80 lines
2.9 KiB
Mathematica
80 lines
2.9 KiB
Mathematica
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// RCTSensorOrientationChecker.m
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// RCTCamera
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//
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// Created by Radu Popovici on 24/03/16.
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//
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//
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#import "RCTSensorOrientationChecker.h"
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#import <CoreMotion/CoreMotion.h>
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@interface RCTSensorOrientationChecker ()
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@property (strong, nonatomic) CMMotionManager * motionManager;
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@end
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@implementation RCTSensorOrientationChecker
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- (void)getDeviceOrientation:(void(^)(UIInterfaceOrientation orientation))callback
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{
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self.motionManager = [[CMMotionManager alloc] init];
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self.motionManager.accelerometerUpdateInterval = DBL_MAX; // infinite delay, never update
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self.motionManager.gyroUpdateInterval = DBL_MAX;
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__weak CMMotionManager * weakMotionManager = self.motionManager;
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__weak __typeof(self) weakSelf = self;
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[self.motionManager startAccelerometerUpdatesToQueue:[NSOperationQueue new]
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withHandler:^(CMAccelerometerData *accelerometerData, NSError *error) {
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// stop after the first sample
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[weakMotionManager stopAccelerometerUpdates];
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UIInterfaceOrientation deviceOrientation = UIInterfaceOrientationUnknown;
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if (!error) {
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deviceOrientation = [weakSelf getOrientationBy:accelerometerData.acceleration];
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}
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if (callback) {
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callback(deviceOrientation);
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}
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}];
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}
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- (UIInterfaceOrientation)getOrientationBy:(CMAcceleration)acceleration
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{
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if(acceleration.x >= 0.75) {
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return UIInterfaceOrientationLandscapeLeft;
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}
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if(acceleration.x <= -0.75) {
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return UIInterfaceOrientationLandscapeRight;
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}
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if(acceleration.y >= -0.75) {
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return UIInterfaceOrientationPortrait;
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}
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if(acceleration.y >= 0.75) {
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return UIInterfaceOrientationPortraitUpsideDown;
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}
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return [[UIApplication sharedApplication] statusBarOrientation];
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}
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- (AVCaptureVideoOrientation)convertToAVCaptureVideoOrientation:(UIInterfaceOrientation)orientation
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{
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switch (orientation) {
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case UIInterfaceOrientationPortrait:
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return AVCaptureVideoOrientationPortrait;
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case UIInterfaceOrientationPortraitUpsideDown:
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return AVCaptureVideoOrientationPortraitUpsideDown;
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case UIInterfaceOrientationLandscapeLeft:
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return AVCaptureVideoOrientationLandscapeLeft;
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case UIInterfaceOrientationLandscapeRight:
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return AVCaptureVideoOrientationLandscapeRight;
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default:
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return 0; // unknown
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}
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}
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@end
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