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  • XNA Moddable Game - Architecture Design and Reflection

    - by David K
    I've decided to embark on an XNA moddable game project of a simple rogue style. For all purposes of this question, I'm going to not be using a scripting engine, but rather allow modders to directly compile assemblies that are loaded by the game at run time. I know about the security problems this may raise. So in order to expose the moddable content, I have gone about creating a generic project in XNA called MyModel. This contains a number of interfaces that all inherit from IPlugin, such as IGameSystem, IRenderingSystem, IHud, IInputSystem etc. Then I've created another project called MyRogueModel. This references MyModel project, and holds interfaces such as IMonster, IPlayer, IDungeonGenerator, IInventorySystem. More rogue specific interfaces, but again, all interfaces in this project inherit from IPlugin. Then finally, I've created another project called MyRogueGame, that references both MyModel and MyRogueModel projects. This project will be the game that you run and play. Here I have put the actual implementation of the Monster, DungeonGenerator, InputSystem and RenderingSystem classes. This project will also scan the mods directory during run time and load any IPlugins it finds using reflection and override anything it finds from the default. For example if it finds a new implementation of the DungeonGenerator it will use that one instead. Now my question is, in order to get this far, I have effectively 2 projects that contain nothing but interfaces... which seems a little... strange ? For people to create mods for the game, I would give them both the MyModel and MyRogueModel assemblies in which they would reference. I'm not sure whether this is the right way to do it, but my reasoning goes as follows : If I write 1 input system, I can use it in any game I write. If I create 3 rogue like games, and a modder writes 1 rendering system, that modder could use the rendering system for all 3 games, because it all comes from the MyModel project. I come from a more web based C# role, so having empty interface projects doesn't seem wrong, its just something I haven't done before. Before I embark on something that might be crazy, I'd just like to know whether this is a foolish idea and whether there's a better (or established) design principle I should be following ?

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  • Which hosted chat solutions offer the following?

    - by David
    I am looking for a chat room solution similar to the one on StackExchange to facilitate more responsive communication between the contributors on Open-Org.com. My criteria are the following: No Flash (this rules out more than half) Full history (meaning that it is possible to access all previous conversation for future reference. Very customizable No ugly IRC stuff filling up the chat view (I do not want to see who joined an who left etc.) No private conversations possible (this is just not in the spirit of Open-org.com) A hosted solution with a reasonable price. These criteria are so different from this question, so this is not a duplicate question. The service which matches this the closest is Chatroll.com. However, at 199$ per month their prices are outrageous.

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  • Walmart's Mobile Self-Checkout

    - by David Dorf
    Reuters recently reported that Walmart was testing an iPhone-based self-checkout at a store near its headquarters.  Consumers scan items as they're placed in the physical basket, then the virtual basket is transferred to an existing self-checkout station where payment is tendered.  A very solid solution, but not exactly original. Before we go further, let's look at the possible cost savings for Walmart.  According to the article: Pushing more shoppers to scan their own items and make payments without the help of a cashier could save Wal-Mart millions of dollars, Chief Financial Officer Charles Holley said on March 7. The company spends about $12 million in cashier wages every second at its Walmart U.S. stores. Um, yeah. Using back-of-the-napkin math, I calculated Walmart's cashiers are making $157k per hour.  A more accurate statement would be saving $12M per year for each second saved on the average transaction time.  So if this self-checkout approach saves 2 seconds per transaction on average, Walmart would save $24M per year on labor.  Maybe.  Sometimes that savings will be used to do other tasks in the store, so it may not directly translate to less employees. When I saw this approach demonstrated in Sweden, there were a few differences, which may or may not be in Walmart's plans.  First, the consumers were identified based on their loyalty card.  In order to offset the inevitable shrink, retailers need to save on labor but also increase basket size, typically via in-aisle promotions.  As they scan items, retailers should target promos, and that's easier to do if you know some shopping history.  Last I checked, Walmart had no loyalty program. Second, at the self-checkout station consumers were randomly selected for an audit in which they must re-scan all the items just like you do at a typical self-checkout.  If you were found to be stealing, your ability to use the system can be revoked.  That's a tough one in the US, especially when the system goes wrong, either by mistake or by lying.  At least in my view, the Swedes are bit more trustworthy than the people of Walmart. So while I think the idea of mobile self-checkout has merit, perhaps its not right for Walmart.

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  • How do I create a third Person View using DXUTCamera in DX10?

    - by David
    I am creating a 3d flying game and using DXUTCamera for my view. I can get the camera to take on the characters position, But I would like to view my character in the 3rd person. Here is my code for first person view: //Put the camera on the object. D3DXVECTOR3 viewerPos; D3DXVECTOR3 lookAtThis; D3DXVECTOR3 up ( 5.0f, 1.0f, 0.0f ); D3DXVECTOR3 newUp; D3DXMATRIX matView; //Set the viewer's position to the position of the thing. viewerPos.x = character->x; viewerPos.y = character->y; viewerPos.z = character->z; // Create a new vector for the direction for the viewer to look character->setUpWorldMatrix(); D3DXVECTOR3 newDir, lookAtPoint; D3DXVec3TransformCoord(&newDir, &character->initVecDir, &character->matAllRotations); // set lookatpoint D3DXVec3Normalize(&lookAtPoint, &newDir); lookAtPoint.x += viewerPos.x; lookAtPoint.y += viewerPos.y; lookAtPoint.z += viewerPos.z; g_Camera.SetViewParams(&viewerPos, &lookAtPoint); So does anyone have an ideas how I can move the camera to the third person view? preferably timed so there is a smooth action in the camera movement. (I'm hoping I can just edit this code instead of bringing in another camera class)

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  • SharePoint 2010 Single Page Apps without a Master Page

    - by David Jacobus
    Originally posted on: http://geekswithblogs.net/djacobus/archive/2014/06/06/156827.aspxWell, maybe a stretch, but I am inclined to believe it is so.  I have been using  the JavaScript Client Object Model (JCSOM) for about 6 months now and I believe it can do about 80% of my job quickly without much fanfare.  When building sites in SharePoint no one wants the OOTB list views, etc. They want a custom look and feel!  I used to think in previous engagements that this would mean some custom server code or at least a data-form web part.   Since coming on-board in my current engagement, I have been forced because we don’t own the hosting site to come up with innovative ways to customize the UI of SharePoint.  We can push content via sandbox solutions and use JCSOM from within SharePoint Designer to do almost all customizations.  I have been using the following methodology to accomplish this: 1. Create an HTML file, which links CSS and JavaScript Files 2. Create and ASPX Web Part Page, Include a Content Editor Web Part and link to the HTML page created above.   So basically once it was done, I could copy , paste,  and rename those 4 items: CC, JS, HTML. ASPX and using MVVM just change the Model, View, and View-Model in the JavaScript file.  in about 5 minutes, I could create a completely new web part with SharePoint data.  Styling would take a little longer.  Some issues that would crop up: 1.  Multiple(s) of these web parts would not work well together on the same page (context). 2.  To separate the Web parts and context I would create a separate page for each web part and link them to a tabs layout via a Page Viewer web part or I frame.  Easy to do and not a problem but a big load problem as these web part pages even with minimal master had huge footprints.  (master page and page web part zones)   I kept thinking of my experience with SharePoint 2013 and apps!  The JavaScript was loaded from within the app, why can’t we do that in 2010 and skip the master page and web part zones. I thought at first, just link to sp.js but that didn’t work so I searched the web and found a link which did not work at all in my environment but helped me create a solution that would kudos to (Will). <!DOCTYPE html> <%@ Page %> <%@ Register Tagprefix="SharePoint" Namespace="Microsoft.SharePoint.WebControls" Assembly="Microsoft.SharePoint, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c" %> <%@ Import Namespace="Microsoft.SharePoint" %> <html> <head> <link rel="Stylesheet" type="text/css" href="../CSS/smoothness/jquery-ui-1.10.4.custom.min.css"> </head> <body > <form runat="server"> <!-- the following 5 js files are required to use CSOM --> <script src="/_layouts/1033/init.js" type="text/javascript" ></script> <script src="/_layouts/MicrosoftAjax.js" type="text/javascript" ></script> <script src="/_layouts/sp.core.js" type="text/javascript" ></script> <script src="/_layouts/sp.runtime.js" type="text/javascript" ></script> <script src="/_layouts/sp.js" type="text/javascript" ></script> <!-- include your app code --> <script src="../scripts/jquery-1.9.1.js" type="text/javascript" ></script> <script src="../Scripts/jquery-ui-1.10.3.custom.min.js" type="text/javascript"></script> <script src="../scripts/App.js" type="text/javascript" ></script> <div ID="Wrapper"> </div> <SharePoint:FormDigest ID="FormDigest1" runat="server"></SharePoint:FormDigest> </form> </body> </html> Notice that I have the scripts loaded within the body! I discovered this by accident in trying to get Will’s solution to work, it made this work just like normal JCSOM from the master page.  I am sure there are other ways to do this, but I am a full time developer, so I’ll let someone else investigate the alternatives.  I have an example page showing an Announcements list as a Booklet which is a JQuery Plug-In.  Here is the page source notice the footprint is light.   <!DOCTYPE html> <html> <head> <link rel="Stylesheet" type="text/css" href="../CSS/smoothness/jquery-ui-1.10.4.custom.min.css"> <link href="../CSS/jquery.booklet.latest.css" type="text/css" rel="stylesheet" media="screen, projection, tv" /> <link href="../CSS/bookletannouncement.css" type="text/css" rel="stylesheet" media="screen, projection, tv" /> </head> <body > <form name="ctl00" method="post" action="BookletAnnouncements2.aspx" onsubmit="javascript:return WebForm_OnSubmit();" id="ctl00"> <div> <input type="hidden" name="__REQUESTDIGEST" id="__REQUESTDIGEST" value="0x3384922A8349572E3D76DC68A3F7A0984CEC14CB9669817CCA584681B54417F7FDD579F940335DCEC95CFFAC78ADDD60420F7AA82F60A8BC1BB4B9B9A57F9309,06 Jun 2014 14:13:27 -0000" /> <input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwUBMGRk20t+bh/NWY1sZwphwb24pIxjUbo=" /> </div> <script type="text/javascript"> //<![CDATA[ var g_presenceEnabled = true;var _fV4UI=true;var _spPageContextInfo = {webServerRelativeUrl: "\u002fsites\u002fDemo50\u002fTeamSite", webLanguage: 1033, currentLanguage: 1033, webUIVersion:4,pageListId:"{ee707b5f-e246-4246-9e55-8db11d09a8cb}",pageItemId:167,userId:1, alertsEnabled:false, siteServerRelativeUrl: "\u002fsites\u002fdemo50", allowSilverlightPrompt:'True'};//]]> </script> <script type="text/javascript" src="/_layouts/1033/init.js?rev=lEi61hsCxcBAfvfQNZA%2FsQ%3D%3D"></script> <script type="text/javascript"> //<![CDATA[ function WebForm_OnSubmit() { UpdateFormDigest('\u002fsites\u002fDemo50\u002fTeamSite', 1440000); return true; } //]]> </script> <!-- the following 5 js files are required to use CSOM --> <script src="/_layouts/1033/init.js"></script> <script src="/_layouts/MicrosoftAjax.js"></script> <script src="/_layouts/sp.core.js"></script> <script src="/_layouts/sp.runtime.js"></script> <script src="/_layouts/sp.js"></script> <!-- include your app code --> <script src="../scripts/jquery-1.9.1.js"></script> <script src="../Scripts/jquery-ui-1.10.3.custom.min.js" type="text/javascript"></script> <script src="../Scripts/jquery.easing.1.3.js"></script> <script src="../Scripts/jquery.booklet.latest.min.js"></script> <script src="../scripts/Announcementsbooklet.js"></script> <div ID="Accord"> </div> <script type="text/javascript"> //<![CDATA[ var _spFormDigestRefreshInterval = 1440000;//]]> </script> </form> </body> </html> Here is the source to make the booklet work: ExecuteOrDelayUntilScriptLoaded(retrieveListItems, "sp.js"); var context; var collListItem; var web; var listRootFolder; var oList; //retieve the list items from the host web function retrieveListItems() { context = SP.ClientContext.get_current(); web = context.get_web(); oList = context.get_web().get_lists().getByTitle('Announcements'); var camlQuery = new SP.CamlQuery(); camlQuery.set_viewXml('<View><RowLimit>10</RowLimit></View>'); collListItem = oList.getItems(camlQuery); listRootFolder = oList.get_rootFolder(); context.load(listRootFolder); context.load(web); context.load(collListItem); context.executeQueryAsync(onQuerySucceeded, onQueryFailed); } //Model object var Dev = function (id, title, body, expires, url) { var self = this; self.ID = id; self.Title = title; self.Body = body; self.Expires = expires; self.Url = url; } //View model var DevVM = new ListViewModel() function ListViewModel() { var self = this; self.items = new Array(); } function onQuerySucceeded(sender, args) { var listItemEnumerator = collListItem.getEnumerator(); while (listItemEnumerator.moveNext()) { var oListItem = listItemEnumerator.get_current(); var javaDate = oListItem.get_item('Expires'); var fmtExpires = javaDate.format('dd MMM yyyy'); var url = ""; var goodUrl = oListItem.get_item('Url'); if (goodUrl == null) { url = web.get_serverRelativeUrl() + "/Lists/Announcements/EditForm.aspx?ID=" + oListItem.get_item('ID'); } else { url = web.get_serverRelativeUrl() + oListItem.get_item('Url') } DevVM.items.push(new Dev(oListItem.get_item('ID'), oListItem.get_item('Title'), oListItem.get_item('Body'), fmtExpires, url)); } $.each(DevVM.items, function (index) { $("#Accord").append(createAccordNode(DevVM.items[index].Title, DevVM.items[index].Body, " Expires: " + DevVM.items[index].Expires, DevVM.items[index].Url)); }); $("#Accord").booklet(); } function createAccordNode(title, body, expires, url) { return ( $("<div><h3>" + title + "</h3><p><span class='titlespan'><a href='" + url + "'>" + title + "</a></span><span class='dicussionspan'>" + body + "</span><span class='expiresspan'>" + expires + "</span></p></div>") ); } function onQueryFailed(sender, args) { alert('Request failed. ' + args.get_message() + '\n' + args.get_stackTrace()); } The idea behind this post is that this could be used to: 1.   Create landing pages that are very un-SharePoint like! 2.   Make lightweight pages that could be used in page viewer web part or I Frame. 3.  Utilize Deep Zoom Composer and Sea-Dragon/or Silver light I will be using this for much of my development work!

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  • What features of old computers helped you learn to be a better programmer?

    - by David Cary
    What features of old computers helped you learn to be a better programmer -- but don't seem to be available on new computers? I imagine that, while educational, you are really glad some features are gone, such as programs ran so slowly that I could almost see each pixel being plotted, so I got a visceral feel for the effect of various optimizations. I imagine other features you may be a little nostalgic for, such as I could turn on the computer, and write a short program that printed "Hello, World" on the printer, before ever "booting" a "disk". (I'm hoping that this is constructive enough to avoid the fate of the " What have we lost from computers 20 years ago ?" question).

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  • How do I customize Alt+Tab behaviour?

    - by David Oneill
    GOAL: I would like to make the little menu that pops up when I press Alt+Tab to gain the ability to jump to a particular window by pointing my mouse at one of the icons. This is the behaviour that my Mac OSX laptop has. The Situation I use Xfce, with the default windows manager (XFwm). I currently have Ubuntu 10.04 and 11.10, although I plan on updating both to XUbuntu 12.04 once the dust settles (probably mid-may?). (Clarification, for my current setup, I installed Ubuntu, then added xfce manually after the fact). So, a series of related questions. How do I set this up? (If this is not possible, please answer the following questions to help me learn) Is the Alt+Tab a function of the desktop environment, or the windows manager, or some other piece? (IE if I switch to using some other tool, could I potentially get this) Are there any customizations that are available either from settings or add-on applications that would allow me to change the behaviour of that menu?

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  • Personalized Pricing

    - by David Dorf
    In past postings I've spent a fair amount of time talking about targeted promotions.  Using a complete view of the customer that includes purchase history, location history, and psychographics gleaned from social media, we can select the offer with the greatest chance of redemption.  This is done to influence shopping behavior, which might be introducing the consumer to a new product line, increasing their basket size, increasing frequency of purchases, etc. Safeway seems to be taking a slightly different approach with their personalized pricing.  In additional to offering electronic coupons and club card offers, they are also providing a personalized price for certain items based on purchase history.  So when Sally want to shop at Safeway, she first checks the "Just for U" website for three types of deals.  She starts by selecting manufacturer coupons to load into her loyalty card, then she checks the Club Card for offers like "buy one get one free." The third step is the interesting one.  Safeway will set a particular lower price for Sally good for 90 days on items she buys often.  Clearly this isn't enforcing a new behavior but rather instilling loyalty.  I would love to know exactly how they are determining the personalized price.  Of course bargain hunters can still stack the three offers so they can, for example, get their $4.99 Oatmeal for $0.72. I like this particular question and answer from their website's FAQ: My offers are not that great. Can I tell you what offers I need? That's a good idea. That functionality is not currently available, but we appreciate your input and are constantly improving our just for U program. Stay tuned for exciting enhancements! I suppose if Safeway is tracking all the purchases, they can easily determine whether the customer if profitable.  As long as the customer stays profitable, why not let them determine a few offers themselves?  Food for thought.

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  • What's the best way to version CSS and JS URLs?

    - by David Eyk
    As per Yahoo's much-ballyhooed Best Practices for Speeding Up Your Site, we serve up static content from a CDN using far-future cache expiration headers. Of course, we need to occasionally update these "static" files, so we currently add an infix version as part of the filename (based on the SHA1 sum of the file contents). Thus: styles.min.css Becomes: styles.min.abcd1234.css However, managing the versioned files can become tedious, and I was wondering if a GET argument notation might be cleaner and better: styles.min.css?v=abcd1234 Which do you use, and why? Are there browser- or proxy/cache-related considerations that I should consider?

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  • Google Goals process not working through similarly named pages

    - by David
    Well, I'm at a loss. I've ensured that my tracking script is in etc etc, and I've set up my goal and funnel path, but only the first step is ever being shown on the funnel. Goal URL: /checkout/checkoutComplete/ Type: Head Match ... but should this be /checkout/checkoutComplete/(.*) and set to regex rather because there are parameters after the main part of the URL (I thought that's what head match was for) Step 1: /checkout/ <-- required Step 2: /checkout/confirm/ both the above are valid and correct URLs for my domain. But for some reason, the funnel visualization shows entries into the first step, then an exits count that matches the entry count, including /checkout/confirm - but it doesn't go on to the next step! Perhaps I'm doing something obviously wrong...but I can't quite see it? Also, semi-related questions. Making a change to the funnel, does it only affect new incoming data? And how often does it update? Thanks in advance for your help.

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  • no such partition, grub rescue

    - by David
    I am currently dual booting Win7 and Ubuntu. I created a new partition, on my c drive, to install windows 8 on (i did not want to do the upgrade). I inserted the windows 8 cd and restarted my computer. no such partition/ grub rescue is all that comes up now. I loaded ubuntu from disk and did boot-repair. It did not solve my problem but I got the following output Please let me know if anyone can fix this. I am lost.

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  • Oracle OpenWorld Call for MDM Papers

    - by david.butler(at)oracle.com
    As the MDM Track owner, I would like to invite everyone to respond to the Oracle OpenWorld (October 2-6, Moscone Center, San Francisco) Call for Papers (https://oracleus.wingateweb.com/portal/cfp/ ). The Call for Papers is open now through Sunday, March 27. This is an outstanding opportunity for organizations familiar with MDM to tell their story to a very large, knowledgeable and intensely interested community. Opportunities for feedback and networking abound.  I would love to see MDM papers on: business drivers; business benefits; quantified ROI stories; business process optimization; implementation styles; implementation lessons learned; using master data as a service; data governance best practices; end-to-end data quality experiences; support for SOA; Chart of Accounts issues fixed; how to leverage reference data; improving EPM and/or BI across the board; operationalizing a data warehouse; support for cloud computing; compliance success stories; architecture, scalability, and mixed workload RAC platform performance examples; industry specific value propositions (Financial Services; Retail, Telecom; Manufacturing, High Tech Manufacturing, Public Sector, Health Care, …); and line of business specific value propositions (CRM, ERP, PLM, SCM, …); etc. In fact, given that MDM positively impacts all areas of operations and analytics, there are no limits to the ideas you may have for an OpenWorld presentation. When you follow the submission process, be sure to use “Master Data Management” for either the Primary or Optional track. Add “Master Data Management” as an Optional track if you are adding MDM content to a presentation on one of the following tracks: Agile; Customer Relationship Management, Oracle E-Business Suite, Product Lifecycle Management, Siebel, Sourcing and Procurement, Supply Chain Management, or one of the 18 available industry tracks. If Cloud Computing is included, please add “Cloud Computing” as a Cross-Stream Track. And don’t forget to make “MDM” a Tag, along with Business Intelligence, Cloud, CRM, Data Integration, Data Migration, Data Warehousing, EPM, or Service-Oriented Architecture whenever your content includes these items. I will personally review each submission. I hope you all keep me very busy over the next few weeks.

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  • CAMeditor v1.9 &ndash; thoughts and reflections

    - by david.webber(at)oracle.com
    We recently published the latest iteration of the CAMeditor tool on Sourceforge.net including more enhancements to the NIEM capabilities. This release represented an incremental improvement over the prior version with mostly bug fixes and patches. We’re now working on the full v2.0 release which will feature substantial improvements and new features in practically all areas.  Most importantly we are improving the dictionary handling and providing the ability to visually design new exchange schema directly from dictionary sets of components. In addition we are doing some interim release work on 1.9.x with patches and enhancements particularly to support running on Ubuntu and non-Windows platforms. And we are also providing an Ant script based deployment for the CAMV validation engine so you can do unit testing of batches of templates and XML instance samples using command line scripts. More updates will be forthcoming as we make early release versions available for testing purposes.

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  • How to code Time Stop or Bullet Time in a game?

    - by David Miler
    I am developing a single-player RPG platformer in XNA 4.0. I would like to add an ability that would make the time "stop" or slow down, and have only the player character move at the original speed(similar to the Time Stop spell from the Baldur's Gate series). I am not looking for an exact implementation, rather some general ideas and design-patterns. EDIT: Thanks all for the great input. I have come up with the following solution public void Update(GameTime gameTime) { GameTime newGameTime = new GameTime(gameTime.TotalGameTime, new TimeSpan(gameTime.ElapsedGameTime.Ticks / DESIRED_TIME_MODIFIER)); gameTime = newGameTime; or something along these lines. This way I can set a different time for the player component and different for the rest. It certainly is not universal enough to work for a game where warping time like this would be a central element, but I hope it should work for this case. I kinda dislike the fact that it litters the main Update loop, but it certainly is the easiest way to implement it. I guess that is essentialy the same as tesselode suggested, so I'm going to give him the green tick :)

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  • Wordpress Multisite and Google Analytics in subfolders with mapped domains

    - by David
    I have a wordpress multisite with sub folders. The site's subfolders are mapped to domains, which are set to primary. I'm using the 'Google Analytics Multisite Async' code to track things. From what I can see it's tracking the sites fine (getting page hits for each site in google analytics) baring the original site in the Multisite which in content overview lists domains then the amount of traffic it's getting along with the orginal domains traffic. I don't want to track any other traffic for my orginal site than what goes to that. i.e. I don't want it tracking my other sites in multi-site. e.g. domain1.com is my orginal and I have lots of other sites in the multisite lets say domain2.com, domain3.com. In content overview in Analytics it's listing say domain2.com as content. Can I tell it to filter these out some how either in Analytics or within WordPress? Hopefully explained that clearly!

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  • Ubuntu scrollbars don't render on Cygwin X server

    - by David M. Karr
    I have an ubuntu 12.0.4 desktop. I have a Win7 laptop running Cygwin. I can display windows from the Ubuntu box on the Win7 laptop using the Cygwin X server, but the window is somewhat "degraded". Specifically, scrollbars are not rendering properly. I've used Ubuntu before, but this is the first time I've seen these odd scrollbar popups that are used in 12.04. I'm guessing the Cygwin X server is having trouble rendering that for some reason. In the Cygwin view, I see the slightly thicker vertical bar, but when I hover the mouse over it, nothing happens. I'd really prefer to get conventional scrollbars. Can I configure Ubuntu 12.0.4 to do this, which might result in Cygwin being able to display them?

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  • Creating a bootable USB recovery drive to be used by someone who isn't computer savvy

    - by David
    I am looking for a way to prepare an image of an Ubuntu machine which would be bootable and installable in the easiest way possible. I'm actually preparing an Ubuntu machine for someone living far, and not computer savvy. If he ever has troubles with his installation, he could just put a USB drive in, boot the machine and everything would be resetted for him. I know there are many methods of creating/loading an image of a drive, but the ones I've found so far have complicated menus with several options to choose from, etc. Ideally, perhaps only asking a Yes/No question such as "Would you like to reinstall?" would be great. Does such a tool exist? Thank you in advance!

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  • JavaOne - Java SE Embedded Booth - Pactron Java Programmable Automation Controller (JPAC)

    - by David Clack
    Hi All, So at the last JavaOne we talked about developing a Java powered Programmable Automation Controller (JPAC) with our partner Pactron in Santa Clara. We actually demoed it running first at the Embedded Show in Germany this March. JPAC is based on a Marvell 88F6282 Kirkwood ARM SOC, we partnered with Hilsher from just outside Frankfurt, Germany for the mini pci ProfiBus controllers, Revolution Robotics from Corvallis, Oregon wrote the Java SE Embedded for ARM to Hilscher Linux driver interface. Revolution Robotics also designed the HTML5 application that runs on a Marvell ARM tablet to actually send and receive commands via ProfiBus to a slave device. We will have the system running in our booth at JavaOne this year, come take a look. If you are registered at JavaOne you can come over to the Java Embedded @ JavaOne for $100 Come see us in booth 5605 See you there Dave

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  • Adding tolerance to a point in polygon test

    - by David Gouveia
    I've been using this method which was taken from Game Coding Complete to detect whether a point is inside of a polygon. It works in almost every case, but is failing on a few edge cases, and I can't figure out the reason. For example, given a polygon with vertices at (0,0) (0,100) and (100,100), the algorithm is returning: True for any point strictly inside the polygon False for any of the vertices False for (0, 50) which lies on one of the edges of the polygon True (?) for (50,50) which is also on one of the edges of the polygon I'd actually like to relax the algorithm so that it returns true in all of these cases. In other words, it should return true for points that are strictly inside, for the vertices themselves, and for points on the edges of the polygon. If possible I'd also like to give it enough tolerance so that it always tend towards "true" in face of floating point fluctuations. For example, I have another method, that given a line segment and a point, returns the closest location on the line segment to the given point. Currently, given any point outside the polygon and one of its edges, there are cases where the result is categorized as being inside by the method above, while other points are considered outside. I'd like to give it enough tolerance so that it always returns true in this situation. The way I've currently solved the problem is an hack, which consists of using an external library to inflate the polygon by a few pixels, and performing the tests on the inflated polygon, but I'd really like to replace this with a proper solution.

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  • From Transactions To Engagement

    - by David Dorf
    I've mentioned in the past that Oracle has invested quite a bit in acquiring social companies to build out its Social Relationship Management suite.  The concept is to shift away from transactions and towards engagement.  Social media represents a great opportunity to engage with customers, learn what they want, and personalize the shopping experience for them. I look at SRM as the bridge between traditional CRM and CX.  If you're looking for ideas, check out Five Social Retailing Suggestions and Social Analytics and the Customer.  There are lots of ways to leverage social media to enhance the customer experience and thus drive more sales. My friends over at 8th Bridge have just released their Social IQ report in which they rate retailers on their social capabilities.  They also produced a nice infographic so you can consume the data quickly, but I'd still encourage you to download the full report. Retailers interested in upping their SRM abilities should definitely stop by the Oracle booth at NRF in January.

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  • Take care to unhook Anonymous Delegates

    - by David Vallens
    Anonymous delegates are great, they elimiante the need for lots of small classes that just pass values around, however care needs to be taken when using them, as they are not automatically unhooked when the function you created them in returns. In fact after it returns there is no way to unhook them. Consider the following code.   using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Diagnostics; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { SimpleEventSource t = new SimpleEventSource(); t.FireEvent(); FunctionWithAnonymousDelegate(t); t.FireEvent(); } private static void FunctionWithAnonymousDelegate(SimpleEventSource t) { t.MyEvent += delegate(object sender, EventArgs args) { Debug.WriteLine("Anonymous delegate called"); }; t.FireEvent(); } } public class SimpleEventSource { public event EventHandler MyEvent; public void FireEvent() { if (MyEvent == null) { Debug.WriteLine("Attempting to fire event - but no ones listening"); } else { Debug.WriteLine("Firing event"); MyEvent(this, EventArgs.Empty); } } } } If you expected the anonymous delegates do die with the function that created it then you would expect the output Attempting to fire event - but no ones listeningFiring eventAnonymous delegate calledAttempting to fire event - but no ones listening However what you actually get is Attempting to fire event - but no ones listeningFiring eventAnonymous delegate calledFiring eventAnonymous delegate called In my example the issue is just slowing things down, but if your delegate modifies objects, then you could end up with dificult to diagnose bugs. A solution to this problem is to unhook the delegate within the function var myDelegate = delegate(){Console.WriteLine("I did it!");}; MyEvent += myDelegate; // .... later MyEvent -= myDelegate;

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  • Ubuntu 12.04 desktop crash [closed]

    - by David Mannock
    12.04 is stable under a light load, but not under intensive use of Gaussian 09 vB1. Looks like a heating issue, but psensor says that all is well on 32-cores @56C. Similar results for 64 cores. Machine shuts down after 2-3h. Syslog shows shut down. Whoopsie crash reporter sends in report. After 259 updates on the weekend, I am left wondering what the heck is wrong with this release? My answer would be "EVERYTHING!". Can someone help me do some systematic checks on this OS and hardware.

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  • Bitmap Font Displays in Center Always Without Coding it Manually (Fix Coordinate Problem onText)

    - by David Dimalanta
    Is there a way on how to stay the texts in center without manually coding it or something, especially when making an update? I'm making a display for the highest score. Let's say that the score is 9. However, if the score is 9,999,999, the text displays still only at the fixed X and Y coordinate. Is there really a way to stay the text in center especially when there is changes when a player beats the new world record? Here's my code inside Sprite Batch: font.setScale(1.5f); font.draw(batch, "HIGHEST SCORE:", (900/10)*1 + 60, (1280/16)*10); font.draw(batch, "" + 9999999 + "", (900/10)*4, (1280/16)*8); batch.draw(grid_guide, 0, 0, 900, 1280); // --> For testing purpose only. // Where 9999999 is a new record score for example. Here's the image shown as example. I add it some red grid so that I could check if the display of score when updated will always display on center no matter how many digits takes place in. However, it is fixed, so I have to figure it out how to display it automatically on center regardless of the number of digits while updating for the new highscore. I have used the LibGDX preferences very well though to save and load records for the highscore.

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  • Advertising Campaign Bidding Network

    - by David
    I hope this is the correct stackexchange to post on. Seems to most relevant. I'm looking for more ways to monetize my site. I'm already using the usual Google Adsense, tradedoublers, ad networks, etc. What I want to know, is if anyone knows of a service/network out there (similar to tradedoubler), which allows you to accept (or bid) on campaigns (primarily CPM based). For example: I log in, I get a list of advertising campaigns that are available and the prices they are willing to pay or I can put a bid in with imp count and cpm rate. I'm looking for something ideally europe or UK based, but im open to others. Thanks!

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  • What is the best C++ interview question?

    - by David Thielen
    If you could ask a C++ programmer one question to measure their C++ skills, what would it be? The question I think is best is: Can you call "delete this;" inside a member function? (I put this as a link so you can think it through first, then go to The Best C++ Interview Question – Ever! to see the correct answer.) I don't ask this because I expect most people to know the answer. If they did it would not be that useful a question. I ask to see if they can work their way to the correct answer and how they do so.

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