geometry concepts: defines and checks concepts for geometries

Classes
class	ggl::concept::Box< Geometry >
	Box concept. More...
class	ggl::concept::Linestring< Geometry >
	Linestring concept. More...
class	ggl::concept::MultiLinestring< Geometry >
	multi-linestring concept More...
class	ggl::concept::MultiPoint< Geometry >
	MultiPoint concept. More...
class	ggl::concept::MultiPolygon< Geometry >
	multi-polygon concept More...
class	ggl::concept::Point< Geometry >
	Point concept. More...
class	ggl::concept::Polygon< Geometry >
	Polygon concept. More...
class	ggl::concept::Ring< Geometry >
	ring concept More...
class	ggl::concept::Segment< Geometry >
	segment concept More...
Functions
template<typename Geometry >
void	ggl::concept::check ()
	Checks, in compile-time, the concept of any geometry.
template<typename Geometry1 , typename Geometry2 >
void	ggl::concept::check_concepts_and_equal_dimensions ()
	Checks, in compile-time, the concept of two geometries, and if they have equal dimensions.

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Detailed Description

All GGL algorithms use concepts for their geometries. This means that all algorithms work on the GGL-provided geometries (point, linestring, etc) but also on custom geometries.

By declaring registration macro's or by specializating traits classes it is possible to adapt custom or legacy geometries to fulfil the GGL geometry concepts.

GGL algorithms check the concepts of the input geometries. Concept checking is done using BCCL (Boost Concept Check Library).

This means that geometries provided by library users, or legacy geometries, or plain arrays, or boost tuples, all can be handled by the Generic Geometry Library. Also std::vector of points, or tuples can be handled either as a linestring or as a linear ring (polygon without holes).

There are concepts for

• points
• segment
• box
• linestring
• (linear) ring
• polygon
• multi point
• multi linestring
• multi polygon

The Generic Geometry Library uses the Boost Range Library to iterate through standard containers, boost arrays, c-arrays. So:

• linestring
• (linear) ring

are all just ranges. So a std::vector, std::deque, boost::array, iterator pair or c-array will be accepted as such.

Also the multi geometries:

• multi point
• multi linestring
• multi polygon are considered as ranges of respectively points, linestrings and polygons.

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Function Documentation

template<typename Geometry >

void ggl::concept::check

(

)

Checks, in compile-time, the concept of any geometry.

Definition at line 181 of file check.hpp.

template<typename Geometry1 , typename Geometry2 >

void ggl::concept::check_concepts_and_equal_dimensions

(

)

Checks, in compile-time, the concept of two geometries, and if they have equal dimensions.

Definition at line 194 of file check.hpp.