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我正在嘗試設計一個應用程序,使其顯示爲可以環視對象。我已經走得很遠了,但我無法弄清楚如何讓這個物體像一個畫框一樣漂浮在空中(而不是平坦的地面)。使用Core Motion和CATransform3D旋轉圖像
這裏是我的代碼:
CMMotionManager *motionManager = [[CMMotionManager alloc] init];
[motionManager setDeviceMotionUpdateInterval:0.1];
CMDeviceMotionHandler motionHandler =^(CMDeviceMotion *motion, NSError *error)
{
[xLabel setText:[NSString stringWithFormat:@"X: %f, Yaw: %f", motion.userAcceleration.x, motion.attitude.yaw]];
[yLabel setText:[NSString stringWithFormat:@"Y: %f, Pitch: %f", motion.userAcceleration.y, motion.attitude.pitch]];
[zLabel setText:[NSString stringWithFormat:@"Z: %f, Roll: %f", motion.userAcceleration.z, motion.attitude.roll]];
CATransform3D transform;
transform = CATransform3DMakeRotation(motion.attitude.pitch, 1, 0, 0);
transform = CATransform3DRotate(transform, motion.attitude.roll, 0, 1, 0);
transform = CATransform3DRotate(transform, motion.attitude.yaw, 0, 0, 1);
myView.layer.sublayerTransform = transform;
//[myImage setNeedsDisplay];
};
[motionManager startDeviceMotionUpdatesUsingReferenceFrame:CMAttitudeReferenceFrameXTrueNorthZVertical toQueue:[NSOperationQueue currentQueue] withHandler:motionHandler];
這將使它看起來像圖片是平放在桌子,但它應該不是看起來它掛在牆上。任何想法如何做到這一點?