[[Graphics::library]]

ADG: The ADG library (Automatic Drawing Generation) is a set of functions focused on automating the drawing of mechanical parts. It is not a CAD system but a library providing a non-interactive canvas where you can put common CAD entities such as paths, xatches and quotes, to create your technical drawings. The final result can be displayed inside a GTK+ widget or exported to any cairo available format, such as PostScript and PDF documents or PNG and SVG images.

BRL-CAD: BRL-CAD includes an interactive geometry editor, parallel ray-tracing support for rendering and geometric analysis, path-tracing for realistic image synthesis, network distributed framebuffer support, image-processing and signal-processing tools.

Brother ql: brother_ql is a software package to facilitate printing labels on Brother’s QL-Series label printers. It was designed to be used from the command line but also supports usage from other software packages (via its command line interface or via its Python API).

Chafa: Chafa is a command-line utility that converts all kinds of images, including animated GIFs, into ANSI/Unicode character output that can be displayed in a terminal. It is highly configurable, with support for alpha transparency and multiple color modes and color spaces, combining selectable ranges of Unicode characters to produce the desired output. The core functionality is provided by a C library with a public, well-documented API.

DataMelt: DataMelt (DMelt) is an environment for numeric computation, statistical analysis, data mining, and graphical data visualization on the Java platform. This Java multiplatform program is integrated with a number of scripting languages: Jython (Python), Groovy, JRuby, BeanShell. DMelt can be used to plot functions and data in 2D and 3D, perform statistical tests, data mining, numeric computations, function minimization, linear algebra, solving systems of linear and differential equations. Linear, non-linear and symbolic regression are also available. Neural networks and various data-manipulation methods are integrated using powerful Java API. Elements of symbolic computations using Octave/Matlab scripting are supported.

G'MIC is a full-featured free software framework for image processing, distributed under the CeCILL license. It provides several different user interfaces to convert / manipulate / filter / visualize generic image datasets, ranging from 1d scalar signals to 3d+t sequences of multi-spectral volumetric images, thus including 2d color images. Interfaces

A command-line interface gmic, to use the G'MIC image processing features from a shell. In this setting, G'MIC may be seen as a friendly companion to the ImageMagick or GraphicsMagick software suites.
A small, portable, thread-safe and multi-threaded, C++ image processing library libgmic, to be linked to third-party applications. Its simple API allows programmers to add all G'MIC features in their own software without much efforts (a C API is available as well).
A plug-in gmic_gimp, to bring G'MIC capabilities to the image retouching software GIMP. More than 450 filters are already available, sorted by category (Artistic, Black & white, Colors, Contours, Deformations, Degradations, Details, Film emulation, Frames, Layers, Light & shadows, Patterns, Rendering, Repair, Sequences, etc.).
A web service G'MIC Online, to allow users applying image processing algorithms on their images, directly from a web browser.
A Qt-based interface ZArt, for real-time processing of video streaming coming from webcams or video files.

Glaxnimate: Glaxnimate is a vector graphics animation program which focuses on being quick and easy to use. It's designed to work well with short animations to show on the web, supporting several common web formats like GIF, WebP, Lottie, SVG, and others.

Guile-opengl: Guile-OpenGL is a library providing access to the OpenGL graphics API from Guile.

JFreeChart: A free Java chart library. JFreeChart supports pie charts (2D and 3D), bar charts (horizontal and vertical, regular and stacked), line charts, scatter plots, time series charts, high-low-open-close charts, candlestick plots, Gantt charts, combined plots, thermometers, dials and more. JFreeChart can be used in applications, applets, servlets and JSP. JFreeChart's extensive feature set includes: - a consistent and well-documented API, supporting a wide range of chart types; - a flexible design that is easy to extend, and targets both server-side and client-side applications; - support for many output types, including Swing components, image files (including PNG and JPEG), and vector graphics file formats (including PDF, EPS and SVG); - JFreeChart is free software. It is distributed under the terms of the GNU Lesser General Public Licence (LGPL), which permits use in proprietary applications.

KiCad: KiCad is electronic design automation (EDA) software made for designing schematics of electronic circuits and printed circuit boards (PCB). KiCad is developed by the KiCad Developers Team, and features an integrated environment with schematic capture, bill of materials list, PCB layout and much more. KiCad is cross-platform, written with WxWidgets and runs on FreeBSD, GNU/Linux, Microsoft Windows and Mac OS X. A lot of component libraries are available. Also migrating tools for components are available (from other EDA software tools). File formats are plain text and well documented, which is good for CVS or Subversion and to make automated component generation scripts. Multiple languages are supported, such as English, Portuguese, Spanish, Czech, Polish, French, German, and Russian. The 3D PCB viewer use 3D model from Wings3D CAD.

Libpng: A collection of routines to create and manipulate PNG format graphic images. Designed as a replacement for GIF (and to a lesser extent TIFF) due to functional and patent problems, with more efficient compression (using Gzip-like DEFLATE), support for 24-bit color and alpha transparency.

Libtiff: 'libtiff' provides support for the Tag Image File Format (TIFF), a widely used format for storing image data. This package includes a library (libtiff) for reading and writing TIFF, a small collection of tools for doing simple manipulations of TIFF images and documentation on the library and tools. A small assortment of TIFF-related software that has been contributed by others is also included. The library, along with associated tool programs, should handle most of your needs for reading and writing TIFF images on 32- and 64-bit machines.

Libwebp: Provides libwebp.so, a library for encoding and decoding WebP image files. It also contains the command line tools 'cwebp' and 'dwebp'. libwebp is Google's official encoder for WebP images. It can encode in either lossy or lossless mode. Lossy images are essentially a wrapper around a VP8 frame. Lossless images are a separate codec developed by Google. Currently, libwebp only supports YUV420 for lossy and RGB for lossless due to limitations of the format and libwebp. Alpha is supported for either mode. Because of API limitations, if RGB is passed in when encoding lossy or YUV is passed in for encoding lossless, the pixel format will automatically be converted using functions from libwebp. This is not ideal and is done only for convenience.

NeoTextureEdit: NeoTextureEdit is a procedural, filter-based texture generator. It features 2D and 3D previewing of the texture, normal map generation and rendering of textures at any resolution. It can also be used as a library to generate the textures on-the-fly.

Openblox: A game engine providing a Lua API to enable developers to create games easily and with few restrictions.

Opencv: OpenCV (Open Source Computer Vision Library: http://opencv.org) is a free software library that includes several hundreds of computer vision algorithms. The document describes the so-called OpenCV 2.x API, which is essentially a C++ API, as opposed to the C-based OpenCV 1.x API (C API is deprecated and not tested with "C" compiler since OpenCV 2.4 releases) OpenCV has a modular structure, which means that the package includes several shared or static libraries. The following modules are available: Core functionality (core) - a compact module defining basic data structures, including the dense multi-dimensional array Mat and basic functions used by all other modules. Image Processing (imgproc) - an image processing module that includes linear and non-linear image filtering, geometrical image transformations (resize, affine and perspective warping, generic table-based remapping), color space conversion, histograms, and so on. Video Analysis (video) - a video analysis module that includes motion estimation, background subtraction, and object tracking algorithms. Camera Calibration and 3D Reconstruction (calib3d) - basic multiple-view geometry algorithms, single and stereo camera calibration, object pose estimation, stereo correspondence algorithms, and elements of 3D reconstruction. 2D Features Framework (features2d) - salient feature detectors, descriptors, and descriptor matchers. Object Detection (objdetect) - detection of objects and instances of the predefined classes (for example, faces, eyes, mugs, people, cars, and so on). High-level GUI (highgui) - an easy-to-use interface to simple UI capabilities. Video I/O (videoio) - an easy-to-use interface to video capturing and video codecs. ... some other helper modules, such as FLANN and Google test wrappers, Python bindings, and others.

Pling Store: Pling Store is an application to search and download themes, wallpapers, software applications and add-ons, as well as other creative content like audio, videos or comics, provided the content is released under liberal licensing terms like the GPL or Creative Commons from participating openDesktop.org sites.

Plotutils: Plotutils is a package for plotting and working with 2D graphics. It includes a library, "libplot", for C and C++ for exporting 2D vector graphics in many file formats. It also has support for 2D vector graphics animations. The package also contains command-line programs for plotting scientific data.

Plplot: PLplot is a software package for creating scientific plots whose plot symbols and text are limited in practice only by what Unicode-aware system fonts are installed on a user's computer. The package includes a core C library, separate language bindings for that library, and separate dynamically loaded device drivers which control how the plots are presented in non interactive and interactive plotting contexts. The PLplot core library can be used to create standard x-y plots, semi-log plots, log-log plots, contour plots, 3D surface plots, mesh plots, bar charts and pie charts. Multiple graphs (of the same or different sizes) may be placed on a single page, and multiple pages are allowed for those device formats that support them. PLplot bindings exist for many compiled and interpreted languages, including C, C++, Lisp, Lua, OCaml, Octave, Perl or Python.

Processing.js: Processing.js implements the Processing API in JavaScript and also converts Processing programs to JavaScript, thus allowing someone to program an HTML 5/JavaScript program by just learning the Processing programming language. Processing was originally developed to be easy for artists to program, but it is functional enough to be used for doing any visual programming including game making. Processing itself is also free software, but it depends on non-free parts of Java; therefore Processing.js is a good replacement.

SolveSpace: SolveSpace is a parametric 2D and 3D CAD program. Applications include: modeling 2d and 3d parts, and export DXF, PDF, SVG, 3d printing, preparing CAM data, simulate planar or spatial linkages, plane and solid geometry.

Visualization Library

Visualization Library can be especially useful in the following areas:

3D/2D Scientific Visualization
Virtual Reality
Augmented Reality
Visual Simulation
Data Visualization
Presentations
Multimedia applications
Special effects
3D/2D games

Visualization Library is a 3D/2D graphics middleware and not a 3D engine or a game engine, it is intended to be the base upon which such applications (among many others) can be developed.

Zbar: ZBar is a software suite for reading bar codes from various sources, such as video streams, image files and raw intensity sensors. It supports many popular symbologies (types of bar codes) including EAN-13/UPC-A, UPC-E, EAN-8, Code 128, Code 39, Interleaved 2 of 5 and QR Code. The flexible, layered implementation facilitates bar code scanning and decoding for any application: use it stand-alone with the included GUI and command line programs, easily integrate a bar code scanning widget into your Qt, GTK+ or PyGTK GUI application, leverage one of the script or programming interfaces (Python, Perl, C++) ...all the way down to a streamlined C library suitable for embedded use.

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