rotation

How to prevent the view controllers in a tab bar controller from rotating?

由 拟墨画扇 提交于 2020-01-02 06:58:08
问题 I have a tab bar controller managing 4 tabs. I have subclassed the tab bar controller so that the shouldAutorotateToInterfaceOrientation: method only allows a specific view controller in one of the tabs to rotate. Everything works almost fine: the controllers in the remaining tabs do not rotate. However, when the view controller which is allowed to rotate actually rotates, if the user taps one of the remaining tabs, the corresponding view controller also appear rotated (even though its

How to prevent the view controllers in a tab bar controller from rotating?

由 这一生的挚爱 提交于 2020-01-02 06:58:04
问题 I have a tab bar controller managing 4 tabs. I have subclassed the tab bar controller so that the shouldAutorotateToInterfaceOrientation: method only allows a specific view controller in one of the tabs to rotate. Everything works almost fine: the controllers in the remaining tabs do not rotate. However, when the view controller which is allowed to rotate actually rotates, if the user taps one of the remaining tabs, the corresponding view controller also appear rotated (even though its

Calculate if two 3D triangles are on the same plane

由 旧时模样 提交于 2020-01-02 06:21:09
问题 For a 3D game engine I'm working on I need to calculate if two 3D triangles are on the same plane to display it accordingly. How do I calculate the angles of a triangle in 3D space? Would calculating a surface normal and comparing those ever give me 2 equivalent normals? 回答1: Why do you want to do that? What is the number of triangle you expect to test? It seems a little bit complex for a real time rendering algorithm! Anyway: Compute the normal n of the triangle. Then compute the plane

iphone autorotation animation

由 六眼飞鱼酱① 提交于 2020-01-02 05:41:10
问题 Is it possible to turn off the animation for the autorotation? I want it to rotate, but I just dont want the animation to occur (like an instant switch). 回答1: Just add the following code to overwrite the standard rotation animation: - (void)viewDidLoad { [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didRotate:) name:UIDeviceOrientationDidChangeNotification object:nil]; } - (void)didRotate:(NSNotification *)notification { orientation = [[UIDevice currentDevice]

Weird behaviour when rotating iPhone for TDs with colspan

由 喜你入骨 提交于 2020-01-02 05:40:27
问题 This is about displaying a simple HTML page in iPhone's browser, with rotation. Setup : two identical tables but one of them has a (CSS) width of 69% while the other is at 100%. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> <head> <meta http-equiv="Content-type" content="text/html; charset=UTF-8" /> <meta name="HandheldFriendly" content="true" /> <meta name="viewport" content="width=device-width, initial-scale=1.0, user

Android widget ImageButton loses image when screen is rotated

由 佐手、 提交于 2020-01-02 05:25:07
问题 I have a widget on my home screen with several ImageButtons which have default background images. Through the configuration activity, I can change the image on any of the ImageButtons. The problem is that when the screen is rotated, the image on the ImageButton disapears and it changes back to the default image. I don't know why this happens or how to fix it 回答1: When the screen is rotated the entire appwidget is rebuilt using the last RemoteViews object you passed to AppWidgetManager

In Place rotation C++ Practice

由 …衆ロ難τιáo~ 提交于 2020-01-02 05:09:31
问题 I have a working rotating function going for my "items" int array. The code below gets it done, except that im transferring values out unnecessarily. Im trying to acheive the "inplace" rotation. What I mean by that is where the ptrs would increment or decrement instead of grabbing values out of the array..By which I need to "up" the efficiency level in that way for this method..Any Suggestions? void quack::rotate(int nRotations) { if ( count <= 1 ) return; else // make sure our ptrs are where

Getting new position of a line after rotation

由 穿精又带淫゛_ 提交于 2020-01-02 05:06:06
问题 I need to find out new coordinates of line after rotation using RotateTransform method on a line. For example, after this line: line.RenderTransform = new RotateTransform(25, 0, 0); line.X1 and the three other properties don't change. I have found some solution for shapes like rectangular, but it doesn't work for line. Line has different way how to treat with it. EDIT: Thanks for your help H.B. The second way is exactly what I've been looking for. SOLUTION: Line line = new Line(); line.X1 =

How to convert a rotated NetCDF back to a normal lat/lon grid?

由 妖精的绣舞 提交于 2020-01-02 04:57:07
问题 I have a NetCDF file with rotated coordinates. I need to convert it to normal lat/lon coordinates (-180 to 180 for lon and -90 to 90 for lat). library(ncdf4) nc_open('dat.nf') For the dimensions, it shows: [1] " 5 variables (excluding dimension variables):" [1] " double time_bnds[bnds,time] " [1] " double lon[rlon,rlat] " [1] " long_name: longitude" [1] " units: degrees_east" [1] " double lat[rlon,rlat] " [1] " long_name: latitude" [1] " units: degrees_north" [1] " char rotated_pole[] " [1] "

SVG rotate text with % as Unit

由 醉酒当歌 提交于 2020-01-02 04:45:27
问题 I try to rotate a svg text. i get the position of the text as % i.e. 15% by calling a php function from xslt. the problem is that i can not rotate a svg object using %. it works if i use a digit number instead. Below i present the problem as simplified: <?xml version="1.0"?> <svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ev="http://ww.w3.org/2001/xml-events" xmlns:php="http://php.net/xsl" version="1.1" baseProfile="full"> <text x="50%" y="50%"
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