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• Making an interface for input in C - How?

  - by tloszk

  I have a big question. I started to develop a simple 3D engine (or should I call it framework?). I use OpenGL for rendering and it is developed for Windows. It is all written in C. But I don't know, how to write an "interface" for the keyboard/mouse input. I would like to keep it as simple as possible and nice - what the Win32 "native" input system is not. If anyone has suggestions about the topic, please, tell me. Thanks for everyone, who answers to my question!

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• Collision Detection and Resolution in Three.js

  - by androidmaster

  So at the moment am making a simple game using three.js and three.firstpersonControls.js but with the current Three.js r66, they apparently removed checkWallCollision and then in the r67 firstpersonControls removed support for that collision. SO my question is how would i go about checking collision in 3D using three.js and then resolution to that collision. (Pushing player out of the block) Note I used a 2D array to generate the world so it's only cubes that I have to check collision with.... if this is a bad question or am lacking something please tell me before you -rep me, am just not sure how to do this and google doesn't want to help

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• How do I know I'm using kubuntu?

  - by Adobe

  I installed Kubuntu image long time ago, and did several release upgrades since that. I have package kubuntu-full installed, and boot into KDE. Currently it looks like I'm using ubuntu: ~: lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 13.10 Release: 13.10 Codename: saucy There's not a single kubuntu word in my /etc/apt/sources.list, or is it Kubuntu = Ubuntu - Unity + KDE now? For example there's a Pre-Alpha Ubuntu Thar already, but no Kubuntu one. Would I get Kubuntu Thar, by installing Ubuntu Thar in the way mentioned above? Probably Kubuntu team now are the guys responsible for KDE working in Ubuntu.

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• Problem with Numlock light and remapping keyboard

  - by ansidev

  I upgraded to Ubuntu 13.10. And there are two problem: Numlock is on. But after I press Ctrl+Space (hotkey for IBus, (default in 13.10 is Super+Space)), Numlock is off and I must press Numlock button twice to enable Numlock. About remapping keyboard, because my keyboard have some broken key, so I am using xmodmap to remap my keyboard (config file for xmodmap is $HOME/.xmodmap). But when I switch keyboard layout (I mentioned above), everything changed to default, and I must run xmodmap .xmodmap to remap keyboard again. When using Ubuntu 13.04, everything is good. How to solve my problems? UPDATE: 1. I am using two keyboard layout: English (US) and Unikey (from ibus-unikey package). 2. If I change key board layout using menu on Unity panel, no first problem.

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• Best hardware for a Ubuntu Computer?

  - by Dante Ashton

  Hey all. I'll be needing a new PC soon, but I've decided to build my own, so my question is...what's the best hardware for Ubuntu? Specifically, in terms of graphics cards; I'm looking for something that will run smoothly (for Compiz's effects and Unity) but will be quite modern (IE: have a HDMI output) The machine itself is just a generic computer, nothing special; I just want to future-proof it. I'm looking at quad-core chips and 3-4 gig of RAM. I want something that will play nice with Ubuntu; now, and in the future... I used to build machines years ago, but I've fallen behind (that was in the Windows 98 era...so yeah, quite a while ago!) My main problem is the graphics card; I'd prefer to stick with NVIDIA, but only a tiny amount of computers I've seen play nice with Nouveau.

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• 6 Ways to Speed Up Your Ubuntu PC

  - by Chris Hoffman

  Ubuntu is pretty snappy out-of-the-box, but there are some ways to take better advantage of your system’s memory and speed up the boot process. Some of these tips can really speed things up, especially on older hardware. In particular, selecting a lightweight desktop environment and lighter applications can give an older system a new lease on life. That old computer that struggles with Ubuntu’s Unity desktop can provide decent performance for years to come. HTG Explains: Why You Only Have to Wipe a Disk Once to Erase It HTG Explains: Learn How Websites Are Tracking You Online Here’s How to Download Windows 8 Release Preview Right Now

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• High CPU load - Ubuntu 14.04

  - by watt

  I noticed that sometimes when browsing (with other processes in the background), I get very high CPU load for the browser process (over 100%) and the computer becomes really slow. I tried switching from Firefox (with just a few extensions) to Chromium, but same thing happens without me visiting graphics-intense sites, flash sites or anything like that. I also noticed python or node (when running "make") produce the same high CPU load from time to time so this is not necessarily browser-related. When I only have a browser open, it doesn't seem to happen and everything is fine in Windows 7. I switched from unity to gnome3 with no effect. Specs: lenovo w510 (4gb RAM, i7 q820 @ 1.73) + up to date Ubuntu 14.04 64bit. Printscreen: http://imgur.com/8MZJNKC Do you guys have any idea why this might happen? Please let me know if there's other info you need. Thanks!

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• Bug in firefox address bar autocomplete running on KDE

  - by marcus

  Has anyone experienced this graphical glitch when typing in Firefox address bar? The drop-down list is not drawn correctly, with some "blocks" missing. After typing more letters or hovering the mouse cursor, the list redraws itself and becomes complete. I'm running Ubuntu 12.04, Firefox 13.0.1 and this only happens in KDE (tested with 4.8.2, 4.8.3 and 4.8.4). It does not happen in Unity or Xfce with the same user profile. If I go to the KDE control panel and disable the Fade effect, the bug starts to happen to almost every menu in the system, including, the taskbar window previews. Enabling the “Fade” effect corrects the bug everywhere except in Firefox. I have an Nvidia card and I am using the proprietary driver (current, not current-updates -- not sure about the difference), but the linked question on an Arch Linux forum says this happen with the open source driver and with other cards too. Does anyone have an idea for a solution?

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• xkb for simple remap

  - by Den Rimus

  I've faced some issues after remapping keyboard with xmodmap: settings get reset randomly after 2-20 minutes after applying. Googled it but no help: something resets them, but all mentions apply to xfce, while I'm under usual 14.04 Ubuntu with unity. I saw phrases like 'use xkb, forget xmodmap', but still have no idea how to do that. It's either classified or very complicated, because amount of info on that is significantly smaller than for xmodmap way. Here's my list of customisations: xmodmap -e "keycode 84 = Down" xmodmap -e "keycode 79 = Home" xmodmap -e "keycode 80 = Up" xmodmap -e "keycode 83 = Left" xmodmap -e "keycode 85 = Right" xmodmap -e "keycode 87 = End" xmodmap -e "keycode 90 = Insert" xmodmap -e "keycode 91 = Delete" xmodmap -e "keycode 89 = Next" xmodmap -e "keycode 81 = Prior" where keycodes are corresponding keys on numpad, with numlock = off (basically, I'm replacing KP_Del with Delete, KP_Home with Home etc - don't ask why)) Can someone help to find a way to do that using xkb - at least one of the lines? And where to find the "names" of keys for other so I could do the rest by example?

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• La Freebox V6 a été développée avec Qt et QML en C++, un framework sera disponible pour créer ses propres applications

  La Freebox V6 développée avec Qt et QML Un framework sera disponible pour créer ses propres applications Je sais ça s'écrit pas comme ça, mais c'est une très bonne annonce que voilà pour les utilisateurs de Qt ! En effet, toute l'interface utilisateur de la Freebox V6 a été développée à l'aide de Qt et du langage déclaratif QML. Ce dernier peut être utilisé conjointement avec du code en JavaScript ou être intégré à une application C++. Comme pour les PC et Mac, les développeurs auront plusieurs niveaux pour le développement d'applications : du natif et bas niveau, en C ou en C++ avec l'API 3D OpenGL ; un peu plus haut niveau avec Qt en C++ ou en JavaScript avec QML ; finalement, ...

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• Something other than Vertex Welding with Texture Atlas?

  - by Tim Winter

  What options (in C# with XNA) would there be for texture usage in a procedural generated 3D world made of cubes to increase performance? Yes, it's like Minecraft. I've been doing a texture atlas and rendering faces individually (4 vertices per face), but I've also read in a couple places about using texture wrapping with two 1D atlases to merge adjacent faces with the same texture. If two or more adjacent faces share the same image, it'd be quite easy to wrap in this way reducing vertices by a large amount. My problem with this is having too many textures, swapping too often, and many image related things like non-power of 2 images. Is there a middle ground option between the 1D texture atlas trick and rendering 4 vertices per cube face? This is a picture of what I have currently (in wireframe). 4 vertices per face seems extremely inefficient to me.

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• Can't add more than eight keyboard layouts

  - by Woofi Alakhi

  I read this article where is a workaround to add maximum eight keyboard layouts. But my questions are: I would like to try this, but I see they've written there something with "gnome" in the script. In my Ubuntu, 13.04, I have Unity. What do I do? I would have to do this for four x four keyboard layouts (to have 13 keyboard layouts). This script, however, is designed for two x four keyboard layouts. How do I get the four x four? I would really appreciate your tips and hints on this. And I would kindly ask you to keep it simple, if possible, because I'm really no expert in both Ubuntu and computers in general.

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• Questions about an Engine Java

  - by CJ Sculti

  so I am going to start developing Java games (3D) but I have a few questions. So I dont know if I should use an engine or make my own. I feel like I am "cheating" if I use an engine to make my game. Is it frowned upon in the game developing world? What are some advantages and disadvantages to using an engine for my game and is it really that much harder to make my own engine? I know that engines have built in models and textures with easy drag and drop interfaces, would I have any of that if I were to code my own engine? Thanks guys.

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• Anti-aliasing works for debug runtime but not retail runtime

  - by DeadMG

  I'm experimenting with setting various graphical settings in my Direct3D9 application, and I'm currently facing a curious problem with anti-aliasing. When running under the debug runtime, AA works as expected, and I don't have any errors or warnings. But when running under the retail runtime, the image isn't anti-aliased at all. I don't get any errors, the device creates and executes just fine. As I honestly have little idea where the problem is, I will simply give a relatively high-level overview of the architecture involved, rather than specific problematic code. Simply put, I render my 3D content to a texture, which I then render to the back buffer. Any suggestions as to where to look?

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• How to Convert an MP4 Video into an MP3 Audio File

  - by Erez Zukerman

  MP4 is a widely-used video format; you can grab MP4 files off YouTube, Vimeo, and many other online video websites. But what if you have a video of a song you love, and want to extract just the music? Read on to see two different ways to do just that. Latest Features How-To Geek ETC Have You Ever Wondered How Your Operating System Got Its Name? Should You Delete Windows 7 Service Pack Backup Files to Save Space? What Can Super Mario Teach Us About Graphics Technology? Windows 7 Service Pack 1 is Released: But Should You Install It? How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions How to Enable User-Specific Wireless Networks in Windows 7 Dim an Overly Bright Alarm Clock with a Binder Divider Preliminary List of Keyboard Shortcuts for Unity Now Available Bring a Touch of the Wild West to Your Desktop with the Rango Theme for Windows 7 Manage Your Favorite Social Accounts in Chrome and Iron with Seesmic E.T. II – Extinction [Fake Movie Sequel Video] Remastered King’s Quest Games Offer Classic Gaming on Modern Machines

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• how to get the application listed on open with menu?

  - by user17182377182122092121021929

  I have installed the sublime text 2 in sublime text by http://www.technoreply.com/how-to-install-sublime-text-2-on-ubuntu-12-04-unity/ way. now I can see them on when I click Win button and search for it. Same time I want to see them in open with context. I means when I right click on file and choose. open with other application how I can choose the sublime text. I can't see the option their to do this. Thanks for help in advance.

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• Can the Birds and Pigs Really Be Friends in the End? [Angry Birds Video]

  - by Asian Angel

  After landing in the Pig King’s castle the Red Bird and one of the Pigs have a startling revelation as they talk. Who knew that they had so much in common?! Angry Birds Friendship [via Geeks are Sexy] Latest Features How-To Geek ETC Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware How to Change the Default Application for Android Tasks Stop Believing TV’s Lies: The Real Truth About "Enhancing" Images The How-To Geek Valentine’s Day Gift Guide Inspire Geek Love with These Hilarious Geek Valentines MyPaint is an Open-Source Graphics App for Digital Painters Can the Birds and Pigs Really Be Friends in the End? [Angry Birds Video] Add the 2D Version of the New Unity Interface to Ubuntu 10.10 and 11.04 MightyMintyBoost Is a 3-in-1 Gadget Charger Watson Ties Against Human Jeopardy Opponents Peaceful Tropical Cavern Wallpaper

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• How to customize the gnome classic panel

  - by Luis Alvarado

  First the picture: As you can see in the image, the color used for the icons and words Applications and Places (In spanish in this case) they have a different background dark gray color than the rest of the panel. Also the icons look rather bigger in that panel. Now my questions are: Can the background colors be customized so they look the same all the way in the panel. Can the icons be somehow minimized a little so they do not look strange (bigger actually) How to edit the way to add icons to the panel. I have to actually have to press the ALT key then right click on it to add something. That extra key is not friendly at all. In this particular case am trying to help an older man start in Ubuntu. Unity is too much for him but Gnome is friendlier for him (Learning curve is not the best for older people.. specially 68+ year old people).

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• Portal Ported to a Graphing Calculator

  - by Jason Fitzpatrick

  It’s not exactly a 3D-rendered GPU-burner, but this calculator-based version of Portal still features the same portal-jumping tricks that delighted players in the original game. Built using Axe Parser, an advanced programming language for graphing calculators, Portal: Prelude is part an experiment in pushing the limits of Axe Parser and part long standing tradition of porting popular video games to graphing calculators. You can read more about Axe Parser and the many games and program projects under development using it here. [via Geeks Are Sexy] How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot Our Geek Trivia App for Windows 8 is Now Available Everywhere

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• Shader inputs in a general purpose engine

  - by dreta

  I'm not familiar with SDKs like Unity or UDK that much, so i can't check this offhand. Do general purpose engines allow users to create custom uniform variables? The way i see it, and the way i have implemented it in an engine i'm writing to learn 3D, is that there is a "set" of uniforms provided by the engine and if you want to write a custom shader then you utilize uniforms you need to create a wanted effect. Now, the thing is, first of all i'm not an artist, second of all, i didn't have a chance to create complex scenes yet. So my question is, is it common practice to define variables that the engine provides and only allow the user to work with what they're given? Allowing users to add custom programs and use them where they want is not hard, but i have issues imagining how you'd go about doing the same for uniforms.

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• How to break terrain (in blender) into Chunks for a game engine

  - by Red

  I've created an island in blender. 2048x2048 blender units. The engine developer wants me to split the terrain into 128x128 "chunks" so that would be 16x16 "chunks" from a top down view. The engine isn't using height maps, in order to allow caves, 3d overhangs, etc. I'm not in charge of the engine, so suggestions about that aren't needed here :/ I just need a good, seamless way to split a terrain mesh into 16x16 pieces without leaving holes. I'm very new to blender, so baby steps are very much welcomed :) Here's a quick render of what i've got so far. I added a plane to show sea level but i've since removed it. http://i.imgur.com/qTsoC.png

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• Can't bind gnome-do to Super + Space or Ctrl+Alt+Space

  - by johnf

  With today's updates to 12.04 I can no longer bind gnome-do to either ctrl+alt+space or super+space. With 11.10 it wasn't possible to use super+space, on a fresh install of 12.04 super+space was working properly. Today it stopped working, if I try to bind control+alt+space then the controlkey shows up in the keyboard binding as Primary. I am running Unity, which in the past blocked super+space, it seemed to have stopped blocking it on 12.04. It shouldn't affect ctrl+alt+space. Configuring either binding produces the following error in the gnome-do output: libdo-WARNING **: Binding 'space' failed! libdo-WARNING **: Binding 'space' failed! I'm stuck binding to shift+alt+space.

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• Invoke WCF rest service razor mvc 4

  - by Raj Esh

  I have been using jQuery to access my REST based wcf service which does not export the meta information. Using ajax, i could populate data into controls. I need guidance and directions as to how i can use these Rest service in my controller. I can't add Service reference to my MVC 4 project since my WCF rest does not to expose Metadata. Should i use UNITY? or any other DI frameworks?. Any sample would be of great help.

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• how to set owner and permission to a cryptsetup made device?

  - by Antoine Rodriguez

  I have an encrypted loopback volume. I need to mount and umount manually the volume so I use cryptsetup luksOpen and cryptsetup luksClose . However, When I invoke this command it pops up the /dev/mapper device under all the sessions under gnome/xfce/kde/unity ... And then it let the user to mount (with password), expulse and unmount the volume. It's quite annoying in a multi user server (you are working on your files and the volume is being unmounted). How can I define ownership and permission on the device ? I've tried chown and chmod approach witch gives nothing. Cryptsetup doesn't have any options that let you do that. crypttab auto mount the filesystem on boot witch is unwanted (only manual mount)

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• How to set Default Web Browser, Mail Client, Video Player & Music Player in the system

  - by Luis Alvarado

  I am trying to find the option that sets, for the whole system the default Web Browser, Mail Client, Video Player and Music Player instead of having to do it for each type of file. I knew where the option was in 11.04 but somehow I can not find it again. Just to not get anymore confused I am not talking about right clicking a file then changing the "Open With" to the one I want. The option I am looking for affects everything in general, so if I change, for example, the default video player to VLC, all movies will be watched with VLC. I am using Unity.

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