cmmotionmanager - Measuring tilt with left, right, forward and backward in ios -

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i want find tilt in side (left, right, forward, backward)

i have use below code find left , right 

[motionmanager startdevicemotionupdatestoqueue:[nsoperationqueue mainqueue] withhandler:^(cmdevicemotion *devicemotion, nserror *error)         {             if (devicemotion.attitude.roll <= -1)             {                 [self tiltcontrol:@"left"];             }             else if(devicemotion.attitude.roll > 1)             {                 [self tiltcontrol:@"right"];             }         }];

now how can find forward , backward...

what best way find 4 tilt...

just use attitude.pitch property:

if(devicemotion.attitude.pitch > 0 ) {     nslog(@"forward"); } else if(devicemotion.attitude.pitch < 0) {     nslog(@"backward"); }

there rotation around z axis, available attitude.yaw. credits nshipster.


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