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- [/============================================================================
- Boost.Geometry (aka GGL, Generic Geometry Library)
- Copyright (c) 2009-2012 Mateusz Loskot, London, UK.
- Copyright (c) 2009-2012 Barend Gehrels, Amsterdam, the Netherlands.
- Copyright (c) 2009-2012 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_point Point Concept]
- [heading Description]
- [concept Point..point]
- A point is ['an entity that has a location in space or on a plane, but has no extent] ([@http://en.wikipedia.org/wiki/Point_(geometry) wiki]).
- The point is the most basic geometry of Boost.Geometry, most other geometries consist of points.
- ['(Exceptions are box and segment, which might consist of two points but that is not necessarily the case.)]
- [heading Concept Definition]
- The Point Concept is defined as following:
- * there must be a specialization of `traits::tag`, defining `point_tag` as type
- * there must be a specialization of `traits::coordinate_type`, defining the type of its coordinates
- * there must be a specialization of `traits::coordinate_system`, defining its coordinate system
- (cartesian, spherical, etc)
- * there must be a specialization of `traits::dimension`, defining its number of dimensions (2, 3, ...)
- (hint: derive it conveniently from `boost::mpl::int_<X>` for X Dimensional)
- * there must be a specialization of `traits::access`, per dimension, with two functions:
- * `get` to get a coordinate value
- * `set` to set a coordinate value (this one is not checked for ConstPoint)
-
- [heading Available Models]
- * [link geometry.reference.models.model_point model::point]
- * [link geometry.reference.models.model_d2_point_xy model::d2::point_xy]
- * a lat long point (currently in an extension)
- * [link geometry.reference.adapted.c_array C array]
- * [link geometry.reference.adapted.std_array C++ array container]
- * [link geometry.reference.adapted.boost_array Boost.Array]
- * [link geometry.reference.adapted.boost_fusion Boost.Fusion]
- * [link geometry.reference.adapted.boost_polygon Boost.Polygon]
- * [link geometry.reference.adapted.boost_tuple Boost.Tuple]
- * other point types, adapted e.g. using one of the [link geometry.reference.adapted registration macro's]
- [endsect]
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