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  • Lost transparency in SDL surfaces drawn manually

    - by Christian Ivicevic
    I want to create SDL_Surface objects for each layer of my 2d tile-based map so that I have to render only one surface per layer rather than too many tiles. With normal tiles which do not have transparent areas this works well, however I am not able to create a SDL_Surface with transparent pixels everywhere to be able to draw some tiles on specific parts which should be visible (I do NOT want the whole surface to appear with a specific opacity - I want to create overlaying tiles where one can look through). Currently I am creating my layers like this to draw with SDL_BlitSurface on them: SDL_Surface* layer = SDL_CreateRGBSurface( SDL_HWSURFACE | SDL_SRCALPHA, layerWidth, layerHeight, 32, 0, 0, 0, 0); If you have a look at this screenshot I have provided here you can see that the bottom layer with no transparent parts gets rendered correctly. However the overlay with the tree tile (which is transparent in the top left corner) is drawn own its own surface which is black and not transparent as expected. The expected result (concerning the transparency) can be seen here Can anyone explain me how to handle surfaces which are actually transparent rather than drawing all my overlay tiles separately?

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  • Creating a bootable CD based on Ubuntu Server

    - by 0xC0000022L
    Note: bootable here refers to an Installation CD, not to the El Torito bootable CD standard if narrowly construed, or to a Live CD if widely construed. What tools exist to create a bootable CD based on Ubuntu 12.04? Unlike the Live CD used for the Desktop edition, the Server edition doesn't use Casper and that's exactly what I want. I.e. this question is not about a live CD! I have read InstallCDCustomization, but that only covers preseeding, adding modules etc. What I would like to achieve is rather to build a bootable CD from scratch, preferably based on the kernel of my running system, the bash and other binaries from that running system. I know how to preseed my own installation CD, so I'm comfortable with the tools involved there. However, that skips important parts such as creating the directory structure that is expected on a bootable CD. And that's what I'm looking for. I guess the question could be summed up as: what tools are the Ubuntu build masters using to author the alternate and server installation CDs and where can I find documentation for these? I would prefer doing this on the terminal (because that's how I run the Ubuntu Server installations themselves). But if I need a second machine with GUI to do it, I can certainly live with that.

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  • Stitch scanned images using CLI

    - by Adam Matan
    I have scanned a newspaper article which was larger than the scanner glass. Each page was scanned twice: the top and the bottom parts, where the middle part appeared in both images. Is there a way to quickly match and stitch these scanned images, preferably using CLI? The panorama stitching tools I know require lengthy configuration, which is mostly irrelevant: lens size, focus, angle etc. Hugin has a solution for this issue, but it isn't practical for batch jobs.

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  • MyPaint is an Open-Source Graphics App for Digital Painters

    - by Asian Angel
    Are you looking for a terrific graphics app to use for original painting and artwork creation on your computer? Whether it is for you or the kids, MyPaint is an app that you should definitely have on hand for when those artistic moods come along. For our example we chose to install MyPaint on Ubuntu 10.10…you can easily find it in the Ubuntu Software Center by doing a quick search. Once you have it installed, all that is left to do is decide if you want to add additional brushes (link provided below) and then start having fun creating your next work of art. Here are some of MyPaint’s wonderful features: Exists for several platforms (Linux, Windows, and Mac OS X) Supports pressure sensitive graphics tablets Extensive brush creation and configuration options Unlimited canvas (you never have to resize) Basic layer support Comes with a large brush collection including charcoal and ink to emulate real media MyPaint is fun to use and can quickly become very addicting as you experiment during the creation process! Links MyPaint Homepage Download Additional Brushes for MyPaint Download the GIMP Plugin for the OpenRaster File Format 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 We Learn To Hold Our Keyboards [Funny]

    - by Jason Fitzpatrick
    Your environment can have a big influence on your default keyboard hold: which kind of hold do you use? We don’t know about the rest of you but we learned the cubicle-hold long before we landed in a cubicle farm. [via MakeUseOf] HTG Explains: How Windows Uses The Task Scheduler for System Tasks HTG Explains: Why Do Hard Drives Show the Wrong Capacity in Windows? Java is Insecure and Awful, It’s Time to Disable It, and Here’s How

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  • how to save a png as a smaller file but the same resolution?

    - by Radek
    not sure what stackexchange site is the best for this question. I have a scanned jpg file with below properties and size 8.5MB pixel dimension: 2468 × 3484 pixels print size: 208.96 × 294.98 millimeters resolution: 300 × 300 ppi I need to save the file as png while the size cannot be bigger than 4MB. The most important is that the size of picture must remain the same. I mean that the object size in the picture must stay the same. Could anybody tell me what is used to define the size of the objects in the picture?

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  • Serving images from different domain

    - by Tom Gullen
    Google audit: Serve static content from a cookieless domain (15) 2.65KB of cookies were sent with the following static resources. Serve these static resources from a domain that does not set cookies: If my domain is widgets.com, should I set up a img.widgets.com that servers these resources? How beneficial is this? Edit I setup img.widgets.com to serve images from, and changed all images to this URL. But I still get that message?

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  • Store HighRes photos in Database or as File?

    - by David
    I run a site which has a couple of million photos and gets over 1000 photos uploaded each day. Up to now, we haven't kept the original file that was uploaded to conserve on space. However, we are getting to a point that we are starting to see a need to have high-res original versions. I was wondering if its better to store these in the filesystem as an actual file or if its better to store them in a database (ie: mysql). The highres images would be rarely referenced but may be used when someone decides to download it or we decide to use it for rare processes like making a new set of thumbnails sizes/etc.

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  • Building an web/ mobile app like instagram [on hold]

    - by John
    I would like to build an app like instagram or twitter. User can upload photo, type a few words, hashtag, share their location. And there will be a page like newsfeed showing updates. User can login with oauth. How do I store those data especially photos? (In those cloud thins? like Google cloud? I don't know how those cloud works) and what is the cost of it (if can compress user uploaded photos?). I currently only knows php, javascript and mysql.

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  • JPEG images not loading on PlayBook (Marmalade + iwgame)

    - by Vexille
    I'm using iwgame on a test project and I was trying to render different resolutions of JPG and PNG images. Everything works fine on the Marmalade Simulator, however once I deploy the game to our PlayBook and run it, only the PNG images are shown. I have declared the images in the MKB file and on a XML file iwgame's using to load the images. I've checked the deployments folder and all images are present in the intermediatefiles/native folder. We're currently using a BlackBerry only license, so we can only test this on the PlayBook, but we do intend to get a Community license and deploy to iOS and Android devices eventually (I'm not sure if this is a problem exclusive to the PlayBook). I really don't know if this is a Marmalade or a iwgame issue. I have a different test project without iwgame and it simply won't run with jpg images (I get the error: 'Could not find handler for extension "jpg"'). While searching for a sollution, I've seen people talking about using libjpg, but I've also found that Marmalade supposedly has integrated native jpeg support (and because of that iwgame has abandoned their jpeg loading support since v0.340), so I don't know what to think. I'm currently using the most recent versions of both Marmalade and iwgame, I believe: Marmalade 6.1.2 and iwgame 0.400. Also, please let me know if there's an easier or better way to do this, such as linking libjpg or something (I'm not exactly sure how to do this). I really would appreciate some help with this, there's a huge difference in size for the images we're planning to use, from a ~500kb jpg file to a ~3.5mb png file. Thanks, guys.

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  • Why the amount of 'indexed' images can go down?

    - by Roman Matveev
    I have a site with several thousand of images. All those images included into the sitemap submitted to Google Webmaster Tools. The amount of 'submitted' images is OK, but the amount of 'indexed' is significantly lower than the amount of 'submitted' and it is going DOWN! I'd understand if not all of my images got indexed (however it is also not clear and very frustrating for me) but I can not understand how the indexing can go in the negative direction?! All the images stays on their places. And pages containing them stays unchanged. At least they intended to be. Any thoughts?

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  • Making A Photo-Sharing App For Android In Eclipse [on hold]

    - by user3694394
    I've only just started developing mobile apps, which is something that I've been wanting to learn for a while now. I'm from an indie games studio, making PC games for around the last 3 years, and I finally decided to move into android app development. The only problem I'm having is that I don't know where to start. The project which I'm aiming to create will be something similar to Instagram, basically a photo-sharing app which allows users to take new photos, or pull them from their device, and add filters to them, before posting them. I have a rough idea of how I could go about doing this, but I need pointing towards any tutorials available for each specific step. So, here's my idea: Create a UI in eclipse (this wont be a problem for me, I should be able to do this fine through xml files) Setup a server-side database to store all user info and uploaded images (the images will need to be converted into byte arrays, and I have no idea how to do this through a database). My best idea would be to use a MySQL database to do this. Add user interactions (likes, favourites, reposts, etc.). This would, again, have to be stored in the database (or, at least, i think it would). Add the ability to take new photos using the phone's camera (I can probably do this anyway, using the Camera API). Add the ability to pull existing photos from the device (again, pretty simple to do). Add the ability to add filters to any photos (I had a look around, and there are some repos and resources which allow you to do this, but they're mainly for iOS development). Add facebook/twitter integration (possibly) to allow phots to be shared to other social networks. Create a news feed which shows users all of the latest photos from their friends, and allows them to post their own images to it. Give all registered users their own wall/page which has their latest posts/images displayed on it. Add the ability to allow users to follow other users, and display their followed users posts on their news feed. Yep. It's not going to be easy, and I don't even know if it's possible for me to do alone in Eclipse. However, this is the plan, and I'm going to do my best to learn everything I need to know to do this successfully. My actual question would be how should I start doing this- where do I begin learning how to do all of this? I've had a look at snapify, which can be edited via Parse, but I won't be spending hundreds of dollars (since I'm 15 and just don't have the available funds) on software. I have extensive knowledge of Java (again, I've been making games for around 3 years, mainly in Java), and various scripting languages. So, hopefully, this will be of some use here. Thanks in advance, Josh.

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  • Splitting a texture atlas into seperate images

    - by bigtunacan
    I'm doing a port of an existing game and the designer no longer has all of the original art; he only has the resulting texture atlases he used when developing for iPad. The tool I'm using won't support these files so I need to break them back out into separate PNG files. I'm hoping someone knows of a software tool that does this. PC software would be preferred in this case, but Mac would suffice.

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  • The Truth About Wi-Fi Signal Strength

    - by Jason Fitzpatrick
    Whether it’s the structural layout of your home or just ghosts in the machine, we’re all familiar with inexplicable Wi-Fi dead spots. One extra puzzling situation, unseen in the comic here, is when the addition of another wireless node actually causes issues with your Wi-Fi connectivity. There’s nothing more frustrating than having twice the Wi-Fi node power and half the actual signal at your laptop. If you’re looking to extend your Wi-Fi network coverage headache free, check out our guides to doing so with Tomato-powered routers and DD-WRT-powered routers. Your Wireless Internet Signal Strength [via FailDesk] 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 How To Boot Your Android Phone or Tablet Into Safe Mode

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  • Can I use copyrighted images and music in my game? [duplicate]

    - by Aman Grover
    This question already has an answer here: Using modified copyrighted music in non-commercial games 3 answers I am working on my first ever project , and I have used some copyrighted images(images taken from some other well recognized games). Is it even possible that I edit the images a little bit and then use them as royalty free images? If not, then can anyone tell me some web links from where I can get royalty free images?

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  • What game systems exist which uses camera input?

    - by Marc Pilgaard
    The group and I is in the middle of a semester project where we are currently researching on which game systems are using camera as input or as an interactive medium? We would like some help listing some of the game systems which uses camera input, as it seems hard to find other examples. Currently we know that webcam browser games uses camera input (Newgrounds webcam games), as well as the xbox kinect. I know this questions seems rather vague, though I still hope some people is capable of helping.

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  • SEO with duplicate content

    - by user16831
    I have a nature photography site with multiple types of photo galleries. Each photo and associated caption on my site appears in several galleries. For instance, a photo of a goldfinch that was taken on a trip to New Mexico in 2008 will appear in the "goldfinch.php" gallery, in the "finches.php" gallery, and in the "New_Mexico_2008.php" gallery. This duplication is useful for my site visitors - User A may want to see goldfinch photos, whereas User B wants to see photos from New Mexico - but I am concerned about the SEO implications. The typical suggestions to deal with duplicate content, such as 301 redirects and canonical tags, probably won't work in this case, because the page content is substantially different (ranging from ~1% to ~90% duplication, depending on the specific example chosen). The obvious solution to me would be to edit robots.txt to only allow search engines to crawl one type of gallery - for instance, if they crawled only the galleries organized by species(e.g. goldfinch.php), all the photos on my site would be found exactly once. However, the Google content guidelines recommend against blocking crawler access to duplicate information. Should I go ahead and use robots.txt anyway? Or is there a better solution?

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  • How do I throttle a command in a terminal window?

    - by To Do
    I needed to run convert with a lot of images at the same time. The command took quite a while but this doesn't bother me. The issue is that this command rendered my computer unusable while the command was running (for about 15 minutes). So is it possible to throttle the command by limiting resources (processor and memory) to the command, directly from the command line? This can only work if I add something to the same line before pressing Enter because once I start the process the computer slows so much that it is impossible for example to switch to "System monitor" and reduce priority. Edit: top and iotop results I managed to run top and sudo iotop >iotop.txt while doing one of these convert operations. (The iotop.txt file produced is difficult to read) Results of top: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 14275 username 20 0 4043m 3.0g 1448 D 7.0 80.4 0:16.45 convert Results of iotop: [?1049h[1;24r(B[m[4l[?7h[?1h=[39;49m[?25l[39;49m(B[m[H[2JTotal DISK READ: 1269.04 K/s | Total DISK WRITE:[59G0.00 B/s (B[0;7m TID PRIO USER DISK READ DISK WRITE SWAPIN(B[0;1;7m IO(B[0;7m COMMAND [3;2H(B[m2516 be/4 username 350.08 K/s 0.00 B/s 0.00 % 0.00 % zeitgeist-datahub 7394 be/4 username 568.88 K/s 0.00 B/s 77.41 % 0.00 % --rendere~.530483991[5;1H14275 idle username 350.08 K/s 0.00 B/s 37.49 % 0.00 % convert S~f test.pdf[6;2H2048 be/4 root[6;24H0.00 B/s 0.00 B/s 0.00 % 0.00 % [kworker/3:2] [5G1 be/4 root[7;24H0.00 B/s 0.00 B/s 0.00 % 0.00 % init Furthermore, even after the process ends, the computer does not return to the previous performance. I found a way around this by running sudo swapoff -a followed by sudo swapon -a

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  • Can I use one set of images to represent multiple sprites in Java?

    - by mal
    I've got a game that has 3 basic sprites, at the moment I'm loading 8 images into each sprite for animating. Each character class has a sprite object. if I've got 10 characters on screen at once then that's 80 images loaded in to memory. Can I make a central sprite class that only holds 8 images for each of the 3 sprites, then get the character objects to request the relevant images from the central sprite class, thereby massively reducing the memory required for the images?

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  • No proper kmeans clustering of images in matlab

    - by user3237134
    I am having 1200 face images in my training set.There are 2989 test face images. I am using eigen faces (PCA) for feature extraction. I am using kmeans clustering. Source code I tried: IDX = kmeans(z,5); clustercount=accumarray(IDX, ones(size(IDX))); disp(clustercount); Problem: Images are not clustered properly. Same faces should be clustered. But different faces are being clustered. Questions: Should I have to use still more face images for training? How accuracy of clustering can be achieved? What is the solution?

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  • Burn MP4 to CD in ubuntu 12.04

    - by xyc
    I have an mp4 file (115,8 mb). I want to burn it to a Sony CD-R (700 mb) to watch on tv. I tried to do it with DeVeDe from ubuntu software center but it always give me this error: "Conversion failed. It seems a bug of Mencoder." Can anyone tell me an other method to burn my mp4 to cd? Or can anyone tell me how to fix DeVeDe's error? I use a TOSHIBA computer (64 bit) with windows 7 home premium and ubuntu 12.04 LTS (installed via wubi.exe). Thx.

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  • Can I use wikipedia/commons images to create a logo for my program?

    - by bitmask
    I'm not perfectly clear on the implications of the GFDL for reusing pictures in this manner. Would adding a reference in the git's root folder's README suffice, or would that clutter every use of the logo, as you would have to attribute all original contributors on every single usage (like, e.g. presentations, flyers, websites, ...)? The software itself qualifies as FOSS, although it doesn't have a GNU* license.

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  • Effective and simple matching for 2 unequal small-scale point sets

    - by Pavlo Dyban
    I need to match two sets of 3D points, however the number of points in each set can be different. It seems that most algorithms are designed to align images and trimmed to work with hundreds of thousands of points. My case are 50 to 150 points in each of the two sets. So far I have acquainted myself with Iterative Closest Point and Procrustes Matching algorithms. Implementing Procrustes algorithms seems like a total overkill for this small quantity. ICP has many implementations, but I haven't found any readily implemented version accounting for the so-called "outliers" - points without a matching pair. Besides the implementation expense, algorithms like Fractional and Sparse ICP use some statistics information to cancel points that are considered outliers. For series with 50 to 150 points statistic measures are often biased or statistic significance criteria are not met. I know of Assignment Problem in linear optimization, but it is not suitable for cases with unequal sets of points. Are there other, small-scale algorithms that solve the problem of matching 2 point sets? I am looking for algorithm names, scientific papers or C++ implementations. I need some hints to know where to start my search.

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  • Is it bad SEO to embed an img tag in the middle of a sentence?

    - by Offlein
    I recently received a web mockup that included a sidebar with a short paragraph of narrow text; a quote from a person. At the end of the quote, the mockup had a circular portrait of the person floated to the right, hanging off the edge of the block, with the text flowing around the edge of it. It looked like this, where "TEXT" is the text, and "o" is the portrait TEXTTEXTTEXTTEXTTEX TEXTTEXTTEXTTE TEXTTEXTTEXT ooooo TEXTTEXTTEXT ooooooo TEXTTEXTTEXT ooooooo ooooo The easiest way to do this would be to put the tag for the portrait somewhere in the markup of the text, and float it right. But the HTML will look like, in that case: TEXTTEXTTE<img src="..." style="float: right;">XTTEXTTEXT and I fear this would be bad for SEO. Does anyone know? The other option is putting the at the end, absolutely positioning it, and using manual line breaks -- which sucks for my responsive design.

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  • Receive anonymous users' input by web upload form or email. Any online service for that?

    - by sja
    Are you aware of any online service or online "platform" allowing users, not previously registered, to upload pairs of picture+comment to a database? It would be a collaborative database of picture+comment pairs. I'm not going wiki or googlegroup, picasa or such because I'd like the user to have the least to do to participate, that is e.g.: take a picture with his phone and email it to an email to an email address. Or go to a web page with an upload form, type in a description, hit OK and that's it. And the goal is also that it be as hassle-less to put up as possible. Yeah I know, it can't programme itself to my requirements :) by I'm suspecting there's a tool or tool combination going a decent way through my needs. Thanks for any info/advice! SJA (NB the final goal is a kind of crowd-sourced census of specific urban items. If you have comment about the potential for spam-overload of my idea, other than "you're doomed", you're welcome!)

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