CGAL 6.1 - 2D Arrangements

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Classes
Topology Traits Concepts
Reference Manual » Concepts

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## Concepts
concept | AosBasicTopologyTraits
| The concept `AosBasicTopologyTraits` defines the minimal functionality needed for a model of a topology traits, which can substitutes the `TopolTraits` template parameters when the class template `Arrangement_on_surface_2<GeomTraits, TopolTraits>` is instantiated. In particular. a model of this concept holds the Dcel data structure used to represent the arrangement cells (i.e., vertices, edges, and facets) and the incident relations between them. More...
concept | AosTopologyTraits
| A geometry traits class encapsulates the definitions of the geometric entities and implements the geometric predicates and constructions needed by instances of the `CGAL::Arrangement_on_surface_2` class template and by the peripheral algorithms that operate on objects of such instances. Essentially, it maintains the doubly-connected connected edge list (DCEL) used by the arrangement. More...