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• External display suddenly not detected

  - by NChase

  I have a Lenovo IdeaPad U410 running Ubuntu Desktop 13.04. I have an external monitor that I connect to via HDMI, and it's worked flawlessly for six months. I plug in my laptop, it detects the display. The "change display" key built into the laptop works for switching between the two screens. Never any problems. This afternoon, when I reconnected my computer after taking it into another room for a bit, it didn't work. When I open up Display settings, it can't detect the display. I tried disconnecting/reconnecting everything multiple times. And most strangely, that same "change display" key now behaves like a Super key, opening the dash instead of toggling the display. Nothing at all changed between when I plugged it in this morning and when it stopped working a few hours later. I tried xrandr, that doesn't detect it either. Anyone have any ideas?

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• How can I create animated card graphics like in Hearthstone?

  - by Appeltaart

  In the game Hearthstone, there are cards with animated images on them. A few examples: http://www.hearthhead.com/card=281/argent-commander http://www.hearthhead.com/card=469/blood-imp The animations seem to be composed of multiple effects: Particle systems. Fading sprites in and out/rotating them Simple scrolling textures A distortion effect, very evident in the cape and hair of example 1. Swirling smoke effects, the light in example 1 and the green/purple glow in example 2. The first three elements are trivial, what I'd like to know is how the last two could be done. Can this even be done realtime in a game, or are they pre-rendered animations?

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• JavaOne Latin America Early Bird Discount: R$300,00 Off

  - by Tori Wieldt

  Learn how to code in Java more efficiently, pick up Java best practices, and participate in world-class networking at JavaOne Latin America—all for R$300,00 less if you register by 16 November. Have you ever wondered how to construct embedded Java applications for next-generation smart devices? Want to profit from client-side solutions using JavaFX, or simply build modern applications in Java 7? Techniques for these and much more are showcased at JavaOne Latin America—and you’re invited! Choose from more than 50 sessions, multiple demos, plus keynotes and hands-on labs. Topics include: Core Java Platform JavaFX and Rich User Experiences Java EE, Web Services, and the Cloud Java ME, Java Embedded, and Java Card Secure Your Place Now—Register now! Para mais informações ou inscrição ligue para (11) 2875-4163.

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• JDK 7 In Action - Learn With Java Tutorials and Developer Guides

  - by sowmya

  At JavaOne 2012, Stuart Marks, Mike Duigou, and Joe Darcy gave a presentation about JDK 7 In Action. Learn more about using JDK 7 features with the help of Java Tutorials and JDK 7 Developer Guides. Links to relevant information are provided below. If you are considering moving to JDK 7 from a previous release, the JDK 7 Release Notes and JDK 7 Adoption Guide are great resources. Project Coin Features Improved Literals * Literals section in Primitive Datatypes topic. * Binary Literals * Underscores in Numeric Literals Strings In Switch * Strings In Switch Diamond * Type Inference for Generic Instance Creation * Type Inference and Instantiation of Generic Classes Multi-catch and Precise Throw * Catching Multiple Exception Types and Rethrowing Exceptions with Improved Type Checking * Catch Blocks Try-with-resources * The try-with-resources Statement NIO.2 File System API * File I/O for information on path, files, change notification, and more * Zip File System Provider * Zip File System Provider * Developing a Custom File System Provider Fork Join Framework * Fork/Join - Sowmya

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• What is the situation about OpenGL under Ubuntu Unity and Gnome3?

  - by user827992

  In a GNU/linux distribution is usually installed Xorg as main graphical server, it operates with a client-server logic, a special windows is designate as desktop environment and this special windows can handle all the eyecandy stuff like decorations, icons and effects. The problem is that the latest UI heavily relies on hardware acceleration, Unity is an overlay on Compiz and the Gnome-shell also require an active driver for the GPU to work well: the problem is: on the same OS I can find multiple implementations of OpenGL who is handling my OpenGL buffer? how the OpenGL buffer is managed compared to the other windows? how can I be sure that my OpenGL implementation is glued to the hardware and is not related to the client-server logic of Xorg? For example I have tried the clutter library and I have only experienced problems under both Unity and GTK/Gnome, no problem under other OS.

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• Changing DisplayMode seems not to update Input&Graphic Dimension

  - by coding.mof

  I'm writing a small game using Slick and Nifty-GUI. At the program startup I set the DisplayMode using the following lines: AppGameContainer app = new ... app.setDisplayMode( 800, 600, false ); app.start(); I wrote a Nifty-ScreenController for my settings dialog in which the user can select the desired DisplayMode. When I try to set the new DisplayMode within this controller class the game window gets resized correctly but the Graphics and Input objects aren't updated accordingly. Therefore my rendering code just uses a part of the new window. I tried to set different DisplayModes in the main method to test if it's generally possible to invoke this method multiple times. It seems that changing the DisplayMode only works before I call app.start(). Furthermore I tried to update the Graphics & Input object manually but the init and setDimensions methods are package private. :( Does someone know what I'm doing wrong and how to change the DisplayMode correctly?

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• Why should I declare a class as an abstract class?

  - by Pied Piper

  I know the syntax, rules applied to abstract class and I want know usage of an abstract class Abstract class can not be instantiated directly but can be extended by other class What is the advantage of doing so? How it is different from an Interface? I know that one class can implement multiple interfaces but can only extend one abstract class. Is that only difference between an interface and an abstract class? I am aware about usage of an Interface. I have learned that from Event delegation model of AWT in Java. In which situations I should declare class as an abstract class? What is benefits of that?

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• Sneak Peek: New ASP.NET Validation Summary Control

  Check out this image of our upcoming ASP.NET validation summary control, ASPxValidationSummary: ASPxValidationSummary Benefits This new control helps you summarize validation errors from multiple controls and then displays them in a single block. This allows you to organize screen space more effectively if validation is required for several editors. Error entries can be displayed as a table, bulleted or ordered list. And each entry can be presented as a link that moves focus to the corresponding...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• My JavaOne 2012

  - by Geertjan

  I received a JavaOne speaker invitation for the following sessions and BOFs. Only one involves me on my own: Session ID: CON2987Session Title: Unlocking the Java EE 6 Platform The rest are combo packages, i.e., you get multiple speakers for the price of one.  Sessions and BOFs together with others:  Session ID: BOF4227 (together with Zoran Sevarac)Session Title: Building Smart Java Applications with Neural Networks, Using the Neuroph Framework Session ID: BOF5806 (together with Manfred Riem)Session Title: Doing JSF Development in NetBeans 7.1 Session ID: CON3160 (together with Allan Gregersen and others)Session Title: Dynamic Class Reloading in the Wild with Javeleon Discussion Panels:  Session ID: CON4952 (together with several NetBeans Platform developers)Session Title: NetBeans Platform Panel Discussion Session ID: CON6139 (together with several NetBeans IDE users)Session Title: Lessons Learned in Building Enterprise and Desktop Applications with the NetBeans IDE

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• Why are interfaces useful?

  - by Pankaj Upadhyay

  I have been studying and coding in C# for some time now. But still, I can't figure the usefulness of Interfaces. They bring too little to the table. Other than providing the signatures of function, they do nothing. If I can remember the names and signature of the functions which are needed to be implemented, there is no need for them. They are there just to make sure that the said functions(in the interface) are implemented in the inheriting class. C# is a great language, but sometimes it gives you the feeling that first Microsoft creates the problem (not allowing multiple inheritance) and then provides the solution, which is rather a tedious one. That's my understanding which is based on limited coding experience. What's your take on interfaces? How often you make uses of them and what makes you do so?

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• How can I render player movement on a 2d plane efficiently?

  - by user422318

  I'm prototyping a 2d HTML5 game with similar interaction to Diablo II. (See an older post of mine describing the interaction here: How can I imitate interaction and movement in Diablo II?) I just got the player click-to-move system working using the Bresenham algorithm but I can't figure out how to efficiently render the player's avatar as he moves across the screen. By the time redraw() is called, the player has already finished moving to the target point. If I try to call redraw() more frequently (based on my game timer), there's incredible system lag and I don't even see the avatar image glide across the screen. I have a game timer based off this awesome timer class: http://www.dailycoding.com/Posts/object_oriented_programming_with_javascript__timer_class.aspx In the future, there will be multiple enemies chasing the player. Fast pace is essential to the experience. What should I do?

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• HLSL: An array of textures and sampler states

  - by nate142

  The shader must switch between multiple textures depending on the Alpha value of the original texture for each pixel. Now this would word fine if I didn't have to worry about SamplerStates. I have created my array of textures and can select a texture based on the Alpha value of the pixel. But how do I create an Array of SamplerStates and link it to my array of textures? I attempted to treat the SamplerState as a function by adding the (int i) but that didn't work. Also I can't use Texture.Sample since this is shader model 2.0. //shader model 2.0 (DX9) texture subTextures[255]; SamplerState MeshTextureSampler(int i) { Texture = (subTextures[i]); }; float4 SampleCompoundTexture(float2 texCoord, float4 diffuse) { float4 SelectedColor = SAMPLE_TEXTURE(Texture, texCoord); int i = SelectedColor.a; texture SelectedTx = subTextures[i]; return tex2D(MeshTextureSampler(i), texCoord) * diffuse; }

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• Looking for Non Hosted Audio & Video Podcasting Solution for Church Websites

  - by motboys

  I am looking for a solution that will do the following: User uploads audio and/or video files with title, desc. image etc Solution embeds info into ID3 tags Solution generates RSS feed Solution embeds new content in our website Content on website is searchable This is for a couple of church websites I manage. I am looking for the ability to do the above with a sermon mp3 and also a video. At the moment we are doing it with multiple steps / people involved and I want to automate the process. I can't seem to find a solution that does all of the above. Thank you!

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• 3D Texture Mapping (Atlas)

  - by Tim Hatch

  This is a pretty simple question. If I was to use multiple images in a single texture for a 3D cube, how would I go about re-using each vertex (having 8 total vs 24)? With a single buffer of 8 vertices, I don't see how I'd properly reuse the UV values. Any help on that? I know it's not terribly clear, but I figured it was a simple question. The 2D method is pretty easy, the next coordinates would be the same as the first (0,0 and 0,1 respectively). However, the above 3D version has me quite befuddled.

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• Logging in JSON Effect on Performance

  - by Pius

  I see more and more articles about logging in JSON. You can also find one on NodeJS blog. Why does everyone like it so much? I can only see more operations getting involved: A couple new objects being created. Stringifying objects, which either involves calculating string length or multiple string allocations. GCing all the crap that was created. Is there any test on performance when using JSON logging and regular string logging? Do people use JSON (for logging) in enterprise projects?

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• Hide folder names or such?

  - by Miller

  Okay, I have a cpanel account with unmetered everything (pay a bit per month), so I wanna host my forum on it etc I have the domains as lets say money.com wordpress.com forum.com As I'll have to put everything in different folders for instance money will be in /m/ wordpress /w/ and forum in /forum/ or something. What I'm saying is, how do I hide the file so it'll look like money.com/m/ is actually money.com ?? I need to hide the folder name the contents are in so I can host multiple sites, therefore the site will look like its the only site on the host so I don't have to add a redirect for it to direct it to the folder? Thanks guys, been trying for a while!

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• How to use rel=canonical with Sitecore aliases?

  - by Mike G

  I have inherited a Sitecore architecture that is a mess from an SEO duplicate content POV. There are multiple aliases that have been created (and indexed by the search engines) for many of the 2nd tier pages of the site. Due to server issues, I am not able to 301 redirect these duped pages, so I would like to use the rel=canonical tag in an attempt to try and get Google/Bing to recognize the correct pages I would like to appear in the index. I have blocked the most extraneous duped pages with a robots.txt file, however, since Google/Bing have already spidered many of the duped pages, I need to keep them accessible to the spiders, BUT removed from the index. The catch is, since the duped pages are aliases (and don't really physically exist in Sitecore that I can find), I am not sure how to go about using rel=canonical - or if I even can in this situation..?

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• Gladinet Cloud Desktop tool to manage Windows Azure Blob Storage from Windows Explorer

  - by kaleidoscope

  Gladinet Cloud Desktop is designed to make it easier for Windows Azure users to manage Windows Azure Blob storage directly from Windows Explorer. The solution makes it possible for Windows Azure Blob storage to be mapped as a virtual network Drive. “You can map multiple Azure Blob Storage Accounts as side-by-side virtual folders in same network drive. You can do drag & drop between local drive and Azure drive. For more information -  http://www.ditii.com/2010/01/04/gladinet-cloud-desktop-tool-to-manage-windows-azure-blob-storage-from-windows-explorer/ For Downloading the tool – http://www.gladinet.com/p/download_starter_direct.htm   Ritesh, D

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• Programming Language vs. Game Engine [on hold]

  - by hunteroatway17

  I understand that this question has been asked multiple times before. I am just asking this quick and simple question. I have been learning programming in C#, Java and C++ for the past 6 months; Just experimenting with each. I think that C++ is the one that I like most. What I would like to know and am wondering about is should I learn a programming language and use a 2D framework like Allegro; Or should I learn Unity and make 2D games in that because it is probably faster and easier. I want to learn something that I can get pretty good at, seeing as I am pursuing a career in indie game development. I also have a programmer's mind set and I am a left brain thinker so learning a language is not a issue. I just want to best and most future proof choice. Thanks.

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• Shouldn't we count characters of code and comments instead of lines of code and comments? [closed]

  - by Gabriel

  Counting lines of code and comments is sometimes bogus, since most of what we write may be written in one or more lines, depending column count limitations, screen size, style and so forth. Since the commonly used languages (say C, C++, C# and Java) are free-form, wouldn't it be more clever to count characters instead? Edit: I'm not considering LOC-oriented programming where coders try to artificially match requirements by adding irrelevant comments or using multiple lines where less would be enough (or the opposite). I'm interested in better metrics that would be independent of coding style, to be used by honest programmers.

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• iOS build machine setup: problem with certificates

  - by cbrulak

  some background: work with multiple team mates each work on our own MBP I'm setting a build machine that we can git push to in order to generate a build (aim to allow anyone to push to the build machine and then generate an archive, upload to testflight and send on its way) problem: getting my apple developer certificates on the build machine. I installed Lion, XCode, etc and I signed into my developer account through Xcode organizer, provisioning profiles download,etc. but beside each one it says: valid signing identity not found I also download my certificate from the developer.apple.com page, imported it into keychain, etc but no luck. Anyone else have a similar issue? Or maybe hints to fix? Thanks

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• Help us with our git workflow

  - by Brandon Cordell

  We have a web application that gets deployed to multiple regions around our state. An instance of the application for each region. We maintain a staging and production (master) branch in our repository, but we were wondering what is the best way of maintaining each instances codebase. It's similar at the core, but we have to give each region the ability to make specific requests that may not make it into the core of the application. Right now we have branches for each region, like region_one_staging, and region_one_production. At the rate we're growing we'll have hundreds of branches here in the next few years. Is there a better way to do this?

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• Siebel 2012-IP Release is now GA

  - by Richard Lefebvre

  The Siebel development team is pleased to announce the general availability of the highly anticipated 2012 Siebel Innovation Pack on 12/12/2012. The journey began last year as a concept at Open World that invigorated the Siebel customer base and partners across the globe, culminating in this 2012-IP release that delivers much valued usability enhancements on an existing release. Open UI and Siebel Mobile are the key innovations that are released as part of the 2012-IP on both 8.1.1.9 and the 8.2.2.2 releases. These innovations are a giant leap forward in facilitating Siebel usability while supporting multiple browsers and devices. Siebel Mobile released as part of the IP provide connected Mobile solutions that support key Horizontal Sales, Field Service, Life Sciences and Consumer Goods flows. See the Siebel Open UI Dada Sheet here.

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• Unable to install 12.10 on asus r500v

  - by bmdr38

  I have been unable to get beyond the grub boot screen of the live dvd/usb. The Try Ubuntu without installing, Install Ubuntu, etc menu shows, and I have tried adding/replacing nomodeset and no splash with neither helping. Even "Check disc for defects" does not display anything when selected. I am at a complete loss as to how to fix this one. I have had many successful installs in the past, but this is definitely a first for me. Just as FYI, Gfx card: Geforce GT 635M I realize this particular card has Optimus on it, however even the alternative boot/command line install fails to load. Any help would be appreciated. I realize there have been multiple threads on this, but none of the methods within them have solved this yet. Thanks

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• Dependency Injection Confusion

  - by James

  I think I have a decent grasp of what Dependency Inversion principle (DIP) is, my confusion is more around dependency injection. My understanding is the whole point of DI is to decouple parts of an application, to allow changes in one part without effecting another, assuming the interface does not change. For examples sake, we have this public class MyClass(IMyInterface interface) { public MyClass { interface.DoSomething(); } } public interface IMyInterface { void DoSomething(); } How is this var iocContainer = new UnityContainer(); iocContainer.Resolve<MyClass>(); better practice than doing this //if multiple implementations are possible, could use a factory here. IMyInterface interface = new InterfaceImplementation(); var myClass = new MyClass(interface); It may be I am missing a very important point, but I am failing to see what is gained. I am aware that using an IOC container I can easily handle an objects life cycle, which is a +1 but I don't think that is core to what IOC is about.

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