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  • Problems with 3D transformation - (SharpDX)

    - by Morphex
    First of all , I have been trying to get this right for a couple of day already, I have read so much info and still fail miserably to understand this. So I am going to tell you that even though I have done fairly amount of research myself, I failed to implement it. I must say miserably I am trying to create a generic camera class for a game engine of sorts - for research purposes only - the thing is I have no idea how to go about it. I have read about quaternions and matrices, but when it comes to the actual implementation I suck at it. Sharpdx has already Matrices and QUaternions implemented. SO no big deal on the map behind it. How in the world would I go about creating a camera? I have seen so many camera examples and still can't make one that works as expected. I would like to implement diferent types too (Orbital, 6DoF, FPS). So what is need for a camera? UP, Forward and Right vectors I read they are needed, also a quaternion for rotations, and View and Projection matrices. I understand that a FPS camera for instance only rotates around the World Y and the Right Axis of the camera. the 6DoF rotates always around their own axis, and the orbital is just translating for set distance and making it look always at a fixed target point. The concepts are there, now implementing this is not trivial for me. Can anyone point me on what am I missing, what I got wrong? I would really enjoy if you could give a tutorial, some piece of code, or just plain explanation of the concepts. Thank you for readin, a frustrated coder.

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  • Fill rows down quickly (column or matrix of zeros)

    - by Mark Miller
    I have an extremely basic question, but I have never found the answer by searching the internet. I simply want to create a large column of zeros with Excel. Sometimes I want to create a huge matrix of zeros (maybe 600 rows by 500 columns) and then replace a few zeros with 1's to create a model design matrix. I have always started by creating a column of, for example, 10 zeros, copying and pasting those zeroes, then copying and pasting the resulting column of 20 zeros, etc., until I had the desired number of rows. Then I would copy and paste that column of zeros one at a time over and over until I had the desired number of columns. This procedure is tedious and time-consuming and I know there must be an easier way. Do you know of any other methods?

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  • Turning a running Linux system into a KVM instance on another machine

    - by Charles
    I have two physical machines that I wish to virtualize. I can not (physically) plug the hard drives from either machine into the new machine that will act as their VM host, so I think that copying the entire structure of the system over using dd is out of the question. How can I best go about migrating these machines from their hardware to the KVM environment? I've set up empty, unformatted LVM logical volumes to host their filesystems, with the understanding that giving the VMs a real partition to work with achieves higher performance than sticking an image on the filesystem. Would I be better off creating new OS installs and rsyncing the differences over? FWIW, the two machines to be VM'd are running CentOS 5, and the host machine is running Ubuntu Server 10.04 for no particularly important reason. I doubt this matters too much, as it's still going to be KVM and libvert that matter.

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  • Using mod_rewrite for a Virtual Filesystem vs. Real Filesystem

    - by philtune
    I started working in a department that uses a CMS in which the entire "filesystem" is like this: create a named file or folder - this file is given a unique node (ex. 2345) as well as a default "filename" (ex. /WelcomeToOurProductsPage) and apply a template assign one or more aliases to the file for a URL redirect (ex. /home-page-products - can also be accessed by /home-page-products.aspx) A new Rewrite command is written on the .htaccess file for each and every alias Server accesses either /WelcomeToOurProductsPage or /home-page-products and redirects to something like /template.aspx?tmp=2&node=2345 (here I'm guessing what it does - I only have front-end access for now - but I have enough clues to strongly assume) Node 2345 grabs content stored in a SQL Db and applies it to the template. Note: There are no actual files being created on the filesystem. It's entirely virtual. This is probably a very common thing, but since I have never run across this kind of system before two months ago, I wanted to explain it in case it isn't common. I'm not a fan at all of ASP or closed-sourced systems, so it may be that this is common practice for ASP developers. My question, that has taken far too long to ask, is: what are the benefits of this kind of system, as opposed to creating an actual file hierarchy? Are there any drawbacks to having every single file server call redirected? To having the .htaccess file hold rewrite rules for every single alias?

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  • Unattended installation for windows 7 x86

    - by user448402
    Are there any pre-created Autounattend.xml files for Windows 7 unattended installation x86? I have been experimenting and creating the XML file but I am always being prompted to choose which hard disk to format. I can't seem to add in the script to automate that process. I tried adding the DiskConfiguration portion but the installation keeps giving me error that my diskID is incorrect. How do I resolve this issue? Is there any pre-created Autounattend.xml file that automates everything? I want it to work for VMware virtual machine. Currently, VMware creates its own default disk. So RT Seven Lite only works for normal computer and not VMware.

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  • Domain in a hosted environment

    - by cpgascho
    We have an application we host in a third party data center for our clients. We have multiple clients running the same application on several racks of servers. Most of our clients require that our servers be SAS70 compliant. Currently each server has it's own set of users and security settings that need to be configured. We are creating scripts to do this, but what would be the risks/advantages of joining all the servers to the domain for User Management and Group policy for enforcing security settings? The rational of some is that if the DC is hacked the whole network would be compromised where as if one stand alone hosted server is hacked everything else should be safe.

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  • Files with illegal filenames [closed]

    - by Josh
    Possible Duplicate: How to force Windows XP to rename a file with a special character? I have a few files whose names have characters such as "?" and ":" that are forbidden by windows. I'm not sure how they managed to get there with these names, since I can't manually create files with these names. They're recovered from an HFS drive, but the tool that recovered them was running under windows and so should have been subject to the same restrictions while creating them, I would think. Anyway... now that they're here, I can open them, but I can't move, copy, rename, or delete them. I want to delete a few of them, but most I want to save and copy to another drive. How might I go about this?

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  • Is "If a method is re-used without changes, put the method in a base class, else create an interface" a good rule-of-thumb?

    - by exizt
    A colleague of mine came up with a rule-of-thumb for choosing between creating a base class or an interface. He says: Imagine every new method that you are about to implement. For each of them, consider this: will this method be implemented by more than one class in exactly this form, without any change? If the answer is "yes", create a base class. In every other situation, create an interface. For example: Consider the classes cat and dog, which extend the class mammal and have a single method pet(). We then add the class alligator, which doesn't extend anything and has a single method slither(). Now, we want to add an eat() method to all of them. If the implementation of eat() method will be exactly the same for cat, dog and alligator, we should create a base class (let's say, animal), which implements this method. However, if it's implementation in alligator differs in the slightest way, we should create an IEat interface and make mammal and alligator implement it. He insists that this method covers all cases, but it seems like over-simplification to me. Is it worth following this rule-of-thumb?

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  • How to achieve in-folder discussions with IMAP (skip SMTP send, Thunderbird)?

    - by lkraav
    Does anyone know a good way to achieve replying to a message into the same IMAP folder without sending another duplicate copy over SMTP? This is to be achieved with a conventional GUI mail client, especially Thunderbird. Goal is to have an in-folder conversation. This is possible with shared IMAP folders, with per-user Seen indices, where subscribed recipients are guaranteed to see the new messages without them arriving from internet. Thunderbird is capable of storing a copy of a reply in the same folder as original message (Account Options), which is half way there. Just pressing Save sends the message into Drafts and that is probably an even bigger patch to try to put a "draft message" into the same folder as original. All options, client, server or logic-wise are an acceptable answer, including programming i.e. patching/creating add-on for Thunderbird.

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  • Easiest (free) way to get VM hosting Windows OS, on Windows 7 Ultimate 64bit

    - by John
    I'm a software developer and my workstation is running Win7 Ultimate, 64bit. I want to run a virtual PC on which I can deploy and run the web-software I create, as a virtual web-server PC. I want the VM to also be Windows as that's what I know, the version isn't too important but on that PC I want to run things like MySQL, TomCat, etc. I see VMWare make 'Player', also I see VirtualBox and I know MS also have solutions too, which I've heard good things about. Does it make much difference which I use as far as creating & using VMs? Or are they all pretty similar?

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  • Moving the home directory to a new drive

    - by Mellowcandle
    I have no more space left on my hard-drive. So I bought a new one and I would like this hard-drive to be the home folder. I thought of copying all the stuff I have on the home folder to the hard-drive partition. and creating a symbolic-link from ~ to there. The problem I have is that I can't really delete the home folder while I'm logged in as the current user. Is there a way to log out, and log in as root in Linux Mint? I want to be able to do this without a live-CD solution.

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  • model association or controller?

    - by andybritton
    I'm trying to create a rails app that allows users to submit information about their pets. I've come to a point where my knowledge is limited and I don't know enough about what/how this could be done so I'm hoping this will be relatively easy to answer. At the moment I have a model called Pet, this model currently stores basic information like name, picture etc but it also holds more specific data like type, breed, date of birth etc. What I would like to be able to do is create a page that can match various records without having to be manually categorized if that makes sense so a users pet could be matched to other pets with the same breed, age etc. I've read about nested models as I understand this information could be submitted to 2 models in one form but I am not sure whether this could be done directly in a separate controller which would only be visible to users with pets in these matched "groups" if that makes sense. So in essence is it best practice to use 1 table to store all the information and just use a controller to match pets based on rows having the same values or would it be far simpler to have a form with a nested model and link 2 tables together? The main feature needs to be matching without a user having to create a group or categorize pets so the second model would need to add id's to an array instead of just creating more and more rows.

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  • What can I do in order to inform users of potential errors in my software in order to minimize liability?

    - by phobitor
    I'm an independent software developer that's spent the last few months creating software for viewing and searching map data. The software has some navigation functionality as well (mapping, directions,etc). The eventual goal is to sell it in mobile app markets. I use OpenStreetMap as my data source. I'm concerned about liability for erroneous map data / routing instructions, etc that might result when someone uses the application. There are a lot of stories on the internet where someone gets into an accident or gets stuck or gets lost because of their GPS unit/Google Maps/mapping app... I myself have come across incorrect map data as well in a GPS unit I have in my car. While I try to make my own software as bug free as possible, no software is truly bug free. And moving beyond what I can control, OpenStreetMap data (and street map data in general) is prone to errors as well. What steps can I take to clearly inform the user that results from the software aren't always perfect, and to minimize my liability?

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  • My proposed design is usually worse than my colleague's - how do I get better?

    - by user151193
    I have been programming for couple of years and am generally good when it comes to fixing problems and creating small-to-medium scripts, however, I'm generally not good at designing large scale programs in object oriented way. Few questions Recently, a colleague who has same number of years of experience as me and I were working on a problem. I was working on a problem longer than him, however, he came up with a better solution and in the end we're going to use his design. This really affected me. I admit his design is better, but I wanted to come up with a design as good as his. I'm even contemplating quitting the job. Not sure why but suddenly I feel under some pressure e.g. what would juniors think of me and etc? Is it normal? Or I'm thinking a little too much into this? My job involves programming in Python. I try to read source code but how do you think I can improve me design skills? Are there any good books or software that I should study? Please enlighten me. I will really appreciate your help.

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  • Tool for monitoring windows processes and folders

    - by Stoimen
    I am looking for a tool that tracks and keeps information for some processes on windows how long they've been running, when they have had started/closed. Also it would be nice to monitor folders if some data have been added/deleted to them. This is basically what I need. I tried Process Monitor but it gave me too much information. Just for creating a new folder it lists tons of useless information. I just need the time of creation... I tried and Process Explorer but it doesn't fit my needs either because it shows only the current state of my PC but I need to run some processes for couple of hours and after that to check what went wrong but unfortunately no records are saved.

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  • Are these 2 strings equal?

    - by Shawn Cicoria
    I spent way too many hours on this one. I was going through full configuration of ADFS v2 with WCF active client scenarios and using self generated certificates, had all things lined up perfectly.  Using the certificate snap in I just copied the thumbprint into the IdentityModel section (trusted issuers) in my service config.  var one = "?ecb8fd950978d94ae21d4f073227fdc2718bdb96"; var two = "ecb8fd950978d94ae21d4f073227fdc2718bdb96"; What ended up is in the first, there’s a buried nonprintable series of characters (‎ – or E2 80 8E in 0x format). 2 lessons, turn on tracing sooner and don’t trust Copy & Paste – all the time.  I ended up creating a quick Issuer Name Registry class so I could debug and finally saw the issue. namespace MyService { public class IssuerValidator : ConfigurationBasedIssuerNameRegistry { public IssuerValidator() :base() { } public IssuerValidator(XmlNodeList xml) : base(xml) { } public override string GetIssuerName(System.IdentityModel.Tokens.SecurityToken securityToken) { X509SecurityToken token = securityToken as X509SecurityToken; if (token == null) { return "who cares"; } else { return token.Certificate.Thumbprint; } } } I do have a utility I wrote to navigate the cert store and emit the thumbprint to avoid these issues, I just didn’t have it available on my machine at the time.

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  • Problems with Finder background images produced in Mac OS X 10.6?

    - by Joe
    Morning all. I'm creating DMG installers with background pictures. My build machine is 10.6. I'm having problems getting them working consistently: If I create one on 10.4 it works fine in 10.5, 10.5 and 10.6, If I create one for 10.5 it works fine in 10.4, 10.5 and 10.6, But if I create one in 10.6, the background picture shows in 10.6 but does not show in 10.4 or 10.5. I think I recall having seen similar reports in one or two places but there's not much information on the web. Has anyone here come across this problem? Is it recognised? Fixable? Unfortunately I have no option of running 10.5 on my build machine... Thanks! Update: This is a confirmed known bug in 10.6 . I will update this if there is any extra news.

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  • C++ Parallel Asynchonous task

    - by Doodlemeat
    I am currently building a randomly generated terrain game where terrain is created automatically around the player. I am experiencing lag when the generated process is active, as I am running quite heavy tasks with post-processing and creating physics bodies. Then I came to mind using a parallel asynchronous task to do the post-processing for me. But I have no idea how I am going to do that. I have searched for C++ std::async but I believe that is not what I want. In the examples I found, a task returned something. I want the task to change objects in the main program. This is what I want: // Main program // Chunks that needs to be processed. // NOTE! These chunks are already generated, but need post-processing only! std::vector<Chunk*> unprocessedChunks; And then my task could look something like this, running like a loop constantly checking if there is chunks to process. // Asynced task if(unprocessedChunks.size() > 0) { processChunk(unprocessedChunks.pop()); } I know it's not far from easy as I wrote it, but it would be a huge help for me if you could push me at the right direction. In Java, I could type something like this: asynced_task = startAsyncTask(new PostProcessTask()); And that task would run until I do this: asynced_task.cancel();

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  • Need ability to set configuration options using single method which will work across multiple server configurations.

    - by JMC Creative
    I'm trying to set post_max_size and upload_max_filesize in a specific directory for a web application I'm building. I've tried the following in a .htaccess file in the script directory. (upload.php is the script that needs the special configuration) <Files upload.php> php_value upload_max_filesize 9998M php_value post_max_size 9999M </Files> That doesn't work at all. I've tried it without the scriptname specificity, where the only thing in the .htaccess file is: php_value upload_max_filesize 9998M php_value post_max_size 9999M This works on my pc-based xampp server, but throws a "500 Misconfiguration Error" on my production server. I've tried also creating a php.ini file in the directory with: post_max_size = 9999M upload_max_filesize = 9998M But this also doesn't always work. And lastly using the following in the php script doesn't work either, supposedly because the settings have already been compiled by the time the parser reaches the line (?): <?php ini_set('post_max_size','9999M'); ini_set('upload_max_filesize','9998M'); ?>

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  • Create a Texture2D from larger image

    - by Dialock
    I am having trouble with the basic logic of this solution: Xna: Splitting one large texture into an array of smaller textures in respect to my specific problem (specifically, I'm looking at the second answer.) How can I use my source rectangle that I already use for drawing to create a new Texture2D? spriteBatch.Draw(CurrentMap.CollisionSet, currentMap.CellScreenRectangle(x, y), CurrentMap.TileSourceRectangle(currentMap.MapCells[x, y].TileDepths[4]), Color.FromNonPremultiplied(0,0,0, 45), 0.0f, Vector2.Zero, SpriteEffects.None, 0.91f); I know I want a method that I started so: //In Update Method of say the player's character. Texture2D CollisionTexture = ExtractTexture(MapManager.CurrentMap.CollisionSet, MapManager.TileWidth, MapManager.TileHeight); // In MapManager Class who knows everything about tiles that make up a level. public Texture2D ExtractTexture(Texture2D original, int partWidth, int partheight, MapTile mapCell) { var dataPerPart = partWidth * partheight; Color[] originalPixelData = new Color[original.Width * original.Height]; original.GetData<Color>(originalPixelData); Color[] newTextureData = new Color[dataPerPart]; original.GetData<Color>(0, CurrentMap.TileSourceRectangle(mapCell.TileDepths[4]), originalPixelData, 0, originalPixelData.Count()); Texture2D outTexture = new Texture2D(original.GraphicsDevice, partWidth, partheight); } I think the problem is I'm just not understanding the overload of Texture2D.GetData< Part of my concern is creating an array of the whole texture in the first place. Can I target the original texture and create an array of colors for copying based on what I already get from the method TileSourceRecatangle(int)?

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  • PDF to Image Conversion in Java

    - by Geertjan
    In the past, I created a NetBeans plugin for loading images as slides into NetBeans IDE. That means you had to manually create an image from each slide first. So, this time, I took it a step further. You can choose a PDF file, which is then automatically converted to an image for each page, each of which is presented as a node that can be clicked to open the slide in the main window. As you can see, the remaining problem is font rendering. Currently I'm using PDFBox. Any alternatives that render font better? This is the createKeys method of the child factory, ideally it would be replaced by code from some other library that handles font rendering better: @Override protected boolean createKeys(List<ImageObject> list) { mylist = new ArrayList<ImageObject>(); try { if (file != null) { ProgressHandle handle = ProgressHandleFactory.createHandle( "Creating images from " + file.getPath()); handle.start(); PDDocument document = PDDocument.load(file); List<PDPage> pages = document.getDocumentCatalog().getAllPages(); for (int i = 0; i < pages.size(); i++) { PDPage pDPage = pages.get(i); mylist.add(new ImageObject(pDPage.convertToImage(), i)); } handle.finish(); } list.addAll(mylist); } catch (IOException ex) { Exceptions.printStackTrace(ex); } return true; } The import statements from PDFBox are as follows: import org.apache.pdfbox.pdmodel.PDDocument; import org.apache.pdfbox.pdmodel.PDPage;

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  • Release Notes for 3/8/2012

    Here are the notes for today’s release: Clarified the purpose of the fork name when creating a fork of a project. Added confirmation messages to deletion of system requirements when editing documentation. Deployed several bug fixes: Fixed an issue that was causing AppHarbor build notifications to fail. Thanks to claq2 for the bug report! Fixed several issues where extremely long titles or descriptions on items on the issues, discussions, profiles, and home pages would not wrap properly. Fixed a minor wrapping issue around the link to upload patches. Fixed an issue with viewing RSS feeds in Internet Explorer. Fixed an issue where replying to a discussion with a quote would push the content past the page margins. Have ideas on how to improve CodePlex? Visit our ideas page! Vote for your favorite ideas or submit a new one. Got Twitter? Follow us and keep apprised of the latest releases and service status at @codeplex.

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  • Missing Font on Page in Firefox, Worked before and Still Works Now in Other Browsers

    - by Keavon
    On any new Steam profile, there are many parts of the page (such as the username) that is supposed to be following this font hierarchy: 'Motiva Sans Thin',Arial,Helvetica,Verdana,sans-serif However, Motiva Sans Thin is not showing in Firefox anymore. It used to several days earlier, but now it reverts to Arial. Chrome, the Steam client, and other browsers still display Motiva Sans Thin, which leads me to believe it's still in my system's fonts, or still being provided as a web font. I have tried creating a new Firefox profile to no avail. It's been doing this for about two weeks now. Why is Firefox no longer displaying the font when it used to, and other browsers still do? How can I fix this? Thanks.

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  • How do you create a report in Word (or other documentation software) that is linked directly with Ex

    - by NoCatharsis
    I believe my question may be best answered by using Access since that's more what it's made for. However, I don't have a license for Access here at work and trying to get one is pulling teeth. So I'm curious if there is any way to compile reports with data in an Excel 2007 sheet. The output can be .doc, .docx, .pdf - or anything else if there's a decent piece of free 3rd party software. This might be easiest solved by just creating another sheet in the same workbook and directly linking to the data I want to display in a report-esque format. But I wanted to see if SU could offer some more creative solutions.

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  • The authenticity of host “host” can't be established

    - by Candroid
    I'm running a web app on a Linux server which connects to other servers. When I run the project on my Play framework on loclhost it runs fluently. When I run it on my Linux server I get the above message 3 times, one for each server. I read a post about it where it says that it is a man in the middle warning and if I write yes it should work. But though a write yes, nothing happens and the app doesn't run, and the error message keeps popping up. I tried creating private and public keys and add them to the authorized_keys file, but it didn't work either. What should I so to run my app?

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