gyroscope

iOS - gyroscope sample

由 元气小坏坏 提交于 2019-12-11 23:56:42
问题 I am looking for writing a code which makes use of Gyroscope in 'pull' fashion. I fid sample code which makes use of startGyroUpdatesToQueue:withHandler: [ "Push' approach ]. I wish to make use of startGyroUpdates instead. I want to display the gyro updates continuously on screen without using startGyroUpdatesToQueue:withHandler: Is this possible? If yes, is there any sample I can refer to. Thanks in advance 回答1: It's pretty straightforward. To get startet you should read the Event Handling

What is the official iPhone 4 maximum gyroscope data update frequency

由 ℡╲_俬逩灬. 提交于 2019-12-11 09:13:16
问题 I am playing with the gyro on iPhone 4, although I am setting the gyro update rate to 100Hz motionManager.gyroUpdateInterval = 0.01; Despite that I seem to be getting the updates only with 50Hz. Does anyone have experience with that and can either confirm that number or maybe tell me what the official update frequency is? Cheers Esden 回答1: The ST chipsets used in iPhone are capable of 1KHz for Accel and 800Hz for Gyro, in theory you may be able to get that.. 回答2: Since iOS 4.2 you can run the

“pushes” matching UIInterpolatingMotionEffect? (i.e. access “physics” on UIInterpolatingMotionEffect)

由 ≡放荡痞女 提交于 2019-12-11 03:24:19
问题 With UIInterpolatingMotionEffect, twist the iPhone, and you can have an image move. Now: imagine a red block you will "bounce around" on screen, using UICollisionBehavior and UIDynamicItemBehavior. When the user twists the iPhone: I want the boxes to "start moving" WITH SIMILAR PHYSICS FEEL to using UIInterpolatingMotionEffect. http://tinypic.com/player.php?v=b67mlc%3E&s=8#.VBVEq0uZNFx Aside:UX explanation: the bouncy effect (example: SMS on iPhone) has the same "feel" as the parallax image

Comparison: TYPE_ROTATION_VECTOR with Complemenary Filter

由 冷暖自知 提交于 2019-12-11 02:48:35
问题 I have been working on Orientation estimation and I need to estimate correct heading when I am walking in straight line. After facing some roadblocks, I started from basics again. I have implemented a Complementary Filter from here, which uses Gravity vector obtained from Android (not Raw Acceleration), Raw Gyro data and Raw Magnetometer data. I am also applying a low pass filter on Gyro and Magnetometer data and use it as input. The output of the Complementary filter is Euler angles and I am

StreetView gyroscope functionality

由 ε祈祈猫儿з 提交于 2019-12-11 01:44:43
问题 In the official Google Maps application when a user rotates the device, StreetView is rotated. I made a research and didn't find how to enable gyroscope functionality in Google Maps v2 API for StreetView. I can implement this by myself, but maybe there IS such functionality and I just haven't find it? 回答1: There isn't any built-in features in StreetView to enable this functionality. If you would like to do it by yourself you can check following links: Set the camera orientation point of view

Tracking a car using Accelerometer and Gyroscope when GPS signal is low

由 匆匆过客 提交于 2019-12-10 21:56:38
问题 We are planning to write a software that would track a Car's GPS position, GPS signal strength, Accelerometer (X, Y, Z) and Gyroscope(X, Y, Z) for every 5 seconds or so. And send the data up to a server for post processing. The server would determine what are roads that are covered car. So this is not a real time processing. It can happen in the backend (over the night as batch process) When the GPS signal goes down, say for 30 seconds. The post processing should guess the lat and lon using

Using the Android gyroscope in Unity3d, how can I set the initial camera rotation to the initial mobile device rotation?

由 孤者浪人 提交于 2019-12-09 18:38:43
问题 I want to use the Android gyroscope to perform head tracking on the standard First Person Controller of Unity3d. I created a short script that rotates both the parent node and the camera child node of the First Person Controller. The script is attached to the camera. This script works very well, it rotates the first-person view based on the movements of my mobile device. However, it only works when I hold my phone in a forward looking position when I start my app. If my phone lies flat on the

Orientation type of the sensor

由 ぐ巨炮叔叔 提交于 2019-12-08 06:31:54
问题 What data are used by orientation sensor in the android Samsung Galaxy S 2. Gyroscope's data or accelerometer's data? 回答1: I have recently answered a similar question (you can have a look here). The brief answer is this: "The methods included in the Android APIs to get the orientation does not include readings from the gyroscope sensor. Gyroscope does not provide information about orientation, since it only has information about rotation speed" . 回答2: Samsung Galaxy S2 has a boatload of

Update rotational data from the gyroscope with respect to a predefined orientation?

由 一个人想着一个人 提交于 2019-12-08 06:23:24
Normally rotational data from the gyroscope y axis is updated with respect to vertical orientation of the phone. But if this orientation slightly changes as shown in the diagram, is there any method that i could take the component of y rotation to vertical axis(Vertical orientation position of the phone), ( This is possible for linear components by using Cosine angles sine angles) But what about rotation? Anyway i can we do this? To my experience, gyroscope's values are mobile, meaning that the axis are updated as rotations intervene (that's true for Android, no reason not to be for iOS). If

Update rotational data from the gyroscope with respect to a predefined orientation?

由 早过忘川 提交于 2019-12-08 06:15:16
问题 Normally rotational data from the gyroscope y axis is updated with respect to vertical orientation of the phone. But if this orientation slightly changes as shown in the diagram, is there any method that i could take the component of y rotation to vertical axis(Vertical orientation position of the phone), ( This is possible for linear components by using Cosine angles sine angles) But what about rotation? Anyway i can we do this? 回答1: To my experience, gyroscope's values are mobile, meaning
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