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  • Creating an OpenGL FPS camera: I have the position and orientation vectors, now what?

    - by Synthetix
    I have been struggling to create a first person camera in OpenGL ES 2.0 without using gluLookAt(). I grab the camera's orientation vectors (the way it's looking) from the current modelview matrix, and use that to calculate the new forward/backward (Z) translation value. I then calculate the strafe (X) value from the dot product of Z and Y (which is always 1.0). So, I have all the information I need to create a view matrix, but how do I do that without using gluLookAt? Almost all the examples I've seen use gluLookAt, but no such function exists in OpenGL ES 2.0. Besides, one of the moderators on cprogramming.com mentioned that gluLookAt is not appropriate for FPS cameras: http://cboard.cprogramming.com/game-programming/135390-how-properly-move-strafe-yaw-pitch-camera-opengl-glut-using-glulookat.html I am really confused by all the conflicting information I'm getting. I just want to create a first person camera that goes forward (W,S keys), side-to-side (A,D keys) and rotates around its center (Y axis only), Wolfenstein style. Any help on this would be much appreciated!

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  • Which libraries I need for projects in Mono Develop to work Properly?

    - by Curious Apprentice
    I want to test each and every project type available on mono. But due to some package dependencies Im unable to run any of "Hello World" project. I have less idea what libraries I need for what. Few days back I have installed gtk-sharp2 but still while running an VB.net Gtk# or C# Gtk# Im getting compilation errors that cli.Gtk does not exist. Is there a way through which I can solve all dependencies by one click ?! I atleast once want to try learning linux app programming. Without the proper tools it is not possible. Please help :) Mono Develop Version : 2.8.6.3 Ubuntu 12.04 32 Bit

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  • How strict are standard employer IP agreements about coding outside of work?

    - by JosephRT
    I'm in negotiations for a position with a large corporation and I'm reading their employment terms. In their IP/copyright section they state that anything that I do outside of work that is "similar" to what I perform on the job is also theirs. I understand that it's intentionally very vague to protect them, but I'm also a little nervous that it could be abused. The way I read it, anything I produce outside of work could be claimed as well, because it would fall under "programming". Is this relatively standard? Could I negotiate more specific terms (I have asked if I could get clarification)? Should I be worried that they could abuse this? I just don't want to be caught in a situation where come up with a (potentially) great idea outside of work and they swoop down and lay claim to it.

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  • unable to start regionservers in HBase

    - by amsal
    I have a problem starting regionservers on slave PCs. When I enlist only master PC in conf/regionservers everything works fine but when I add two more slaves to it the hbase does not start. If I delete all hbase folders in the tmp folder from all PCs and then start regionserver (with 3 regionservers enlisted) the hbase gets started but when I try to create a table it again fails (gets stuck). I am using hadoop 0.20.0 which is working fine and hbase 0.92.0. I have 3 PCs in cluster, one master and two slaves. Also tell that is DNS (both forward and backward lookup working) necessary for hbase in my case? Is there any way to replicate hbase table to all region servers? I.e. I want to have a copy of table at each PC and want to access them locally (when I execute map task they should use their local copy of hbase table).

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  • Only can move the pointer after upgrading

    - by Mystogan
    I made a partition on my desktop pc, 100 GB and installed Ubuntu 12.10 on it. It was pretty slow first thought it had to install updates or something, so I rebooted it. Now after the login it looks like everything freezes, I can move my mouse only, but that's it! I can see my desktop and launcher, but the task bar doesn't display time and misc system info, only a black bar, I downloaded the Android SDK pack and installed vlc media player before I rebooted. My computer info: 1 TB HDD 8 GB ddr3 RAM ATI Radeon 4890 videocard (1 GB) AMD Phenom 2 x4 black 3, 2ghz CPU (64 bits)

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  • Scripted Motion Paths (?) (XNA)

    - by Peteyslatts
    Ok, so the title isn't the greatest because this is a lot more general. Say I want to have the player be able to hit A and have their ship model roll to the right, and shift to the right of the screen, while the camera stays centered. Would I do that through programming (ie. set waypoints for the model and keep the camera focus still) or do it through animation ( so the ship model actually rolls and moves right, and just play those frames)(I actually don't know how to do this kind of 3D animation yet, haven't looked into it. Adding it to my To Do List) This is a really vague question I know, I'll try and answer any questions. Thanks, Peter

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  • Which game library/engine to choose?

    - by AllTheThingsSheSaid
    I'm not a programming beginner at all. I've tried 2 libraries/engines so far, allegro and Unity. For allegro. i think its not good if i wanna make a career in gaming industry since its not powerful enough. I don't feel comfortable with unity. Its more like a software like photoshop or flash. You can do almost everything with pre-defined functions, tools and with less coding. I need something which offers less tools and pre defined functions and more coding work. It would be awesome if its free and c/c++ based. I need both 2D/3D. and please, don't tell me to make my own library, i am not "that" advance. Any other information about gaming industry would be greatly appreciated.

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  • OpenSuse 12.2 sort en version finale : plus stable et performant avec Linux 3.4, KDE 4.8, LibreOffice 3.5

    OpenSuse 12.2 disponible : plus stable et performant avec Linux 3.4, KDE 4.8, LibreOffice 3.5 et plusieurs autres logiciels open sources La version stable de la mise à jour 12.2 de la distribution Linux OpenSuse est disponible en téléchargement. Attendu initialement pour le 11 juillet dernier, OpenSuse 12.2 accuse quelques mois de retard, lui permettant de vanter sa stabilité et son gain de performance. [IMG]http://rdonfack.developpez.com/images/opensuse.jpg[/IMG] Fièrement appuyé par le noyau Linux 3.4, qui lui fait don de sa couche de stockage plus rapide pour empêcher les blocages lors des transferts, OpenSuse embarque la bibliothèque de base glibc 2.15, ...

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  • Multiple ( V- / I- ) Buffers, is it sane?

    - by Techie
    Currently I am developing an RTS game using XNA ( / ANX.Framework ). There is one thing bothers me. I am not sure in what way or how to organise Buffers. Should I use a new Vertexbuffer for any object ( e.g. a Char, a Table, an model ) or is it better to use ONE HUGE/ BIG Buffer to store any geometry in? I am still new to 3D Programming though I finished yet couple games using DirectX 9. Well, I hope this question qin't a duplicate and I appreciate any answer leading me into the right direction.

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  • A known issue with security update 979906 in which the Microsoft .NET Framework 1.1 Service Pack 1 p

    219714 ... A known issue with security update 979906 in which the Microsoft .NET Framework 1.1 Service Pack 1 package is displayed as "1.0 security update"This RSS feed provided by kbAlerz.com.Visit kbAlertz.com to subscribe. It's 100% free and you'll be able to recieve e-mail or RSS updates for the technologies you pick from the Microsoft Knowledge Base....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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  • Microsoft décide de bannir iTunes de Windows, suite à l'arrivée des doubles standards

    Microsoft décide de bannir iTunes de Windows, suite à l'arrivée des doubles standards Bill Gates vient d'annoncer qu'iTunes serait dorénavant banni de son système d'exploitation Windows. Voici ses déclarations officielles sur le sujet : "Au départ, nous étions très satisfaits qu'Apple ai déployé iTunes sur Windows ; nous avons gagné beaucoup d'utilisateurs grâce à cette seule application. Et puis nous avons entendu dire, par une source fiable, qu'Apple utilisait la même base de code pour iTunes Mac que pour la version Windows. Pire encore, il nous est apparu suite à une inspection plus approfondie qu'iTunes n'utilisait même pas l'API Windows ! Apple a conçu son propre système de scroll sans s'insp...

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  • Les tests d'interopérabilités sur HTTP 2.0 bientôt amorcés, la navigation internet sera plus rapide grâce au multiplexage

    Les tests d'interopérabilités sur HTTP 2.0 bientôt amorcés, la navigation internet sera plus rapide grâce au multiplexageLe web est susceptible de changer fondamentalement bientôt. L'IETF (Internet Engineering Task Force) prépare la version 2.0 du protocole HTTP, a expliqué Mark Nottingham qui dirige actuellement l'équipe d'IETF HTTPBIS. Pour sa première ébauche, HTTP 2.0 s'appuiera sur SPDY, le protocole développé par Google. Le responsable de l'équipe de travail prévoit toutefois des changements significatifs. Parmi eux, un nouvel algorithme de compression d'en-tête. Il faut aussi noter que bien que SPDY n'autorise que les connexions chiffrées, pour HTTP 2.0 elles seront facultatives. HTTP 2.0...

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  • How do I know if I've gone too far with processing things in a game?

    - by ThePlan
    A common programming quote I see every day is: Premature optimization is the root of all evil! I admit I'm one of those guys that like to do premature optimization in a pretty obssessive manner but that's probably because I'm not aware how powerful modern processors are. I can think of lots of sollutions for a problem, but all of them are tough on the memory side, and I keep thinking "This will hurt me more in the future when I'll have to re-do it because it's bad performance-wise." How do you know when the code you are thinking of is going too far and is not a case of premature optimization? How much can your game handle at a time before performance becomes a problem?

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  • Accepting a numerical range in a function call

    - by dekpos
    I have encountered two ways of doing it: void foo(int from, int to); /* 'from' inclusive, 'to' exclusive */ void foo(int startIndex, int rangelength); Has one style historically been preferred over the other? If so, was it just a matter of convention or was it due to some deeper underlying reason? I'm currently programming in Java and noticed that the Arrays class uses the former style. The exclusivity of the to argument felt somewhat unintuitive to me, which led me to ask this question.

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  • Issues with upgrade to ubuntu 14.04

    - by SUBPUR
    First, I should say that I am a total beginner. When answering, please do not take for granted that I understand even the most basic step. Now for my question: Yesterday, I was given the option to update to ubuntu 14.04. I clicked yes, and the system took about 2.5 hours to accomplish this task. Now, whenever I log into my user account, I get an error message and then I am asked to authenticate my user account. When I try to enter the password, my computer freezes. Please help, what can I do to fix this?

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  • More complex learning source for C# .NET [closed]

    - by Leron
    By complex I don't mean more difficult but including a larger area of possibilities cover. I've started a few years ago with PHP and the transition from learning the syntax of the language and the basic logical structures to working with databases, including JavaScript and so on was very short. And now I'm more interested in studying working with languages like Java/C#. Recently I spend a lot of time reading and writing some simple console applications, I've read almost 2K pages for C# programming and still don't know how to connect to database for example. Just for info I'm interested in web development, socket programing and live streaming, don't know if I'm exceeding myself too much writing that but despite that I want to find some books/internet sources where I can extend my current knowledge of C#/.NET, start using database queries, maybe try something more complicated webwise.

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  • Dancer.js : une API audio open source de haut niveau en JavaScript pour lier animations visuelles et musique

    Créez de belles animations visuelles sur vos musiques préférées grâce à ce framework javascript Vous avez forcément, à un moment ou à un autre, utilisé cette fonctionnalité sur votre lecteur de musique préféré. Je parle de ces animations graphiques à base de lignes colorées, de bulles qui éclatent et bien d'autres formes au rythme de votre chanson favorite. Et bien il est maintenant possible d'intégrer de telles animations dans votre site web grâce à Dancer.js ! Cette API est utilisable avec l'API Audio Data de Mozilla ainsi qu'avec l'API Web Audio de Webkit et flash fallback. Dancer.js utilise les fréquences audio en temps réel pour les lier à des effe...

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  • Should I go with Android or Try Windows Phone 7?

    - by Omnion
    I already know C# and am familiar with XNA. So it would make sense to develop for the Windows Phone 7, but would it be worth while to learn Java, get familiar with Android, and instead develop for Android devices? Android has been around longer so it would probably have a larger user base. Is it really worth it to try to develop for one of the more popular mobile platforms. (Windows Phone 7 has been out for like a month?) I haven't tried either one yet though. I'm also going to buy a phone, so this decision would probably influence the phone that I buy. (to develop/test on)

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  • How can I build this payment receipt/booking application?

    - by Festus
    I'm planning to build a payment receipt/booking application for a media company with several branches in different locations. The application should be able to move data across the network/internet to a central database where the administrator/accountant in a different location will be able to see the result of the entire job for the day from each branch. Application will run on windows environment. Will be able to send result of the booking to a Point Of Sales printer for print output. Now, I'm confused about choosing the right programming language to accomplish this task. I'm between beginner/intermediate level in PHP, I know HTML/CSS and JavaScript. I have tried to do this in PHP but, I'm face with several challenges and I fear for the POS part since PHP application run on the web browser. I don't know if python will be best suited for this and how long will it take someone with my experience level to pick up python. Any suggestion will be highly appreciated.

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  • What are steps in making an operating system in C ? [duplicate]

    - by ps06756
    This question already has an answer here: Compiler/OS Design - Where to start [closed] 3 answers I am trying to make an my own OS. This is for educational purpose only, so that I get to understand the internals as well as get a good idea of low level programming. I have some prior application development experience in C#/python/C++/C. I am a noob in assembly language(very less experience and knowledge). I understand that in writing an operating system,we can't go without assembly language. Currently, I have just printed a string in assembly language in the boot sector using qemu and BIOS interrupts. What I want is that, can someone specifically point out the steps that I need to follow to make my operating systems run C programs. So that, I can start writing my OS in C. Any other piece of advice to help a newbie, regarding the same is also welcome. Although, I have looked into many os development related tutorials/websites, I can't seem to find this information anywhere.

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  • What framework for text rating site?

    - by problemofficer
    I want to start a "rate my"-style site. The rated objects are mostly texts. I want it to be rather simple. Features I need: object rating (thumb up, thumb down) object comments object tags related object presentation based on tags user authentication and management private message system sanity checks for text inputs (i.e. prevention of code injections) cache open source runs on GNU/Linux I would gladly take something that is tailored for my scenario but a generic framework would be fine too. I simply don't want to write stuff like user authentication that is been written a million times and risking security flaws. Programming language is irrelevant but python/php preferred.

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  • Android Java: Way to effectively pause system time while debugging?

    - by TheMaster42
    In my project, I call nanoTime and use that to get a deltaTime which I pass to my entities and animations. However, while debugging (for example, stepping through my code), the system time on my phone is happily chugging along, so it's impossible to look at, say, two sequential frames of data in the debugger (since by the time I'm done looking at the first frame, the system time has continued to move ahead by seconds or even minutes). Is there a programming practice or method to pause the system clock (or a way for my code to intercept and fake my deltaTime) whenever I pause execution from the debugger? Additional Information: I'm using Eclipse Classic with the ADT plugin and a Samsung SII, coding in Java. My code invoking nanoTime: http://pastebin.com/0ZciyBtN I do all display via a Canvas object (2D sprites and animations).

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  • How to name a clamp function that only clamps from one side?

    - by dog_funtom
    Clamp() is a function that ensures that provided variable is in provided range. You can find such function in .NET, in Unity, and probably anywhere. While it is useful, I often need to clamp my value from one side only. For example, to ensure that float is always non-negative or always positive (like radius value from inspector). I used names ClampFromAbove() and ClampFromBelow(), but I wonder if such names is good or even grammatically valid in programming-English. Also, it probably make sense to distinguish non-negative case too. How'd you name such function? Something like EnsureNonNegative()? My intention is creating pair of extension methods and use them like this: var normalizedRadius = originalRadius.ClampFromBelow(0.0001); var distance = someVector.Magnitude.ClampFromAbove(maxDistance);

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  • Ruby on rails not popular in big international IT companies?

    - by maro
    I would like to ask you for advice more experienced ROR developers. I am new in programming and like to idea of ROR and I am before the decision on which programing language to specialize Java vs ROR. In the future I wish to learn for bigger international IT companies (IBM, Accenture etc.) but as I am reading their job openings, most of them are hiring Java, C++, .NET... Is the ROR used only in startups or also in bigger companies as well? What should be the reasons of their preference of Java over ROR?

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  • How can I apply Readme Driven Development to an ongoing project?

    - by Metalcoder
    I'm assigned to a project where the goal is to update an existing software. This software was developed in a totally ad hoc manner, which means that any documentation generated is outdated, confused and just plain useless. I do not want to retroactivelly produce all the missing artifacts, since this would just be a waste of time. The code base is ugly, and really need some serious refactoring, but this is another story. What I want is to apply Readme Driven Development to guide this project. So, basically, I want to write a Readme, which will document every change meaningful at the user level. The problem is, I have no idea about how to structure this document. For me, it's pretty clear that it should have a different layout than the traditional Readme. I really want to document changes, and not the current state of affairs. Any ideas?

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