コアモーションでのジャイロスコープの更新

Question

私はコアモーションには新しく、満足のいく答えがないまま多くの検索を行った後、誰かが私を助けてくれるかどうか確認するためにここに問題を投稿することにしました。 私はiPhoneのジャイロスコープからのヨー角を取得しようとしている：

motionManager = [[CMMotionManager alloc] init]; 

    if (motionManager.gyroAvailable) { 

     motionManager.gyroUpdateInterval = 1.0/60.0; 
     [motionManager 
     startDeviceMotionUpdatesUsingReferenceFrame:CMAttitudeReferenceFrameXArbitraryZVertical 
     toQueue:[NSOperationQueue currentQueue] 
     withHandler: ^(CMDeviceMotion *motion, NSError *error) { 

      CMAttitude *attitude = motion.attitude; 
      NSLog(@"%f %f %f", attitude.roll, attitude.pitch, attitude.yaw); 

     }]; 

    } else { 
     NSLog(@"No gyroscope on device."); 
    } 

このコードが印刷さに関係なく、携帯電話の向きのほぼ一定の値、：

2012-02-06 17:38:29.074 test[11279:707] 0.284117 0.536363 -0.078897 
2012-02-06 17:38:29.517 test[11279:707] 0.282726 0.535011 -0.079389 
2012-02-06 17:38:30.145 test[11279:707] 0.281268 0.535169 -0.080593 
2012-02-06 17:38:30.887 test[11279:707] 0.282435 0.543171 -0.084084 
2012-02-06 17:38:31.671 test[11279:707] 0.281040 0.547520 -0.086938 
2012-02-06 17:38:31.852 test[11279:707] 0.279655 0.553691 -0.090453 
2012-02-06 17:38:32.512 test[11279:707] 0.279519 0.561513 -0.095231 
2012-02-06 17:38:32.613 test[11279:707] 0.278557 0.567429 -0.099968 
2012-02-06 17:38:32.717 test[11279:707] 0.279050 0.574920 -0.105910 
2012-02-06 17:38:33.317 test[11279:707] 0.280330 0.583690 -0.112861 
2012-02-06 17:38:34.086 test[11279:707] 0.281029 0.592159 -0.120220 
2012-02-06 17:38:34.784 test[11279:707] 0.280887 0.599839 -0.127748 
2012-02-06 17:38:35.407 test[11279:707] 0.280940 0.606983 -0.135865 
2012-02-06 17:38:36.025 test[11279:707] 0.280652 0.612754 -0.144395 
2012-02-06 17:38:36.651 test[11279:707] 0.279496 0.616934 -0.153258 
2012-02-06 17:38:37.251 test[11279:707] 0.277919 0.619977 -0.162749 
2012-02-06 17:38:37.856 test[11279:707] 0.274963 0.621073 -0.171352 
2012-02-06 17:38:38.446 test[11279:707] 0.272552 0.621618 -0.179002 
2012-02-06 17:38:39.086 test[11279:707] 0.269863 0.621692 -0.184768 
2012-02-06 17:38:39.749 test[11279:707] 0.265449 0.620685 -0.187640 
2012-02-06 17:38:40.015 test[11279:707] 0.256092 0.614860 -0.186004 
2012-02-06 17:38:40.547 test[11279:707] 0.252883 0.613316 -0.186697 
2012-02-06 17:38:41.314 test[11279:707] 0.237640 0.600663 -0.179584 
2012-02-06 17:38:42.064 test[11279:707] 0.228467 0.593559 -0.175179 
2012-02-06 17:38:42.627 test[11279:707] 0.225964 0.591553 -0.173761 
2012-02-06 17:38:43.299 test[11279:707] 0.219047 0.585079 -0.169377 
2012-02-06 17:38:43.857 test[11279:707] 0.213861 0.578946 -0.165632 
2012-02-06 17:38:44.466 test[11279:707] 0.212410 0.575619 -0.163787 
2012-02-06 17:38:45.122 test[11279:707] 0.209166 0.568359 -0.161083 
2012-02-06 17:38:45.640 test[11279:707] 0.205685 0.560641 -0.158335 
2012-02-06 17:38:46.196 test[11279:707] 0.203486 0.556160 -0.156266 
2012-02-06 17:38:46.680 test[11279:707] 0.200355 0.548807 -0.153427 
2012-02-06 17:38:47.139 test[11279:707] 0.196721 0.541516 -0.150096 
2012-02-06 17:38:47.603 test[11279:707] 0.193479 0.534318 -0.146664 
2012-02-06 17:38:48.953 test[11279:707] 0.190706 0.528044 -0.143307 
2012-02-06 17:38:49.420 test[11279:707] 0.188027 0.521882 -0.140167 
2012-02-06 17:38:49.891 test[11279:707] 0.186110 0.518000 -0.137604 
2012-02-06 17:38:50.772 test[11279:707] 0.183170 0.511420 -0.134743 
2012-02-06 17:38:51.235 test[11279:707] 0.180418 0.504996 -0.132144 
2012-02-06 17:38:51.698 test[11279:707] 0.177734 0.498595 -0.129568 
2012-02-06 17:38:52.154 test[11279:707] 0.175299 0.492050 -0.127031 
2012-02-06 17:38:52.624 test[11279:707] 0.172230 0.485532 -0.124196 
2012-02-06 17:38:53.081 test[11279:707] 0.170063 0.481812 -0.122000 
2012-02-06 17:38:53.583 test[11279:707] 0.166253 0.476152 -0.119293 
2012-02-06 17:38:54.025 test[11279:707] 0.160787 0.468770 -0.116094 
2012-02-06 17:38:54.482 test[11279:707] 0.158701 0.466625 -0.114797 
2012-02-06 17:38:54.940 test[11279:707] 0.155296 0.462999 -0.113401 
2012-02-06 17:38:55.456 test[11279:707] 0.152151 0.460157 -0.112659 
2012-02-06 17:38:55.492 test[11279:707] 0.150581 0.459592 -0.112931 
2012-02-06 17:38:55.614 test[11279:707] 0.148270 0.457763 -0.112954 
2012-02-06 17:38:56.004 test[11279:707] 0.147790 0.455452 -0.113850 
2012-02-06 17:38:56.505 test[11279:707] 0.146853 0.455745 -0.114760 
2012-02-06 17:38:56.984 test[11279:707] 0.146299 0.453550 -0.116355 
2012-02-06 17:38:57.482 test[11279:707] 0.144864 0.450247 -0.118949 
2012-02-06 17:38:57.949 test[11279:707] 0.141946 0.450065 -0.122539 
2012-02-06 17:38:58.414 test[11279:707] 0.138981 0.448612 -0.127861 
2012-02-06 17:38:59.003 test[11279:707] 0.135581 0.449638 -0.134634 
2012-02-06 17:38:59.484 test[11279:707] 0.131823 0.452456 -0.142817 
2012-02-06 17:39:00.034 test[11279:707] 0.127508 0.456594 -0.152322 
2012-02-06 17:39:00.191 test[11279:707] 0.122910 0.462254 -0.163025 
2012-02-06 17:39:00.207 test[11279:707] 0.118614 0.469168 -0.175117 
2012-02-06 17:39:00.578 test[11279:707] 0.114704 0.477054 -0.188226 
2012-02-06 17:39:00.616 test[11279:707] 0.110742 0.486018 -0.201588 
2012-02-06 17:39:00.748 test[11279:707] 0.106248 0.495900 -0.214898 
2012-02-06 17:39:01.665 test[11279:707] 0.102002 0.506241 -0.228094 
2012-02-06 17:39:02.336 test[11279:707] 0.099557 0.514980 -0.239528 
2012-02-06 17:39:02.407 test[11279:707] 0.098438 0.520571 -0.247081 
2012-02-06 17:39:02.495 test[11279:707] 0.097672 0.523262 -0.250384 
2012-02-06 17:39:02.552 test[11279:707] 0.097222 0.524001 -0.250785 
2012-02-06 17:39:02.922 test[11279:707] 0.097418 0.523620 -0.249829 
2012-02-06 17:39:03.414 test[11279:707] 0.099227 0.521513 -0.249166 
2012-02-06 17:39:03.929 test[11279:707] 0.101716 0.519924 -0.249055 
2012-02-06 17:39:04.679 test[11279:707] 0.102946 0.519034 -0.248954 
2012-02-06 17:39:05.250 test[11279:707] 0.104410 0.518250 -0.250017 
2012-02-06 17:39:05.339 test[11279:707] 0.105101 0.518529 -0.251809 
2012-02-06 17:39:05.414 test[11279:707] 0.103954 0.517553 -0.253460 
2012-02-06 17:39:05.834 test[11279:707] 0.102850 0.517375 -0.255460 
2012-02-06 17:39:05.853 test[11279:707] 0.100568 0.516271 -0.256589 
2012-02-06 17:39:05.871 test[11279:707] 0.096929 0.513702 -0.256523 
2012-02-06 17:39:06.405 test[11279:707] 0.092045 0.510893 -0.255013 
2012-02-06 17:39:07.029 test[11279:707] 0.086092 0.507567 -0.252255 
2012-02-06 17:39:07.538 test[11279:707] 0.081380 0.504508 -0.249655 
2012-02-06 17:39:08.699 test[11279:707] 0.074794 0.500937 -0.246108 
2012-02-06 17:39:10.308 test[11279:707] 0.068511 0.497140 -0.243295 
2012-02-06 17:39:10.469 test[11279:707] 0.063528 0.493209 -0.241749 
2012-02-06 17:39:11.196 test[11279:707] 0.057956 0.487372 -0.240436 
2012-02-06 17:39:11.328 test[11279:707] 0.053526 0.481475 -0.240096 
2012-02-06 17:39:11.342 test[11279:707] 0.049141 0.475907 -0.239913 
2012-02-06 17:39:12.003 test[11279:707] 0.044934 0.470173 -0.239304 
2012-02-06 17:39:12.643 test[11279:707] 0.041000 0.464876 -0.238245 
2012-02-06 17:39:12.738 test[11279:707] 0.037876 0.461354 -0.237112 
2012-02-06 17:39:12.786 test[11279:707] 0.034908 0.458204 -0.235784 
2012-02-06 17:39:13.987 test[11279:707] 0.032735 0.456382 -0.234687 
2012-02-06 17:39:14.130 test[11279:707] 0.031751 0.454415 -0.234166 
2012-02-06 17:39:14.201 test[11279:707] 0.030873 0.452816 -0.233771 
2012-02-06 17:39:14.608 test[11279:707] 0.031080 0.450683 -0.233894 
2012-02-06 17:39:15.214 test[11279:707] 0.030725 0.447874 -0.233945 
2012-02-06 17:39:16.000 test[11279:707] 0.031100 0.444689 -0.234371 
2012-02-06 17:39:16.567 test[11279:707] 0.031405 0.440659 -0.234729 
2012-02-06 17:39:17.143 test[11279:707] 0.030912 0.436343 -0.234610 
2012-02-06 17:39:17.802 test[11279:707] 0.029276 0.432026 -0.233608 
2012-02-06 17:39:18.601 test[11279:707] 0.026838 0.428396 -0.232015 
2012-02-06 17:39:18.714 test[11279:707] 0.024792 0.425108 -0.230611 
2012-02-06 17:39:19.335 test[11279:707] 0.022407 0.421895 -0.229250 
2012-02-06 17:39:20.006 test[11279:707] 0.020278 0.418510 -0.228097 
2012-02-06 17:39:20.920 test[11279:707] 0.018179 0.414834 -0.227015 
2012-02-06 17:39:21.818 test[11279:707] 0.016243 0.410729 -0.225862 
2012-02-06 17:39:21.954 test[11279:707] 0.014359 0.406511 -0.224585 
2012-02-06 17:39:22.119 test[11279:707] 0.012452 0.402080 -0.223064 
2012-02-06 17:39:22.614 test[11279:707] 0.010601 0.397233 -0.221162 
2012-02-06 17:39:22.692 test[11279:707] 0.008699 0.392451 -0.218747 
2012-02-06 17:39:22.818 test[11279:707] 0.007168 0.388804 -0.216152 
2012-02-06 17:39:23.190 test[11279:707] 0.005118 0.384335 -0.213227 
2012-02-06 17:39:23.658 test[11279:707] 0.002705 0.380201 -0.210206 
2012-02-06 17:39:24.124 test[11279:707] 0.001094 0.377416 -0.207627 
2012-02-06 17:39:24.607 test[11279:707] -0.002178 0.373076 -0.204743 
2012-02-06 17:39:25.117 test[11279:707] -0.004245 0.369853 -0.202551 
2012-02-06 17:39:25.669 test[11279:707] -0.005570 0.367699 -0.200901 
2012-02-06 17:39:26.279 test[11279:707] -0.006612 0.364938 -0.199402 
2012-02-06 17:39:26.483 test[11279:707] -0.007071 0.362445 -0.197858 
2012-02-06 17:39:26.514 test[11279:707] -0.006780 0.360407 -0.196251 
2012-02-06 17:39:27.038 test[11279:707] -0.006128 0.359039 -0.194405 
2012-02-06 17:39:27.605 test[11279:707] -0.005377 0.358899 -0.192268 
2012-02-06 17:39:28.153 test[11279:707] -0.003901 0.359926 -0.190265 
2012-02-06 17:39:28.751 test[11279:707] -0.002602 0.361514 -0.188276 
2012-02-06 17:39:29.318 test[11279:707] -0.001312 0.363152 -0.186416 
2012-02-06 17:39:29.886 test[11279:707] 0.000524 0.364863 -0.184941 
2012-02-06 17:39:30.436 test[11279:707] 0.002012 0.366129 -0.183612 
2012-02-06 17:39:31.009 test[11279:707] 0.004049 0.366699 -0.182729 
2012-02-06 17:39:31.605 test[11279:707] 0.005820 0.367657 -0.181845 
kill 
quit 

を私がなぜこの見当がつかない理論上はラジアン（π/ 2は最大値で約1.57）の数値が与えられるはずです。

読んでいただきありがとうございます。

AA

Answer 1

motionManager= [[CMMotionManager alloc] init]; 

    if (motionManager.gyroAvailable) { 

     motionManager.gyroUpdateInterval = 1.0/60.0; 
     [motionManager 
     startDeviceMotionUpdatesToQueue:[NSOperationQueue currentQueue] withHandler: ^(CMDeviceMotion *motion, NSError *error) { 

      CMAttitude *attitude = motion.attitude; 
      NSLog(@"%f %f %f", attitude.roll, attitude.pitch, attitude.yaw); 

     }]; 

私は、これは、少なくとも私のデバイス上で、動作する保証私のコードを試してみてください。 Min/Maxは-Pi/+ Pi

実際にはいくつかの変更を行った後でも、あなたのコードは私のデバイスで問題なく動作します。どのデバイスをテストしていますか？

Answer 2

は、新しいオペレーションキューを作成してみてください：

[motionManager startDeviceMotionUpdatesToQueue:[[[NSOperationQueue alloc] init] autorelease] withHandler: ^(CMDeviceMotion *motion, NSError *error) { ...

私のアプリは唯一の25 FPSで実行していたので、私はこれで問題が発生しました。