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• Setting console resolution in Ubuntu Server 13.10 within VMware

  - by user205625

  I've completed an install of Ubuntu Server 13.10 within VMware and am running into a problem configuring the console (non-graphical) resolution. When I was running Ubuntu Server 13.04, I ran into the same problem... posted the question here, which I later solved by editing /etc/default/grub thus: GRUB_CMDLINE_LINUX_DEFAULT="splash vga=789" I then ran sudo update-grub, sudo reboot and 13.04 stuck in a larger-size console mode... just what I wanted. BUT when I run the same commands in 13.10, during the reboot it changes to the new screen-res, BUT the screen stays black and I can't interact with it. I power down the VM, go back to a previous snapshot, and try again... and again. Since the hwinfo package is no longer available, I can't run sudo hwinfo --framebuffer to see what options are available. Ideas anyone? Here are the uncommented settings in my /etc/default/grub file at this moment: GRUB_DEFAULT=0 GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=false GRUB_TIMEOUT=10 GRUB_DISTRIBUTOR=lsb_release -i -s 2> /dev/null || echo Debian GRUB_CMDLINE_LINUX_DEFAULT="splash" GRUB_CMDLINE_LINUX="find_preseed=/preseed.cfg" GRUB_DISABLE_LINUX_RECOVERY=false GRUB_GFXMODE=800x600

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• Ubuntu Software Centre is gone! How can I get it back?

  - by Mochan

  Right. I am having MAJOR issues. (It would be much appreciated if you would solve them for me! Check my profile for open questions...) Following an answerer... who sorry to say... didn't give a great answer because it was just a graphical way of doing what I had already done - suggested I purge a library. Turns out that library controlled the Advanced Packaging Tool (apt), Ubuntu Software Centre and the repositories. Not a great tool to mess with. While trying to purge the library, it came up with 'Removing MyUnity.. Removing x... Removing x... Removing Ubuntu Software Centre... Removing X... Removing apt..." I quickly recognized and force shut-down my system. But I guess it was too late. So... well, plainly put - how do I get it back?!

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• Microsoft XNA code sample wont work with blender model

  - by FreakinaBox

  I downloaded this code sample and integrated it into my game http://xbox.create.msdn.com/en-US/education/catalog/sample/mesh_instancing It works with the model that they supplied, but throws and exception whenever I use one of my models. The current vertex declaration does not include all the elements required by the current vertex shader. TextureCoordinate0 is missing. I tried pluging my model into their original source code and same thing. My model is an fbx from blender and has a texture. This is the function that throws the error GraphicsDevice.DrawInstancedPrimitives( PrimitiveType.TriangleList, 0, 0, meshPart.NumVertices, meshPart.StartIndex, meshPart.PrimitiveCount, instances.Length );

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• Vertex data split into separate buffers or one one structure?

  - by kiba2

  Is it better to have all vertex data in one structure like this: class MyVertex { int x,y,z; int u,v; int normalx, normaly, normalz; } Or to have each component (location, normal, texture coordinates) in separate arrays/buffers? To me it always seemed logical to keep the data grouped together in one structure because they'd always be the same for each instance of a shared vertex and that seems to be true for things like character models (ex: the normal should be an average of adjacent normals for smooth lighting). One instance where this doesn't seem to work is other kinds of meshes like say a cube where the texture coordinates for each may be the same but that causes them to be different where the vertices are shared. Does everybody normally keep them separate? Won't this make them less space efficient if there needs to be an instance of texture coordinates and normals for each triangle vertex (They won't be indexed)? Can OpenGL even handle this mixing of indexed (for location) vs non-indexed buffers in the same VBO?

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• Creating movement path displays in a top-down 2d RTS

  - by nihohit

  My game is a top-down 2d RTS coded in C# using SFML's libraries. I want that during unit selection, a unit will display it's movement path on the map. Currently, after the path is computed as a list of directions ({left, up,down, down, down, left}, as an example), it's sent to the graphical component to create it's UI equivalent, and here I'm having some problems. current, these I've checked three ways to do it: compute the size of the image (in the example above it'll be a 3*2 rectangle) and create an invisible rectangle, and then go over the directions list and mark each spot with a visible point, so as to get a continous line. This system is slightly problematic because of the amount of large images that I need to save, but mostly because I have a lot of fine detail onscreen, and a continous line obstructs the view. again, compute the size of the image, but now create several (let's say 4) invisible images of that size, and then instead of a single continous line I'll switch between the four images, in each will appear only a fourth of the spots, in a way which creates a path animation. This is nicer on the eye, but here the memory demands, and the amount of time needed to compute each such image-loop is significant. Just create a list of single markers, each on a different spot on the path. This is very quick & easy on memory, but too sparse. Is there a simple or resource-light system to create path-animations?

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• How do you deal with transitions in animating walking?

  - by Aerovistae

  I'm pretty new to this whole animating models thing. Just learning the ropes. I got a nice walking animation going, which I can loop while a character is walking, but what about when they stop walking? I mean, they could be at any point in the animation at the time the player stops walking. How do I get them to smoothly return to a standing still position without having them snap into that position? The same goes for starting walking from a standing still position. Do you need a separate animation? How is this dealt with?

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• SQL to XML open data and NIEM training video posted

  - by drrwebber

  Learn how to build a working XML query/response system with SQL database accessing and XML components from example NIEM schema and dictionary. Software development practitioners, business analysts and managers will find the materials accessible and valuable in showing the decision making processes that go into constructing a working XML exchange. The 22 minute video available online shows how to build a fully working ULEXS-SR exchange using a Vehicle license search example.  Also included are aspects of NIEM training for assembling an IEPD schema with data models. Materials are focused on practical implementers, after viewing the instruction material you can use the open source tools and apply to your own SQL to XML use cases and information exchange projects. All the SQL and XML code, editor tools, dictionary and instructions that accompany the tutorial video are also available for download so you can try everything yourself.  See http://www.youtube.com/user/TheCameditor to run the video. And the open source project web site (sponsored by Oracle) contains all the resources, downloads and supplemental materials. Enjoy.

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• Choices in Architecture, Design, Algorithms, Data Structures for effective RDF Reasoning and Querying in a Big Data Environment [on hold]

  - by user2891213

  As part of my academic project I would like to know what choices in Architecture, Design, Algorithms, Data Structures do we need in order to provide effective and efficient RDF Reasoning and Querying in a Big Data Environment. Basically I want to get info regarding below points: What are the Systems and Software to get appropriate Architecture? What kind of API layer(s) would we need on top of the Big Data stores, to make this possible? The Indexing structures we will need. The appropriate Algorithms, and appropriate Algorithms for Query Planning across Big Data stores. The Performance Analysis and Cost Models we will need to justify the design decisions we have made along the way. Can anyone please provide pointers.. Thanks, David

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• Game Asset Size Over Time

  - by jterrace

  The size (in bytes) of games have been growing over time. There are probably many factors contributing to this: trailer/cut scene videos being bundled with the game, more and higher-quality audio, multiple levels of detail being used, etc. What I'd really like to know is how the size of 3D models and textures that games ship with have changed over time. For example, if one were to look at the size of meshes and textures for Quake I (1996), Quake II (1997), Quake III: Arena (1999), Quake 4 (2005), and Enemy Territory: Quake Wars (2007), I'd imagine a steady increase in file size. Does anyone know of a data source for numbers like this?

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• How to find classes that use certain DB tables

  - by Songo

  Problem: I'm asked to prepare a document where all our DB tables are listed and I'm supposed to list all Controllers that uses these DB tables for read and another list for Controllers that do write operations. Ex: +------------------------------------------+------------+ | DB table | tbl_Orders | +------------------------------------------+------------+ |Controllers that perform read operations | ?? | +------------------------------------------+------------+ |Controllers that perform write operations | ?? | +------------------------------------------+------------+ We are trying to write some documentation for a legacy system built using Zend framework. The code is scattered everywhere. There is code in the Controllers, in the models and even in the views. The application uses PROPEL as an ORM. What makes this really difficult is that the Controller may not be directly calling the table, but it may be instantiating a model class that calls that table. Is there an educated way to approach this crazy task? Note: Searching for the table name won't provide a solution because if a model uses that table I wouldn't know which Controller is using that model.

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• Is it a good idea to dynamically position and size controls on a form or statically set them?

  - by CrystalBlue

  I've worked mostly with interface building tools such as xCode's Interface Builder and Visual Studio's environment to place forms and position them on screens. But I'm finding that with my latest project, placing controls on the form through a graphical interface is not going to work. This more has to do with the number of custom controls I have to create that I can't visually see before hand. When I first tackled this, I began to position all of my controls relative to the last ones that I created. Doing this had its own pros and cons. On the one hand, this gave me the opportunity to set one number (a margin for example) and when I changed the margin, the controls all sized correctly to one another (such as shortening controls in the center while keeping controls next to the margin the same). But this started to become a spiders-web of code that I knew wouldn't go very far before getting dangerous. Change one number and everything re sizes, but remove one control and you've created many more errors and size problems for all the other controls. It became more surgery then small changes to controls and layout. Is there a good way or maybe a preferred way to determine when I should be using relative or absolute positioning in forms?

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• How well supported is the ATI graphics on a Sony VAIO SA?

  - by whoami

  This is the first time i will be buying a laptop/desktop to use as a Ubuntu platform with ATI. Now i did notice a while back that ATI drivers were not in cahoots with Linux as of yet. I am just wondering if any one is still experiencing ATI issues, or this is no longer the case. I am looking to spend money on a laptop Upgrade, but I don't want to spend a screw load of money just to find out I can only use windows and my Graphics driver does not work. So the Question is: What's ATI Support like on Ubuntu 10.10 Here is what im thinking of buying http://www.gadgetfreak.gr/wp-content/uploads/2011/02/SB_S08_keyboard_B_us_FP-1024x716.jpg, If any one has the Sony VAIO SA Series and installed Ubuntu on it, please do share your story, about driver problems. On a side note my old Sony S-Series which im using now, i never got the fingerprint reader or the webcam working on it, has any one been able to do this for the new models? I preferably dont care about the fingerprint reader but do care about the webcam.

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• Thinking about open-sourcing quiz project [closed]

  - by user72727

  I was thinking about starting an open source project. I have a few projects that might work ok as an open project but thought I might dip my toe into the water with a simple quiz project. The idea is you can add questions to a quiz, arrange questions by topic, difficulty or location. Users would hopefully get an interesting quiz, tuned to their ability. At the end they'd get a score and hopefully they might provide either some feedback on the questions or even supply a few questions of their own. I couldn't see a similar project (fame's last words). I have a basic version of the project that gives the user a bunch of questions to answer in 10 minutes. It doesn't currently group the questions into topics, and no feedback is taken. I've also been told the graphical questions don't work on Ipads for some reason. Would this be a suitable project to go open source? I did find various quiz's out there but all seemed rather narrowly focused. I really wanted something that could cover any type of question on any type of subject. I prefer to keep the questions in MySQL but I could see how this might make it more difficult for others to get on board - should I move to data files? How do I proceed? http://www.checkmypages.com/numbers

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• Enterprise 2.0 - How to

  - by me

  Today I had a very interesting lecture at the  Fachhochschule Nordostschweiz "Hochschule für Wirtschaft" around How to design & implement an Enterprise 2. 0 solution. We had a great (and sometime pretty skeptical)  discussion around Social Value Models. The presentation can be found below. Enterprise 2.0 - How to View more presentations from Peter Reiser Feedback are always welcome.

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• Accidentally Changed Dual Monitor Setup and don't know how to reset it

  - by user203783

  I have a dual monitor setup with my laptop and an external Asus monitor running under Ubuntu 11.10. When I first started using Ubuntu, it synced both screens. What showed up on my laptop showed up on my eternal monitor. Last night, I accidentally knocked the HDMI cable from its port (not that unusual in the tight space I work in). When I plugged it back in, as usual, the external monitor only displayed my wallpaper. Usually, I just restart Ubuntu and it resets, but last night what I now realize was the display console came up and somehow I changed the setup. Now the two screens show different jobs so to speak. Also, the external monitor doesn't display the ribbon, making switching between Firefox tabs and windows or apps jarring. I write for a living and need to quickly check bits of research, notes or sources while writing and the extra switching between mouse pad and external mouse to get one or the other screen to respond interrupts my work flow. The only technical help I can offer is when the display console popped up, the graphical representation of the screens was that the external screen appeared layered over by about one-quarter of the laptop screen. Again, these were icons. I tried to replicate that after I obviously screwed things up. If someone could help. I would appreciate it. If I have to use terminal, that's fine. I started using computers for writing back when they were green DOS prompts. There's a certain elegance to prompt commands to me. Maybe it's the writer in me. Again, if anyone can help me return my screens to sync under Ubuntu 11.10, I would greatly appreciate it.

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• Ubuntu 12.04 Server monitor goes into sleep mode (no display) after fresh install

  - by xamox

  For some reason I can boot and either use Ubuntu 12.04 server edition, or desktop version. I can live boot the disk, I can go through the installer, or even use the ubuntu alternate installer. But for some reason after the install completes and I reboot the monitor seems to go back into sleep mode and then never loads the command prompt. This is on an industrial adlink MXE-1300 PC. I've installed ubuntu server fine on other models of adlink machines but this one doesn't want to seem to play nice. To me it seems like if it was a video card issue than I could never even load the installer or run ubuntu in live mode. Any thoughts or troubleshooting tips would be greatly appreciated.

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• Rotate an object given only by its points?

  - by d33tah

  I was recently writing a simple 3D maze FPP game. Once I was done fiddling with planes in OpenGL, I wanted to add support for importing Blender objects. The approach I used was triangulization of the object, then using Three.js to export the points to plaintext and then parsing the result JSON in my app. The example file can be seen here: https://github.com/d33tah/tinyfpp/blob/master/Data/Models/cross.txt The numbers represent x,y,z,u,v of a single vertex, which combined in three make a triangle. Then I rendered such an object triangle-by-triangle and played with it. I could move it back and forth and sideways, but I still have no idea how to rotate it by some axis. Let's say I'd like to rotate all the points by five degrees to the left, how would a code doing it look like?

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• writing 3d game [closed]

  - by user1432980

  I want to write a game as my final year diploma project.(I'm a 4th-year-student now so I've got a year and several months). But I don't know what to choose: either write my own game engine using DirectX9(10)(I don't like OpenGL) or use OGRE + PhysX(Don't like Unity) I'm more interested in writing my own game engine(but I wonder if I'll create engine on the same level as even Unreal 1.0 hah) but on the other side with PhysX I'll have advanced physics in my game and with OGRE I'll have good grahics. For 3d models I want to use Maya. What do you advise me to choose? As for me I've got a little DirectX experience,not bad C++ programming skills(but not expert's) and a little knowledge of Maya. My English isn't perfect either hah...

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• Getting Started with the SSAS Tabular Model

  SSAS Tabular models are in-memory databases that model data with relational constructs such as tables and relationships, in order to provide a rapid and powerful way of providing self-service BI to client applications such as Microsoft Excel and Microsoft Power View. You’ve deployed SSAS in tabular mode, and deployed Adventureworks into it. What next? Rob Sheldon explains all. Check SQL Server performance at a glanceWe consulted 1000 SQL Server professionals to make SQL Monitor’s UI as clear as possible. Start monitoring with a free trial.

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• I need advice on creating 3D walk cycles in XNA

  - by Zetar

  I want to purchase a number of 3D models from TurboSquid and animate them in an XNA game. I wrote a lot of games from 1985-1999 and have recently become involved with XNA. Now I would like to port one of my old games to the XBOX. I do have a background in 3D animation; but that was years ago. What is the current method for animating a walk cycle with a 3D model and using it inside XNA? Is there a book, software or a tutorial that you can recommend? Thanks in advance and sorry for such a broad and currently naive question.

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• Where can I find a collection of photorealistic scenes? [on hold]

  - by emchristiansen

  Where can I find a collection of 10-100 3D scenes with photorealistic levels of detail? For example, the scene rendered here contains photorealistic detail. Note I want the underlying object models, textures, etc, not final renderings. I'll be using these scenes to test a computer vision idea. BTW, this is a reposting of this question. I wasn't able to find a Stack Exchange site that is perfectly suited to the question, but as this is a modeling and rendering question, I'm hoping it is a good enough match for the venue.

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• Is testable code actually more stable? [closed]

  - by Xodarap

  A google scholar search turns up numerous papers on testability, including models for computing testability, recommendations for how ones code can be more testable, etc. They all come with the assertion that more testable code is more stable, however I can't find any studies which actually demonstrate this. I tried looking for studies evaluating the effect of testable code vs. quality, however the closest I can find is Improving the Testability of Object Oriented Systems, which discusses the relationship between design flaws and testability. Is testable code is actually more stable? And why, or why not? Please back up your answers with references or evidence to back up your claim.

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• OpenJDK In the News: Oracle Outlines Plans to Make the Future Java During JavaOne 2012 [..]

  - by $utils.escapeXML($entry.author)

  Phil Rogers, AMD Corporate Fellow and HSA Foundation President, joined Oracle on stage to discuss Project Sumatra, which was recently approved in the OpenJDK Community. Project Sumatra will explore how Java can be extended to support heterogeneous computing models for improved performance and power consumption.Oracle plans to propose Project Nashorn, a new JavaScript engine for the Java Virtual Machine (JVM), later this year in the OpenJDK Community. Oracle expects to enhance Project Nashorn with the support of several other OpenJDK Community contributors, including IBM, Red Hat and Twitter.The OpenJDK Community continues to host the development of the reference implementation of Java SE 8. Weekly developer preview builds of JDK 8 continue to be available from jdk8.java.net.Quotes taken from the 13th press release from Oracle mentioning OpenJDK, titled "Oracle Outlines Plans to Make the Future Java During JavaOne 2012 Strategy Keynote".

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• What is a good format for a 3d topview map?

  - by Tinco

  I am building a 3d topview game like GTA2. In this game the ground is mostly one level (except for tunnels and highways). Most of the ground is also city so the ground is usually covered by either roads or buildings. The buildings are simple 3d models which the player can walk around on. Most of the gameplay is 2d. How should I model the map? I have considered the following options: Bitmaps, I think this gives problems when I want to add data smaller than a tile. Also the problem of bridges and tunnels seems hard to solve with this. Polygons, define all roads, terrain types, buildings with polygons and save that along with physics and texture information. What approach would you take or have you ever implemented this or know of an implementation?

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• MVC 2 Client Side Model Validation with ExtJS

  One of the most exciting new features in MVC 2 is "Enhanced Model Validation support across both server and client"; this new enhanced support allows for client side validation to be dynamically generated into a view from DataAnnotations attributes on models. One minor complaint: Out of the box, it only supports the Microsoft AJAX libraries. Good news: It can use other frameworks, and we have done just that! Ext.ux.MvcFormValidator The MvcFormValidator is an alternative form validation...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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