Thor is an open-source and cross-platform library written in the programming language C++. It is an extension to SFML. SFML is a multimedia library with functionality for 2D graphics, sound, network, window/event handling, threads, and unicode. While SFML provides rather basic, generic features to allow a wide range of applications, the Thor library comes with high-level features that base on this framework and that are supposed to help in daily C++ routine, especially with respect to graphics and game programming.
To use Thor, you need a compiler compliant to C++11, for example Visual Studio 2010 or g++ 4.6.
The Thor library consists of several small modules, as shown below:
|Animation||Classes to animate sprites and other objects|
|Graphics||Various graphical functionality like big textures or color gradients|
|Input||Actions to combine real-time input and events, callbacks, enum-string conversions|
|Math||Random number generation and Delaunay triangulation|
|Particles||Particle system with emitters and affectors|
|Resources||Generic resource manager with automated loading and shared access|
|Shapes||Concave shapes, arrows, and other predefined figures|
|Time||Pausable clocks and timers, optional callbacks at expiration time|
|Vectors||Dot and cross products, angles, length, and more|
Thor is completely free to use, for both open-source and closed-source projects. It is licensed under the zlib/libpng license. Even though the license doesn't enforce this, I would appreciate a short acknowledgement in your product if you use the Thor library.