| [/============================================================================ |
| Boost.Geometry (aka GGL, Generic Geometry Library) |
| |
| Copyright (c) 2009-2011 Mateusz Loskot, London, UK. |
| Copyright (c) 2009-2011 Barend Gehrels, Amsterdam, the Netherlands. |
| Copyright (c) 2009-2011 Bruno Lalande, Paris, France. |
| |
| Use, modification and distribution is subject to the Boost Software License, |
| Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at |
| http://www.boost.org/LICENSE_1_0.txt) |
| =============================================================================/] |
| |
| [section:concept_segment Segment Concept] |
| |
| [heading Description] |
| [concept Segment..segment] |
| |
| |
| [heading Concept Definition] |
| |
| * there must be a specialization of `traits::tag` defining `segment_tag` as type |
| * there must be a specialization of `traits::point_type` to define the underlying point type |
| (even if it does not consist of points, it should define this type, to indicate the points it can work with) |
| * there must be a specialization of `traits::indexed_access`, per index and per dimension, with two functions: |
| * `get` to get a coordinate value |
| * `set` to set a coordinate value (this one is not checked for ConstSegment) |
| |
| [note The segment concept is similar to the box concept, defining using another tag. |
| However, the box concept assumes the index as `min_corner`, `max_corner`, while for the segment concept, there is no assumption.] |
| |
| [heading Available Models] |
| * [link geometry.reference.models.model_segment model::segment] |
| * [link geometry.reference.models.model_referring_segment referring segment] |
| |
| [endsect] |
