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Search found 131 results on 6 pages for 'johannes meier'.

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  • Send copy of class to view class so it can render him? ( iPhone )

    - by Johannes Jensen
    I'm making a game for the iPhone, and I have a class called Robot. Then I have a class called View, which renders everything. I want to send a copy of my Robot, which I defined in my ViewController, and I send it to gameView (which is View *gameView), like this: robot = [Robot new]; [gameView setRobot: [robot copy]]; I tried to make a copy but that didn't work, I could also do it with a pointer to Robot (&robot) but sometimes it just crashes ? I tried this in my View.h @interface definition: @property (copy) Robot* robot; but I get the error /RobotsAdventure/Classes/View.h:24: error: setter '-robot' argument type does not match property type :/ Help? I'm pretty new at this, heh.

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  • iPhone - Drawing 2D with OpenGL ES, fast and simple.

    - by Johannes Jensen
    I'm going to make a game for the iPhone, and I'm mostly going to be using images. I've read that using Quartz only is slow for actual games with high frame rates, so I was wondering if you guys had any good ideas for using OpenGL for rendering a game scene? I'm going to be using a lot of images, and I want to be able to freely rotate them. I've looked at Apple's examples GLSprite and GLPaint, but I don't really see anything I could use. All I want to do is be able to render images at specific positions, and want to be able to rotate them. I'm a noob at OpenGL, but I know Quartz.

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  • XNA how to organize code with game components (managers)

    - by Johannes
    XNA If I have a button class, and I have a buttonManager class that manages what buttons to be drawn to the screen depending on what the current game state is (main menu, in game, etc), how do I organize my code so that when I click on a button, it takes the user to a different screen. (ex. options menu, ingame). To be more specific, if I were to put the check to see if the user clicks on the button within the buttonManager how would I have the game switch and run the actual game (which is in an entire different class)? Main gameclass buttonManager game component (adds buttons) Button class

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  • Setting up a view to draw to in Objective-C (iPhone) ?

    - by Johannes Jensen
    Okay, so, I'm all new to iPhone and stuff, but I'm not even at programming, I have many years of experience with ActionScript 2.0 and 3.0, I want to set up a view, that I can also pass variables to. The view is gonna draw everything with Quartz. I tried to make another game where I tried to add a pointer to a NSMutableArray to the view class, but it didn't work cause I didn't know how to store an actual class. I wanted to do like: [myView setNeedsDisplay]; but I had to do [(View*)self.view setNeedsDisplay]; didn't really work out in the end... Okay, so now I got: - (void) viewDidLoad { [super viewDidLoad]; viewClass = [[View class] retain]; gameView = [[[viewClass alloc] initWithFrame: CGRectZero] retain]; [gameView setNeedsDisplay]; } This is in my drawInContext:context, which is fired by drawRect: Also, my drawRect does [self drawInContext: UIGraphicsGetCurrentContext()]; CGContextSetStrokeColorWithColor(context, [[UIColor blackColor] CGColor]); CGContextSetLineWidth(context, 3.0); CGContextSetLineCap(context, kCGLineCapRound); CGContextSetLineJoin(context, kCGLineJoinRound); CGMutablePathRef aPath = CGPathCreateMutable(); CGPathMoveToPoint(aPath, nil, 5, 5); CGPathAddLineToPoint(aPath, nil, 45, 43); CGContextAddPath(context, aPath); CGContextStrokePath(context); Nothing happens. Help? Oh yeah, I get this error: : invalid context for each time I use those functions. :[ Thanks!

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  • What's the bug in the following code ?

    - by Johannes
    #include <iostream> #include <algorithm> #include <vector> #include <boost/array.hpp> #include <boost/bind.hpp> int main() { boost::array<int, 4> a = {45, 11, 67, 23}; std::vector<int> v(a.begin(), a.end()); std::vector<int> v2; std::transform(v.begin(), v.end(), v2.begin(), boost::bind(std::multiplies<int>(), _1, 2)); std::copy(v2.begin(), v2.end(), std::ostream_iterator<int>(std::cout, " ")); } When run, this gives a creepy segmentation fault. Please tell me where I'm going wrong.

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  • IE not showing jquery append() images

    - by Johannes Ruuska
    Ok, so i took John Raasch's slideshow script and modyfied it too dynamicly fetch images from folders on the server through ajax. The slideshow work like a charm in FF and Chrome but IE is not showing the images. And since IE's javascript debugging possibilities is close to none I cant figure out what is crashing. Javascript (indenting got messed up when pasting here but you get the code anyway): function slideSwitch() { var $active = $('#box_bildspel IMG.active'); if ( $active.length == 0 ) $active = $('#box_bildspel IMG:last'); var $next = $active.next().length ? $active.next() : $('#box_bildspel IMG:first'); $active.addClass('last-active'); $next.css({opacity: 0.0}) .addClass('active') .animate({opacity: 1.0}, 1000, function() { $active.removeClass('active last-active'); }); } $(document).ready(function(){ $.get('includes/bildspel.php?page='+page, function(r){ var file = r.split('!'); var path = 'pic/bildspel/'+page+'/'; var data = ''; if(file != null && file != ''){ $.each(file, function(key, value){ if(key == 0) { $('#box_bildspel').append('<img src="'+path+value+'" class="active"></img>'); //console.log(path+value); } else { $('#box_bildspel').append('<img src="'+path+value+'"></img>'); //console.log(path+value); } }); } if(file.length > 1){ $(function() { setInterval( "slideSwitch()", 4000 ); }); } }); }); PHP: <?php function getimgs($page) { $path = '../pic/bildspel/'.$page; $files = ''; if ($handle = opendir($path)) { while (false !== ($file = readdir($handle))) { if ($file !== '.' && $file !== '..') { $files .= $file.'!'; } } closedir($handle); echo substr_replace($files ,"",-1);; } } getimgs($_GET['page']); ?> Tested in IE 7 & 8 Any ideas? I have a deadline on this site for tomorrow (april 23) would appreciate VERY much if someone could figure this on out for me, thanks in advance!

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  • Windows Phone 7 Development &ndash; Useful Links

    - by David Turner
    Here are some excellent links for anyone developing for Windows Phone 7: J.D. Meier’s Windows Phone Developer Guidance Map – this is immense.  Also check out the Silverlight version Justin Angel’s site – some really great articles on unlocked roms, automation and Continuous Integration Windows Phone 7 Development Best Practices Wiki Jeff Blankenburg’s 31 days of Windows Phone 7 This post of Links to sample code for Windows Phone Tim Heuers blog, particularly this post of Tips and Tricks Kevin Marshall's blog, particularly the epic WP7 Development Tips Part 1 post Code Samples for Windows Phone on MSDN If you have unlocked your phone for development, then you can use the WPConnect tool to connect to the device rather than using the Zune client.  I found it useful to pin a shortcut to WPConnect in my Start Menu. The Performance Counters displayed when you debug your app on a device are useful for seeing things like frame rate and memory usage, this page on MSDN explains what the numbers mean.  Jeff Blankenburg covers this in more details on his blog I also came across this set of links to tutorials recently which looks very useful. Creating Windows Phone 7 Application and Marketplace Icons: http://expression.microsoft.com/en-us/gg317447.aspx

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  • Does TDD lead to the good design?

    - by Eugen Martynov
    I'm in transition from "writing unit tests" state to TDD. I saw as Johannes Brodwall creates quite acceptable design from avoiding any of architecture phase before. I'll ask him soon if it was real improvisation or he had some thoughts upfront. I also clearly understand that everyone has experience that prevents to write explicit design bad patterns. But after participating in code retreat I hardly believe that writing test first could save us from mistakes. But I also believe that tests after code will lead to mistakes much faster. So this night question is asking for people who is using TDD for a long time share their experience about results of design without upfront thinking. If they really practice it and get mostly suitable design. Or it's my small understanding about TDD and probably agile.

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  • Immutable Method in Java

    - by Chris Okyen
    In Java, there is the final keyword in lieu of the const keyword in C and C++. In the latter languages there are mutable and immutable methods such as stated in the answer by Johannes Schaub - litb to the question How many and which are the uses of “const” in C++? Use const to tell others methods won't change the logical state of this object. struct SmartPtr { int getCopies() const { return mCopiesMade; } }ptr1; ... int var = ptr.getCopies(); // returns mCopiesMade and is specified that to not modify objects state. How is this performed in Java?

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  • Immutable Method Java

    - by Chris Okyen
    In Java, there is the final keyword in lieu of the const keyword in c and c++. In the latter languages their is mutable and immutable methods such as stated in one answer by Johannes Schaub - litb the question how-many-and-which-are-the-uses-of-const-in-ce Use const to tell others methods won't change the logical state of this object. struct SmartPtr { int getCopies() const { return mCopiesMade; } }ptr1; ... int var = ptr.getCopies(); // returns mCopiesMade and is specified that to not modify objects state. How is this performed in Java?

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  • Google I/O 2012 - Making Good Apps Great: More Advanced Topics for Expert Android Developers

    Google I/O 2012 - Making Good Apps Great: More Advanced Topics for Expert Android Developers Reto Meier In a follow-up to last year's session, I'll demonstrate how to use advanced Android techniques to take a good app and transform it into a polished product, without being a resource hog. Features advanced coding tips and tricks, bandwidth-saving techniques, implementation patterns, exposure to some of the lesser-known API features, and insight into how to minimize battery drain by ensuring your app is a good citizen on the carrier network. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 2193 69 ratings Time: 58:35 More in Science & Technology

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  • How to supress Powershell window when using the -File option

    - by guillermooo
    I'm calling Powershell like so: C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe -noprofile -noninteractive -nologo -file "C:\Users\dummy\Documents\dev\powershell\samples\test.ps1" I'm calling it from a python script, but the same problem can be observed if called via a shortcut. I thought the -NonInteractive flag would cause Poweshell to execute in a hidden window, but it doesn't. Is there a way of supressing the console window when calling Powershell from an external application? Solution based on Johannes Rössel suggestion st_inf = subprocess.STARTUPINFO() st_inf.dwFlags = st.inf.dwFlags | subprocess.STARTF_USESHOWWINDOW Popen(["notepad"], startupinfo=st_inf)

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  • SyncToBlog #10 Lots of Azure and Cloud Links including MIX10 videos

    - by Eric Nelson
    Just getting a few interesting cloud links “down on paper”. I last did one of these on Azure in Feb 20010. Cloud Links: Article on Debugging in the Cloud http://code.msdn.microsoft.com/azurescale  A sample app that demonstrates monitoring and automatically scaling an Azure application in response to dropping performance etc. Basically a console app that checks perf stats and then uses the Service Management API to spin up new instances when needed. Azure In Action book is imminent :) Running Memcached in Windows Azure from the MS UK team Using Microsoft Codename Dallas as a data source for Drupal also from the MS UK team I often mention them – but this post is the biz! Metodi on fault and upgrade domains Detailed blog post on comparing Azure AppFabric Service Bus REST support to the free Faye Ruby+JavaScript gem that implements the JSON publish/subscribe protocol Bayeux. AppFabric LABS allow you to test out and play with experimental AppFabric technologies. Details of the upcoming VM support in Windows Azure Nice series of posts from J D Meier in the Patterns and Practice team How To Use ASP.NET Forms Auth with Azure Tables  How To Use ASP.NET Forms Auth with Roles in Azure Tables How To Use ASP.NET Forms Auth with SQL Server on Windows Azure And sessions from MIX10 held March 15th to 17th: Lap around the Windows Azure Platform – Steve Marx Building and Deploying Windows Azure Based Applications with Microsoft Visual Studio 2010 – Jim Nakashima Building PHP Applications using the Windows Azure Platform – Craig Kitterman, Sumit Chawla Using Ruby on Rails to Build Windows Azure Applications – Sriram Krishnan Microsoft Project Code Name “Dallas": Data for your apps – Moe Khosravy Using Storage in the Windows Azure Platform – Chris Auld Building Web Applications with Windows Azure Storage – Brad Calder Building Web Application with Microsoft SQL Azure – David Robinson Connecting Your Applications in the Cloud with Windows Azure AppFabric – Clemens Vasters Microsoft Silverlight and Windows Azure: A Match Made for the Web – Matt Kerner Something for everyone :)

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  • Lessons From OpenId, Cardspace and Facebook Connect

    - by mark.wilcox
    (c) denise carbonell I think Johannes Ernst summarized pretty well what happened in a broad sense in regards to OpenId, Cardspace and Facebook Connect. However, I'm more interested in the lessons we can take away from this. First  - "Apple Lesson" - If user-centric identity is going to happen it's going to require not only technology but also a strong marketing campaign. I'm calling this the "Apple Lesson" because it's very similar to how Apple iPad saw success vs the tablet market. The iPad is not only a very good technology product but it was backed by a very good marketing plan. I know most people do not want to think about marketing here - but the fact is that nobody could really articulate why user-centric identity mattered in a way that the average person cared about. Second - "Facebook Lesson" - Facebook Connect solves a number of interesting problems that is easy for both consumer and service providers. For a consumer it's simple to log-in without any redirects. And while Facebook isn't perfect on privacy - no other major consumer-focused service on the Internet provides as much control about sharing identity information. From a developer perspective it is very easy to implement the SSO and fetch other identity information (if the user has given permission). This could only happen because a major company just decided to make a singular focus to make it happen. Third - "Developers Lesson" -  Facebook Social Graph API is by far the simplest API for accessing identity information which also is another reason why you're seeing such rapid growth in Facebook enabled Websites. By using a combination of URL and Javascript - the power a single HTML page now gives a developer writing Web applications is simply amazing. For example It doesn't get much simpler than this "http://api.facebook.com/mewilcox" for accessing identity. And while I can't yet share too much publicly about the specifics - the social graph API had a profound impact on me in designing our next generation APIs.  Posted via email from Virtual Identity Dialogue

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  • Iphone UIScrollView and multiple visible images

    - by joynes
    Hi! Im trying to implement a UIScrollView including multiple images, using paginate. The problem is that I want more then one page to be visible in the UIScrollView, but only one page should be selected. I found several solutions in which you handle touch down/up (touchesBegan and touchesEnded) myself and scrollRectToVisible, but I want to avoid this if possible. A sample solution for that can be found at: http://forums.macrumors.com/showthread.php?t=634462 I dont get why its so easy if you only need to display one page at a time in the UIScrollView , but seems really hard if you want to show more pages. Could you solve it with zooming? /Br Johannes

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  • Date and timezone using j2me

    - by joynes
    Hi everyone! I have a date string as input from an rss like: Wed, 23 Dec 2009 13:30:14 GMT I want to fetch only the time-part, but it should be correct according to the my timezone. Ie, in Sweden the output should be: 14:30:14 What is the best way? I want it to work with other RSS date formats as well if possible. Im using regexp right now but that is not very general. Im having a hard time finding any library or support for dates and timezones in j2me? /Br Johannes

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  • Iphone progressive download audio player

    - by joynes
    Hi! Im trying to implement a progressive download audio player for the iphone, ie using http and fixed size mp3-files. I found the AudioStreamer project but it seems very complicated and works best with endless streams. I need to be able to find out the total length of audiofiles and I also need to be able to seek in the files. I found a hacked deviation from AudioStreamer but it doesnt seem to work very well for me. http://www.saygoodnight.com/?p=14 Im wondering if there is a more simple way to achieve my goals or if there are some better working samples out there? I found the bass library but not much documentation about it. /Br Johannes

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  • Blank installNotifyURI in OMA Download Descriptors

    - by joynes
    People can download content (music, images) for their mobile from my server. Im trying to use the installNotifyURI-tag of the download descriptors specified by OMA, to be able to find out if the download has been successful. When the user has downloaded the item I do get a POST to the url I specified in the installNotifyURI-tag. <installNotifyURIhttp://joynes.se/mytest.php</installNotifyURI Although I never get any status code. The POST is just blank. Anyone who knows about this problem? /Br Johannes

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  • Utilise Surv object in ggplot or lattice

    - by Misha
    Anyone know how to take advantage of ggplot or lattice in doing survival analysis? It would be nice to do trellis/facet like survival graphs. So in the end I played around and sort of found a solution for a kaplan meier plot. Apologize for the messy code in taking the list elements into a dataframe, but I couldnt figure out another way. Note: It only works with two levels of stratum. If anyone know how I can use x<-length(stratum) to do this please let me know (in stata I could append to a macro-unsure how this works in R)... ggkm<-function(time,event,stratum) { m2s<-Surv(time,as.numeric(event)) fit <- survfit(m2s ~ stratum) f$time<-fit$time f$surv<-fit$surv f$strata<-c(rep(names(fit$strata[1]),fit$strata[1]),rep(names(fit$strata[2]),fit$strata[2])) f$upper<-fit$upper f$lower<-fit$lower r<-ggplot (f,aes(x=time,y=surv,fill=strata,group=strata))+geom_line()+geom_ribbon(aes(ymin=lower,ymax=upper),alpha=0.3) return(r) }

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  • Android and SQLite using the SQLiteOpenHelper

    - by tunneling
    I have a SQLite database, and several tables within that database. I am developing a DBAdapter for each table within the database. (reference Reto Meier's Professional Android 2 Application Development, Listing 7.1). I am using the adb shell to interface with the database from the command line and see that the database is being populated as I expect. Occasionally, I want to drop a table so that I can ensure it's being built properly, from scratch. The problem is that SQLiteOpenHelper only checks to see if the database exists. Is there a typical solution to writing a helper to also see that the table(s) exists? Basically once I drop a table, the helper checks to see that the database exists and assumes all is well. Also, the CREATE_DATABASE string used in the reference above only creates the one table. Should I consider using the DBAdapter for an adapter to ALL of my tables? That doesn't seem as clean to me. Reference Material

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  • How can I learn Android?

    - by Daisama
    I am a freshman in college which has been Java programming for over a year. I haven taken a couple of programming courses, both of which were with Java. And I have done web development for several years. So overall, I would't say that I am a complete beginner in programming. Recently, I have developed a strong interest in developing for Android. I read that Android development was with Java and I thought it would making development easier for me. But I was very wrong. Based on reviews from Amazon, I have begun reading "Professional Android Application Development by Meier but everything is going over my head. The Busy Coder's Guide to Android Development seems a bit more for my level but I still want everybody else's opinion. The Google stuff isn't very helpful to me at my level and neither are the tutorials on anddev and such. Any advice for a complete beginner on how to get started? Thanks.

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