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In the Untahris Common Playground, you can play several classic fun, simple arcade games. But playing alone is not fun, and you can play them in multiplayer mode (on one computer, local network, or maybe Internet). Now, Untahris has an original experimental feature, which makes it more than just a bundle of these games! In multiplayer mode each player can play a different game --- however, they play all on the same board. This may lead to funny interactions, battles or alliances between them. The games in Untahris have been modified to make them better interact with each other. Thus, in each game you are allowed to shoot and collect bonuses, even if it was not a part of the original game.

Dia is a GTK+ based diagram creation program released under the GPL license. Dia is designed to be much like the commercial Windows program 'Visio'. It can be used to draw many different kinds of diagrams. It currently has special objects to help draw entity relationship diagrams, UML diagrams, flowcharts, network diagrams, and simple circuits. It is also possible to add support for new shapes by writing simple XML files, using a subset of SVG to draw the shape. It can load and save diagrams to a custom XML format (gzipped by default, to save space), can export diagrams to EPS or SVG formats and can print diagrams (including ones that span multiple pages).

Frei0r is a minimalistic plugin API for video sources and filters. The behaviour of the effects can be controlled from the host by simple parameters. The intent is to solve the recurring reimplementation or adaptation issue of standard effects. It is not meant as a generic API for all kinds of video applications. There is no support for the requirements of special application areas like non linear editors, hardware accelerated shader effects, and high precision video processing. These advanced issues are not even solved satisfactory for non cross application plugin apis and are still an evolving field. The frei0r API is not meant to be a competing standard to more ambitious efforts.

This is gpaint, a small-scale painting program for GNOME, the GNU Desktop. Gpaint does not attempt to compete with GIMP. Think of GIMP is like Photoshop as gpaint is like Windows Paint. Gpaint is still work in progress and many features are still being developed. However, gpaint is useable already for small image markups. A large part of gpaint is derived from xpaint 2.4.9, authored by David Koblas and later Torsten Martinsen. Gpaint also uses the gtkscrolframe widget (taking from eog 0.5) by Federco Mena-Quintero. Future plans include the implementation of missing features, printing support, and turning gpaint into a Bonobo component for simple image editing tasks. For bugs or general comments please send mail to Andy Tai, atai@atai.org

hsetroot is a tool which allows you to compose wallpapers ("root pixmaps") for X11. It has a lot of options like rendering gradients, solids, images but it also allows you to perform manipulations on those things, or chain them together. You could use one standard background image for instance, and using tint to make it fit your current theme. And yes, of course it is compatible with semi-translucent applications like aterm and xchat. At this time, hsetroot can render: gradients (multi-color with variable distance), solids (rectangles) and images (centered, tiled, fullscreen, or maximum aspect). It supports the following manipulations: tinting (overlaying a color mask), blurring, sharpening, flipping (horizontally, diagonally, vertically) it also allows you to adjust brightness, contrast and gamma-level. hsetroot also supports alpha-channels when rendering things.

This photo gallery software makes web albums of your digital images. JAlbum aims to be the easiest to use and most powerful tool in this category - and free! JAlbum is written after numerous disappointments with existing photo gallery software. With JAlbum you have full control of the look of the generated album, not just color theme and basic layout, still making an album is just a matter of drag and drop + a button click if you prefer to use one of the many existing looks. JAlbum will process your images, make index pages and slide show pages and even upload the final album to the Internet for your friends to see. No extra software is needed to view the albums, -just your web browser. Unlike "server side" album scripts, JAlbum albums can be served from a plain web server without scripting support. You can also share your albums on CD-ROM.

This is a drop-in replacement for the graphics/jpeg library. It does not include libturbojpeg.so (see graphics/libjpeg-turbo). libjpeg-turbo is a high-speed version of libjpeg for x86 and x86-64 processors which uses SIMD instructions (MMX, SSE2, etc.) to accelerate baseline JPEG compression and decompression. libjpeg-turbo is generally 2-4x as fast as the unmodified version of libjpeg, all else being equal. libjpeg-turbo was originally based on libjpeg/SIMD by Miyasaka Masaru, but the TigerVNC and VirtualGL projects made numerous enhancements to the codec, including improved support for Mac OS X, 64-bit support, support for 32-bit and big endian pixel formats (RGBA, ABGR, etc.), accelerated Huffman encoding/decoding, and various bug fixes. The goal was to produce a fully open source codec that could replace the partially closed source TurboJPEG/IPP codec used by VirtualGL and TurboVNC. libjpeg-turbo generally achieves 80-120% of the performance of TurboJPEG/IPP. It is faster in some areas but slower in others.

# The Color Transformation Language # The Color Transformation Language, or CTL, is a programming language for digital color management. Digital color management requires translating digital images between different representations or color spaces. For example, the pixels in an image may encode the colors that should be seen when the image is displayed on a video monitor. Printing this image on paper, or recording it on motion picture film requires transforming the pixels to an appropriate representation: Video, inks on paper and film all have different color gamuts and dynamic ranges. Color mixing is additive for video, but subtractive for inks and film. Video and film typically use three color channels, while four or more inks are used for printing on paper. A color management system must transform each pixel in the original image to corresponding amounts of ink or film density values.

Geomview and OOGL are part of an ongoing effort at the Geometry Center to provide interactive 3D graphics software which is particularly appropriate for displaying the kinds of objects and doing the kinds of operations of interest in mathematics research and education. You can compute an OOGL data file of a mathematical object that would be difficult or impossible to build a model of in the real world. In geomview, besides examining an object in ordinary Euclidean 3-space, you can look at objects in hyperbolic 3-space and Euclidean 4-space. The hyperbolic model is the projective one, where geodesics are straight lines and isometries are represented as 4x4 projective matrices. While geomview is tailored for mathematical visualization, it is written to be extensible and can serve as a general-purpose tool. Its functionality can be extended in an almost unlimited fashion by external modules.

Copperspice is a C++ library derived from the existing Qt 4.8 framework. The goal was to change the core design of the libraries, leveraging template functionality and C++11 capabilities. The redesign allowed the Qt Meta-Object Compiler (moc) system to be completely removed. Moc is a code generator and does not support many aspects of C++ including templates, complex data types, static type checking, and relies heavily on string comparisons. Removing moc improves runtime performance, reduces the complexity of the build process, and allows more issues to be detected at compile time. Key features: * Qt Meta-Object Compiler (moc) is obsolete * Written in C++11 * Library links directory to any standard C++ application * A template class can inherit from QObject * Copperspice includes several Qt5 classes