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CGAL Whole Course

CGAL

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CGAL Whole Course详细描述了CGAL的用法，用于构建3D或2D图形处理的程序。

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CGAL - the Computational Geometry Algorithms

Library

Pierre Alliez, Andreas Fabri, Eﬁ Fogel

To cite this version:

Pierre Alliez, Andreas Fabri, Eﬁ Fogel. CGAL - the Computational Geometry Algorithms

Library.

Ecole d’ing´enieur. Aout 2008 - SIGGRAPH 2008, Los Angeles, 2008, pp.194. <cel-

00340448>

HAL Id: cel-00340448

https://cel.archives-ouvertes.fr/cel-00340448

Submitted on 20 Nov 2008

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publics ou priv´es.

Computational Geometry

Algorithms Library

Pierre Alliez

INRIA

Andreas Fabri

GeometryFactory

Efi Fogel

Tel-Aviv University

Abstract

The CGAL Open Source Project provides

easy access to

efficient and reliable geometric algorithms

in the form of a C++ library, offering geometric data structures and algorithms, which are efficient,

robust, easy to use, and easy to integrate in existing software. The usage of de facto standard

libraries increases productivity, as it allows software developers to focus on the application layer.

This course is targeted at software developers with geometric needs, and course graduates will be

able to select and use the appropriate algorithms and data structures provided by CGAL in their

current or upcoming projects.

Key Facts

CGAL 3.3, released in June 2007: 90 software components, 600,000 lines of code, 3,500 user and

reference manual pages, Cross platform support, Annual release with 12,000 downloads, 1,000

subscribers on the user mailing list, 40 subscribers on the developer mailing list. CGAL is used in

many application areas by companies as Total (Oil&gas), British Telecom (Telecom), Cadence

(VLSI), Leica Geosystems (GIS), Dassault Systèmes (CAD), The Moving Picture Company (Visual

effects).

CGAL Project

The project is steered by an Editorial Board, it has a well defined development process, and the

infrastructure for distributed development. The following research institutes and companies are

actively involved or made contributions to the library: INRIA-Sophia-Antipolis, Max-Planck Institute

for Computer Science, Tel-Aviv University, GeometryFactory, ETH Zurich, FU Berlin, University of

Groningen, University of Utrecht, Stanford University, Athens University, and the Foundation of

Research and Technology – Hellas. For more information on the project see

www.cgal.org For an

overview on what is in CGAL:

http://www.cgal.org/Manual/3.3/doc_html/cgal_manual/packages.html

Organization of the Course

This course starts with an overview followed by three in-depth sessions covering

central data structures: The overview session presents the CGAL project and the

design principles of CGAL. CGAL has adopted the

exact computing

paradigm, which

yields robust and at the same time fast algorithms. CGAL further has adopted the

generic programming

paradigm, which makes CGAL particularly easy to customize and

to integrate. Finally, we show how CGAL fits naturally with the STL, and the Boost

graph library.

The session on

polyhedral surfaces

presents the underlying halfedge data structure

and how it can be customized to user needs. We further present algorithms for

polyhedral surfaces like parameterization, mesh subdivision and simplification, Boolean

operations, and intersection detection.

The session on

arrangements

presents the arrangement API and several data

structures built on top of it. These are 3D Minkowski sums, which can be used for

collision detection, and 3D lower envelopes, which can be used for visibility map

computations.

The last session covers the 2D and 3D

triangulation

API as well as the surface and

volume mesh generators, which are based on Delaunay refinement.

The source code of the examples will be made available at

http://www.cgal.org/Courses/SIGGRAPH2008.

Presenters

Dr. Andreas Fabri (organizer)

Chief Officer

GeometryFactory

20, Avenue Yves Emmanuel Baudoin 06130 Grasse, FRANCE

Email: andreas.fabri@geometryfactory.com

http://www.geometryfactory.com/

Dr. Efi Fogel

Senior Researcher

Faculty of Exact Sciences. Tel Aviv University Tel Aviv 69978, ISRAEL

Email: efifogel@gmail.com

http://www.cs.tau.ac.il/~efif/

Dr. Pierre Alliez

Senior Researcher

INRIA Sophia Antipolis – Mediterranee

2004 route des Lucioles BP 93 - GEOMETRICA, FRANCE

Email: pierre.alliez@sophia.inria.fr

http://www-sop.inria.fr/geometrica/team/Pierre.Alliez/

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