecognizer

http://stackoverflow.com/questions/8079580/tap-pressure-strength-detection-using-cpbpressuretouchgesturerecognizer

float pressure float minimumPressureRequired float maximumPressureRequired @private float pressureValues 50 uint currentPressureValueIndex uint setNextPressureValue @property readonly assign float pressure @property readwrite assign float minimumPressureRequired.. acceleration int sz sizeof pressureValues sizeof pressureValues 0 set current pressure value pressureValues currentPressureValueIndex sz acceleration.z if setNextPressureValue 0 calculate average pressure float total 0.0f for int loop 0 loop sz loop total.. most recent past pressure sample if setNextPressureValue KNumberOfPressureSamples float mostRecent pressureValues currentPressureValueIndex 1 sz pressure fabsf average mostRecent caluculate pressure as difference between average and current acceleration float..