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  • OGRE 3D: How to create very basic gameworld [on hold]

    - by skiwi
    I'm considering trying around to create an FPS (First person shooter), using the Ogre 3D engine. I have done the Basic Tutorials (except CEGUI), and have read through the Intermediate Tutorial, I understand some of the more advanced concepts, but I'm stuck with very simple concepts. First of all: I would want to use some tiles (square ones, with relative little height) as the floor, I guess I need to set up a loop to get those tiles done. But how would I go about creating those tiles exactly? Like making it to be their own mesh, and then I would need to find some texture. Secondly: I guess I can derive the camera and movement functions from the basic tutorial. But I'll be needing a "soldier" (anything does for now), what is the best way to create a moderately decent looking soldier? (Or obtain a decent one from an open library?) And thirdly: How can I ensure that the soldier is actually walking on the ground, instead of mid air? Will raycasting into the ground + adjust position based on that, suffice?

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  • External monitor on old Dell 700m?

    - by Adam Henne
    Okay, linux noob. I installed 10.04 on an old Dell 700m in hopes of using it as a media center device. That seems to work great, except now it won't output to the external monitor. VGA cable works fine, TV recognizes other computers fine, it's the laptop that won't output. Turns out that the 700m, unlike every other computer out there, doesn't have a Fn hotkey to switch monitors. The only way to do it in Windows was to go through the Control Panel. In Ubuntu, though, the Monitor setup won't detect or recognize any monitors. The laptop display works fine, but I can't adjust or add anything. I did a little research and found suggestions for older Ubuntu builds involving the xorg.conf. I tried one out, in spite of my unfamiliarity, and it's screwed the whole display big time. I can fix that with a clean reinstall, that's no problem, but I'm cautious about editing xorg again. Any suggestions? Thank you!

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  • An online version of ClearTrace

    - by Bill Graziano
    When I visit clients for the first time and conduct a performance review I introduce them to ClearTrace. It’s still the best way I know to identify exactly which queries are consuming the most resources.  The downside is that it needs to be downloaded and create a database to store the results.  I finally decided it would be easier if I could just upload a trace immediately. You can find the online version of ClearTrace at TraceTune.com.  It provides a simple way to upload a trace file and see exactly which stored procedures or SQL statements consume the most CPU and disk.   This is still a work in progress as I try to determine exactly which features from ClearTrace are important.  I’ve also limited the file upload to 10MB in this beta release.  That might not sound like much but I get over 20,000 events using this stored procedure to generate the trace. If you’re looking for something to do on a Friday, I’d suggest a little performance tuning.  Generating 10MB of trace data doesn’t take long at all and in a short time you’ll see exactly which SQL statements you need to tune first.

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  • Java and C# in web development [on hold]

    - by azalut
    I am wondering whether C# development(ASP.NET) is rather kind of "rapid development" or something "big" like JavaEE/Spring? We all know, that RoR or Django are really rapid-development frameworks - and so - is C# closer to Java "long-timed-development" or to frameworks like the two above - Django, RoR? I am, for now, an amateur Java programmer and sometimes I get annoyed with the amount of code that have to be written to create even a short CRUD app. We need a lot of skills to create at least a small app. I want some change, at least for some time and learn something new. I tried (just few hours) first: RoR, then Django and now I am writing in C#. It seems to be like Java but a little bit extended. In respect of future work as a professional coder - Is it profitable to know both competitive technologies like Java (and its frameworks) and C# with .NET(ASP.NET for example)? Maybe better choice is Python? Or just stop being stupid and still work with Java but with another framework(and master my Java skills) or JavaScript, jQuery to be better at web-development? Actually this question depends on your own opinions that is why I know that this question could be blocked by admins. But main question is in the top of the post I mean: is C# web-development rapid or closer to Java? I am afraid, that if I don't try, I will regret in the future, when I awake and think: oh my god, how could I not get familiar with (another_technology_or_language) Thanks for your attention :) ps I had asked the same question on stackoverflow, but it was hold because of being opinion based. Hope it fits here ;)

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  • Java EE Basic Training with Yakov Fain

    - by reza_rahman
    Those of us that have been around Java/Java EE for a little while sometimes tend to forget that Java is still an ever expanding ecosystem with many newcomers. Fortunately, not everyone misses this perspective, including well-respected Java veteran Yakov Fain. Yakov recently started a free online video tutorial series focused on Java and Java EE for absolute beginners. The first few parts of the series focused on Java SE but now Yakov is beginning to cover the very basics of Java EE. In a recent video he covered: The basics of the JCP, JSRs and Java EE How to get started with GlassFish 4 The basics of Servlets Developing Java EE/Servlets using Eclipse and GlassFish The excellent video is posted below. The slides for the tutorial series generally are available here. If there are folks you know that would benefit from this content, please do pass on word. Even if you are an experienced developer, it sometimes helps to sit back and review the basics... It's quite remarkable that someone of Yakov's stature took the time out to create content for absolute beginners. For those unaware, Yakov is one of the earliest Java champions and one would be very hard pressed to match his many contributions to the Java community. The tutorial demonstrates his continued passion, commitment and humility.

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  • Ubuntu 12.10 wont boot

    - by John Mark High
    im new to using Ubuntu and just bought a HP Pavilion g6-2240sa with windows 8 pre installed. I made a bootable USB with Ubuntu on it and installed alsongside windows, for 2 days it worked fine, I got into Ubuntu by doing an advanced restart from windows 8 and then booting Ubuntu from the partition it made. When i did the advanced restart today there was only 1 HDD i could select ( there were 3 before windows, a restore partition that was already there when i got the computer and Ubuntu) so i booted from the USB again and re-installed Ubuntu. then did an advanced restart and the 3 partitions where there again, i booted from Ubuntu and now heres my problem. I get the Ubuntu background when its loading then its just a black screen with some writing, its not on long enough to read, then just a black screen with a white _ and the top left corner that does nothing, i have to restat the computer and it auto boots into windows 8. im a little confused as the first time i installed Ubuntu it worked fine until the partition dissaperd), the second time i installed i did everything the same except it found the old Ubuntu so i reinstalled it and now is donst work.

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  • Partition tool with console UI (as in server installation)?

    - by lepe
    Back in 2006, Ray (3DLover) posted the same question in: http://ubuntuforums.org/showthread.php?t=309680 but none of the answers were really useful. Now with a little help from AskUbuntu community, I would like to repeat his question again to see if this time it can be answered correctly. So this is the question (and what I wish too): I'm looking for a UI tool for managing partitions in a console. I have installed Ubuntu Server, so I don't have X Windows at all. fdisk and sfdisk are entirely command line. parted is slightly better, but it's not really a UI. cfdisk has somewhat of a UI, but it only works on one disk at a time, and there's no advanced options like configuring LVM or RAID. Just partitioning. I love the partition tool that is available during the OS install procedure. You can partition, configure RAID's and LMV sets. It can format the partitions with several different file systems, it can set labels, mount options and it can insert your volumes into your fstab. Is this tool available as a stand-alone program? I can't find it anywhere. I think it's called parted_server, but I can't find much information about where to get it. In the past, I have run the Ubuntu install procedure just to use the partition manager that comes with it. (canceling the install after making my partition edits) Anyone help me on this? Thanks -Ray Thanks in advance.

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  • Access Control Service: Walkthrough Videos of Web Application, SOAP, REST and Silverlight Integration

    - by Your DisplayName here!
    Over the weekend I worked a little more on my ACS2 sample. Instead of writing it all down, I decided to quickly record four short videos that cover the relevant features and code. Have fun ;) Part 1 – Overview This video does a quick walkthrough of the solution and shows the web application part. This includes driving the sign in UI via JavaScript (thanks Matias) as well as the registration logic I wrote about here. watch Part 2 – SOAP Service and Client The sample app also exposes a WCF SOAP service. This video shows how to wire up the service to ACS and hows how to create a client that first requests a token from an IdP and then sends this token to ACS. watch Part 3 – REST Service and Client This part shows how to set up a WCF REST service that consumes SWT tokens from ACS. Unfortunately there is currently no standard WIF plumbing for REST. For the service integration I had to combine a lot of code from different sources (kzu, zulfiq) as well as the WIF SDK and OAuth CTPs together. But it is working. watch Part 4 – Silverlight and Web Identity Integration This part took by far the most time to write. The Silverlight Client shows ho to sign in to the application using a registered identity provider (including web identities) and using the resulting SWT token to call our REST service. This is designed to be a desktop (OOB) client application (thanks to Jörg for the UI magic). watch code download

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  • How can I get a gnome environment in my VNC session?

    - by adante
    When I start VNC I have an empty desktop without the ability to manage windows or start apps etc). I'd like to have a desktop environment to be able to basic desktop things (someone asked me why I wanted this - I can't really say except that I would like my computer to be useful). My focus at the moment is basically having a working environment with as little time/effort expenditure as possible, as opposed to spending a full-time week learning the most trivial and arcane details of x, vnc, gnome or whatever passes for the current desktop architecture standard of the hour. What command or series of hoops do I have to jump to to achieve this? I have tried running gnome-session but it looks like it is attempting to run compiz and fails spectacularly. I've also tried running metacity but this simply gives me a titlebars to my windows (this is great! But I'd also like the taskbar and other stuff). I considered trying to start gnome-session in a way that it uses metacity instead of compiz. But I don't know how to do this. Tutorials on the net exist for changing to metacity - once you already have compiz running. Not so useful if compiz does not run.

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  • Terrible App Review of the Week&ndash;October 2nd

    - by David Paquette
    As some people know, I have a few apps in the Windows Phone Store.  One of these apps was intended to be a gimmicky app that did NOT really do anything useful.  It was just a funny little app that you probably try it once, then almost immediately uninstall.  To my surprise, this app ended up in some of the Top App lists and actually got a large number of downloads (for the Windows Phone Store).  Along with these downloads came a large number of really terrible and offensive reviews.  People are insulting me and saying awful things that they would never say to someone in person (I hope).  I am ok with this.  I can take the bad reviews and it doesn’t really bother me, but I still think that people are incredibly dis-respectful with their app reviews.  So..I am going to start sharing the best of the worst reviews.  If by chance this is your review, please contact me.  I would love to have a quick chat… Literally THE crappiest app I could of downloaded. You might as well rub dog *** in your eyes..... You'd see more!!! Stan8976   P.S. I am not particularly proud of this app, so I am not going to reveal the name. However, as you see more of these amazing reviews, I think you might be able to guess which app it is.

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  • Kubuntu 11.10 Lot of Networking problems

    - by Cobraone
    Since I upgrade to 11.10 I have a lot of problems with KDE. First of all there are problems in configuring a static IP address. Just to explain @home I have a normal fiber ADSL and I use a DHCP. When I go to a customer I must insert a static IP address. With ifconfig everything seems ok but there is something wrong in searching DNS names. (I have installed Ubuntu and was going ok again). Now I Have reinstalled again Kubuntu 11.10 and I have the same problem in addition today I have discovered that if I connect to a network in another customer office the desktop freezes and I could only switch between windows with alt+tab. No FN key or right click to open run command works. So i unplugged network (configuration is just DHCP here) and tried on another position in office. It was the same. My Laptop freezes when connected, a fedora 14 of a friend works. So I decided to connect my Galaxy S II as USB network device. Everything is ok for like 3 minutes. When I noticed a little loss of signal again the desktop freezes and i must work (like now) just switching between windows with alt+tab). Additional information: Unplugging network or restarting it via Konsole does not not solve the freezing problem. Every time I must open a console and reboot. Any idea of what tests to do ? Just a recommendation: If I must post here logs or something else please guide me. I use Linux since Ubuntu 9 but I am not an "expert".

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  • Dirt compression from vehicle tires

    - by Mungoid
    So I kinda have this working but its not correct because it just averages, so I wanted to know if anyone here has any ideas. I'm trying to simulate loose dirt compression under the tires of a vehicle to reduce the potential bumpiness of 'chunky' terrain. Currently how I do this is that I have a bounding box shape around my tires, set a little lower so they intersect with the terrain. Each frame, I (currently) average all of the heights of each point in the terrain that are within the box bounds of that tire, and then set them all to that average. Clearly this won't work in most cases because, for example, if i'm on a hill, the terrain will deform way too much. One way I thought was to have a max and min amount the points could raise and lower but that still doesn't seem to work properly and sometimes looks more like steps than smooth dirt. I wanna say that there is probably a bit more to this that what i'm currently doing but I am not sure where to look. Could anyone here shed some light on this subject? Would I benefit any by maybe looking up some smoothing algorith or something similar?

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  • Finite Numbers and ExplorerCanvas

    - by PhubarBaz
    I was working on my online mathematical graphing application, CloudGraph, and trying to make it work in IE. The app uses the HTML5 canvas element to draw graphs. Since IE doesn't support canvas yet I use ExplorerCanvas to provide that support for IE. However, it seems that when using excanvas, if you try to moveTo or drawTo a point that is not finite it loses it's mind and stops drawing anything else after that. I had no such problems in Firefox or Chrome so it took me awhile to figure out what was going on. Next I discovered that I needed a way to check if a variable was NaN or Inifinity or any other non-finite value so I could avoid calling moveTo() in that case. I started writing a long if statement, then I thought there has to be a better way. Sure enough there was. There just happens to be an isFinite() function built into Javascript just for this purpose. Who knew! It works great. Another difference I discovered with excanvas is that you must specify a starting point using a moveTo() when beginning a drawing path. Again, Chrome and Firefox are a lot more forgiving in this area so it took me a while to figure out why my lines weren't drawing. But, all is happy now and I'm a little wiser to the ways of the canvas.

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  • Quitting a small start-up where you are a primary developer?

    - by programmx10
    Just curious to hear from other people who may have been in similar situations. I work for a small startup (very small) where I am the main developer for a major part of the app they are building, the other dev they have does a different area of work than I do so couldn't take over my part. I've been with the company 5 months, or so, but I am looking at going to a more stable company soon because its just getting to be too much stress, overtime, pressure, etc for too little benefit and I miss working with other developers who can help out on a project. The guy is happy with my work and I think I've helped them get pretty far but I've realized I just don't like being this much "on the edge" as its hard to tell what the direction of the company is going to be since its so new. Also, even though I'm the main dev for the project, I would still only consider myself a mid-level dev and am selling myself as such for the new job search. Just to add more detail, I'm not a partner or anything in the company and this was never discussed, so I just work on a W2 (with no benefits of course). I work at home so that makes it easier to leave, I guess, but I don't want to just screw the guy over but also don't want to be tied in for too long. Obviously I would plan to give 2 weeks notice at least, but should I give more? How should I bring up the subject because I know its going to be a touchy thing to bring up. Any advice is appreciated UPDATE: Thanks everyone for posting on this, I have now just completed the process of accepting an offer with a larger company and quitting the startup. I have given 2 weeks notice and have offered to make myself available after that if needed, basically its a really small company at this point so it would only be 1 dev that I would have to deal with... anyways, it looks like it may work out well as far as me maintaining a good relationship with the founder for future work together, I made it out to be more of a personal / lifestyle issue than about their flaws / shortcomings which definitely seems to help in leaving on a good note

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  • Following a set of points?

    - by user1010005
    Lets assume that i have a set of path that an entity should follow : const int Paths = 2 Vector2D<float> Path[Paths] = { Vector2D(100,0),Vector2D(100,50) }; Now i define my entity's position in a 2D vector as follows : Vector2D<float> FollowerPosition(0,0); And now i would like to move the "follower" to the path at index 1 : int PathPosition = 0; //Start with path 1 Currently i do this : Vector2D<float>& Target = Path[PathPosition]; bool Changed = false; if (FollowerPosition.X < Target.X) FollowerPosition.X += Vel,Changed = true; if (FollowerPosition.X > Target.X) FollowerPosition.X -= Vel,Changed = true; if (FollowerPosition.Y < Target.Y) FollowerPosition.Y += Vel;,Changed = true; if (FollowerPosition.Y > Target.Y) FollowerPosition.Y -= Vel,Changed = true; if (!Changed) { PathPosition = PathPosition + 1; if (PathPosition > Paths) PathPosition = 0; } Which works except for one little detail : The movement is not smooth!! ...So i would like to ask if anyone sees anything wrong with my code. Thanks and sorry for my english.

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  • ASP.NET MVC Cookbook - public review

    - by asiemer
    I have recently started writing another book.  The topic of this book is ASP.NET MVC.  This book differs from my previous book in that rather than working towards building one project from end to end - this book will demonstrate specific topics from end to end.  It is a recipe book (hence the cookbook name) and will be part of the Packt Publishing cookbook series.  An example recipe in this book might be how to consume JSON, creating a master /details page, jquery modal popups, custom ActionResults, etc.  Basically anything recipe oriented around the topic of ASP.NET MVC might be acceptable.  If you are interested in helping out with the review process you can join the "ASP.NET MVC 2 Cookbook-review" group on Google here: http://groups.google.com/group/aspnet-mvc-2-cookbook-review Currently the suggested TOC for the project is listed.  Also, chapters 1, 2, and most of 8 are posted.  Chapter 5 should be available tonight or tomorrow. In addition to reporting any errors that you might find (much appreciated), I am very interested in hearing about recipes that you want included, expanded, or removed (as being redundant or overly simple).  Any input is appreciated!  Hearing user feedback after the book is complete is a little late in my opinion (unless it is positive feedback of course). Thank you!

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  • Should I think about switching to another platform as a .Net developer? [closed]

    - by A. Karimi
    I’ve been a developer for about 10 years and I’ve almost worked on Microsoft stack. At the last several years I’ve been introduced to some good practices such as IoC and other primary design patterns. Now I feel so much comfortable using these patterns and concepts and I’m very angry why we didn’t do that earlier! They exist and used by many developers since more than 5 years ago but why I and many of my colleagues began using them a little later. As you may know Java developers are more ahead in these fields (concepts, patterns and …) than .Net developers. Am I right? Now the question is, “Why we (as .NET developers) weren’t ahead so much? Isn’t it because we are using Microsoft stack?”. I know ALT.NET but why we are trying make a closed ecosystem open and finding alternatives for Microsoft Echo Chamber, while there are natively open ecosystems like Java!? I've always liked most of the Microsoft works very much but I’m worried about this issue. I am even ask myself should I move to another platform?

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  • Build 2013&ndash;Keynote Thoughts

    - by D'Arcy Lussier
    Originally posted on: http://geekswithblogs.net/dlussier/archive/2013/06/26/153243.aspxSome thoughts on the Build 2013 keynote. They Listened to Feedback while Keeping to their Plans I am one of the people in the “bring back the start menu” camp. I want my start menu. I *like* my start menu. Microsoft heard that and put it back, fantastic. But they implemented it in a way that still pushes the Windows 8 UI – and I’m actually pretty happy with it. When you hit the Start menu, you get the live-tiles displayed overlaying the desktop. But you can also swipe from the bottom to get the “all-applications” view. This, in essense, is really what those that like the Start Menu want. I believe it was mentioned that you can configure the all-applications view to be the default. They’re Committed to Improving Windows 8 The commitment to rapid deployments Ballmer talked about is crucial to Windows 8’s success. They need to keep it evolving quickly to maintain the interest of users and developers. I think the little improvements they showed are excellent (hands-free mode, multi window docking, better multi-monitor support, new developer controls, etc.). Hardware Vendors are Committed to Windows 8 They showed off a number of new hardware products (Windows 8 and Windows Phone). The Surface’s introduction to the market has done nothing to dissuade their hardware partners. Bing as a Platform is Huge for Developers!!! This was the biggest take-away from the keynote! What the team is doing with Bing not as a search engine but as a developer API is very impressive! I’m going to be diving into this over the rest of Build so watch more blog posts coming on it. Azure, Office 365, and other topics will be covered at tomorrow’s keynote. So far, great kick off to Build. Now on to sessions! D

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  • Fresh Ubuntu 12.10 install no desktop or wing bar

    - by Travis
    After a fresh installm of ubuntu 12.10 (complete erase) after logging in it appears i have no taskbar or much of anything, although i can still execute my terminal with CTRL+ALT+T. i looked around a little, seems i'm not the only person who has had this problem. I found here: http://ubuntuforums.org/showthread.php?p=12303179#post12303179 From there, i found myself here: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-updates/+bug/1068341 I followed precisely the instructions provided which were: this problem is solved this way Switch to a terminal (Ctrl-Alt-F1). Login as your username. Install linux source (sudo apt-get install linux-source) and headers (sudo apt-get install linux-headers-3.5.0-17-generic). Uninstall nvidia driver - this depends on which version you installed (sudo apt-get remove nvidia-current or sudo apt-get remove nvidia-current-updates or sudo apt-get remove nvidia-experimental-304). Reinstall nvidia driver (sudo apt-get install nvidia-current-updates). If it successfully installs, restart the computer (sudo shutdown -r now). Source Desktop does not show when I installed nvidia drivers! I have rebooted, and i am still having the exact same problem. so i back at square one. can someone help me please? this is my room mates computer and i told him i was "fixing" it and now i feel like i've ruined it. Any help is greatly appreciated. Thank you for your time.

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  • Choosing the correct network protocol for my type of game (its Wc3 Warlock style)

    - by Moritz
    I need to code a little game for a school project. The type of the game is like the Warcraft 3 map "Warlock", if anyone doesnt know it, here is a short description: up to ten players spawn into an arena filled with lava, the goal of each player is to push the other players into the lava with spells (basically variations of missiles, aoe nukes, moba spells etc) http://www.youtube.com/watch?v=c3PoO-gcJik&feature=related we need to provide multiplayer-support over the internet, for that reason I am looking for the best network protocol for this type of game (udp, tcp, lock step, client-server...) what the requirements are: - same/stable simulation on all clients - up to ten players - up to ~100 missiles on the field - very low latency since its reaction based (i dont know the method wc3 used, but it was playable with the old servers) what would be nice (if even possible, since the traffic might be too big): - support for soft bodies over the network (with bullet physics), but this is no real requirement I read several articles about the lock step method used for RTS games, this seems to be great, but does it fit for real-time action games too (ping-related)? If anyone has run into the same problems/questions like me, I would be very happy about any help

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  • Where to ask a question about startups?

    - by Wolfpack'08
    I've got some questions about how to better run my web application development business, which has only been running for a little more than two years. It's still in its early phases, as I consider the first five years the 'early years'. Being inexperienced with business in general, I always have a lot of questions as to whether I am making the right decisions (for example, I often worry about my hiring practices, and I often worry that I may have priced new products wrongly). Is there a good site on the Stack Exchange to ask questions about things like this (for example, this site, the Project Management site, the Salesforce site, or perhaps the Personal Finance site)? I'm combing through questions and answers on each of these sites, now, and I can see questions that mimic my own. Nothing precisely the same, but things that are similar on all sites. Apart from just reading through previously asked questions, what is a good way to get a sense of whether or not my question fits on a site in the exchange? If you recommend going out of the exchange, please also let me know.

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  • Prevent Nautilus from displaying thumbnails on a specific mount

    - by Zakhar
    I have written a filesystem over Fuse to access a remote pseudo-NAS (the French "Freebox V6", I'll soon publish it as GPL3... when it's a little bit more polished!). The NAS is connected to a home ADSL, thus data comes down at the upload speed of ADSL, which is at best 1Mbps. My mount works fine (read-only at the moment), but Nautilus sees the mountpoint (and all sub-directories) as a "local" filesystem and tries to make thumbnails. As I have a directory full of images, this is quite horrible, because Nautilus then opens ALL the images to try to display the thumbnail. I could switch the Nautilus preferences to "Never" for thumbnails, but then I'll loose thumbnails on my "real" local filesystem. So the question is: with the preference "Only for local filesystem", how can I instruct Nautilus that my mountpoint is in fact NOT a local mount so that it will stop trying to draw thumbnails on that specific mount, but continue "thumbnailing" on mounts that are really local? Edit note: the same things happens if you use "standard worldwide" mounts such as sshfs, davfs,... as long as you mount over a relatively slow network (ADSL) and have images/movies on your mounted tree.

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  • Quaternions, Axis Angles and Rotation Matrices. Which of these should I use for FP Camera?

    - by Afonso Lage
    After 2 weeks of reading many math formulas and such I know what is a Quaternion, an Axis Angles and Matrices. I have made my own math libary (Java) to use on my game (LWJGL). But I'm really confused about all this. I want to have a 3D first person camera. The move (translation) is working fine but the rotation isnt working like I need. I need a camera to rotate arround world Axis and not about its own axis. But even using Quaternions, this doesnt work and no matter how much I read about Euler Angles, everybody says to me dont touch on it! This is a little piece of code that i'm using to make the rotation: Quaternion qPitch = Quaternion.createFromAxis(cameraRotate.x, 1.0f, 0.0f, 0.0f); Quaternion qYaw = Quaternion.createFromAxis(cameraRotate.y, 0.0f, 1.0f, 0.0f); this.multiplicate(qPitch.toMatrix4f().toArray()); this.multiplicate(qYaw.toMatrix4f().toArray()); Where this is a Matrix4f view matrix and cameraRotate is a Vector3f that just handle the angles to rotate obtained from mouse move. So I think I'm doing everything right: Translate the view Matrix Rotate the Move Matrix So, after reading all this, I just want to know: To obtain a correct first person camera rotate, I must need to use Quaternios to make the rotations, but how to rotate around world axis? Thanks for reading it. Best regards, Afonso Lage

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  • Open Source Highlight: namebench

    - by eddraper
    DNS is a big deal.  Even small incremental changes to improve its performance can yield significant value due to the vast quantity of look-ups required when using the internet.  Until now, It’s always been one of those things I had to kinda take on faith… was my ISP doing a good job?  Are those public DNS server really that much faster?  What about security and privacy concerns? Let me introduce you to namebench.  This is the kinda tool I really love – one that immediately delivers value and is almost over-the-top OCD in its attention to detail. Trust me, this tool is utterly ruthless in it’s quest for getting it right – you’re not left with a big question mark after it presents its data.  The results are conclusive and actionable.  Here’s what is does: It hunts down the fastest DNS servers from your desktop that it can find using thousands of requests.  No, it doesn’t pop up this little dialog in 10 seconds to give you some “off the cuff” answer from a handful of providers.  It takes the better part of 10-15 minutes to run.  When it finishes, it presents you with a veritable horn-o-plenty of data.  Mean response duration, response distribution, bad data,  no stone is left un-turned. Check it out.  You’ll dig it.

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  • Object desing problem for simple school application

    - by Aragornx
    I want to create simple school application that provides grades,notes,presence,etc. for students,teachers and parents. I'm trying to design objects for this problem and I'm little bit confused - because I'm not very experienced in class designing. Some of my present objects are : class PersonalData() { private String name; private String surename; private Calendar dateOfBirth; [...] } class Person { private PersonalData personalData; } class User extends Person { private String login; private char[] password; } class Student extends Person { private ArrayList<Counselor> counselors = new ArrayList<>(); } class Counselor extends Person { private ArrayList<Student> children = new ArrayList<>(); } class Teacher extends Person { private ArrayList<ChoolClass> schoolClasses = new ArrayList<>(); private ArrayList<Subject> subjects = new ArrayList<>(); } This is of course a general idea. But I'm sure it's not the best way. For example I want that one person could be a Teacher and also a Parent(Counselor) and present approach makes me to have two Person objects. I want that user after successful logging in get all roles that it has (Student or Teacher or (Teacher & Parent) ). I think I should make and use some interfaces but I'm not sure how to do this right. Maybe like this: interface Role { } interface TeacherRole implements Role { void addGrade( Student student, Grade grade, [...] ); } class Teacher implements TeacherRole { private Person person; [...] } class User extends Person{ ArrayList<Role> roles = new ArrayList<>(); } Please if anyone could help me to make this right or maybe just point me to some literature/article that covers practical objects design.

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