#import "ViewController.h"
#import <CoreMotion/CoreMotion.h>

@interface ViewController ()

@property (strong, nonatomic) CMMotionManager *manager;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];

    _manager = [[CMMotionManager alloc] init];

    if ([_manager isGyroAvailable] == NO
 
) {
        NSLog(@"陀螺儀不能用");
        return;
    }

    // GRYO
    // 獲取陀螺儀資料的時間間隙
    _manager.gyroUpdateInterval = 0.5;

    // Pull 與 Push 方式
    [self pushTest];
}

#pragma mark - Pull方式

- (IBAction)startBtnAction:(UIButton *)sender
{
    if ([self.manager isGyroActive] == NO) {
        [self.manager
 
 startGyroUpdates];
    }
}

- (IBAction)pullBtnAction:(UIButton *)sender
{
    CMGyroData *data = [self.manager gyroData];
    CMRotationRate rate = data.rotationRate;

    NSLog(@"%f, %f, %f", rate.x, rate.y, rate.z);
}


- (IBAction)stopBtnAction:(UIButton *)sender
{
    if ([self.manager isGyroActive] == YES
 
) {
        [self.manager stopGyroUpdates];
    }
}

#pragma mark Push方式

- (void)pushTest
{
    [_manager startGyroUpdatesToQueue:[NSOperationQueue mainQueue] withHandler:^(CMGyroData * _Nullable gyroData, NSError * _Nullable error) {

        // CMRotationRate 陀螺儀資料的結構體
        CMRotationRate rate = gyroData.rotationRate;
        NSLog(@"%f, %f, %f", rate.x, rate.y, rate.z);
    }];
}

@end