ios - Map device tilt to physicsWorld gravity? -


I am creating a "marble" maze game to learn the spritekit basics.

I want to map the gravity of the game to the inclination of the device. I am trying to understand how to do it, but I am only able to map the Y axis successfully: 

  class func receipt (motionManager: CMMotionManager) {var vec = CGVectorMake 0, 0) If the attitude = motionManager.device Motion? .attitude? {Let's do = CGFLOT (-attitude.pitch * 2 / M_PI) // It works, it gives 1/1 when the device is vertical (1 when the Home button is inverted) x = CGFloat (attitude.roll * 2 / M_PI) // This does not work for physics. World.gravity = CGVectorMake (x, y)}}

I can map the Y axis, which is called "up" or " Down "(relative to portrait mode) though I do not understand how to map the X axis (pull from the edge of the device). For example, when the device should be (0,0) when placing it flat on the table (x, y), and also should be (0,0) even when it is placed below the screen. Roll Return -179 In addition, if I keep my device vertical (on portrait mode) and keep the device running on my feet, then gravity should be (X: 0, Y: 1) however X continues to change because it Is based on attitude. Roll

How can this be done?

The easiest way to get an accelerometer update, not to speed up the device, and to direct the gravity vector Reads - It's okay that the accelerometer captures: a measure of gravity in the device's coordinate system.

Unfortunately I am a swift thickness, therefore the code can not be given the code, but you are looking to provide a block of type CMAccelerometerHandler , which will allow you to CMAccelerationData from where you can get the CMAcceleration string and that is, to apply the gravity vector directly. 

  if data = motionmanager.accelerometerData? {Vec = CGVectorMake (CGFloat (data.acceleration.x), CGFloat (data.acceleration.y)}}

-

Comments

Post a Comment

Popular posts from this blog

Member with no value in F# -

After I am trying to convert F # to the following C # code: [StructLayout (LayoutKind.Sequential, charset = CharSet.Ansi)] Private class DOCINFOA {[MarshalAs (UnmanagedType.LPStr)] public string nomeDocumento; [Marshall (UnmanagedType.LPStr)] Public string arquivoSaida; [Marshall (UnmanagedType.LPStr)] Public String Tipodo; } I am doing the following: Named place printer module RawPrinterHelper = [& LT; StructLayout (LayoutKind.Sequential, charset = CharSet.Ansi) & gt;] Type DOCINFOA = [& LT; MarshalAs (UnmanagedType.LPStr) & gt;] Member this.nomeDocumento [& LT; MarshalAs (UnmanagedType.LPStr) & gt;] Member this.arquivoSaida [& LT; MarshalAs (UnmanagedType.LPStr) & gt;] Member This Tipoda [/ code> But I get: One type of definition is necessary for one or more members . Can I vacate these members? you val code> member : [& lt; StructLayout (LayoutKind.Sequential, charset = CharSet.Ansi) & gt;] Type DOCINFOA = [...
Read more

java - Joda Time Interval Not returning what I expect -

मेरे पास निम्न प्रोग्राम है import java.util। *; Import java.text। *; आयात करें org.joda.time। *; सार्वजनिक श्रेणी के स्कोप कंट्रोल {सार्वजनिक स्थिर अंतराल मिलनसार () {दिनांक समय currDate = नया दिनांक समय (2008, 4, 4, 15, 30, 0, 0); दिनांक समय epochDate = नया दिनांकटाइम (2000, 1, 1, 12, 0, 0, 0); अंतराल अंतराल = नया अंतराल (युरोप डेट, करोडेट); वापसी अंतराल; } सार्वजनिक स्थिर शून्य मुख्य (स्ट्रिंग [] आर्ग्स) {डबल दिनबात = मिलते समय ()। ToDurationMillis () / 1000/60/60/24; StdOut.println (daysBtween); }} मुझे आउटपुट मिल रहा है: 3016.0 लेकिन जो मैं देख रहा हूं वह है: 3016.1458333333 मैं क्या कर रहा हूँ ? toDurationMillis एक लंबा लौटा देता है, और प्रत्येक प्रभाग को int के रूप में घोषित किया जाता है। जावा इस प्रकार इनट्स को लॉन्ग में परिवर्तित कर देगा और डिवीजन को लंबे समय तक लौटाना होगा। परिणाम को अंत में दोहरे रूप में परिवर्तित करना। डबल्स का उपयोग करके अभिव्यक्ति करने के लिए जावा को बताने के लिए, अभिव्यक्ति के किसी भी घटक को दोहरे रूप में घोषित करें। उदाहरण के लिए: ...
Read more

c# - Showing a SelectedItem's Property -

So I have enabled a rightclick option for my DataGrid. I want to display the only chosen property but it is not behaving like what I would like it to display my name and additional. Public category Paymentinfo {public int PaymentNo {get; Set; } Public string date {get; Set; } Public Double Pay {get; Set; } Public Double Principle {get; Set; } Public Double Interest {get; Set; } Public Double Balance {Received; Set; }} Private Zero MenuItem_OnClick (Object Sender, RoutedEventArgs e) {MessageBox.Show (AmortGrid.SelectedItem.ToString ()); } I'm trying to apply it without using a View Module! If I place a breakpoint where the messagebox and the recipient place it on selected ITEM, then this property will display the payment. A date-payment-principle-interest-balance is the only value that needs payment. Was hoping that it would be something like this MessageBox.Show (AmortGrid.SelectedItem.PaymentNo.ToString ()); When you call ToString () So you get the class typ...
Read more