Hi all, The formal review of the Generic Geometry Library (GGL) starts today, November 5, 2009 and will finish November 15, 2009. GGL is being developed by Barend Gehrels, Bruno Lalande and Mateusz Loskot, with substantial input from this Boost mailing list. ------------------------------------------------ About the library: GGL defines concepts for geometries and implements some algorithms on such geometries. GGL is header-only, and can be applied in all software where geometry plays a small or a larger role. Users of the library can use just only one function, such as distance: int a[2] = {1,1}; int b[2] = {2,3}; double d = ggl::distance(a, b); Library users can also use the library in combination with std::vector, boost::tuple's and boost::ranges, such as: std::vector<boost::tuple<double, double, double> > line; line.push_back(boost::make_tuple(1, 2, 3)); line.push_back(boost::make_tuple(4, 5, 6)); line.push_back(boost::make_tuple(7, 8, 9)); double length = ggl::length(line); GGL can also be used in combination with custom or legacy geometries, adapting them to the library specializing traits classes or using registration macro's. Formally, GGL contains a dimension-agnostic, coordinate-system-agnostic and scalable kernel, based on concepts, meta-functions and tag-dispatching. On top of that kernel, algorithms are built: area, length, perimeter, centroid, convex hull, intersection (clipping), within (point in polygon), distance, envelope (bounding box), simplify, transform, convert, and more. The library is also designed to support high precision arithmetic numbers, such as GMP. The GGL might be used in all domains where geometry plays a role: mapping and GIS, gaming, computer graphics and widgets, robotics, astronomy... The core is designed to be as generic as possible and support those domains. However, for now the development has been mostly GIS-oriented. The GGL team proposes an extension model, very similar to what is used by GIL. The proposal as it is in the Boost Sandbox included three extensions: - SVG because it is used in the samples and to generate the documentation - WKT because it is used in the tests - The geographic coordinate system because it is used in some of the examples, also showing how other coordinate systems can be implemented There are more extensions, not included now, a.o.: - Spatial index - Map projections The proposed GGL has seen four previews, many discussions and many changes in design and implementation, based on those discussions. Previews were published on this list January '08, March'08, October'08 and February'09. GGL can be found in the sandbox https://svn.boost.org/svn/boost/sandbox/ggl/formal_review, including source code, examples, unit tests and documentation. Documentation can also be found online: http://geometrylibrary.geodan.nl/formal_review ------------------------------------------------------- Everybody on this list is invited to participate in this formal review. I hope to see your review of this library, including your vote, and I welcome your participation in the discussions on the Boost mailing list. Please always state in your review, whether you think the library should be accepted as a Boost library. Additionally, please consider giving feedback on the following general topics: - What is your evaluation of the design? - What is your evaluation of the implementation? - What is your evaluation of the documentation? - What is your evaluation of the potential usefulness of the library? - Did you try to use the library? With what compiler? Did you have any problems? - How much effort did you put into your evaluation? A glance? A quick reading? In-depth study? - Are you knowledgeable about the problem domain? Regards Hartmut Review Manager ------------------- Meet me at BoostCon http://boostcon.com