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  • Which algorithms/data structures should I "recognize" and know by name?

    - by Earlz
    I'd like to consider myself a fairly experienced programmer. I've been programming for over 5 years now. My weak point though is terminology. I'm self-taught, so while I know how to program, I don't know some of the more formal aspects of computer science. So, what are practical algorithms/data structures that I could recognize and know by name? Note, I'm not asking for a book recommendation about implementing algorithms. I don't care about implementing them, I just want to be able to recognize when an algorithm/data structure would be a good solution to a problem. I'm asking more for a list of algorithms/data structures that I should "recognize". For instance, I know the solution to a problem like this: You manage a set of lockers labeled 0-999. People come to you to rent the locker and then come back to return the locker key. How would you build a piece of software to manage knowing which lockers are free and which are in used? The solution, would be a queue or stack. What I'm looking for are things like "in what situation should a B-Tree be used -- What search algorithm should be used here" etc. And maybe a quick introduction of how the more complex(but commonly used) data structures/algorithms work. I tried looking at Wikipedia's list of data structures and algorithms but I think that's a bit overkill. So I'm looking more for what are the essential things I should recognize?

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  • Cisco ASA - VPN and Hairpinning....

    - by Nordberg
    Hi, We have 2 sites that will be linked by a IPSEC VPN between 2 Cisco ASAs: Site 1 8Mb ADSL Connection Cisco ASA 505 Site 2 2Mb SDSL Connection Cisco ASA 505 Basically, both sites need access to a service at the end of another IPSEC VPN, Site 3, which I plan to terminate at Site 2. This is due to the way the service is sold - it's billed per gateway. So if both Site 1 and Site 2 had their own VPN connection to Site 3, it would cost us twice as much... Anyway, my idea is to have all traffic from Site 1 destined for Site 3 to go via the VPN between Site 1 and Site 2. The end result being all traffic that hits Site 3 has come via Site 2. I understand this is known as hairpinning but I'm struggling to find a great deal of information on how this is setup. So, firstly, can anyone confirm that what I'm trying to achieve is possible and, secondly, can anyone point me in the direction of an example of such a configuration? Many Thanks.

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  • SQL SERVER – Technical Reference Guides for Designing Mission-Critical Solutions – A Must Read

    - by pinaldave
    Yesterday I was reading architecture reference material helping my friend who was looking for material in this respect. While working together we were searching twitter, facebook and search engines to find relevant material.While searching online we end up on very interactive reference point. Once I send the same to him, he replied he may not need anything more after referencing this material. The best part of this article was it gives access to various aspect of the technology of the image map. Here is the abstract of the original article from the site: The Technical Reference Guides for Designing Mission-Critical Solutions provide planning and architecture guidance for various mission-critical workloads deployed by users. These guides reflect the knowledge gained by Microsoft while working with customers on mission-critical deployments. Each guide provides not only the key technical concepts and information helpful for design, but also “lessons learned,” best practices, and references to customer case studies. Once you click on any of the desired topic, you will see further detailed image map of the selected topic. Personally once I ended up on this site, I was there for more than 2 hours clicking through various links. Click on image to see larger image Read more here: Technical Reference Guides for Designing Mission-Critical Solutions Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQL White Papers, T SQL, Technology

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  • CodePlex Daily Summary for Thursday, October 04, 2012

    CodePlex Daily Summary for Thursday, October 04, 2012Popular ReleasesMCEBuddy 2.x: MCEBuddy 2.3.1: 2.3.1All new Remote Client Server architecture. Reccomended Download. The Remote Client Installation is OPTIONAL, you can extract the files from the zip archive into a local folder and run MCEBuddy.GUI directly. 2.2.15 was the last standalone release. Changelog for 2.3.1 (32bit and 64bit) 1. All remote MCEBuddy Client Server architecture (GUI runs remotely/independently from engine now) 2. Fixed bug in Audio Offset 3. Added support for remote MediaInfo (right click on file in queue to get ...Multiwfn: Multiwfn 2.5.2: Multiwfn 2.5.2D3 Loot Tracker: 1.5: Support for session upload to website. Support for theme change through general settings. Time played counter will now also display a count for days. Tome of secrets are no longer logged as items.patterns & practices - Develop Windows Store apps using C++ & XAML: Hilo: Hilo C++ October 4, 2012 Drop: This drop supports Windows 8 RTM (Build 9200). To view the documentation, right-click the m_hilo.chm file on disk, select Properties, then on the General tab, select Unblock. The .chm will now display the content.xUnit.net Contrib: xunitcontrib-resharper for 7.1 EAP (build 3): xunitcontrib release 0.6.1 (ReSharper runner) This release provides a test runner plugin for Resharper 7.1 EAP build 3, targetting all versions of xUnit.net. (See the xUnit.net project to download xUnit.net itself.) For ReSharper 7.0 and 6.1.1, see this release. For older versions, see this release. Also note that all builds work against ALL VERSIONS of xunit. The files are compiled against xunit.dll 1.9.1 - DO NOT REPLACE THIS FILE. Thanks to xunit's version independent runner system, this...SharePoint Column & View Permission: SharePoint Column and View Permission v1.5: Version 1.5 of this project. If you will find any bugs please let me know at enti@zoznam.sk or post your findings in Issue TrackerZ3: Z3 4.1.1 source code: Snapshot corresponding to version 4.1.1.DirectX Tool Kit: October 2012: October 2, 2012 Added ScreenGrab module Added CreateGeoSphere for drawing a geodesic sphere Put DDSTextureLoader and WICTextureLoader into the DirectX C++ namespace Renamed project files for better naming consistency Updated WICTextureLoader for Windows 8 96bpp floating-point formats Win32 desktop projects updated to use Windows Vista (0x0600) rather than Windows 7 (0x0601) APIs Tweaked SpriteBatch.cpp to workaround ARM NEON compiler codegen bugHome Access Plus+: v8.1: HAP+ Web v8.1.1003.000079318 Fixed: Issue with the Help Desk and updating a ticket as an admin 79319 Fixed: formatting issue with the booking system admin header 79321 Moved to using the arrow with a circle symbol on the homepage instead of the > and < 79541 Added: 480px wide mobile theme to login page 79541 Added: 480px wide mobile theme to home page 79541 Added: slide events for homepage 79553 Fixed: Booking System Multiple Lesson Bug 79553 Fixed: IE Error Message 79684 Fixed: jQuery issue ...System.Net.FtpClient: System.Net.FtpClient 2012.10.02.01: This is the first release of the new code base. It is not compatible with the old API, I repeat it is not a drop in update for projects currently using System.Net.FtpClient. New users should download this release. The old code base (Branch: System.Net.FtpClient_1) will continue to be supported while the new code matures. This release is a complete re-write of System.Net.FtpClient. The API and code are simpler than ever before. There are some new features included as well as an attempt at be...CRM 2011 Visual Ribbon Editor: Visual Ribbon Editor (1.3.1002.3): Visual Ribbon Editor 1.3.1002.3 What's New: Multi-language support for Labels/Tooltips for custom buttons and groups Support for base language other than English (1033) Connect dialog will not require organization name for ADFS / IFD connections Automatic creation of missing labels for all provisioned languages Minor connection issues fixed Notes: Before saving the ribbon to CRM server, editor will check Ribbon XML for any missing <Title> elements inside existing <LocLabel> elements...RenameApp: RenameApp 1.0: First release of RenameAppJsonToStaticTypeGenerator: JsonToStaticTypeGenerator 0.1: This is the first alpha release of JsonToStaticTypeGenerator.XiaoKyun: XiaoKyun V1.00: https://xiaokyun.codeplex.com/CatchThatException: Release 1.12: Wow a very fast change and a much better and faster writing to the text fileNaked Objects: Naked Objects Release 5.0.0: Corresponds to the packaged version 5.0.0 available via NuGet. Please note that the easiest way to install and run the Naked Objects Framework is via the NuGet package manager: just search the Official NuGet Package Source for 'nakedobjects'. It is only necessary to download the source code (from here) if you wish to modify or re-build the framework yourself. If you do wish to re-build the framework, consul the file HowToBuild.txt in the release. Major enhancementsNaked Objects 5.0 is desi...WinRT XAML Toolkit: WinRT XAML Toolkit - 1.3.0: WinRT XAML Toolkit based on the Windows 8 RTM SDK. Download the latest source from the SOURCE CODE page. For compiled version use NuGet. You can add it to your project in Visual Studio by going to View/Other Windows/Package Manager Console and entering: PM> Install-Package winrtxamltoolkit Features AsyncUI extensions Controls and control extensions Converters Debugging helpers Imaging IO helpers VisualTree helpers Samples Recent changes NOTE: Namespace changes DebugConsol...SubExtractor: Release 1029: Feature: Added option to make i and ¡ characters movie-specific for improved OCR on Spanish subs (Special Characters tab in Options) Feature: Allow switch to Word Spacing dialog directly from Spell Check dialog Fix: Added more default word spacings for accented characters Fix: Changed Word Spacing dialog to show all OCR'd characters in current sub Fix: Removed application focus grab during OCR Fix: Tightened HD subs fuzzy logic to reduce false matches in small characters Fix: Improved Arrow k...Readable Passphrase Generator: KeePass Plugin 0.7.1: See the KeePass Plugin Step By Step Guide for instructions on how to install the plugin. Changes Built against KeePass 2.20Windows 8 Toolkit - Charts and More: Beta 1.0: The First Compiled Version of my LibraryNew Projects<-Zielonka.co.uk Open source libraries. Extension methods, Enums and utilities.: The following code libraries are provided to the opensource communities to help developers with common simple tasks.Affine cipher school project: Affine cipher crypt with block = 10Agendamento_Recursos: Projeto agendamento de recursos áudio visuais.ASP.NET Desktop Membership Manager Application: This project aims to make it possible to manage ASP.Net Membership within the initial life cycle stages of your web application.ASP.Net MVC Starter Architecture: A sample ASP.Net MVC application that introduces concepts around dependency injection, interface interception, repositories, and other architectural patterns.Cet MicroWorkflow: Create your own automation on Netduino in a visual way.Custom WCF Context State Pattern Implementation (example): The WcfContext project is the class library and a training project of using WCF context like we used to use the HttpContext.Current.Dash-R: dash-r (-r) is a shim for allowing use of Mercurial-style local version numbers in Git.DoombringerStudios: VideogameEI1025: Usar GLUT para desarrollar aplicaciones que usen OpenGL sobre C++ExperimentosPascal: Programitas de ejemplo para mostrar la sintaxis de Pascal.Lyricsgrabber: A Tool to get automatically lyrics to provided songs and save them in their tags.Mediafire .Net Api: This project provides an easy to use lib to work with Mediafire's REST Api for .Net developers.NDownloader C# .NET 4.5 VS2012: Windows console based downloader for files. Useful for downloading freely available pdf files such as public domain books or mp3 media from the internet.Orchid Scene Editor: This project is a generic 3D editor.PdfReport: PdfReport is a code first reporting engine, which is built on top of the iTextSharp and EPPlus libraries.PowerShell Security: PoshSec is short for PowerShell security, a module provided to allow PowerShell users testing, analysis and reporting on Window securityR to CLR: Accessing a common language runtime (.NET or Mono) from the R statistical software.RMDdownloader: RMDdownloader is a tiny application designed to locate and download the the desktops submitted by the http://ratemydesktop.org userbase. Sample Sample Code: sample sample codeScreen Ruler: Simple ruler displayed on screenSharePoint Web Change Log: An alternate notification feature for SharePoint. It's working on Web basis.SimpleMin: SimpleMin is a very easy way to minify and bundle all js/css files in your web project.Sitecore Courier: Sitecore Courier aims to fill the gap between the development and production environments when building websites with Sitecore CMS. It lets you build SitecoreSql Migrations: Sql Migrations is a database migration framework for .NET.StripeOne Beauty Salon: Projeto que visa criar uma aplicação para salões de belezaStripeOne Blog: Esse projeto tem como objetivo criar um sistema para gerenciamento de blogs no estilo Wordpress.StripeOne Core: Projeto com métodos para facilitar a vida do programador.Testability analysis: Heuristics for testability of classes.This is the future: ;-)Viva Music Player: Viva Music Player is a free and open source music player. It's using C# and NAudio audio library to play audio files.Wedding Calculator: Services for wedding portal (under construction)Whitepad: Whitepad is a digital whiteboard with an infinite canvas.Win8SSH: This project will provide a ModernUI SSH-Client for Windows 8

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  • Linux Bluetooth [closed]

    - by Chris
    Not sure if this is the proper forum; please forgive me if it's not... I have a Lenovo S10 'netbook' that I've installed Fedora 17 ("LXDE spin") on. So far pretty much everything works great, except, the on-board Bluetooth. lsusb shows the controller present (0a5c:2101 Broadcom Corp. Bluetooth Controller), hcitool dev shows hci0 present, but when I put my mouse ("Lenovo Bluetooth Laser Mouse," which works perfectly paired with a MacBook Pro, MacBook Air, Mac mini, and Lenovo SL500 (with a USB dongle; running Windows 7)) into pairing mode and run either hcitool scan (reports "Scanning ..." and, without further information or error message, returns to the shell prompt) or bluetooth-wizard (from the gnome-bluetooth package) and try to detect the mouse, I get nothing... Frustrating! Thanks anyone who can point me in the right direction!

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  • Learning to code first game, few questions on basic game development and 3D

    - by ProgrammerByDay
    I've been programming for a while, and I'm concurrently learning how to make a basic game and slimdx, and wanted to talk to someone to hopefully get a few pointers. I've read that Tetris is the "Hello, world" of game programming, which made sense to me, so I decided to give it a shot. I've been able to code up a basic version in a few hours, which I'm quite happy with, but I had a few questions about 3D programming. Right now I'm using Direct3D to do display the blocks without any textures (just colored squares). I have a data structure (2d array of bytes, where each byte denotes the presence of a block and its color) which is the "game board," and on every render() call I create a new vertex buffer of the existing squares in the game board, and draw those primitives. This feels very inefficient, and I wondering what would be the idiomatic way of doing this in a 3D world, with matrix/rotations/translation operations. I know 3D is overkill for such a project, but I want to learn any 3d concepts that I can while I'm doing it. I understand that what you'd usually want to do is keep the same vertices/vertex buffers but manipulate them with matrices to achieve rotations/translations, etc. To do so, I assume what would happen is I'd have one vertex buffer for the "active" piece, since that'll be constantly rotated and moved, and have one vertex buffer for the frozen pieces on the bottom of the board, which is pretty much stationary, but will need to be changed/recreated when the active piece becomes frozen. Right now I'm just clearing and redrawing on every render call, which seems like the easiest way to do things, although I wonder if there's a more efficient way to deal with changes. Obviously there are a lot of questions I'm asking here, but if you can even just point me a step or two ahead in terms of how I should be thinking, it'd be great. Thanks

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  • How to host customer developed code server side

    - by user963263
    I'm developing a multi-tenant web application, most likely using ASP.NET MVC5 and Web API. I have used business applications in the past where it was possible to upload custom DLL's or paste in custom code to a GUI to have custom functions run server side. These applications were self hosted and single-tenant though so the customer developed bits didn't impact other clients. I want to host the multi-tenant web application myself and allow customers to upload custom code that will run server side. This could be for things like custom web services that client side JavaScript could interact with, or it could be for automation steps that they want triggered server side asynchronously when a user takes a particular action. Additionally, I want to expose an API that allows customers' code to interact with data specific to the web application itself. Client code may need to be "wrapped" so that it has access to appropriate references - to our custom API and maybe to a white list of approved libraries. There are several issues to consider - security, performance (infinite loops, otherwise poorly written code, load balancing, etc.), receive compiled DLL's or require raw code, etc. Is there an established pattern for this sort of thing or a sample project anyone can point to? Or any general recommendations?

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  • SQL SERVER – Copy Database – SQL in Sixty Seconds #067

    - by Pinal Dave
    There are multiple reasons why a user may want to make a copy of the database. Sometimes a user wants to copy the database to the same server and sometime wants to copy the database on a different server. The important point is that DBA and Developer may want copies of their database for various purposes. I copy my database for backup purpose. However, when we hear coping database – the very first thought which comes to our mind is – Backup and Restore or Attach and Detach. Both of these processes have their own advantage and disadvantages. The matter of the fact, those methods is much efficient and recommended methods. However, if you just want to copy your database as it is and do not want to go for advanced feature. You can just use the copy feature of the SQL Server. Here are the settings, which you can use to copy the database. SQL in Sixty Seconds Video I have attempted to explain the same subject in simple words over in following video. Action Item Here are the blog posts I have previously written on the subject of SA password. You can read it over here: Copy Database from Instance to Another Instance – Copy Paste in SQL Server Copy Database With Data – Generate T-SQL For Inserting Data From One Table to Another Table Copy Data from One Table to Another Table – SQL in Sixty Seconds #031 – Video Generate Script for Schema and Data – SQL in Sixty Seconds #021 – Video You can subscribe to my YouTube Channel for frequent updates. Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: Joes 2 Pros, PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, SQLAuthority Book Review, SQLAuthority News, T SQL, Video

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  • size of extent on LVM2

    - by piotrek
    in LVM1 there was a limit of 65k extends. So size of extent had to been chosen carefully between wasted space on partitions (to big extent) and maximal possible size of logical volume (too small extent). in lvm2 (according to http://docstore.mik.ua/manuals/hp-ux/en/5992-4589/apa.html) the limit is ~16 million extents. so the default size of 4mb gives ~60TB of LV size. so is there any point in making the extent larger than 4-16mb on a desktop? is there any performance degradation or other costs of having big number of extents?

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  • White Paper on Analysis Services Tabular Large-scale Solution #ssas #tabular

    - by Marco Russo (SQLBI)
    Since the first beta of Analysis Services 2012, I worked with many companies designing and implementing solutions based on Analysis Services Tabular. I am glad that Microsoft published a white paper about a case-study using one of these scenarios: An Analysis Services Case Study: Using Tabular Models in a Large-scale Commercial Solution. Alberto Ferrari is the author of the white paper and many people contributed to it. The final result is a very technical document based on a case study, which provides a level of detail that I don’t see often in other case studies (which are usually more marketing-oriented). This white paper has the following structure: Requirements (data model, capacity planning, client tool) Options considered (SQL Server Columnstore Indexes, SSAS Multidimensional, SSAS Tabular) Data Model optimizations (memory compression, query performance, scalability) Partitioning and Processing strategy for near real-time latency Hardware selection (NUMA analysis, Azure VM tests) Scalability tests (estimation of maximum users per node) If you are in charge of evaluating Tabular as analytical engine, or if you have to design your solution based on Tabular, this white paper is a must read. But if you just want to increase your knowledge of Analysis Services, you will find a lot of useful technical information. That said, my favorite quote of the document is the following one, funny but true: […] After several trials, the clear winner was a video gaming machine that one guy on the team used at home. That computer outperformed any available server, running twice as fast as the server-class machines we had in house. At that point, it was clear that the criteria for choosing the server would have to be expanded a bit, simply because it would have been impossible to convince the boss to build a cluster of gaming machines and trust it to serve our customers.  But, honestly, if a business has the flexibility to buy gaming machines (assuming the machines can handle capacity) – do this. Owen Graupman, inContact I want to write a longer discussion about how companies are adopting Tabular in scenarios where it is the hidden engine of a more complex solution (and not the classical “BI system”), because it is more frequent than you might expect (and has several advantages over many alternative approaches).

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  • Should we write detailed architecture design or just an outline when designing a program?

    - by EpsilonVector
    When I'm doing design for a task, I keep fighting this nagging feeling that aside from being a general outline it's going to be more or less ignored in the end. I'll give you an example: I was writing a frontend for a device that has read/write operations. It made perfect sense in the class diagram to give it a read and a write function. Yet when it came down to actually writing them I realized they were literally the same function with just one line of code changed (read vs write function call), so to avoid code duplication I ended up implementing a do_io function with a parameter that distinguishes between operations. Goodbye original design. This is not a terribly disruptive change, but it happens often and can happen in more critical parts of the program as well, so I can't help but wondering if there's a point to design more detail than a general outline, at least when it comes to the program's architecture (obviously when you are specifying an API you have to spell everything out). This might be just the result of my inexperience in doing design, but on the other hand we have agile methodologies which sort of say "we give up on planning far ahead, everything is going to change in a few days anyway", which is often how I feel. So, how exactly should I "use" design?

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  • Should we be able to deploy a single package to the SSIS Catalog?

    - by jamiet
    My buddy Sutha Thiru sent me an email recently asking about my opinion on a particular nuance of the project deployment model in SQL Server Integration Services (SSIS) 2012 and I’d like to share my response as I think it warrants a wider discussion. Sutha asked: Jamie What is your take on this? http://www.mattmasson.com/index.php/2012/07/can-i-deploy-a-single-ssis-package-from-my-project-to-the-ssis-catalog/ Overnight I was talking to Matt who confirmed that they got no plans to change the deployment model. For example if we have following scenrio how do we do deploy? Sprint 1 Pkg1, 2 & 3 has been developed and deployed to UAT. Once signed off its been deployed to Live. Sprint 2 Pkg 4 & 5 been developed. During this time users raised a bug on Pkg2. We want to make the change to Pkg2 and deploy that to UAT and eventually to LIVE without releasing Pkg 4 &5. How do we do it? Matt pointed me to his blog entry which I have seen before . http://www.mattmasson.com/index.php/2012/02/thoughts-on-branching-strategies-for-ssis-projects/ Thanks Sutha My response: Personally, even though I've experienced the exact problem you just outlined, I agree with the current approach. I steadfastly believe that there should not be a way for an unscrupulous developer to slide in a new version of a package under the covers. Deploying .ispac files brings a degree of rigour to your operational processes. Yes, that means that we as SSIS developers are going to have to get better at using source control and branching properly but that is no bad thing in my opinion. Claiming to be proper "developers" is a bit of a cheap claim if we don't even do the fundamentals correctly. I would be interested in the thoughts of others who have used the project deployment model. Do you agree with my point of view? @Jamiet

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  • Tomcat and IIS6 on one server, multiple websites

    - by Rafe
    Windows Server 2003 with IIS6 and Tomcat 6.0.26. Three sites running on this server. One is PHP, one is ASP and the third uses Tomcat. The first two work flawlessly. The third is being a pain. Tomcat is installed and if called on the server itself by IP address xxx.xxx.xxx.xxx:8080 shows the welcome page. Calling the same address from an external machine gives a 'could not connect' error. Calling the ip address from within the server on standard port 80 gives me an error 324 (net::ERR_EMPTY_RESPONSE). Have tried using httpcfg to force listening only on ports within the ip range I'm using in a manner similar to question 35650 located here on serverfault but with no success. There are actually ten ip addresses on this machine but I'm only using three of them at this point. Any pointers on troubleshooting this would be appreciated!

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  • Bootstrapping in CloudFormation with Autoscale

    - by PapelPincel
    My CloudFormation template creates an autoscale group and bootstrap it with utility script /opt/aws/bin/cfn-init. When I remove the bootstrap part out of my template the, autoscale get created without any problem, but I add it the CloudFormation Stack fails and add line in /var/log/cloud-init.log : Error: AutoScalingGroupName does not specify any metadata The line above appens right after the following command : /opt/aws/bin/cfn-init --verbose --configsets orderedConfig --region us-east-1 --stack AS15 --resource AutoScalingGroupName --access-key XXXXXXXXXXXXX --secret-key XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Digging a little bit deeper, in cfn-init I added the following lines the point where it exit: from pprint import pprint pprint(vars(detail)) and I get the following trace when running the previous cfn-init command : {'_description': None, '_lastUpdated': datetime.datetime(2012, 7, 12, 14, 52, 42), '_logicalResourceId': u'AutoScalingGroupName', '_metadata': None, '_physicalResourceId': u'AS15-AutoScalingGroupName-HNPOXXXXXXXX', '_resourceStatus': u'CREATE_COMPLETE', '_resourceStatusReason': None, '_resourceType': u'AWS::AutoScaling::AutoScalingGroup', '_stackId': u'arn:aws:cloudformation:us-east-1:XXXXXXXXXXXXX:stack/AS15/XXXXXXXX-cc30-11e1-XXXXXX-XXXXXXXXXX', '_stackName': u'AS15'} As you can see, the metadata field is empty and that's the reason why it fails to create the stack. Is there any known side effects for cfn-init when used with autoscale ?

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  • Is there a quick way to create a Windows shortcut to a file without it validating the path?

    - by Alistair McMillan
    Trying to create a shortcut for someone else. It needs to point to files on one of their mapped drives. Instead of waiting for them to be available and create the shortcut on their PC, I was hoping to just create the shortcut on my PC and then transfer it over to their PC. However Windows tries to validate the path as you create the shortcut and since I don't have access to the same files it is throwing up an error and won't create the shortcut. Is there a way to create a shortcut without the path being validated?

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  • JOGL hardware based shadow mapping - computing the texture matrix

    - by axel22
    I am implementing hardware shadow mapping as described here. I've rendered the scene successfully from the light POV, and loaded the depth buffer of the scene into a texture. This texture has correctly been loaded - I check this by rendering a small thumbnail, as you can see in the screenshot below, upper left corner. The depth of the scene appears to be correct - objects further away are darker, and that are closer to the light are lighter. However, I run into trouble while rendering the scene from the camera's point of view using the depth texture - the texture on the polygons in the scene is rendered in a weird, nondeterministic fashion, as shown in the screenshot. I believe I am making an error while computing the texture transformation matrix, but I am unsure where exactly. Since I have no matrix utilities in JOGL other then the gl[Load|Mult]Matrix procedures, I multiply the matrices using them, like this: void calcTextureMatrix() { glPushMatrix(); glLoadIdentity(); glLoadMatrixf(biasmatrix, 0); glMultMatrixf(lightprojmatrix, 0); glMultMatrixf(lightviewmatrix, 0); glGetFloatv(GL_MODELVIEW_MATRIX, shadowtexmatrix, 0); glPopMatrix(); } I obtained these matrices by using the glOrtho and gluLookAt procedures: glLoadIdentity() val wdt = width / 45 val hgt = height / 45 glOrtho(wdt, -wdt, -hgt, hgt, -45.0, 45.0) glGetFloatv(GL_MODELVIEW_MATRIX, lightprojmatrix, 0) glLoadIdentity() glu.gluLookAt( xlook + lightpos._1, ylook + lightpos._2, lightpos._3, xlook, ylook, 0.0f, 0.f, 0.f, 1.0f) glGetFloatv(GL_MODELVIEW_MATRIX, lightviewmatrix, 0) My bias matrix is: float[] biasmatrix = new float[16] { 0.5f, 0.f, 0.f, 0.f, 0.f, 0.5f, 0.f, 0.f, 0.f, 0.f, 0.5f, 0.f, 0.5f, 0.5f, 0.5f, 1.f } After applying the camera projection and view matrices, I do: glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR) glTexGenfv(GL_S, GL_EYE_PLANE, shadowtexmatrix, 0) glEnable(GL_TEXTURE_GEN_S) for each component. Does anybody know why the texture is not being rendered correctly? Thank you.

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  • Change from Bullet/OgreAnim to Havok?

    - by Brett Powell
    I have been working on a game in Ogre for the last 6 months or so. It started as a learning project, and after a few rewrites it actually turned into a real game project. Physics scared me, and using Bullet with its lack of documentation was a nightmare, but I was able to atleast get some basics added and learned a lot. So as of now I am using Ogre with its default animation system (fairly basic) and Bullet Physics. I had always wanted to use Havok when I started out, but due to lack of integration information on the Ogre forums, and lack of tutorials on the net, I decided against it. Now that I am actually at the point where Bullet is just too much of a headache to proceed with (staring at forum threads praying someone answers) and the Ogre animation system is so basic, I am considering switching to Havok for Physics and Animation. The Physics system looks extremely polished and easy to use. The animation system looks incredible with the retargeting/blending/etc. The documentation is incredibly detailed as well (I guess when you come from Bullet, any documentation looks amazing) So my question is, as I am still somewhat of a 'newbie' to game development, should I just stick with what I am using now or should I make the switch over to Havok? The physics looks like I could get my project back to where it is now with minimal effort, and be able to expand much faster. The animation aspect looks extremely daunting as far as integrating it with Ogre.

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  • What are the advantages of Maven when it comes to single man, educational projects

    - by Leron
    I've spend a few hours playing around with Maven + reading some stuff on the apache official site and also a few random googled articles. By this I mean that I really tried to find the answers myself - both by reading and by doing things on my own. Also maybe worth to mention that I installed the m2e plugin so most of the time I've tried things out from Eclipse and not using the command line too much. However aside from the generated project that for example prevent me from using the default package I didn't see that much of a difference with the standard way I've created my projects before try Maven. In fact I've almost decided to skip Maven for now and move on to the other technology I wanted to learn more in-depth - Hibernate, but when I start with opening the official page the first thing I've read was the recommendation to use Hibernate with Maven. That get me confused and made me taking a step back and trying once more to find what I'm obviously missing right now. As it's said in the maven.apache.. site, the true strength of Maven is shown when you work on large projects with other people, but I lack the option to see how Maven is really used in this scenario, still i think that there are maybe advantages even when it comes to working with small projects alone, but I really have difficulties to point them out. So what do you think are the advantages of Maven when it's used for small projects writing from a single person. What are the things that I should be aware of and try to exploit (I mean features offered by Maven) that can come in handy in this situations?

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  • Why I don't use SSIS checkpoint files

    - by jamiet
    In a recent discussion in regard to general ETL best practises the subject of checkpoint files as a means for package restartability came up and I stated that I was dead against using them. For anyone that may care, here is why: Configuring them is distinctly unintuitive (that's a matter of opinion but if you follow the link I'll wager that you will agree) they don't make any allowance for loop iterations they cannot store variables of type Object they are limited in ability. There are many scenarios where you may want to execute certain containers regardless of whether the package is started from a checkpoint file but the current usage model does not allow for this. they are ignored by eventhandlers, which wouldn't be so bad if there were a way to toggle this behaviour in certain scenarios they dont work properly I'll expand on the last bullet point. I have encountered situations where the behaviour for tasks executing concurrently is unpredictable. That is, sometimes the completion of a task that executes concurrently with a failed/failing task will make it into the checkpoint file and sometimes it won't. This is near-impossible to reproduce but it does happen as my good friend John Welch will hopefully concur (if he is reading). Is anyone out there making successful use of checkpoint files within SSIS? I would be interested in knowing about that if so. @Jamiet

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  • Vista Enterprise doesn't find logon servers in a network with 802.1x authentication

    - by jneves
    In a network with 802.1x configuration and a samba server configured in the domain, I have a radius server that delegates the authentication against the samba domain for users (using LDAP). The radius defines which VLAN the user is supposed to have access. I'm trying to put a Windows Vista Enterprise in the same network, but it attempts to logon the domain before authenticating against the network in 802.1x and it doesn't find any logon servers. In the radius logs I see the machine trying to authenticate with 'host/'. Does Vista enterprise require that I put it in a network with access to the logon server at that point? Thanks in advance, João Miguel Neves

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  • Max ping response time?

    - by DougN
    I'm wondering what a maximum (practical) ping response time might be. As far as I know, there isn't a max defined anywhere (TTL, but that's hops, not time). As I think about it, I'm not sure I've ever seen a ping response time of more than a second or so. But as far as I know, there is nothing to stop a remote host from waiting (or being really busy) and not sending the response back for a few seconds. As a simple data point, I just pinged a number of servers around the world and the worst time I could find was 350ms.

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  • Ghost Image - windows asks for activation on when deployed to VM

    - by Chris Sobolewski
    I have several images created with Ghost Solution Suite (v11 I believe), the images have been in use for a few years now, but I am finally to the point where I have enough time to attempt to virtualize them for easier updates. I am running VMWare and attempting to image the virtual machines with my ghost image files. For my images I am running sysprep with minisetup and using reseal. The image deploys successfully, however when I start the VM for the first time, it demands windows activation. This doesn't happen when I image a physical computer, even a different model with different hardware. The idea of virtualizing my images becomes rather worthless if I am unable to deploy the images without having to activate every time (especially as Microsoft keeps declaring our volume licence key as invalid for activations). Does anyone know why it is asking for activation on a virtual machine, but not a physical PC? How can I prevent this?

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  • What are the best options for a root filesystem hosted on SSD under Linux

    - by stsquad
    I'm working on an embedded system which is going to be booting and hosting it's rootfs on an SSD disk. We are currently looking at using Intel X-18M SSDs. The file system structure will have a fairly static /usr section (modulo software upgrades) and an active /var and /var/log for maintaining state and logging. Given the wear-levelling done by the underlying flash does having separate partitions help or hinder? As modern SSDs appear as straight block devices and hide their mapping magic behind their firmware is there any point trying to optimise the choice of file-system that sits on-top of the SSD? Finally does enable SMART monitoring make any sense in this context or are their SSD specific ways of determining the underlying health of the storage hardware?

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  • Dell Vostro 1000 w/fresh XP Pro installation running very slow

    - by ssvarc
    I'm working on a Dell Vostro 1000 laptop. It was running slowly and hanging, antivirus scans turned up nothing and the same with the Dell diagnostics (DFT hung - but Dell's diagnostics gave the HD a pass) so I imaged the HD and installed XP Pro on it. The laptop is still slow! (It takes a noticeable delay to enter words into the Google search box in IE and the computer hangs every time it enters the XP screensaver.) What are the likely possibilities at this point and how would I go about checking for them?

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  • Virtual machine image compatibility between VMware Server and VMware Player

    - by alexandrul
    I'm trying to minimize the number of different product versions used on my PC's both at work and at home. So far I have a mixture of: VMware Server 1.0.7 VMware Server 2.0.2 VMware Player 2.5.3 VMware Player 3.0.0 and I would love to upgrade each product family to the latest version. Since Virtual Machine Mobility Guide is marked as deprecated, can anyone point me to some fresh information about virtual machine compatibility between VMware Player and VMware Server, in order to still be able to move virtual machines back and forth between the mentioned products? Update What I'm looking for is an updated document with virtual machines hardware versions, and the VMware products that are able to use that specific hardware version, so I can know - given the products that are using a specific virtual machine - what is the maximum hardware version that I can update the virtual machine to.

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