Qu'est-ce que FreeSG?

Application using FreeSG FreeSG ("Free" as in "Freedom" and "Free of bloat") is an open-source 2D/3D engine and computational geometry library. FreeSG provides a general-purpose scene-graph system, designed to simplify such tasks as real-time rendering and geometrical queries. FreeSG is built on top of Agar, and it runs on all platforms supported by Agar.

FreeSG follows Agar's modular object-oriented design, which allows the library to remain completely generic, while application-specific classes can be implemented in separate libraries, or as part of the application. FreeSG implements rendering of scenes and objects, intersection tests, and solving of systems of geometrical constraints (using degree-of-freedom analysis techniques).

FreeSG depends on the Agar library, and it released under the same revised BSD license. FreeSG and its related projects are sponsored by Csoft.net Hosting and ElectronTubeStore.com.

FreeSG is currently under development. The sources are available via via Subversion.

The FreeSG distribution is organized in separate libraries:

  • SG: The base scene graph library. Using a compact scene description language, hierarchical scenes composed of arbitrary objects (e.g., polyhedrons, viewpoints, light sources) can be expressed. The relationship between those objects may be defined in terms of classical affine transformations, or systems of geometrical constraints.
  • SK: Implements display and edition of dimensioned 2D vector drawings (or sketches). Sketch elements can be expressed using systems of geometrical constraints.
  • RG: Rendering and edition of feature-based, composited 2D raster graphics.
  • MAP: Implements a classical "tile" engine built on top of RG.

Forums de discussion

Si vous avez des questions, commentaires ou suggestions à propos de FreeSG n'hésitez pas à contacter le mainteneur. Il existe aussi des groupes de discussion et un canal IRC sur irc.freenode.net (interface web).

Contribuer à FreeSG/Agar Vos commentaires et contributions nous aident à construire un meilleur logiciel avec une meilleure documentation. N'hésitez pas à nous faire parvenir vos signalements de bogues via Bugzilla.

01/06/2013 The RG library has been moved from Agar into the FreeSG distribution.
12/03/2009 The Subversion sources of FreeSG have been updated to work with Agar-1.4.
03/02/2008 Created freesg-commits mailing list for automated commit notifications of the FreeSG source code exlusively. Note that the previous source-diff list will continue to receive notices as well. The new list provides a RSS feed.
"The idea is if you use those two shapes and try to colour the plane with them so the colours match, then the only way you can do this is to produce a pattern which never repeats itself." -- Roger Penrose

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