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  • Logging out

    - by chandan
    After twelve years at Sun and Oracle, and running this blog for eight years, about two hundred postings, one domain name change and getting thousands of security vulnerabilities fixed I am signing off from Oracle's product security desk today. Working for Sun and Oracle was an incredible experience! I am very fortunate to have had the opportunity to know and learn from so many extraordinary people. See chandanlog.wordpress.com for future postings. I can also be found on Linkedin

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  • LWJGL: Camera distance from image plane?

    - by Rogem
    Let me paste some code before I ask the question... public static void createWindow(int[] args) { try { Display.setFullscreen(false); DisplayMode d[] = Display.getAvailableDisplayModes(); for (int i = 0; i < d.length; i++) { if (d[i].getWidth() == args[0] && d[i].getHeight() == args[1] && d[i].getBitsPerPixel() == 32) { displayMode = d[i]; break; } } Display.setDisplayMode(displayMode); Display.create(); } catch (Exception e) { e.printStackTrace(); System.exit(0); } } public static void initGL() { GL11.glEnable(GL11.GL_TEXTURE_2D); GL11.glShadeModel(GL11.GL_SMOOTH); GL11.glClearColor(0.0f, 0.0f, 0.0f, 0.0f); GL11.glClearDepth(1.0); GL11.glEnable(GL11.GL_DEPTH_TEST); GL11.glDepthFunc(GL11.GL_LEQUAL); GL11.glMatrixMode(GL11.GL_PROJECTION); GL11.glLoadIdentity(); GLU.gluPerspective(45.0f, (float) displayMode.getWidth() / (float) displayMode.getHeight(), 0.1f, 100.0f); GL11.glMatrixMode(GL11.GL_MODELVIEW); GL11.glHint(GL11.GL_PERSPECTIVE_CORRECTION_HINT, GL11.GL_NICEST); } So, with the camera and screen setup out of the way, I can now ask the actual question: How do I know what the camera distance is from the image plane? I also would like to know what the angle between the image plane's center normal and a line drawn from the middle of one of the edges to the camera position is. This will be used to consequently draw a vector from the camera's position through the player's click-coordinates to determine the world coordinates they clicked (or could've clicked). Also, when I set the camera coordinates, do I set the coordinates of the camera or do I set the coordinates of the image plane? Thank you for your help. EDIT: So, I managed to solve how to calculate the distance of the camera... Here's the relevant code... private static float getScreenFOV(int dim) { if (dim == 0) { float dist = (float) Math.tan((Math.PI / 2 - Math.toRadians(FOV_Y))/2) * 0.5f; float FOV_X = 2 * (float) Math.atan(getScreenRatio() * 0.5f / dist); return FOV_X; } else if (dim == 1) { return FOV_Y; } return 0; } FOV_Y is the Field of View that one defines in gluPerspective (float fovy in javadoc). This seems to be (and would logically be) for the height of the screen. Now I just need to figure out how to calculate that vector.

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  • When will fglrx work on latest Xorg server 1.9?

    - by user9032
    As many laptops with an ATI Radeon (5470HD) in it, mine is having issues too when installing the proprietary driver fglrx (screen hangs on startup). I read somewhere that these issues appear because the latest fglrx driver doesn't support the latest Xorg server 1.9 yet, which is installed on Ubuntu 10.10. So my question is whether any of you know when ati will support the latest xorg server? Thanks in advance!

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  • Installing Ubuntu in EFI mode Cant go beyond GRUB Menu

    - by Vulcan
    I created a LiveUSB of Ubuntu 12.04.3 LTS using Pendrive Linux. -Created a separate 30GB partition using Windows 8 Disk Management -Disabled Secure Boot (Didn't find an option to disable EFI boot) -Disabled Fast Startup The laptop starts the GRUB menu shows up but it doesn't go beyond that no matter what option i choose. After choosing any option the screen goes blank but the power is still on i can see the power light. My laptop is HP-n012tx processor- Intel i5 4200U Video Card- 2GBnVidia 740M The GRUB menu i see http://i.stack.imgur.com/buEAn.png

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  • The Lasting Future of Search Engine Optimization

    The search engine optimization has surely a long lasting future these days. The worth of organic SEO has been increased due to its exclusive techniques involving On Page Optimization and Off Page Optimization. That is why you could find most of the lucrative SEO jobs on the internet nowadays.

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  • Adding program booting options to the OS

    - by user113948
    I am building a flight simulator box, off of Ubuntu 12.10, but I am trying to make the OS essentially invisible, I just want the machine to boot into the Flight Sim, which, that part isn't really that difficult, just a matter of adding a startup item, but I would like to make it a bit more seemless, and in-addtion to that, I would like maybe a 3-5 second countdown where you could opt-out of the flight sim from starting, if you need to troubleshoot the OS, or the flight sim itself, and I have no idea how that would be accomplished

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  • How do I generate a random curve for landscape (like Worms)? [closed]

    - by Stas
    Possible Duplicate: How do I generate terrain like that of Scorched Earth? How can I generate Worms-style terrain? I must build random curve line for the 2D Game on the BitMap (like in Worms, from the side). Teacher said that I should do it using Terrain Generation through recourcy (I work in Delphi 7). I understand the main principle, but I don't know how to introduce it as code. All measurements according to the screen resolution.

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  • I dont' know how to install?

    - by Muktar Gazaie
    I've downloaded the USB version from the web site, and the USB Installer, then I run it and it finished, but then nothing happens, I tried to go to ISO and run the setup then It finished and restarted the computer with Windows, Iv'e tried to restart it again and choose Ubuntu but it launches a black screen with some texts and nothing happens, please help me I'm very new to Ubuntu and I need to download it because my Windows is pretty awful!

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  • Economize Your Web Development Effort

    If you've locked yourself away in a dark room, subsisting on coffee and pizza while you develop the website that's going to allow your business or idea to revolutionize the world, then stop right now, open the curtains, take a break and read this. First off, it's likely that whatever your trying to design or create has already been done in one form or another - even if your application is completely unique, the vast majority of your website will still have attributes that are common to other websites.

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  • how to set up ubuntu in an empty partition i created on my laptop hd

    - by user208472
    I took 50 gigs of space and partitioned it off in windows. I then removed rights from any user with access to the computer as it is part of a domain. I'm not pc literate enough to know exactly which options to select in order to install ubuntu into the partition. I do not know which selections to make for the otions that are shown on the partition window during the installation process. If anyone could inform me how to correctly do this it would be much appreciated !

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  • Cyber Stalkers Often Escalate to Sexual Predators

    Many individuals do not take cyber stalkers seriously because they do not consider this problem to be very serious. After all what can a person do to you through words on a computer screen? Because o... [Author: Ed Opperman - Computers and Internet - June 13, 2010]

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  • Trying to find resources to learn how to test software [closed]

    - by Davek804
    First off, yes this is a general question, and I'd be perfectly happy to move this to another portion of SE, but I didn't see a more fitting sub. Basically, I am hoping a more experienced QA tester can come along and really fill in some basics for me. So far, websites seem to be sparse in terms of explaining languages involved, basic practices, etc. So, I'm sorry in advance if this is too general, but towards the end of this post I ask some specific questions if it's just absolutely unacceptable to speak in general terms. I just landed a position as Junior Systems and QA Engineer with a social media startup. Their QA and testing is almost nonexistent, so if I do a good job, I imagine I'll find a lot of bugs and have a secure role in the business. I'm pretty good with the systems aspect of my role, but I need to learn more about the QA and testing aspects. We run hardware that's touchscreen based - the user can use and interact with the devices. So, in terms of my QA role, in the short term, I need to build scripts to test the hardware/software as a 'user' to try to uncover bugs. First off, what language should these scripts be written in? Does anyone have some examples? What about the longer term 'automated testing'? I'm familiar with regression testing as the developer adds in new features, sure, but the 50,000 other types of testing, not so much. Most of our hardware runs dotnet/C# code, with some of the servers running Java - but I don't expect to need to run tests on the Java side at this point. I hope to meet with one developer today and try to get a good idea of the output from the hardware so that I can 'mock' this data that gets sent to servers, to try to bugtest. Eventually, we will be moving the hardware to be closer to where I live and work, so that I can test virtually and on real hardware. So a lot of the bugs we're dealing with now are like this: the Local Server, which kiosks report their data to gets updated from the kiosks, but the remote server does not. Or, vis versa when the user registers on a kiosk, the remote server updates but the local server does not. But yeah, without much more detail, I imagine a lot of this info isn't helpful. I've bought a book "How Google Tests Software", but it's really a book more about 'how their software testing is different from Microsoft'. It doesn't teach how to test so much as why their methods are better. Does anyone have a good book that I can buy? An ebook maybe? My local Barnes and Noble kinda had a terrible selection. I also figure a book from 2005 is not necessarily that good either.

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  • 18 SEO (Search Engine Optimization) Myths and Facts

    In this article we have discussed various myths that are there on Internet for SEO (Search Engine Optimization). As SEO is about 10 years old and there are many things that have changed or got outdated but still there are many myths which have not changed with time. So, in this article we have discussed those myths and have tried to prove them wrong with the real facts. In this article we have discussed myths related to all aspects of SEO (Search Engine Optimization) varying from on page optimization to off page optimization.

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  • 7 Ethical SEO Strategies

    Back when the concept of the internet was still new, many of its users abused it. They made millions of dollars just scamming people off their precious savings. They posted things that others have made and made themselves look legitimate.

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