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• Photoshop How to save selection to PNG

  - by Aniti

  I have a largish PSD file with a couple of hundred layers, that I would like to extract selected areas from into PNG files. Areas can consist of a couple of layers. Being new to Photoshop, I have been using the following workaround. Duplicate needed layers into a new scratch PSD file of same size, TRIM to transparency, Save As PNG, undo TRIM, hide layers, rinse and repeat... I suppose I could do it without the scratch file and just crop selection, Save As PNG and undo, but there must be a nicer method. What other ways are there to accomplish this export of a selected area to PNG? EDIT: This is on Windows Xp running Photoshop CS3 Extended

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• ubuntu 12.04 can't find root partition (it doesn't look for btrfs partitions) end up with kernel-panic [closed]

  - by zalesz

  Possible Duplicate: There's an issue with an Alpha/Beta Release of Ubuntu, what should I do? I'm running Ubuntu 12.04 from kernel v. 3.2.0-17 with all partitions formatted as BTRFS. It was everything ok till kernel 3.2.0-18/19. Now system don't load, after trying to run it with recovery there is a msg that kernel panic occurred cause there is no partition with ext3/4 and some other partitions but I don't see any btrfs alike type. Any ideas how to fix it? Best

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• XNA - Obtaining depth from the scene's render target?

  - by user1423893

  I'm currently rendering my scene to a render target so it can be used for rendering methods such as post processing and order independent transparency. rtScene = new RenderTarget2D( GraphicsDevice, GraphicsDevice.PresentationParameters.BackBufferWidth, GraphicsDevice.PresentationParameters.BackBufferHeight, false, SurfaceFormat.Rgba64, DepthFormat.Depth24Stencil8, // Requires a depth format for objects to be drawn correctly (e.g. wireframe model surrounding model) 0, RenderTargetUsage.PreserveContents ); I am required to use RenderTargetUsage.PreserveContents so that the same render target can be rendered to multiple times, once for each of the draw methods below. DrawBackground DrawDeferred DrawForward DrawTransparent The problem is that DrawTransparent requires a copy of the scene's depth as a texture. Is there any way to obtain this from the scene render target above (rtScene)? I can't have more than one render target with RenderTargetUsage.PreserveContents as this causes problems on hardware such as the XBOX 360, so rendering the depth to a separate render target at the same time as I render the scene isn't possible as far as I can tell. Would I be able to get around this problem by "Ping-Ponging" two render targets (using the more compatible RenderTargetUsage.DiscardContents) and using the result for the depth texture?

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• CommonFilter 0.3D now released on CodePlex.

  CommonFilter is a subset of the CommonData project, containing just the functions and unit tests for filtering user input. The functions include filters for: Input of upper case and lower case alpha Input of numeric fields Input of text containing HTML markup to check that it only contains permitted markup. The general functions are available both as a form that silently drops non-permitted characters or in a try-parse format....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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• CommonFilter 0.3D now released on CodePlex.

  CommonFilter is a subset of the CommonData project, containing just the functions and unit tests for filtering user input. The functions include filters for: Input of upper case and lower case alpha Input of numeric fields Input of text containing HTML markup to check that it only contains permitted markup. The general functions are available both as a form that silently drops non-permitted characters or in a try-parse format....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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• Turn a Kindle into a Weather Display Station

  - by Jason Fitzpatrick

  The e-ink display, network connectivity, and low-power consumption of Kindle ebook readers make them a perfect candidate for an infrequently refreshed high-visibility display–like a weather display. Read on to see how to hack a Kindle to serve up the local weather. Tinker and hardware hacker Matt Petroff hacked his Kindle to accept input from a web server and then, graciously and in the spirit of geeky projects everywhere, shared his source code. He explains the heart of the project: The server side of the system uses shell and Python scripts to convert weather forecast data into an image for the Kindle. The scripts first download and parse forecast data from NOAA via the National Digital Forecast Database XML/SOAP Service. After parsing the data, the data then needs to be converted into an image. This is accomplished by preprocessing a specially crafted SVG file to insert temperatures, forecast symbols, and days of the week. This SVG is then rendered as a PNG using rsvg-convert and converted to a grayscale, no transparency color space as required by the Kindle using pngcrush. Finally, it is copied to a public location on the web server. The Kindle is set to refresh twice a day (you could easily tweak the scripts for a more frequent refresh) and displays the forecast as seen in the photo above–with crisp and easy to read text and icons. Hit up the link below for more information and the project’s source code. How To Create a Customized Windows 7 Installation Disc With Integrated Updates How to Get Pro Features in Windows Home Versions with Third Party Tools HTG Explains: Is ReadyBoost Worth Using?

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• Problems with LibreOffice Impress?

  - by kkp

  I am a big fan of Ubuntu. I have recently switched from Latex to LibreOffice Impress for PPT because it seems that with Impress you can quickly create slides. I am using LibreOffice 3.4.4 OOO340m1 (Build:402) on Ubuntu 11.04. I am saving them as .ppt format. However, facing the following problems. It is really frustrating and forcing me to use Windows/MAC just for making slides. Font is changing from Arial to TimesNewRoman specifically for Tables when I reopen an Impress presentation. Tables are stretched if I reopen an Impress presentation. Impress is not allowing me to compress them (the stretched tables) and I have needed to make a fresh table. Several other modifications are reverting back when I reopen an Impress presentation. For example, the "transparency" change to the borders (e.g., for rectangular shape). Arbitrarily Impress is crashing. It would be great if someone help me to resolve these issues. Thanks.

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• Qt sur Android ? Un développeur indépendant travaille sur le projet et sort un premier outil de portage d'applications

  Qt sur Android ? Pas encore, mais un développeur indépendant travaille sur le projet et sort une version alpha de son outil Qt ne sera pas porté sur Windows Phone 7. La décision est claire et a été répétée à plusieurs reprise par Nokia. Cette décision, qui fait suite au choix startégique du finlandais de prendre Windows Phone 7 comme plateforme de référence pour ses futurs smartphones pose de très nombreuses questions sur l'avenir du framework (utilisé par MeeGo, Symbian mais aussi le bureau KDE, etc.). La communauté n'est pas rassurée et les tentatives pour ramener un peu de sérénité se multiplient. C'est dans ce contexte qu'est arrivé dimanche derni...

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• Guidelines for creating referentially transparent callables

  - by max

  In some cases, I want to use referentially transparent callables while coding in Python. My goals are to help with handling concurrency, memoization, unit testing, and verification of code correctness. I want to write down clear rules for myself and other developers to follow that would ensure referential transparency. I don't mind that Python won't enforce any rules - we trust ourselves to follow them. Note that we never modify functions or methods in place (i.e., by hacking into the bytecode). Would the following make sense? A callable object c of class C will be referentially transparent if: Whenever the returned value of c(...) depends on any instance attributes, global variables, or disk files, such attributes, variables, and files must not change for the duration of the program execution; the only exception is that instance attributes may be changed during instance initialization. When c(...) is executed, no modifications to the program state occur that may affect the behavior of any object accessed through its "public interface" (as defined by us). If we don't put any restrictions on what "public interface" includes, then rule #2 becomes: When c(...) is executed, no objects are modified that are visible outside the scope of c.__call__. Note: I unsuccessfully tried to ask this question on SO, but I'm hoping it's more appropriate to this site.

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• Tizen 2.0 disponible avec son SDK, Samsung pourrait bientôt lancer un smartphone sous l'OS mobile open source fondé sur Linux

  Tizen 2.0 disponible avec son SDK Samsung pourrait bientôt lancer un smartphone sous l'OS open source fondé sur Linux Tizen 2.0, le système d'exploitation mobile open source fondé sur Linux est désormais disponible en version alpha avec son kit de développement. Tizen est né à la suite de l'abandon de MeeGo par Nokia. Il est soutenu par les développeurs de MeeGo d'Intel, Samsung et la fondation Linux. L'OS est destiné à une large gamme de dispositifs dont les smartphones, tablettes, netbooks, SmartTV et les systèmes de divertissement embarqués des véhicules. Cette étape importante du développement de Tizen montre un OS dont le code se rapproche d'une version qui pourra bientôt êtr...

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• cursor jumps when moving (and some other times)

  - by nyne

  i updated to 12.10 beta 1 when it was released (coming from 12.04 fresh install, i skipped the alpha releases of 12.10) since then i've done all the usual updates but ive had an issue with my cursor jumping. it does not jump when typing, i've done a lot of searching and cant find an answer, it tends to happen most when i move the cursor the jump is maybe 15-20 pixels down and to the right it seems like a display issue because if i hover over a link or the x to close a window the cursor will settle in it's down/right position, but the whatever im hovering over will still act as if that's where the mouse is, and clicking still works on the item. so the mouse is actually in its original location, but it's displaying offset and flickering back and forth from its down/right position and its correct position this makes use very difficult because the mouse is never displayed where it actually is and i have to estimate my clicks any ideas?

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• 16-bit PNGs in Slick2D

  - by Neglected

  I'm working on a project and I'm using some 3rd party sprites just to get it off the ground; recently I've come into a hitch. Slick2D doesn't seem to want to load my images. That is, it will warn me that images are the wrong bit-depth. All the images are in 16-bit PNG form (PNG is required for transparency). Is there any way I can disable the warning (being the bad guy programmer (the console print for each individual load REALLY SLOWS DOWN the image)) or is there another solution? I was thinking about converting all images (using imagemagick) to .gif (with an alpha channel). Would there be any loss in quality between formats? EDIT: I tried using imagemagick but some of the sprites use pure black so I can't do that without wrecking the image. EDIT2: using "identify" on any of the images show them as being 8-bit.. but Slick2D won't load them. What the hell? D: EDIT3: Issue solved (ish). If you are googling this then just disable the java png loader from slick by sticking this somewhere in your code (like the main method): System.setProperty("org.newdawn.slick.pngloader", "false");

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• Draw "vision cone" / targetting element onto game world

  - by gkimsey

  I'm wanting to indicate various things using a "pie slice" sort of shape as below. Similar to vision cones in stealth game minimaps, or targetting indicators in RTS type games for frontal area attacks. Something generic enough to be used for both would be ideal. I need to be able to procedurally (and efficiently) change things like the slice width and length, color, transparency, position in the world, etc. For my particular situation, there's no concern with elevation, funky terrain, or really any third axis at all as far as this element is concerned. I have two first inclinations on how to accomplish this: 1) Manually generate the vertices for a main triangle, (possibly two, superimposed to get the border effect), a handful more to approximate the arc at the end, and roll it into a mesh. 2) Use some sort of 2D drawing library to create a circle and mask it off at the right angles, render to texture, and use that. For reference, I have some experience with Ogre3D, but I'm not attached to it as this is a mostly academic pursuit at the moment. Other technologies that might be better at accomplishing this are more than welcome. Finally, I'm kind of curious about how to do a "flashlight" or similar 3D effect that could produce the same result, but on all surfaces in the lit area.

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• Why does my FPS drop gradually over time?

  - by mmankt

  I'm working on this game: yt alpha preview I came into a huge game-breaking problem - after 10-15 min of gameplay the FPS drops from 60 to 30 and is very unstable. I'm using tons of physics and particles, I'm deleting and nulling everything I can after it's supposed to be removed, I remove objects from vectors etc. The memory usage is stable at around 150mb so a leak is unlikely (or invisible?)- after a round ends and I delete everything, play a new round and performance is still terrible. I spent two days trying to figure this out and I just can't fix it. Maybe I'm missing something? I know it's hard to help with no code but I would just have to post my whole source.

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• What techniques can I use to render very large numbers of objects more efficiently in OpenGL?

  - by Luke

  You can think of my application as drawing a very large ball-and-stick diagram (or graph). At times, this graph can get very large, where the number of elements even outnumbers the pixels on the screen. Currently I am simply passing all of my textures (as GL_POINTS) and lines to the graphics card using VBO's. When the number of elements outnumbers the number of pixels, is this the most efficient way to do this? Or should I do some calculations on the CPU side before handing everything over to the GPU? If it matters, I do use GL_DEPTH_TEST and GL_ALPHA_TEST. I do some alpha blending, but probably not enough to make a huge performance difference. My scene can be static at times, but the user has control over a typical arc-ball camera and can pan, rotate, or zoom. It is during these operations that performance degradation is noticeable.

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• Hyperlinks on images in PDF from Word 2010

  - by Bristol

  I've got a Word 2010 document that I'm trying to convert to a PDF with "Save As...", preserving hyperlinks. Something odd is going on: Hyperlinks on inline text, or images that are inline, work fine. Hyperlinks on images with layout "in front of" text don't work in the PDF, same for hyperlinked drawing shapes. What I'm trying to do is make a "clickmap" image by putting an image on the page and overlaying parts of it with transparent shapes that hyperlink to different URLs. This isn't working, and the transparency has nothing to do with it - hyperlinks in the PDF seem only to work on "in line with text" elements. Am I missing something, or is there a better way to do this?

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• How to implement custom texture formats in Android?

  - by random1337

  What I know: Android can load PNG, BMP, WEBP,... via BitmapFactory. What I want to achive: Load my own 2D file format (e.g. 1-bit texture with a 1-bit alpha channel) and output a RGBA8888 texture. Question: Is there any interface to achieve this?(or any other way) The resulting image is used as a texture for a 3D model. Why would you do that? Saving phone memory and download bandwidth while expanding the texture at runtime to RAM seems reasonable for very simple textures.

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• Unable to execute binary file. Exec format error

  - by user2689020

  I recently heard about Breach, a Node.js based browser. I was following the instructions on http://codeforgeek.com/2014/08/download-install-breach-browser-ubuntu-14-04/ to install it but got the following error : breach-v0.3.22-alpha.6-linux-x64/__AUTO_UPDATE_BUNDLE__/exo_browser/exo_browser: cannot execute binary file: Exec format error After some googling, I found that it is because I am trying to install the 64 bit package on the 32 bit Ubuntu installation. I tried to find 32 bit package of the same but ended up with no luck. The browser is only available in 64 bit packet(as far as i know). So, My question is : Is it possible to somehow install it on the 32 bit OS or if any program available which can run 64 bit applications on the 32 bit OS. I have been googling around and found no help. Can anyone help me? I am using Ubuntu 14.04 (32 Bit). Thank You

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• Meet the Spec Leads & Active JSRs

  - by heathervc

  For your Monday reading pleasure, the JCP has published Spec Lead Profiles of In Progress/Active JSRs--there are 35 of these Spec Leads!  Find out more about these dedicated community leaders.  In preparing these profiles, the PMO also asked Specification Leads to tell about their experiences  as Spec Leads.  There were many themes that emerged around transparency, openness, agility and participation.  This led to a related article for those interested in learning about the experience of participating in the development of a Java Specification through the JCP program, see: "Active Specification Leads Offer Best Practices and Tips for Success". In Progress/Active JSRs were also reported on in the PMO Presentation during the last JCP EC Face-to-Face meeting in September 2012.   Now is a good time to start thinking about nominations for Star Spec Leads.  Nominations for 2012 are now open.  Anyone can submit a nomination for Star Spec Lead; however, we ask that you nominate an active JSR Spec Lead, operating a JSR under JCP program version 2.8 (introduced October 2011) or above.  Nominations close 31 December 2012.

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• Ubuntu 12.10 brise la barrière entre PC et Web, Quantal Quetzal sort avec sa déclinaison serveur

  Ubuntu 12.10 brise la barrière entre PC et Web Quantal Quetzal sort avec Web Apps, Dash et bien plus, la version serveur de l'OS disponible Quatre mois après avoir pointé le bout de son nez en version Alpha, Ubuntu 12.10 « Quantal Quetzal » est prêt pour une utilisation par le grand public. Ubuntu 12.10 marque une étape importante de la symbiose entre Cloud, Web et Desktop entreprise par Canonical. Cette mouture fournit une intégration étroite entre les environnements de bureau, les applications Web et les plateformes de Cloud. La nouvelle fonctionnalité Web Apps du système d'exploitation offre une intégration dans le bureau des applications Web comme Twitter, Gmail ou encore Face...

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• Les utilisateurs d'iPhone se regroupent en sept types, et vous, à quelle catégorie appartenez-vous ?

  Les utilisateurs d'iPhone se regroupent en sept types, et vous, à quelle catégorie appartenez-vous ? Actuellement, près de 70 millions de personnes dans le monde utilisent un iPhone. Et, d'après un site américain, le smartphone d'Apple compterait 7 types d'utilisateurs différents : - Le Fanboy : Pour lui, Apple, c'est l'Alpha et l'Omega, la perfection, le sacré. Il adhère donc à toutes les politiques de la firme et, évidemment, en achète tous les appareils, qu'il vénère et considère comme les "meilleurs jamais construits", largement au dessus de ceux proposés par la concurrence (entendez Microsoft). Pour lui, si son iPhone rencontre des problèmes, c'est la faute de son opérateur. Mais jamais de son si parfai...

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• How to make the Eclipse text editor background transparent?

  - by briankb

  Is there a way to make the background of Eclipse IDE text editor transparent? I would like to adjust the alpha transparency of the background, but have the text still be opaque. Perhaps there is a plugin that accomplishes this? I haven't seen any options under preferences. And my search on Google has ended in vain thus far, although I did find some nice color themes. Example (Textmate): Note that the text is still solid. This is important, since making the whole window transparent could cause text to bleed into the desktop wallpaper (or whatever is under Eclipse). On another side note, I'm using the latest version of Eclipse (Helios), on both Windows 7 and Fedora 14. Related questions: Transparent background in editor but solid text Eclipse fonts and background color

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• SDL blitting multiple surfaces at once

  - by extropic_engine

  I'm trying to write a platforming game where the sprites for the level backgrounds are broken up into 512x512 chunks. I keep 3 chunks in memory at a time and I'm trying to write code to blit all three to the screen. Here is the current code I have: SDL_Rect where; where.y = -game->camera->y; where.x = -game->camera->x - MAP_WIDTH; SDL_BlitSurface(left_chunk, NULL, screen, &where); where.x = -game->camera->x; SDL_BlitSurface(center_chunk, NULL, screen, &where); where.x = -game->camera->x + MAP_WIDTH; SDL_BlitSurface(right_chunk, NULL, screen, &where); The issue I'm running into is that whichever chunk gets blitted first is the only one that shows up. The rest fail to appear onscreen. I think the issue might have something to do with alpha transparency, but even if the chunks don't overlap at all they still fail to blit. In other parts of the code I'm blitting multiple things to the screen at once, such as characters and backgrounds, and they all show up correctly. This particular segment of code is the only area I'm encountering this problem. If I comment out the line that blits left_chunk, it changes to this:

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• how to use version control

  - by ptamzz

  I'm developing a web site in php in localhost and as modules of it gets completed, I upload it on the cloud so that my friends can alpha test it. As I keep developing, I've lots of files and I lose track of which file I've edited or changed etc. I've heard of something as 'version control' to manage all those but am not sure how it works. So, my question is: Is there an easy way/service/application available to me to track all the edits/changes/new files and manage the files as I develop the website. As Soon as I'm done with a module, I want to upload it on the cloud (I'm using Amazon Cloud Service). If something happens to the new files, I might want to get back to the old file. And maybe, in a click or two, I get to see the files which I've edited or changed since the last one I've uploaded?

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• Since my upgrade to 12.10 I don't have an Internetconection, but a networkconnection. Why? [closed]

  - by Klemens

  Possible Duplicate: There's an issue with an Alpha/Beta Release of Ubuntu, what should I do? Because of a few problems i had with ubuntu, I hoped that they would solve themselve by upgrading my system to v12.10. Now they are solved, jeeehaaa, but now I have a new problem. My Network-manager tells me, that I'm connected, but I don't have an Internetconnection. And now I don't know what to do. Help please. By the way, I'm online with my netbook.

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