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• Is there a way to track data structure dependencies from the database, through the tiers, all the way out to a web page?

  - by Sean Mickey

  When we design applications, we generally end up with the same tiered sets of data structures: A persistent data structure that is described using DDL and implemented as RDBMS tables and columns. A set of domain objects that consist primarily of data structures, usually combined with business-rule level logic, that are implemented in a programming language such as Java. A set of service layer interfaces that directly support use case implementations (which use the domain data structures as parameters), implemented as EJBs or something equivalent in another programming language. UI screens that allow users to C reate, R etrieve, U pdate, and (maybe) D elete all manner of data structures and graphs of data structures, with numerous screens and with multiple UI widgets, all structured to support the same data structures. But if you want to change the data structures in any of these tiers, it always seems extremely difficult to assess the impact(s) the change will have across the application. UML can help, but tracing through diagram after diagram is not a real solution to this problem. The best I have ever seen was a homespun data tracking spreadsheet document that listed all of the data structures and walked the relationships from tier-to-tier. Is there a tool or accepted approach that makes it easy to identify a data structure in any tier and easily obtain a list of all dependent: database table and column data structures domain object data structures service layer interface methods and parameter data structures screen & UI component data structures

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• "exception at 0x53C227FF (msvcr110d.dll)" with SOIL library

  - by Sean M.

  I'm creating a game in C++ using OpenGL, and decided to go with the SOIL library for image loading, as I have used it in the past to great effect. The problem is, in my newest game, trying to load an image with SOIL throws the following runtime error: This error points to this part: // SOIL.c int query_NPOT_capability( void ) { /* check for the capability */ if( has_NPOT_capability == SOIL_CAPABILITY_UNKNOWN ) { /* we haven't yet checked for the capability, do so */ if( (NULL == strstr( (char const*)glGetString( GL_EXTENSIONS ), "GL_ARB_texture_non_power_of_two" ) ) ) //############ it points here ############// { /* not there, flag the failure */ has_NPOT_capability = SOIL_CAPABILITY_NONE; } else { /* it's there! */ has_NPOT_capability = SOIL_CAPABILITY_PRESENT; } } /* let the user know if we can do non-power-of-two textures or not */ return has_NPOT_capability; } Since it points to the line where SOIL tries to access the OpenGL extensions, I think that for some reason SOIL is trying to load the texture before an OpenGL context is created. The problem is, I've gone through the entire solution, and there is only one place where SOIL has to load a texture, and it happens long after the OpenGL context is created. This is the part where it loads the texture... //Init glfw if (!glfwInit()) { fprintf(stderr, "GLFW Initialization has failed!\n"); exit(EXIT_FAILURE); } printf("GLFW Initialized.\n"); //Process the command line arguments processCmdArgs(argc, argv); //Create the window glfwWindowHint(GLFW_SAMPLES, g_aaSamples); glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3); glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 2); g_mainWindow = glfwCreateWindow(g_screenWidth, g_screenHeight, "Voxel Shipyard", g_fullScreen ? glfwGetPrimaryMonitor() : nullptr, nullptr); if (!g_mainWindow) { fprintf(stderr, "Could not create GLFW window!\n"); closeOGL(); exit(EXIT_FAILURE); } glfwMakeContextCurrent(g_mainWindow); printf("Window and OpenGL rendering context created.\n"); //Create the internal rendering components prepareScreen(); //Init glew glewExperimental = GL_TRUE; int err = glewInit(); if (err != GLEW_OK) { fprintf(stderr, "GLEW initialization failed!\n"); fprintf(stderr, "%s\n", glewGetErrorString(err)); closeOGL(); exit(EXIT_FAILURE); } printf("GLEW initialized.\n"); <-- Sucessfully creates an OpenGL context //Initialize the app g_app = new App(); g_app->PreInit(); g_app->Init(); g_app->PostInit(); <-- Loads the texture (after the context is created) ...and debug printing to the console CONFIRMS that the OpenGL context was created before the texture loading was attempted. So my question is if anyone is familiar with this specific error, or knows if there is a specific instance as to why SOIL would think OpenGL isn't initialized yet.

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• Visual Studio 2008 Crashes When Adding Custom Pipeline Components to Toolbox

  - by Sean Feldman

  I have run into this issue trying to add custom pipeline component to toolbox. The only way (I know about) to add a custom pipeline component to a customized pipeline is using the visual designer. In order to do that you have to have components on toolbox. This was a bit frustrating. Google has brought one result which was exactly what I needed. One of the comments had another link, to the similar issue, but this time with a different title: Hotfix for BizTalk 2009 and Visual Studio 2008. I followed the link, installed hotfix, and it worked. Oh, yes, you have to reboot your machine for hotfix to work completely (this is where I spent some time pulling my hair out and asking why hotfix didn’t work?!). Once this is done, you are good to go. Among other things, this hotfix deals with BizTalk project references to each other and items not being updated (like distinguished fields in schemas project not reflected in orchestrations project). Here’s the full list: * The orchestrations in the referenced BizTalk project may show compiler warnings. * The changes that are made to the referenced BizTalk project are not propagated on to the referencing project. * When you edit the orchestrations of the referenced project, XLANG errors are thrown. These errors may disappear after the orchestrations are saved and recompiled. * After you deploy the referencing project, the local copies of the referenced project’s binaries are deleted. * After you deploy the referencing project, various errors or warnings occur in Orchestration Designer.

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• /users/tags should contain scores

  - by Sean Patrick Floyd

  I am implementing some simple JavaScript/bookmarklet based apps that show some reputation info, including the score in the User's top tags (roughly based on this previous bookmarklet of mine). Now I can get a user's top tags (using the API), and I can also get the per-tag score if the user is logged in, by dynamically parsing the tag's top users page. But it costs me one AJAX request per tag and I have to download 10+k to extract a single numeric value. It would save a lot of traffic if the tags in <api>/users/<userid>/tags had a score field. The data seems to be there, after all the top users pages use it, so it would just be a question of exposing the data. Suggested structure: "tags": [ { "name": { "description": "name of the tag", "values": "string", "optional": false, "suggested_buffer_size": 25 }, "score": { "description": "tag score, sum of up votes for answers on non-wiki questions", "values": "32-bit signed integer", "optional": false }, "count": { "description": "tag count, exact meaning depends on context", "values": "32-bit signed integer", "optional": false }, "restricted_to": { "description": "user types that can make use of this tag, lack of this field indicates it is useable by all", "values": "one of anonymous, unregistered, registered, or moderator", "optional": true }, "fulfills_required": { "description": "indicates whether this tag is one of those that is required to be on a post", "values": "boolean", "optional": false }, "user_id": { "description": "user associated with this tag, depends on context", "values": "32-bit signed integer", "optional": true } } ]

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• dual boot Windows 7 and Ubuntu 11.04, black screen when loading Windows

  - by Sean

  I am proficient with Windows and not so much with Linux. Here is my story: Original system came with Windows 7, got openSUSE installed on the second hard drive, and dual boot for this setup worked fine. Wanted to switch to Windows 7 and Ubuntu 11.04 dual boot so I did a Windows system recovery and it appeared to give me back a fresh Windows 7 install. I then go to install Ubuntu 11.04 and the installer informs me I have multiple operating systems already installed. I go to the advanced partitioning option and sure enough Windows 7 is on /sda while openSUSE is still on /sdb. From here I followed this guide (How to dual-boot Linux and Ubuntu with two hard drives) after I had deleted all the openSUSE partitions on /sdb through the Allocate Drive Space tab of the installer. I make the /boot, swap, /, and /home partitions and set the GRUB into the MBR of the second disk (/dev/sdb). Everything installs fine. I reboot, Windows loads automatically, install EasyBCD and add an entry for Ubuntu into the Windows Boot Manager while assigning the type as GRUB2. Reboot the system and it now shows dual booting options for both Windows and Ubuntu. Problem is: while I can use Ubuntu fine when I try to boot into Windows it just gives me a black screen and after a little while the fans start running crazy. If I restart the computer I will sometimes get the message that my system was put into hibernation mode because the temperature got too high (90C) which I presume is in accordance with the fans going crazy. I have linked the output from the Boot Info Script below, any suggestions on how to fix this issue would be greatly appreciated! UPDATED SCRIPT OUTPUT Boot Info Script output: http://paste.ubuntu.com/682152/

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• Reminder: True WCF Asynchronous Operation

  - by Sean Feldman

  A true asynchronous service operation is not the one that returns void, but the one that is marked as IsOneWay=true. Without this, client will always wait for valid response from server, blocking execution. Possible work-around is to generate asynchronous methods and subscribe to Completed event, but then it’s a pseudo asynchronous. Real fire-and-forget is with one way operations.

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• Reminder: True WCF Asynchronous Operation

  - by Sean Feldman

  A true asynchronous service operation is not the one that returns void, but the one that is marked as IsOneWay=true using BeginX/EndX asynchronous operations (thanks Krzysztof). To support this sort of fire-and-forget invocation, Windows Communication Foundation offers one-way operations. After the client issues the call, Windows Communication Foundation generates a request message, but no correlated reply message will ever return to the client. As a result, one-way operations can't return values, and any exception thrown on the service side will not make its way to the client. One-way calls do not equate to asynchronous calls. When one-way calls reach the service, they may not be dispatched all at once and may be queued up on the service side to be dispatched one at a time, all according to the service configured concurrency mode behavior and session mode. How many messages (whether one-way or request-reply) the service is willing to queue up is a product of the configured channel and the reliability mode. If the number of queued messages has exceeded the queue's capacity, then the client will block, even when issuing a one-way call. However, once the call is queued, the client is unblocked and can continue executing while the service processes the operation in the background. This usually gives the appearance of asynchronous calls.

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• Sending Big Files with WCF

  - by Sean Feldman

  I had to look into a project that submits large files to WCF service. Implementation is based on data chunking. This is a good approach when your client and server are not both based on WCF, bud different technologies. The problem with something like this is that chunking (either you wish it or not) complicates the overall solution. Alternative would be streaming. In WCF to WCF scenario, this is a piece of cake. When client is Java, it becomes a bit more challenging (has anyone implemented Java client streaming data to WCF service?). What I really liked about .NET implementation with WCF, is that sending header info along with stream was dead simple, and from the developer point of view looked like it’s all a part of the DTO passed into the service. [ServiceContract] public interface IFileUpload { [OperationContract] void UploadFile(SendFileMessage message); } Where SendFileMessage is [MessageContract] public class SendFileMessage { [MessageBodyMember(Order = 1)] public Stream FileData; [MessageHeader(MustUnderstand = true)] public FileTransferInfo FileTransferInfo; }

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• Impromptu-interface

  - by Sean Feldman

  While trying to solve a problem of removing conditional execution from my code, I wanted to take advantage of .NET 4.0 and it’s dynamic capabilities. Going with DynamicObject or ExpandoObject initially didn’t get me any success since those by default support properties and indexes, but not methods. Luckily, I have a reply for my post and learned about this great OSS library called impromptu-interface. It based on DLR capabilities in .NET 4.0 and I have to admit that it made my code extremely simple – no more if :)

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• Why is my Tiled map distorted when rendered with LibGDX?

  - by Sean

  I have a Tiled map that looks like this in the editor: But when I load it using an AssetManager (full static source available on GitHub) it appears completely askew. I believe the relevant portion of the code is below. This is the entire method; the others are either empty or might as well be. private OrthographicCamera camera; private AssetManager assetManager; private BitmapFont font; private SpriteBatch batch; private TiledMap map; private TiledMapRenderer renderer; @Override public void create() { float w = Gdx.graphics.getWidth(); float h = Gdx.graphics.getHeight(); camera = new OrthographicCamera(); assetManager = new AssetManager(); batch = new SpriteBatch(); font = new BitmapFont(); camera.setToOrtho(false, (w / h) * 10, 10); camera.update(); assetManager.setLoader(TiledMap.class, new TmxMapLoader( new InternalFileHandleResolver())); assetManager.load(AssetInfo.ICE_CAVE.assetPath, TiledMap.class); assetManager.finishLoading(); map = assetManager.get(AssetInfo.ICE_CAVE.assetPath); renderer = new IsometricTiledMapRenderer(map, 1f/64f); }

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• Make it simple. Make it work.

  - by Sean Feldman

  In 2010 I had an experience to work for a business that had lots of challenges. One of those challenges was luck of technical architecture and business value recognition which translated in spending enormous amount of manpower and money on creating C++ solutions for desktop client w/o using .NET to minimize “footprint” (2#) of the client application in deployment environments. This was an awkward experience, considering that C++ custom code was created from scratch to make clients talk to .NET backend while simple having .NET as a dependency would cut time to market by at least 50% (and I’m downplaying the estimate). Regardless, recent Microsoft announcement about .NET vNext has reminded me that experience and how short sighted architecture at that company was. Investment made into making C++ client that cannot be maintained internally by team due to it’s specialization in .NET have created a situation where code to maintain will be more brutal over the time and  number of developers understanding it will be going and shrinking. Not only that. The ability to go cross-platform (#3) and performance achievement gained with native compilation (#1) would be an immediate pay back. Why am I saying all this? To make a simple point to myself and remind again – when working on a product that needs to get to the market, make it simple, make it work, and then see how technology is changing and how you can adopt. Simplicity will not let you down. But a complex solution will always do.

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• Fastest pathfinding for static node matrix

  - by Sean Martin

  I'm programming a route finding routine in VB.NET for an online game I play, and I'm searching for the fastest route finding algorithm for my map type. The game takes place in space, with thousands of solar systems connected by jump gates. The game devs have provided a DB dump containing a list of every system and the systems it can jump to. The map isn't quite a node tree, since some branches can jump to other branches - more of a matrix. What I need is a fast pathfinding algorithm. I have already implemented an A* routine and a Dijkstra's, both find the best path but are too slow for my purposes - a search that considers about 5000 nodes takes over 20 seconds to compute. A similar program on a website can do the same search in less than a second. This website claims to use D*, which I have looked into. That algorithm seems more appropriate for dynamic maps rather than one that does not change - unless I misunderstand it's premise. So is there something faster I can use for a map that is not your typical tile/polygon base? GBFS? Perhaps a DFS? Or have I likely got some problem with my A* - maybe poorly chosen heuristics or movement cost? Currently my movement cost is the length of the jump (the DB dump has solar system coordinates as well), and the heuristic is a quick euclidean calculation from the node to the goal. In case anyone has some optimizations for my A*, here is the routine that consumes about 60% of my processing time, according to my profiler. The coordinateData table contains a list of every system's coordinates, and neighborNode.distance is the distance of the jump. Private Function findDistance(ByVal startSystem As Integer, ByVal endSystem As Integer) As Integer 'hCount += 1 'If hCount Mod 0 = 0 Then 'Return hCache 'End If 'Initialize variables to be filled Dim x1, x2, y1, y2, z1, z2 As Integer 'LINQ queries for solar system data Dim systemFromData = From result In jumpDataDB.coordinateDatas Where result.systemId = startSystem Select result.x, result.y, result.z Dim systemToData = From result In jumpDataDB.coordinateDatas Where result.systemId = endSystem Select result.x, result.y, result.z 'LINQ execute 'Fill variables with solar system data for from and to system For Each solarSystem In systemFromData x1 = (solarSystem.x) y1 = (solarSystem.y) z1 = (solarSystem.z) Next For Each solarSystem In systemToData x2 = (solarSystem.x) y2 = (solarSystem.y) z2 = (solarSystem.z) Next Dim x3 = Math.Abs(x1 - x2) Dim y3 = Math.Abs(y1 - y2) Dim z3 = Math.Abs(z1 - z2) 'Calculate distance and round 'Dim distance = Math.Round(Math.Sqrt(Math.Abs((x1 - x2) ^ 2) + Math.Abs((y1 - y2) ^ 2) + Math.Abs((z1 - z2) ^ 2))) Dim distance = firstConstant * Math.Min(secondConstant * (x3 + y3 + z3), Math.Max(x3, Math.Max(y3, z3))) 'Dim distance = Math.Abs(x1 - x2) + Math.Abs(z1 - z2) + Math.Abs(y1 - y2) 'hCache = distance Return distance End Function And the main loop, the other 30% 'Begin search While openList.Count() != 0 'Set current system and move node to closed currentNode = lowestF() move(currentNode.id) For Each neighborNode In neighborNodes If Not onList(neighborNode.toSystem, 0) Then If Not onList(neighborNode.toSystem, 1) Then Dim newNode As New nodeData() newNode.id = neighborNode.toSystem newNode.parent = currentNode.id newNode.g = currentNode.g + neighborNode.distance newNode.h = findDistance(newNode.id, endSystem) newNode.f = newNode.g + newNode.h newNode.security = neighborNode.security openList.Add(newNode) shortOpenList(OLindex) = newNode.id OLindex += 1 Else Dim proposedG As Integer = currentNode.g + neighborNode.distance If proposedG < gValue(neighborNode.toSystem) Then changeParent(neighborNode.toSystem, currentNode.id, proposedG) End If End If End If Next 'Check to see if done If currentNode.id = endSystem Then Exit While End If End While If clarification is needed on my spaghetti code, I'll try to explain.

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• Reflector – The King is Dead. Long Live the King.

  - by Sean Feldman

  There was enough of responses for Red Gate announcement about free version of .NET Reflector. Neither there’s a need to explain how useful the tool is for almost any .NET developer. There were a lot of talks about the price – $35 is it something to make noise about or just accept it and move on. Honestly, I couldn’t make my mind and was sitting on a fence. Today I learned some really exciting news – two (not one), two different initiatives to replace Reflector. A completely free ILSpy from SharpDevelop Commercial later to be stand-alone free decompiler tool from JetBrains These are great news. First – ILSpy is already doing what I need – you can download it and start using. Having experience with a few projects from SharpDevelop I believe it will be a great tool to have. One of immediate things that I found is reflecting obfuscated assemblies. Reflector blows up and closes, where ILSpy takes it gracefully and just shows an exception with no additional popup windows. JetBrains – company I highly respect. This is the case where I would continue paying money for their product and get more productivity. I am heavily relying on R# to do my job, and having a reflecting option would only add oil into fire of convincing others to use the tool. Though what I was excited was the statement JetBrains boldly put out: …it’s going to be released this year, and it’s going to be free of charge. And by saying “free”, we actually mean “free”.

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• Ubuntu 12.04, xbmc, opengl, intel motherboard

  - by Sean Hagen

  I've got an HTPC that I built myself, with a Asus P5G41T-M Motherboard. It's got an on-board HDMI port, and I've been using that with no problems. I started out with Mythbuntu ( an older version ), and recently updated to 12.04.1 LTS without any issues. I've been thinking about trying out XBMC for a while, and I decided to give it a go. Unfortunately, I seem to be running into quite a few issues. I got XBMC installed from the repos without any issues, but when I try to run it from a console, a box pops up with the following: XBMC needs hardware accelerated OpenGL rendering. Install an appropriate graphics driver. Please consule XBMC Wiki for supported hardware http://wiki.xbmc.org/?title=Supported_hardware In the console, it prints out the following: X Error of failed request: BadRequest (invalid request code or no such operation) Major opcode of failed request: 136 (GLX) Minor opcode of failed request: 19 (X_GLXQueryServerString) Serial number of failed request: 12 Current serial number in output stream: 12 When I run vainfo, I get this: libva: VA-API version 0.32.0 libva: va_getDriverName() returns 0 libva: Trying to open /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so libva: va_openDriver() returns 0 vainfo: VA-API version: 0.32 (libva 1.0.15) vainfo: Driver version: Intel i965 driver - 1.0.15 vainfo: Supported profile and entrypoints VAProfileMPEG2Simple : VAEntrypointVLD VAProfileMPEG2Main : VAEntrypointVLD The file /usr/lib/x86_64-linux-gnu/dri/i964_drv_video.so exists: # ls -l /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so -rw-r--r-- 1 root root 628728 Mar 29 2012 /usr/lib/x86_64-linux-gnu/dri/i965_drv_video.so And in /var/log/Xorg.0.log the following error pops up: GLX error: Can not get required symbols. I'm not really sure where to go from here. I've tried searching all over for how to fix this problem. I've done "apt-get --reinstall xserver-xorg" ( as well as a few other video driver packages ) a few times, and no change. Any help in getting this issue sorted out would be awesome.

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• std::map for storing static const Objects

  - by Sean M.

  I am making a game similar to Minecraft, and I am trying to fine a way to keep a map of Block objects sorted by their id. This is almost identical to the way that Minecraft does it, in that they declare a bunch of static final Block objects and initialize them, and then the constructor of each block puts a reference of that block into whatever the Java equivalent of a std::map is, so there is a central place to get ids and the Blocks with those ids. The problem is, that I am making my game in C++, and trying to do the exact same thing. In Block.h, I am declaring the Blocks like so: //Block.h public: static const Block Vacuum; static const Block Test; And in Block.cpp I am initializing them like so: //Block.cpp const Block Block::Vacuum = Block("Vacuum", 0, 0); const Block Block::Test = Block("Test", 1, 0); The block constructor looks like this: Block::Block(std::string name, uint16 id, uint8 tex) { //Check for repeat ids if (IdInUse(id)) { fprintf(stderr, "Block id %u is already in use!", (uint32)id); throw std::runtime_error("You cannot reuse block ids!"); } _id = id; //Check for repeat names if (NameInUse(name)) { fprintf(stderr, "Block name %s is already in use!", name); throw std::runtime_error("You cannot reuse block names!"); } _name = name; _tex = tex; //fprintf(stdout, "Using texture %u\n", _tex); _transparent = false; _solidity = 1.0f; idMap[id] = this; nameMap[name] = this; } And finally, the maps that I'm using to store references of Blocks in relation to their names and ids are declared as such: std::map<uint16, Block*> Block::idMap = std::map<uint16, Block*>(); //The map of block ids std::map<std::string, Block*> Block::nameMap = std::map<std::string, Block*>(); //The map of block names The problem comes when I try to get the Blocks in the maps using a method called const Block* GetBlock(uint16 id), where the last line is return idMap.at(id);. This line returns a Block with completely random values like _visibility = 0xcccc and such like that, found out through debugging. So my question is, is there something wrong with the blocks being declared as const obejcts, and then stored at pointers and accessed later on? The reason I cant store them as Block& is because that makes a copy of the Block when it is entered, so the block wouldn't have any of the attributes that could be set afterwards in the constructor of any child class, so I think I need to store them as a pointer. Any help is greatly appreciated, as I don't fully understand pointers yet. Just ask if you need to see any other parts of the code.

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• Why is email HTML stuck in the 90's?

  - by Sean Dunwoody

  (disclaimer - I've already tried asking this on StackOverflow, but apparently it was off topic. If the same is true here please let me know and I'll close/delete this question.) I've spent about a day putting together a frustrating email newsletter, using tables, inline styles etc. It feels a lot harder than it should be. I was just wondering, is there any reason why email clients have such poor support of HTML and CSS (CSS in particular)? I would have imagined they'd be scrambling to outdo each other in this department ... Is is a security thing (I can't really imagine why)? Or are they just lazy?

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• How to Install Moodle to subdomain with softaculous via cpanel

  - by Sean

  Hi there i installed moodle to a directory with softaculous as it doesn't allow installing to subdomain, after install I created a subdomain and pointed the destination (of subdomain) to previously created moodle directory, now when I go to the subdomain.example.com it says Incorrect access detected, this server may be accessed only through "http://example.com/moodle" address, sorry. Please notify server administrator. Any suggestions much appreciated! I must be doing something wrong, when installing it was very similar to these instructions

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• Comparing Checksums

  - by Sean Feldman

  This is something trivial, yet got me to think for a little. I had two checksums, one received from a client invoking a service, another one calculated once data sent into service is received. Checksums are plain arrays of bytes. I wanted to have comparison to be expressed as simple as possible. Quick google search brought me to a post that dealt with the same issue. But linq expression was too chatty and I think the solution was a bit muddy. So I looked a bit more into linq options presented in the post, and this is what ended up using: var matching = original_checksum.SequenceEqual(new_checksum); Sometimes things are so simple, we tend to overcomplicate them.

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• Install Moodle to subdomain with Softaculous via cPanel

  - by Sean

  I installed Moodle to a directory with Softaculous. Since it doesn't allow installing to a subdomain, after installing it I created a subdomain and pointed the destination (of the subdomain) to the previously created Moodle directory. Now when I go to the subdomain.example.com it says Incorrect access detected, this server may be accessed only through "http://example.com/moodle" address, sorry. Please notify server administrator. I must be doing something wrong, when installing it was very similar to these instructions. Any suggestions would be much appreciated.

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• Orthographic Zooming with 0,0 at top/left

  - by Sean M.

  I'm trying to implement zooming on my 2D game. Since it's using orthographic projection, I thought it would be easy to implement zooming. After looking around the internet, I found a bunch of explanations and samples on how to do this if (0,0) is the center of the screen with the orthographic projection. The problem is, my ortho projection has (0,0) at the top-left (similar to XNA/Monogame, and a couple others). I could not find any examples about how to implement zooming to the center of the screen when the center is not (0,0). And help/links/code examples would be greatly appreciated.

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• wave-vs.net

  - by Sean Feldman

  This is an interesting plug-in for VS.NET 2008/2010 to allow remote pair-programming. I’m a big advocate for pair-programming and collaborative work, so this plug-in has its place in the real world. I used to pair-program with a developer that was remote, and we used VNC/RDC, but this one is way better.

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• Reading/Writing Promoted Properties from BRE

  - by Sean Feldman

  ESB Toolkit Extensions is an open-source library giving you an extended BRE/BRI provider to read and write promoted properties of a message within business rules engine. I’ve used it to achieve automated process for mapping to canonical schema and then back to destination schema based on receiver ID as a promoted property (will blog on this later). A very useful library!

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• BizTalk Project: AssemblyInfo Issue

  - by Sean Feldman

  Every new BizTalk project has the next line in AssemblyInfo.cs file:   The only way I could solve it was to instruct R# to ignore this error. Has anyone dealt with it differently?

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• BizTalk Server Pipeline Component Wizard

  - by Sean Feldman

  Time saving project to generate BizTalk Server Pipeline Components.

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• How do I stop my ethernet network connection from dropping?

  - by Sean Hill

  My ethernet-based network connection doesn't stay up consistently. I'm running a ping against the gateway and it will: Work for a minute Freeze, time out, or give multi-second response times Repeat If it's stuck and I disable/enable networking through the network manager applet everything will work fine again for a minute. After 280 packets transmitted I'm getting 41% packet loss. I've tried a different cable and connection to the gateway but this had no effect. The distance to the gateway is just about 3 feet. Seems to work fine if I switch over to Windows, but Ubuntu is my main OS and I can't even use it right now as I depend on the network. My setup... OS: Ubuntu 11.04, dual-booting Windows 7 Mobo: Gigabyte Z68X-UD4-B3 CPU: Intel Core i7 2600K Edit A little clarification... Network Manager is still showing me as connected, but I am unable to reach to gateway or anything beyond. At no point does NM suggest the connection is lost and calling ifconfig shows that I still have an IP address. I tried connecting to a different gateway with a different cable and the same problem arises. As requested: lspci | grep -i eth 07:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 06) dmesg | tail -f [ 14.024709] EXT4-fs (sda5): re-mounted. Opts: errors=remount-ro,commit=0 [ 14.026443] EXT4-fs (sda7): re-mounted. Opts: commit=0 [ 14.176101] hda-intel: IRQ timing workaround is activated for card #2. Suggest a bigger bdl_pos_adj. [ 23.917731] eth0: no IPv6 routers present [ 726.109697] r8169 0000:07:00.0: eth0: link up [ 733.169494] r8169 0000:07:00.0: eth0: link up [ 753.930119] r8169 0000:07:00.0: eth0: link up [ 880.787332] r8169 0000:07:00.0: eth0: link up [ 1159.161283] r8169 0000:07:00.0: eth0: link up [ 1406.623550] r8169 0000:07:00.0: eth0: link up Edit @roland-taylor: Network is always available under Windows. Pings do not timeout, applications do not complain of no network availability, large downloads are not interrupted or slowed.

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