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Subject: CGAL 3.0 Released, Computational Geometry Algorithms Library
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Body:
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Subject: CGAL 3.0.1 Released
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Body:
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We are pleased to announce the release 3.0 of CGAL, the Computational Geometry
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Algorithms Library. Version 3.0 differs from version 2.4 in licensing, in the
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platforms that are supported and in functionality.
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We are pleased to announce the release 3.0.1 of CGAL, the Computational
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Geometry Algorithms Library. Version 3.0.1 is a bug-fix release for
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version 3.0. No new features have been added in 3.0.1. Here is the list
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of bug-fixes.
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The license has been changed to either the LGPL (GNU Lesser General Public
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License v2.1) or the QPL (Q Public License v1.0) depending on each package.
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So CGAL remains free of use for you, if your usage meets the criteria of
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these licenses, otherwise, a commercial license has to be purchased from
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Geometry Factory (www.geometryfactory.com).
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Polyhedron:
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- Fixed wrong include files for output support. Added example.
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Major changes in this release include the following:
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Planar_map :
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- Fixed the so called "Walk-along-a-line" point-location strategy to
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correctly handle a degenerate case.
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o Apollonius graph: the dual of the Voronoi diagram of a set of circles under
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the Euclidean metric. The implementation is dynamic.
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Triangulation_2 :
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- added missing figure in html doc
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- in Line_face_circulator_2.h :
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Fixed changes made to support handles with a typedef to iterator.
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The fix concerns operator== and !=.
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o Min_sphere_of_spheres_d: Algorithms to compute the smallest enclosing sphere
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of a given set of spheres in d-dimensional space.
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Alpha_shapes_3 :
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- fixed classify member function for edges
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o Spatial Searching: Provides exact and approximate distance browsing in a set
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of points in d-dimensional space (such as nearest neighbor searching).
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Number types :
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- Lazy_exact_nt :
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- added the possibility to select the relative precision of to_double()
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(by default 1e-5). This should fix reports that some circumcenters
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computations have poor coordinates, e.g. nan).
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- when exact computation is triggered, the interval is recomputed, this
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should speed up some kinds of computations.
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- to_interval(Quotient<MP_Float>) : avoid spurious overflows.
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o Largest_empty_iso_rectangle_2: Given a set of points P in the plane,
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computes the largest empty iso-rectangle that are inside a given
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iso-rectangle bounding box, and that do not contain any point of P.
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o Interval_skip_list: A data strucure for finding all intervals in R that
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contain a value, and for stabbing queries, that is for answering the
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question whether a given value is contained in an interval or not.
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o Existing packages have been improved in various area:
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2D and 3D triangulations, Planar Maps, Arrangements...
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o The CORE library (http://www.cs.nyu.edu/exact/core/) for exact computations
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is now distributed as part of CGAL as well.
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o We support the latest versions of the C++ compilers from GNU, Microsoft,
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Intel, Sun, SGI.
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o All demos are now using the portable Qt window toolkit.
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See http://www.cgal.org/releases_frame.html for a complete list of changes.
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Kernel :
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- missing acknowledgment in the manual and minor clarification of
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intersect() documentation.
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The CGAL project is a collaborative effort to develop a robust,
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easy-to-use, and efficient C++ software library of geometric data
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structures and algorithms. The CGAL library contains:
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o Basic geometric primitives such as points, vectors, lines, predicates
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for testing things such as relative positions of points, and operations
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such as intersections and distance calculation.
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o A collection of standard data structures and geometric algorithms,
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such as convex hull, (Delaunay, Regular, Constrained) triangulation, Voronoi
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diagrams, planar map, arrangements, polyhedron, smallest enclosing sphere,
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multidimensional query structures...
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o Interfaces to other packages, e.g. for visualization, and I/O, and
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other support facilities.
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For further information and for downloading the library and its
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For further information and for downloading the library and its
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documentation, please visit the CGAL web page: http://www.cgal.org/
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