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• BPM Solution Catalogue–promote your process templates

  - by JuergenKress

  Oracle’s BPM Solution Catalogue showcasing our solutions with partners is now live. Take a look at the initial entries here. We are planning to use this catalogue not only to publish and highlight successful BPM implementations but also will be running campaigns in industry verticals with your solutions. If you have delivered a successful implementation in BPM and think it could be reused and applied again in a similar scenario in the same industry or in a similar environment, then we are keen to know about it and will add it to the solution catalogue. The solution catalogue will showcase successful BPM solutions both inside and outside Oracle. Be in touch with us on this via this e-mail id and we will make sure to add your solution. For more information you can also read the article “Leading-Edge BPM Benefits Without Bleeding-Edge Pain” SOA & BPM Partner Community For regular information on Oracle SOA Suite become a member in the SOA & BPM Partner Community for registration please visit  www.oracle.com/goto/emea/soa (OPN account required) If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Technorati Tags: BPM,Solution Catalogue,process templates,BPM Suite,SOA Community,Oracle SOA,Oracle BPM,Community,OPN,Jürgen Kress

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• Automated Acceptance tests under specific contraints

  - by HH_

  This is a follow up to my previous question, which was a bit general, so I'll be asking for a more precise situation. I want to automate acceptance testing on a web application. Briefly, this application allows the user to create contracts for subscribers with the two constraints: You cannot create more than one contract for a subscriber. Once a contract is created, it cannot be deleted (from the UI) Let's say TestCreate is a test case with tests for the normal creation of a contract. The constraints have introduced complexities to the testing process, mainly dependencies between test cases and test executions. Before we run TestCreate we need to make sure that the application is in a suitable state (the subscriber has no contract) If we run TestCreate twice, the second run will fail since the state of the application will have changed. So we need to revert back to the initial state (i.e. delete the contract), which is impossible to do from the UI. More generally, after each test case we should guarantee that the state is reverted back. And since, in this case, it is impossible to do it from the UI, how do you handle this? Possible solution: I thought about doing a backup of the database in the state that I desire, and after each test case, run a script which deletes the db and restores the backup. However, I find that to be too heavy to do for each single test case. In addition, what if some information are stored in files? or in multiple or unaccessible databases? My question: In this situation, what would an experienced tester do to write automated and maintanable tests. Thank you. More info: I'm trying to integrate tests into a BDD framework, which I find to be a neat solution for test documentation and communication, but it does not solve this particular problem (it even makes it harder)

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• Developer momentum on open source projects

  - by sashang

  Hi I've been struggling to develop momentum contributing to open source projects. I have in the past tried with gcc and contributed a fix to libstdc++ but it was a once off and even though I spent months in my spare time on the dev mailing list and reading through things I just never seemed to develop any momentum with the code. Eventually I unsubscribed and got my free time back and uncluttered my mailbox. Like a lot of people I have some little open source defunct projects lying around on the net, but they're not large and I'm the only contributor. At the moment I'm more interested in contributing to a large open source project and want to know how people got started because I find it difficult while working full time to develop any momentum with the code base. Other more regular contributors, who are on the project full-time, are able to make changes at will and as result enter that positive feedback cycle where they understand the code and also know where it's heading. It makes the barrier to entry higher for those that come along later. My questions are to people who actively contribute to large opensource projects, like the Linux kernel, or gcc or clang/llvm or anything else with say a developer head count of more than 10. How did you get started? Was there a large chunk of time in your life that you just could dedicate to working on the project? I know in Linus's case he had a chunk of time (6 months) to get it started. What barriers to entry did you encounter? Can you describe the initial stages of the time spent with the project, from when you had little understanding of the code to when you understood enough to commit regularly. Thanks

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• CodePlex Daily Summary for Sunday, October 14, 2012

  CodePlex Daily Summary for Sunday, October 14, 2012Popular ReleasesJsQueryExpression: Initial release: Initial release is aimed to present a public view for community. It is in your own risk to use it in a production environment. Please send feedbacks with your experiences.ZXMAK2: Version 2.6.4.0: - added RZX playback - fix Reset behaviorDroid Explorer: Droid Explorer 0.8.8.8 Beta: fixed the icon for packages on the desktop fixed the install dialog closing right when it starts removed the link to "set up the sdk for me" as this is no longer supported. fixed bug where the device selection dialog would show, even if there was only one device connected. fixed toolbar from having "gap" between other toolbar removed main menu items that do not have any menus Fiskalizacija za developere: FiskalizacijaDev 1.0: Prva verzija ovog projekta, još je uvijek oznacena kao BETA - ovo znaci da su naša testiranja prošla uspješno :) No, kako mi ne proizvodimo neki software za blagajne, tako sve ovo nije niti isprobano u "realnim" uvjetima - svaka je sugestija, primjedba ili prijava bug-a je dobrodošla. Za sve ovo koristite, molimo, Discussions ili Issue Tracker. U ovom trenutku runtime binary je raspoloživ kao Any CPU za .NET verzije 2.0. Javite ukoliko trebaju i verzije buildane za 32-bit/64-bit kao i za .N...Squiggle - A free open source LAN Messenger: Squiggle 3.2 (Development): This release is mainly for enabling extensibility and interoperability with other platforms. Support for plugins Support for extensions Communication layer and protocol is platform independent (ZeroMQ, ProtocolBuffers) Bug fixes New /invite command Edit the sent message Disable update check NOTE: This is development release and not recommended for production use.AcDown????? - AcDown Downloader Framework: AcDown????? v4.2: ??●AcDown??????????、??、??、???????。????，????，?????????????????????????。???????????Acfun、????(Bilibili)、??、??、YouTube、??、???、??????、SF????、????????????。 ●??????AcPlay?????，??????、????????????????。 ● AcDown??????????????????，????????????????????????????。 ● AcDown???????C#??，????.NET Framework 2.0??。?????"Acfun?????"。 ????32??64? Windows XP/Vista/7/8 ???? 32??64? ???Linux ????(1)????????Windows XP???，????????.NET Framework 2.0???(x86)，?????"?????????"??? (2)???????????Linux???，????????Mono?? ??2...PHPExcel: PHPExcel 1.7.8: See Change Log for details of the new features and bugfixes included in this release, and methods that are now deprecated. Note changes to the PDF Writer: tcPDF is no longer bundled with PHPExcel, but should be installed separately if you wish to use that 3rd-Party library with PHPExcel. Alternatively, you can choose to use mPDF or DomPDF as PDF Rendering libraries instead: PHPExcel now provides a configurable wrapper allowing you a choice of PDF renderer. See the documentation, or the PDF s...DirectX Tool Kit: October 12, 2012: October 12, 2012 Added PrimitiveBatch for drawing user primitives Debug object names for all D3D resources (for PIX and debug layer leak reporting)GoogleMap Control: GoogleMap Control 6.1: Some important bug fixes and couple of new features were added. There are no major changes to the sample website. Source code could be downloaded from the Source Code section selecting branch release-6.1. Thus just builds of GoogleMap Control are issued here in this release. Update 14.Oct.2012 - Client side access fixed NuGet Package GoogleMap Control 6.1 NuGet Package FeaturesBounds property to provide ability to create a map by center and bounds as well; Setting in markup <artem:Goog...mojoPortal: 2.3.9.3: see release notes on mojoportal.com http://www.mojoportal.com/mojoportal-2393-released Note that we have separate deployment packages for .NET 3.5 and .NET 4.0, but we recommend you to use .NET 4, we will probably drop support for .NET 3.5 once .NET 4.5 is available The deployment package downloads on this page are pre-compiled and ready for production deployment, they contain no C# source code and are not intended for use in Visual Studio. To download the source code see getting the lates...OstrivDB: OstrivDB 0.1: - Storage configuration: objects serialization (Xml, Json), storage file compressing, data block size. - Caching for Select queries. - Indexing. - Batch of queries. - No special query language (LINQ used). - Integrated sorting and paging. - Multithreaded data processing.D3 Loot Tracker: 1.5.4: Fixed a bug where the server ip was not logged properly in the stats file.Captcha MVC: Captcha Mvc 2.1.2: v 2.1.2: Fixed problem with serialization. Made all classes from a namespace Jetbrains.Annotaions as the internal. Added autocomplete attribute and autocorrect attribute for captcha input element. Minor changes. Updated: I'm added an example for this question. v 2.1.1: Fixed problem with serialization. Minor changes. v 2.1: Added support for storing captcha in the session or cookie. See the updated example. Updated example. Minor changes. v 2.0.1: Added support for a partial ...DotNetNuke® Community Edition CMS: 06.02.04: Major Highlights Fixed issue where the module printing function was only visible to administrators Fixed issue where pane level skinning was being assigned to a default container for any content pane Fixed issue when using password aging and FB / Google authentication Fixed issue that was causing the DateEditControl to not load the assigned value Fixed issue that stopped additional profile properties to be displayed in the member directory after modifying the template Fixed er...WinRT XAML Toolkit: WinRT XAML Toolkit - 1.3.3: 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 Attachable Behaviors AwaitableUI extensions Controls Converters Debugging helpers Extension methods Imaging helpers IO helpers VisualTree helpers Samples Recent changes NOTE:...VidCoder: 1.4.4 Beta: Fixed inability to create new presets with "Save As".MCEBuddy 2.x: MCEBuddy 2.3.2: Changelog for 2.3.2 (32bit and 64bit) 1. Added support for generating XBMC XML NFO files for files in the conversion queue (store it along with the source video with source video name.nfo). Right click on the file in queue and select generate XML 2. UI bugifx, start and end trim box locations interchanged 3. Added support for removing commercials from non DVRMS/WTV files (MP4, AVI etc) 4. Now checking for Firewall port status before enabling (might help with some firewall problems) 5. User In...Sandcastle Help File Builder: SHFB v1.9.5.0 with Visual Studio Package: General InformationIMPORTANT: On some systems, the content of the ZIP file is blocked and the installer may fail to run. Before extracting it, right click on the ZIP file, select Properties, and click on the Unblock button if it is present in the lower right corner of the General tab in the properties dialog. This release supports the Sandcastle October 2012 Release (v2.7.1.0). It includes full support for generating, installing, and removing MS Help Viewer files. This new release suppor...ClosedXML - The easy way to OpenXML: ClosedXML 0.68.0: ClosedXML now resolves formulas! Yes it finally happened. If you call cell.Value and it has a formula the library will try to evaluate the formula and give you the result. For example: var wb = new XLWorkbook(); var ws = wb.AddWorksheet("Sheet1"); ws.Cell("A1").SetValue(1).CellBelow().SetValue(1); ws.Cell("B1").SetValue(1).CellBelow().SetValue(1); ws.Cell("C1").FormulaA1 = "\"The total value is: \" & SUM(A1:B2)"; var...Picturethrill: Version 2.10.7.0: Major FeaturesWindows 8 Support!!! Picturethrill is fully tested on latest Windows 8. Try it now.New AboutPicturethrill Dialog Available from "Advanced" window. Describes Version, Developers and other infoFull Installation Information in Control Panel Picturethrill in ControlPanel has full information, including Version and Size. Minor Bug FixesImproved Logging AppDomain Unhandled Exception Logging Delete WallpaperDownload Folder (Saves Diskspace) Advanced Settings "Close" button bug ...New Projects_p2: Testing rest.A Standard Programmatic Interface for Asynchronous Operations: The project codename "Indigo" is a prototype implementation of the N3327 proposal to JTC1/SC22/WG21AlgoritmTeorija: Some work for KTU.ASP.Net WebAPI Sample: Web API and knockout test drive For full details [url:http://magedfarag.wordpress.com/2012/10/13/asp-net-web-api-knockout-test-drive/]CDMA Messaging: .NET CDMA Messaging LibraryChimera USB: This project integrates flash memory sticksdream drumming: a win8 Metro GameInteractivity Libraries for Windows Store App: System.Windows.Interactivity ? Windows ????????????。 Windows ??????? Trigger ? Behavior ???????。Knapsack: This projects goal is to share different algorithms coded in .NET to solve the KnapSack problem.NOSDC: The Northern Ontario Software Developer Community (NOSDC) brings together software developers from all over Northern Ontario to expand and share our knowledge asumtwonumbers: This is a simple code to sum two numbers by WeamSVConnect: Lightweight and efficient SOAP client library for Java (Android platform) to connect Java with WCF services.TFS 2012 Server/service Setup for Demo: Set up a TFS 2012 Server/Service demo environment in less than 1 minute now! Web API Spatial Formatters: Web API Formatters for providing simple spatial data services that can be easily integrated into a range of mapping toolkits. WillCall: A stab at a schcheduler.yongyou_web_b: Summary

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• Can't play Steel Storm, Burning Retribution

  - by Goytor

  I've bougth Steel Storm, Burning Retribution in the Software Center, and every time I run it shows the following message: You have reached this menu due to missing or unlocable content/data You may consider adding -base dir /path/to/game to your launch commandline I've gone to main menu in the preferences tab and changed the launcher to no avail. I've tried running it from console, with /opt/steelstorm-episode2/steelstorm, I got: Game is Steel-Storm using base gamedir gamedata Steel-Storm Linux 01:07:07 Jun 11 2011 - release Playing shareware version. Skeletal animation uses SSE code path DPSOFTRAST available (SSE2 instructions detected) Failed to init SDL joystick subsystem: couldn't exec quake.rc couldn't exec default.cfg execing config.cfg couldn't exec autoexec.cfg Client using an automatically assigned port Client opened a socket on address 0.0.0.0:0 Client opened a socket on address [0:0:0:0:0:0:0:0]:0 Linked against SDL version 1.2.12 Using SDL library version 1.2.14 GL_VENDOR: NVIDIA Corporation GL_RENDERER: GeForce 6150SE nForce 430/PCI/SSE2/3DNOW! GL_VERSION: 2.1.2 NVIDIA 270.41.06 vid.support.arb_multisample 1 vid.mode.samples 0 vid.support.gl20shaders 1 Video Mode: fullscreen 640x480x32x0.00hz S_Startup: initializing sound output format: 48000Hz, 16 bit, 2 channels... Wanted audio Specification: Channels : 2 Format : 0x8010 Frequency : 48000 Samples : 2048 Obtained audio specification: Channels : 2 Format : 0x8010 Frequency : 48000 Samples : 1024 Sound format: 48000Hz, 2 channels, 16 bits per sample CDAudio_Init: No CD in player. Can't get initial CD volume CD Audio Initialized If I try -base /opt/steelstorm-episode2/steelstorm says "command not found".

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• Amazon CloudFormations and Oracle Virtual Assembly Builder

  - by llaszews

  Yesterday I blogged about AWS AMIs and Oracle VM templates. These are great mechanisms to stand up an initial cloud environment. However, they don't provide the capability to manage, provision and update an environment once it is up and running. This is where AWS Cloud Formations and Oracle Virtual Assembly Builder comes into play. In a way, these tools/frameworks pick up where AMIs and VM templates leave off. Once again, there a similar offers from AWS and Oracle that compliant and also overlap with each other. Let's start by looking at the definitions: AWS CloudFormation gives developers and systems administrators an easy way to create and manage a collection of related AWS resources, provisioning and updating them in an orderly and predictable fashion. AWS CloudFormations Oracle Virtual Assembly Builder - Oracle Virtual Assembly Builder makes it possible for administrators to quickly configure and provision entire multi-tier enterprise applications onto virtualized and cloud environments. Oracle VM Builder As with the discussion around should you use AMI or VM Templates, there are pros and cons to each: 1. CloudFormation is JSON, Assembly Builder is GUI and CLI 2. VM Templates can be used in any private or public cloud environment. Of course, CloudFormations is tied to AWS public cloud

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• Resolution stuck in 640x480 in grub, 11.04 and 12.04

  - by user89797

  I have three operating systems on my machine, Windows 7x64, Ubuntu 11.10 and 12.04 both x64 as well. All three were running at full resolution for my monitor, as well as in the Grub 1.99 boot screen. After booting into Windows, I rebooted my machine and found my Grub resolution was suddenly 640x480. Booting into both versions of Ubuntu, I find myself stuck at that resolution as well. I made no driver changes recently, and hadn't even booted into the 11.10 build in a month or more. I've gone through both proprietary Nvidia driver options for my card (GeForce 9800GT) as well as the open source drivers in 12.04 to no avail. I can't figure out what could have caused this change in both versions of Ubuntu and Grub simultaneously. Windows 7 is unaffected so I think that safely rules out hardware failure. EDIT Ok, so I couldn't boot an graphical live disks, I tried ubuntu 12.04 i386 and x64 as well as 12.10 beta x64 and all of them would flash the initial logo, go to a blank screen with a flashing cursor in the upper left and then my display would die. I managed to boot 12.04 server and get into recovery. I reinstalled grub and went into recovery mode for my 12.04 build. If I boot in safe graphics mode I can get 1280x768, but as soon as I reboot it's broken again. I've tried reinstalling the nvidia drivers and that leaves me with a system stuck at max 640x480. None of these changes have had any impact on the 11.10 build, which is still stuck at 640x480 Given that I can push a somewhat higher resolution in 12.04, and full resolution in windows 7 I'm pretty convinced it's not an issue of my monitor failing. It must be something to do with the graphics drivers. I can't figure out what could be the issue though. I'm especially perplexed that I can't boot any live images

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• SQL Source Control with Vault Support Officially Released

  - by Ajarn Mark Caldwell

  HOORAY!  It is officially here!  Today, Red-Gate officially released SQL Source Control version 2.1 with support for Vault. While we have been happily and successfully running the beta version (a.k.a. the Early Access release) of Red-Gate SQL Source Control with support for Vault for quite a while, it is good to have the official RTM (or GOLD, or PROD, or whatever you call your “no-longer-in-beta”) release of the product. As a courtesy to those who have not already read the series, allow me to provide you with these links to my previous posts about this fantastic tool. Using SQL Source Control with Fortress or Vault – Part 1 – Introduction and initial thoughts about the tool and source controlling SQL code in general. Using SQL Source Control with Fortress or Vault – Part 2 – Additional details about included features and a few warnings. Source Control and SQL Development – Part 3 – How we did it in the good ol’ days before this product came along. Using SQL Source Control and Vault Professional Part 4 – A few closing thoughts.

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• Advice on software infrastructure for a FLOSS bounty site

  - by michaeljt

  I am planning to set up a simple web site where people can offer bounties for work on FLOSS projects. Unfortunately I have no experience at web development (I am a C/C++ developer), so I was hoping someone might be able to suggest out-of-the-box packages (preferably Debian ones) I could use to build the site from. My idea of how the site would work is to keep things as simple as possible. The person proposing a bounty would enter a description with relevant links (particularly to a bugtracker entry with the project the work is to be done on, where the real discussion and work would take place) and information and place an initial contribution. Other people would be able to add (donate, not pledge) contributions, but any discussion would take place on the project's bugtracker. I am also planning to run a mailing list rather than a forum (at least initially), so that is not a requirement. Paypal seems to me to be the handiest payment mechanism. So overall what I need is probably a simple interface with Paypal integration and a simple database backend. I hope this is the right place for my question, if not I would be grateful for pointers to somewhere better. And of course, this is purely about the technical side, though I am more than happy to discuss other aspects of the project elsewhere.

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• Demantra Implementation Tip Windows and Unix or Linux

  - by user702295

  Hello!  Are you implementing using a third party or consulting resources?   Recently we have seen some cases where customers no longer have a windows installation.  After the initial install and configuration, once the instance has gone live, the windows install is either deleted or most likely no longer with the customer as the same was installed on the implementers' laptop to start with. As a result when support comes back requesting the customer to apply a patch and/or upgrade they do not have a windows installation.  This has started happening after Oracle Demantra gave them the option to configure the engine on Unix.  Workaround: It is advisable that the customer keep their Windows installation intact for further patching and/or upgrade.  It is aslo possible that the implementer had installed Demantra on his Windows box and you do not have access to it any more.  It is possible that with the web and engine on Unix, and the silent installer having downloaded all the executable for Business Modeler, to work on the User's client machine, you may no longer need the windows install. I have not tested the above 

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• Clean MVC design when there is viewer latency

  - by Tony Suffolk 66

  It isn't clear if this question has already been answered, so apologies in advance if this is a duplicate : I am implementing a game and trying to design around a clean MVC pattern - so my Control plane will implement the rules of the game (but not how the game is displayed), and the View plane implements how the game is displayed, and user iteraction - i.e. what game items or controls the user has activated. The challenge that I have is this : In my game the Control Plane can move game items more or less instaneously (The decision about what item to place where - and some of the initial consequences of that placement are reasonably trivial to calculate), but I want to design the Control Plane so that the View plane can display these movements either instaneously or using movement animations. The other complication is that player interaction must be locked out while those game items are moving (similar to chess - you can't attack an opposing piece as it moves past one of your pieces) So do I : Implement all the logic in the Control Plane asynchronously - and separate the descision making from the actions - so the Control plane decides piece 'A' needs to move to a given place - tells the view plane, and but does not implement the move in data until the view plane informs the control plane that the move/animation is complete. A lot of interlock points between the two layers. Implement all the control plane logic in one place - decisions and movement (keeping track of what moved where), and pass all the movements in one go to the View plane to do with what it will. Control Plane is almost fire and forget here. A hybrid of 1 & 2 - The control plane implements all the moves in a temporary data store - but maintains a second store which reflects what is actually visible to the viewer, based on calls and feedback from the View plane. All 3 are relatively easy to implement (target language is python), but having never done a clean MVC pattern with view latency before - I am not sure which design is best

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• Iterative and Incremental Principle Series 1: The Dreaded Assignment

  - by llowitz

  A few days ago, while making breakfast for my teenage son… he turned to me and happily exclaimed, “I really like how my high school Government class assigns our reading homework.  In middle school, we had to read a chapter each week.  Everyone dreaded it.  In high school, our teacher assigns us a section or two every day.  We still end up reading a chapter each week, but this way is so much easier and I’m actually remembered what I’ve read!” Wow!  Once I recovered from my initial shock that my high school son actually initiated conversation with me, it struck me that he was describing one of the five basic OUM principles -- Iterative and Incremental.   Not only did he describe how his teacher divided a week long assignment into daily increments, but he went on to communicate some of the major benefits of having shorter, more achievable milestones.  I started to think about other applications of the iterative and incremental approach and I realized that I had incorporated this approach when I recently rededicated myself to physical fitness.  Join me over the next four days as I present an Iterative and Incremental blog series where I relate my personal experience incorporating the iterative and incremental approach and the benefits that I achieved.

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• Adjust sprite bounds of the visible part of texture

  - by Crazy D0G

  Is there any way to adjust the boundaries of the visible part of the sprite? To make it easier to understand: I have a texture, such as shown at figure 1. Then I break it into pieces and fill the resulting fragments using PRKit (wood texture on figure 2 and 3). But the resulting fragments have the transparent (green color on figure 2 and 3) and when creating a sprite from the fragments they have the size of the initial texture. Is there a way to get rid of this transparency and to adjust the size of the visible part (wood texture), openGL or cocos2d-x means? Maybe it help - draw() method from PRKit: void PRFilledPolygon::draw() { //CCNode::draw(); glDisableClientState(GL_COLOR_ARRAY); // we have a pointer to vertex points so enable client state glBindTexture(GL_TEXTURE_2D, texture->getName()); glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_ONE_MINUS_SRC_ALPHA); glVertexPointer(2, GL_FLOAT, 0, areaTrianglePoints); glTexCoordPointer(2, GL_FLOAT, 0, textureCoordinates); glDrawArrays(GL_TRIANGLES, 0, areaTrianglePointCount); glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE); //Restore texture matrix and switch back to modelview matrix glEnableClientState(GL_COLOR_ARRAY);}

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• Developing momentum on open source projects

  - by sashang

  Hi I've been struggling to develop momentum contributing to open source projects. I have in the past tried with gcc and contributed a fix to libstdc++ but it was a once off and even though I spent months in my spare time on the dev mailing list and reading through things I just never seemed to develop any momentum with the code. Eventually I unsubscribed and got my free time back and uncluttered my mailbox. Like a lot of people I have some little open source defunct projects lying around on the net, but they're not large and I'm the only contributor. At the moment I'm more interested in contributing to a large open source project and want to know how people got started because I find it difficult while working full time to develop any momentum with the code base. Other more regular contributors, who are on the project full-time, are able to make changes at will and as result enter that positive feedback cycle where they understand the code and also know where it's heading. It makes the barrier to entry higher for those that come along later. My questions are to people who actively contribute to large opensource projects, like the Linux kernel, or gcc or clang/llvm or anything else with say a developer head count of more than 10. How did you get started? Was there a large chunk of time in your life that you just could dedicate to working on the project? I know in Linus's case he had a chunk of time (6 months) to get it started. What barriers to entry did you encounter? Can you describe the initial stages of the time spent with the project, from when you had little understanding of the code to when you understood enough to commit regularly. Thanks

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• Implementing Circle Physics in Java

  - by Shijima

  I am working on a simple physics based game where 2 balls bounce off each other. I am following a tutorial, 2-Dimensional Elastic Collisions Without Trigonometry, for the collision reactions. I am using Vector2 from the LIBGDX library to handle vectors. I am a bit confused on how to implement step 6 in Java from the tutorial. Below is my current code, please note that the code strictly follows the tutorial and there are redundant pieces of code which I plan to refactor later. Note: refrences to this refer to ball 1, and ball refers to ball 2. /* * Step 1 * * Find the Normal, Unit Normal and Unit Tangential vectors */ Vector2 n = new Vector2(this.position[0] - ball.position[0], this.position[1] - ball.position[1]); Vector2 un = n.normalize(); Vector2 ut = new Vector2(-un.y, un.x); /* * Step 2 * * Create the initial (before collision) velocity vectors */ Vector2 v1 = this.velocity; Vector2 v2 = ball.velocity; /* * Step 3 * * Resolve the velocity vectors into normal and tangential components */ float v1n = un.dot(v1); float v1t = ut.dot(v1); float v2n = un.dot(v2); float v2t = ut.dot(v2); /* * Step 4 * * Find the new tangential Velocities after collision */ float v1tPrime = v1t; float v2tPrime = v2t; /* * Step 5 * * Find the new normal velocities */ float v1nPrime = v1n * (this.mass - ball.mass) + (2 * ball.mass * v2n) / (this.mass + ball.mass); float v2nPrime = v2n * (ball.mass - this.mass) + (2 * this.mass * v1n) / (this.mass + ball.mass); /* * Step 6 * * Convert the scalar normal and tangential velocities into vectors??? */

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• CodePlex Daily Summary for Sunday, July 21, 2013

  CodePlex Daily Summary for Sunday, July 21, 2013Popular ReleasesMagick.NET: Magick.NET 6.8.6.601: Magick.NET linked with ImageMagick 6.8.6.6.MISAO: Ver. 5.33: Latest app and add-insC# Intellisense for Notepad++: Initial release: Members auto-complete Integration with native Notepad++ Auto-Completion Auto "open bracket" for methods Right-arrow to accept suggestions51Degrees.mobi - Mobile Device Detection and Redirection: 2.1.19.4: One Click Install from NuGet This release introduces the 51Degrees.mobi IIS Vary Header Fix. When Compression and Caching is used in IIS, the Vary header is overwritten, making intelligent caching with dynamic content impossible. Find out more about installing the Vary Header fix. Changes to Version 2.1.19.4Handlers now have a ‘Count’ property. This is an integer value that shows how many devices in the dataset that use that handler. Provider.cs -> GetDeviceInfoByID to address a problem w...SalarDbCodeGenerator: SalarDbCodeGenerator v2.1.2013.0719: Version 2.1.2013.0719 2013/7/19 Pattern Changes: * DapperContext pattern is added. * All patterns are updated to work with one-to-one relations. Changes: * One-to-one relation is supported. * Minor bug fixes.Player Framework by Microsoft: Player Framework for Windows and WP (v1.3 beta 2): Includes all changes in v1.3 beta 1 Additional support for Windows 8.1 Preview New API (JS): addTextTrack New API (JS): msKeys New API (JS): msPlayToPreferredSourceUri New API (JS): msSetMediaKeys New API (JS): onmsneedkey New API (Xaml): SetMediaStreamSource method New API (Xaml): Stretch property New API (Xaml): StretchChanged event New API (Xaml): AreTransportControlsEnabled property New API (Xaml): IsFullWindow property New API (Xaml): PlayToPreferredSourceUri proper...Outlook 2013 Add-In: Multiple Calendars: As per popular request, this new version includes: - Support for multiple calendars. This can be enabled in the configuration by choosing which ones to show/hide appointments from. In some cases (public folders) it may time out and crash, and so far it only supports "My Calendars", so not shared ones yet. Also they're currently shown in the same font/color so there are no confusions with color categories, but please drop me a line on any suggestions you'd like to see implemented. - Added fri...Circuit Diagram: Circuit Diagram 2.0 Beta 2: New in this release: Show grid in editor Cut/copy/paste support Bug fixesDaRenamer: Renamer 2.1.0.5: Version 2.1.0.5 -fixed minor bugInstall Verify Tool: Install Verify Tool V 1.0: Win Service Web Service Win Service Client Web Service ClientOrchard Project: Orchard 1.7 RC: Planning releasedTerminals: Version 3.1 - Release: Changes since version 3.0:15992 Unified usage of icons in user interface Added context menu in Organize favorites grid Fixed:34219 34210 34223 33981 34209 Install notes:No changes in database (use database from release 3.0) No upgrade of configuration, passwords, credentials or favorites See also upgrade notes for release 3.0PMU Connection Tester: PMU Connection Tester v4.4.0: This is the current release build of the PMU Connection Tester, version 4.4.0 This version of the connection tester was released with openPDC 1.5 SP1 and openPDC 2.0 BETA. This application requires that .NET 4.0 already be installed on your system. Note this is the last release of the PMU Connection Tester that will built on .NET 4.0 using the TVA Code Library and the Time-series Framework. Future releases of the PMU Connection Tester will be built on .NET 4.5 (or later) using the Grid Sol...HiUpdateTools - easy publish and update your app: HiUpdateTools Add-in 1.0.0.5: - Generate ClientConfig.xml and adding to the project - Set ClientConfig.xml option "CopyToOutputDirectory"= Copy if newer - Fix client path not ending the backslash - Add Client assembly to VSX package - On first use, the tool is added to the reference to the client assembly - Fix client application - Multi-instance application - Run single instance of update applicationopen gaze and mouse analyzer: Ogama 4.4 BETA: This beta was published on 16.07.2013 and includes fixes and improvements since last 4.3 release, mainly in the recording section which solves problems with tobii and mirametrix devices, see the source code tab for details. Please test it, if you have one of this devices and give me feedback using the issue tracker or discussion tabs. Don´t forget to install .Net 4 framework and SQL Express before installing Ogama. When using Tobii tracking devices, you have to install apple bonjour also. On...SpaceFlight: SpaceFlight_v1.1: Added VCRedist.exe , run this first if you get the "MSVCP100.dll is missing" issueAdvanced Resource Tab for Blend: Advanced Resource Tab 2.0: Added filtering of (sub)-resource items and collapsing / expanding of all resource dictionaries.Media Companion: Media Companion MC3.573b: XBMC Link - Let MC update your XBMC Library Fixes in place, Enjoy the XBMC Link function Well, Phil's been busy in the background, and come up with a Great new feature for Media Companion. Currently only implemented for movies. Once we're happy that's working with no issues, we'll extend the functionality to include TV shows. All the help for this is build into the application. Go to General Preferences - XBMC Link for details. Help us make it better* Currently only tested on local and ...Wsus Package Publisher: Release v1.2.1307.15: Fix a bug where WPP crash if 'ShowPendingUpdates' is start with wrong credentials. Fix a bug where WPP crash if ArrivalDateAfter and ArrivalDateBefore is equal in the ComputerView. Add a filter in the ComputerView. (Thanks to NorbertFe for this feature request) Add an option, when right-clicking on a computer, you can ask for display the current logon user of the remote computer. Add an option in settings to choose if WPP ping remote computers using IPv4, IPv6 or IPv6 and, if fail, IP...Lab Of Things: vBeta1: Initial release of LoTNew ProjectsBlindspot: This project aims to create a fully-functional windowless desktop application allowing blind/visually impaired music fans the chance to access Spotify.HelloReading: ???????MonteMediaCC: The Monte Media Library is a Java library for processing media data. Supported media formats include still images, video, audio and meta-data. NETDeob: Deobfuscator and Unpacker for .NET Files.NthCatalanNumber: Write a program to calculate the Nth Catalan number by given N. http://en.wikipedia.org/wiki/Catalan_numberPokemon Battle Online 0791: ???????project site: the-west minimapPSeG Server FIles: PSeG Server FilesSample VariableSizedWrapGrid: This is an example of the use of particular VariableSizedWrapGrid GridView control. Where we can set the size of each item as needed It can make an appearance oServices Monitoring Management Pack: La supervision des services automatiques est un élément qui est déficient dans Operations Manager. Ce « Management Pack » sert à surveiller les services automatSinaIsTestingHisNewProject: this project is only for testing this site and any copying without my permission will be sewed by me and will be tracked by CIA and FBI and will be HeadShotSum of a sequence: Write a program that, for a given two integer numbers N and X, calculates the sumS = 1 + 1!/X + 2!/X2 + … + N!/XN Synchrophasor Analytics: Synchrophasor Analytics is a front end data processing and conditioning for downstream phasor based applications and an extension for development and analysis.tcp-bridge: a tcp bridge service to redirect incoming connections to another machine by using another incoming or outgoing connectionTypeScript Class Library: The TypeScript Class Library WPDialog: Library for developing app dialogs for Windows phone similar to Monotouch.DialogWPF File Renamer: Simple file renaming application made to brush up on my WPF data binding and MVVM skills.

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• What can be done against language inertia?

  - by gerrit

  Often, projects use programming language X, but would use programming language Y if they were started from scratch. For example, big numerical models may be written entirely in Fortran. Whereas this might be a reasonable choice for the components that need to run fast (alternative would be C or C++), it might be a poor choice for components that either do not need to run fast (such as things dealing with human input or simple visualisations), or where runtime is not the limiting factor (such as I/O, particularly when from the network). Another example may be when a project is built using a propriety language (such as Matlab; no, FOSS clones are not good enough) and was started at a time when FOSS alternatives were not viable, but ten years later, they are; and it would be beneficial to migrate. However, due to language inertia, a migration does not happen. Code that works should not be touched, porting code is a time-consuming, expensive process, and programmers are familiar in language X but not necessarily in language Y. Still, in the long term, a migration would likely be beneficial. Can anything be done to mitigate the problems associated with language inertia? Are there any notable examples of big projects that have successfully overcome this problem? Or is a project bound to stick forever with the initial choices?

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• Naming your website longname.com vs shortcatchy.net vs shortcatchy.info

  - by jskye

  I'm designing a website that will basically be a social network for sharing information. I have the domain $$$$d.net and the same domain $$$$d.info where $$$$ is a word (that runs into the d) pertaining to the purpose of the site . The .com of this domain was already taken, but they've got nothing showing. They only have a not reached google error showing ie. dont seem to be trying to sell it either. I also have the long name of the site $$$$------&&&&&&&&&.com where the words $$$$ and &&&&&&&&& would contribute relevant seo to the site. In fact the word $$$$------ would also if a one letter spelling mistake is recognised at all by google, which i doubt but am unsure about. But as a brandname the $$$$------ word still works relevantly. Which do you think is a better choice to use? The short catchy name with the .info for relevance to information The .net which is more familiar than .info but slightly less relevant maybe. (But i think net as in network still works cos as i said it will be a social networking site). The long, .com domain which has more SEO plus a pun albeit on a spelling mistake. I know its kind of a subjective question and also hard to answer without knowing the name (which I've obfuscated because I'm only in initial design stage) but nevertheless im interested in what some of you guys think.

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• Additional new material WebLogic Community 2013

  - by JuergenKress

  Load Balancing T3 Initial Context Retrieval for WebLogic using Oracle Traffic Director Demystifying WebLogic and Fusion Middleware Management WebLogic Server- Integrated & Optimized w/ Best of Breed Oracle Offerings to Turbo Charge your Applications Get a Bird’s-Eye View of IT Architecture: IT Strategies from Oracle IT Strategies from Oracle, a complimentary authorized library of guidelines and reference architectures, can help you put together a strong IT architecture that takes into account individual technology components as well as big-picture IT concepts and strategies. Read More. Deploying Oracle Application Development Framework Applications on Oracle Java Cloud Service and Oracle Database Cloud Service With the new Oracle Cloud environment you no longer have to maintain an Oracle WebLogic server or a database server of your own – you can instead use instances hosted on Oracle Cloud. More Oracle Application Development Framework Development with Eclipse Oracle Enterprise Pack for Eclipse now provides even more Oracle Application Development Framework tooling with each release. Check out this new tutorial on Oracle Enterprise Pack for Eclipse 12.1.1.2. Oracle WebLogic Devcast Series Join us for the March 28 Oracle WebLogic Devcast Webcast, “What to Expect from Maven on Oracle WebLogic,” featuring Pyounguk Cho, Oracle’s principal product manager. Learn what developers can expect when utilizing Apache Maven with Oracle WebLogic. Customer Webcasts: WebLogic Devcast Series – Register Leveraging Third-Party Libraries to Create and Deploy Applications to Oracle Cloud Oracle ADF: Tuning Application Module Pools and Connection Pools WebLogic Partner Community For regular information become a member in the WebLogic Partner Community please visit: http://www.oracle.com/partners/goto/wls-emea ( OPN account required). If you need support with your account please contact the Oracle Partner Business Center. Blog Twitter LinkedIn Mix Forum Wiki Technorati Tags: WebLogic,WebLogic Community,Oracle,OPN,Jürgen Kress

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• Changes to the LINQ-to-StreamInsight Dialect

  - by Roman Schindlauer

  In previous versions of StreamInsight (1.0 through 2.0), CepStream<> represents temporal streams of many varieties: Streams with ‘open’ inputs (e.g., those defined and composed over CepStream<T>.Create(string streamName) Streams with ‘partially bound’ inputs (e.g., those defined and composed over CepStream<T>.Create(Type adapterFactory, …)) Streams with fully bound inputs (e.g., those defined and composed over To*Stream – sequences or DQC) The stream may be embedded (where Server.Create is used) The stream may be remote (where Server.Connect is used) When adding support for new programming primitives in StreamInsight 2.1, we faced a choice: Add a fourth variety (use CepStream<> to represent streams that are bound the new programming model constructs), or introduce a separate type that represents temporal streams in the new user model. We opted for the latter. Introducing a new type has the effect of reducing the number of (confusing) runtime failures due to inappropriate uses of CepStream<> instances in the incorrect context. The new types are: IStreamable<>, which logically represents a temporal stream. IQStreamable<> : IStreamable<>, which represents a queryable temporal stream. Its relationship to IStreamable<> is analogous to the relationship of IQueryable<> to IEnumerable<>. The developer can compose temporal queries over remote stream sources using this type. The syntax of temporal queries composed over IQStreamable<> is mostly consistent with the syntax of our existing CepStream<>-based LINQ provider. However, we have taken the opportunity to refine certain aspects of the language surface. Differences are outlined below. Because 2.1 introduces new types to represent temporal queries, the changes outlined in this post do no impact existing StreamInsight applications using the existing types! SelectMany StreamInsight does not support the SelectMany operator in its usual form (which is analogous to SQL’s “CROSS APPLY” operator): static IEnumerable<R> SelectMany<T, R>(this IEnumerable<T> source, Func<T, IEnumerable<R>> collectionSelector) It instead uses SelectMany as a convenient syntactic representation of an inner join. The parameter to the selector function is thus unavailable. Because the parameter isn’t supported, its type in StreamInsight 1.0 – 2.0 wasn’t carefully scrutinized. Unfortunately, the type chosen for the parameter is nonsensical to LINQ programmers: static CepStream<R> SelectMany<T, R>(this CepStream<T> source, Expression<Func<CepStream<T>, CepStream<R>>> streamSelector) Using Unit as the type for the parameter accurately reflects the StreamInsight’s capabilities: static IQStreamable<R> SelectMany<T, R>(this IQStreamable<T> source, Expression<Func<Unit, IQStreamable<R>>> streamSelector) For queries that succeed – that is, queries that do not reference the stream selector parameter – there is no difference between the code written for the two overloads: from x in xs from y in ys select f(x, y) Top-K The Take operator used in StreamInsight causes confusion for LINQ programmers because it is applied to the (unbounded) stream rather than the (bounded) window, suggesting that the query as a whole will return k rows: (from win in xs.SnapshotWindow() from x in win orderby x.A select x.B).Take(k) The use of SelectMany is also unfortunate in this context because it implies the availability of the window parameter within the remainder of the comprehension. The following compiles but fails at runtime: (from win in xs.SnapshotWindow() from x in win orderby x.A select win).Take(k) The Take operator in 2.1 is applied to the window rather than the stream: Before After (from win in xs.SnapshotWindow() from x in win orderby x.A select x.B).Take(k) from win in xs.SnapshotWindow() from b in     (from x in win     orderby x.A     select x.B).Take(k) select b Multicast We are introducing an explicit multicast operator in order to preserve expression identity, which is important given the semantics about moving code to and from StreamInsight. This also better matches existing LINQ dialects, such as Reactive. This pattern enables expressing multicasting in two ways: Implicit Explicit var ys = from x in xs          where x.A > 1          select x; var zs = from y1 in ys          from y2 in ys.ShiftEventTime(_ => TimeSpan.FromSeconds(1))          select y1 + y2; var ys = from x in xs          where x.A > 1          select x; var zs = ys.Multicast(ys1 =>     from y1 in ys1     from y2 in ys1.ShiftEventTime(_ => TimeSpan.FromSeconds(1))     select y1 + y2; Notice the product translates an expression using implicit multicast into an expression using the explicit multicast operator. The user does not see this translation. Default window policies Only default window policies are supported in the new surface. Other policies can be simulated by using AlterEventLifetime. Before After xs.SnapshotWindow(     WindowInputPolicy.ClipToWindow,     SnapshotWindowInputPolicy.Clip) xs.SnapshotWindow() xs.TumblingWindow(     TimeSpan.FromSeconds(1),     HoppingWindowOutputPolicy.PointAlignToWindowEnd) xs.TumblingWindow(     TimeSpan.FromSeconds(1)) xs.TumblingWindow(     TimeSpan.FromSeconds(1),     HoppingWindowOutputPolicy.ClipToWindowEnd) Not supported … LeftAntiJoin Representation of LASJ as a correlated sub-query in the LINQ surface is problematic as the StreamInsight engine does not support correlated sub-queries (see discussion of SelectMany). The current syntax requires the introduction of an otherwise unsupported ‘IsEmpty()’ operator. As a result, the pattern is not discoverable and implies capabilities not present in the server. The direct representation of LASJ is used instead: Before After from x in xs where     (from y in ys     where x.A > y.B     select y).IsEmpty() select x xs.LeftAntiJoin(ys, (x, y) => x.A > y.B) from x in xs where     (from y in ys     where x.A == y.B     select y).IsEmpty() select x xs.LeftAntiJoin(ys, x => x.A, y => y.B) ApplyWithUnion The ApplyWithUnion methods have been deprecated since their signatures are redundant given the standard SelectMany overloads: Before After xs.GroupBy(x => x.A).ApplyWithUnion(gs => from win in gs.SnapshotWindow() select win.Count()) xs.GroupBy(x => x.A).SelectMany(     gs =>     from win in gs.SnapshotWindow()     select win.Count()) xs.GroupBy(x => x.A).ApplyWithUnion(gs => from win in gs.SnapshotWindow() select win.Count(), r => new { r.Key, Count = r.Payload }) from x in xs group x by x.A into gs from win in gs.SnapshotWindow() select new { gs.Key, Count = win.Count() } Alternate UDO syntax The representation of UDOs in the StreamInsight LINQ dialect confuses cardinalities. Based on the semantics of user-defined operators in StreamInsight, one would expect to construct queries in the following form: from win in xs.SnapshotWindow() from y in MyUdo(win) select y Instead, the UDO proxy method is referenced within a projection, and the (many) results returned by the user code are automatically flattened into a stream: from win in xs.SnapshotWindow() select MyUdo(win) The “many-or-one” confusion is exemplified by the following example that compiles but fails at runtime: from win in xs.SnapshotWindow() select MyUdo(win) + win.Count() The above query must fail because the UDO is in fact returning many values per window while the count aggregate is returning one. Original syntax New alternate syntax from win in xs.SnapshotWindow() select win.UdoProxy(1) from win in xs.SnapshotWindow() from y in win.UserDefinedOperator(() => new Udo(1)) select y -or- from win in xs.SnapshotWindow() from y in win.UdoMacro(1) select y Notice that this formulation also sidesteps the dynamic type pitfalls of the existing “proxy method” approach to UDOs, in which the type of the UDO implementation (TInput, TOuput) and the type of its constructor arguments (TConfig) need to align in a precise and non-obvious way with the argument and return types for the corresponding proxy method. UDSO syntax UDSO currently leverages the DataContractSerializer to clone initial state for logical instances of the user operator. Initial state will instead be described by an expression in the new LINQ surface. Before After xs.Scan(new Udso()) xs.Scan(() => new Udso()) Name changes ShiftEventTime => AlterEventStartTime: The alter event lifetime overload taking a new start time value has been renamed. CountByStartTimeWindow => CountWindow

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• Nivida driver install

  - by Adham

  tried black listing and every thing i could find on the internet used with root and alt+ctrl+f1 with no solution nvidia-installer log file '/var/log/nvidia-installer.log' creation time: Mon Jun 17 08:35:25 2013 installer version: 319.23 PATH: /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin nvidia-installer command line: ./nvidia-installer Using: nvidia-installer ncurses user interface -> License accepted. -> Installing NVIDIA driver version 319.23. -> Running distribution scripts executing: '/usr/lib/nvidia/pre-install'... -> done. -> The distribution-provided pre-install script failed! Continue installation anyway? (Answer: Yes) ERROR: The Nouveau kernel driver is currently in use by your system. This driver is incompatible with the NVIDIA driver, and must be disabled before proceeding. Please consult the NVIDIA driver README and your Linux distribution's documentation for details on how to correctly disable the Nouveau kernel driver. WARNING: One or more modprobe configuration files to disable Nouveau are already present at: /etc/modprobe.d/nvidia-installer-disable-nouveau.conf. Please be sure you have rebooted your system since these files were written. If you have rebooted, then Nouveau may be enabled for other reasons, such as being included in the system initial ramdisk or in your X configuration file. Please consult the NVIDIA driver README and your Linux distribution's documentation for details on how to correctly disable the Nouveau kernel driver. ERROR: Installation has failed. Please see the file '/var/log/nvidia-installer.log' for details. You may find suggestions on fixing installation problems in the README available on the Linux driver download page at www.nvidia.com.

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• Strange resizing of partition after reinstalling Ubuntu 14.04 64bit

  - by Mike

  I started with Windows 7 on 120GB SSD and Ubuntu 14.04 32bit installed on 60GB partition on separate 1TB HDD. I just did a fresh reinstall of 14.04 64bit on the 1TB HDD. In the installation set up process, I selected the second choice of "deleting Ubuntu 14.04 and all it's files,documents, photos etc and reinstalling" to what I figured would reinstall the 64bit OS on the already existing 60GB allocated partition. Instead, it reinstalled Ubuntu as 43.5 GB and created a separate 15.8 partition. So now it reads that my disk space for Ubuntu ( in settingsdetails) is 43.5GB (instead of the previous 60GB that my old 32bit had) The upside is I can now access my 1TB HDD from my toolbar(and all the files located on it) Before, I could only access that through Windows (I can also access the SSD too, but that was always the case) Both drives are mounted now. My initial reaction was to go into Windows 7 disk management delete the strange/new 15gb partitionextend the 43.5 to the unallocated space. But I'm not sure if this is necessary or would even work. My question is why did it create a 15gb partition shrinking my ubuntu disk space, and is it useful? I don't want wasted space, so before I go through all my set up of Ubuntu, should I change this. At this time my HDD reads as 43.5 partiton, 15.8 partition, and 874GB exfat32 (939GB total)

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• Interpolation between two 3D points?

  - by meds

  I'm working with some splines which define a path a character follows (you can see a gameplay video here to get a better understanding of what's going on: http://www.youtube.com/watch?v=BndobjOiZ6g). Basically the characters 'forward' look direction is set to the 'forward' direction of the spline and when players tilt their phone left and right the character is strafed along its 'right' coordinate. The issue with this is (rather obviously) in performance, interpolating over a spline to find the nearest position and tangent relative to the player is an incredibly costly operation. To get by this I cache a finite number of positions in what I call 'SplineDetails', the class is as follows: public class SplineDetails { public SplineDetails() { Forward = Vector3.forward; Position = Vector3.one * float.MaxValue; Alpha = -1; } public float Alpha; // [0,1] measured along length of spline where 0 is the initial point and 1 is the end point of the spline public Vector3 Position; // the point of the spline at this alpha public Vector3 Forward; // the forward tangent of the spline at this alpha } I populate this with say 30 coordinates and I can give a rough estimate of a coordinate and 'forward' based on a position past in. It's not as accurate but it's much faster. But now I'd like to make the system work better by estimating positions and 'forward' directions by interpolating between two of the cached points though I'm stuck trying to figure out some logic. My first problem is, how can I determine between which two points the object is? Given each point can be placed at different intervals along the spline it could mean that two points in front or behind the object can be closer to the object. The other problem is to figure out the proportion between the two paths it's between, i.e. if there is a point a at coordinate (0,0,0) and point b at coordinate (1,0,0) if the object is at position (0.5,0,0) then the result it should give is '0.5' (as it is equal distance away from point a and point b). That's a simple example, but what if the object is at coordinate (0.5,3,0) for example?

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• Ubuntu server 11.04 recognize only 1 core instead of 4

  - by Kreker

  I searched for other questions and googled a lot but I don't find a solution for solving this problem. Ubuntu Server 11.04 64bit installed on Dell Poweredge with Intel Xeon X5450. He only recognize 1 of the 4 cores I have. Tried to modify the GRUB config but didn't work. IN the machine BIOS I didn't find anything useful. CPU root@darwin:~# cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Xeon(R) CPU X5450 @ 3.00GHz stepping : 10 cpu MHz : 2992.180 cache size : 6144 KB physical id : 0 siblings : 1 core id : 0 cpu cores : 1 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 xsave lahf_lm dts tpr_shadow vnmi flexpriority bogomips : 5984.36 clflush size : 64 cache_alignment : 64 address sizes : 38 bits physical, 48 bits virtual power management: GRUB root@darwin:~# cat /etc/default/grub # If you change this file, run 'update-grub' afterwards to update # /boot/grub/grub.cfg. # For full documentation of the options in this file, see: # info -f grub -n 'Simple configuration' GRUB_DEFAULT=0 #GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=2 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="" GRUB_CMDLINE_LINUX="noapic nolapic" #was with acpi=off # Uncomment to enable BadRAM filtering, modify to suit your needs # This works with Linux (no patch required) and with any kernel that obtains # the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...) #GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef" # Uncomment to disable graphical terminal (grub-pc only) #GRUB_TERMINAL=console # The resolution used on graphical terminal # note that you can use only modes which your graphic card supports via VBE # you can see them in real GRUB with the command `vbeinfo' #GRUB_GFXMODE=640x480 # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux #GRUB_DISABLE_LINUX_UUID=true # Uncomment to disable generation of recovery mode menu entries #GRUB_DISABLE_RECOVERY="true" # Uncomment to get a beep at grub start #GRUB_INIT_TUNE="480 440 1" Complete dmesg Too long, posted on pastebin http://pastebin.com/bsKPBhzu

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• What determines which Javascript functions are blocking vs non-blocking?

  - by Sean

  I have been doing web-based Javascript (vanilla JS, jQuery, Backbone, etc.) for a few years now, and recently I've been doing some work with Node.js. It took me a while to get the hang of "non-blocking" programming, but I've now gotten used to using callbacks for IO operations and whatnot. I understand that Javascript is single-threaded by nature. I understand the concept of the Node "event queue". What I DON'T understand is what determines whether an individual javascript operation is "blocking" vs. "non-blocking". How do I know which operations I can depend on to produce an output synchronously for me to use in later code, and which ones I'll need to pass callbacks to so I can process the output after the initial operation has completed? Is there a list of Javascript functions somewhere that are asynchronous/non-blocking, and a list of ones that are synchronous/blocking? What is preventing my Javascript app from being one giant race condition? I know that operations that take a long time, like IO operations in Node and AJAX operations on the web, require them to be asynchronous and therefore use callbacks - but who is determining what qualifies as "a long time"? Is there some sort of trigger within these operations that removes them from the normal "event queue"? If not, what makes them different from simple operations like assigning values to variables or looping through arrays, which it seems we can depend on to finish in a synchronous manner? Perhaps I'm not even thinking of this correctly - hoping someone can set me straight. Thanks!

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