GCGlib Graphics Engine

GCGlib cross-platform library concentrates all methods and algorithms developed by GCG researchers and students since 2007. It is a software repository intended to be used in all GCG projects and researchs. Our library is also applied in the development of technological products for commercial and industrial purposes.

The library provides robust and reliable code for Linux and Microsoft Windows systems. For Linux, 32 bits and 64 bits, Shared Object libraries are available. Under Microsoft Windows, GCGlib 32 bits DLL (Dynamic Linked Library) is available for MinGW using GNU C/C++. DLL libraries with 32 bits and 64 bits for Microsoft Studio Visual C/C++ are also deployed.

Most implemented algorithms are versions of well-known, public domain, methods. As GCGlib is being developed, algorithms can be adapted and enhanced to support our projects needs. Theoretical and technical knowledge in computer graphics, signal processing and computer vision is accumulated along this process. GCGlib includes functions and classes for:

2D and 3D visualization
Geometry processing
Linear algebra
Physics simmulation
Network communication

Camera and projector calibration
Statistics and data analysis
Multitask management
Signal, video and image processing
Subdivision schemes for adaptive surfaces

GCGlib Documentation

The documentation for classes, functions and macros of GCGlib can be found here.

GCGlib License

Permission is hereby granted, free of charge, to any researcher, student, professor or collaborator, provided that is officially affiliated or in cooperation with the Group for Computer Graphics, Image and Vision (the "GCG"), that obtain a copy of this software and associated documentation files (the "Software"), to deal in the Software for research or educational purposes except for commercial, industrial and other profit activity, without limitation to use, copy, modify and merge, subject to the following conditions:

The above copyright notice and this permission notice shall be fully included in all copies or substantial portions of the Software.
A complete citation to GCGlib library, GCG laboratory and to the website www.gcg.ufjf.br shall be included in all works, texts, pages, articles, reports, papers, websites, prototypes, books, dissertations, thesis, and all other types of public and private communications, published into any kind of media, printed or electronic, having part or all of its results or contents obtained using the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

GCGlib References

GCGlib is based on the following standard algorithms, publications, softwares and methods:

OpenGL: GCGlib uses the cross-platform OpenGL graphics library for real time rendering tasks.
Independent JPEG Group: this widely used free library is a Linux standard for JPEG image compression.
Pthreads Win32: it is a Windows version of the POSIX standard for multithread applications.
MinGW: forms an environment for developing and deploying native Microsoft Windows applications.
Numerical Recipes: a few numerical functions of GCGlib are adaptations of some of the methods presented in this complete and useful book family.
M. Matsumoto & T. Nishimura, "Mersenne Twister: A 623-Dimensionally Equidistributed Uniform Pseudo-Random Number Generator", ACM Transactions on Modeling and Computer Simulation, v.8, n.1, pp.3-30, 1998: we implemented a sequential version of the Mersenne Twister random number generator.
GIT: a distributed version control system that helps GCGlib to be constructed in a cooperation scheme.
Doxygen: automatically generates GCGlib documentation from gcg.h header.