text: // Boost.Geometry (aka GGL, Generic Geometry Library)
  //
  // Copyright (c) 2011-2012 Barend Gehrels, Amsterdam, the Netherlands.
  
  // This file was modified by Oracle on 2018-2021.
  // Modifications copyright (c) 2018-2021, Oracle and/or its affiliates.
  // Contributed and/or modified by Vissarion Fysikopoulos, on behalf of Oracle
  // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
  
  
  // 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)
  // File defining groups for Doxygen.
  // Note that group descriptions are (currently) not used.
  
  /*!
  \defgroup access access: get/set coordinate values, make objects, clear geometries, append point(s)
  \defgroup append append: append points to geometries
  \defgroup area area: calculate area of a Geometry
  \defgroup arithmetic arithmetic: arithmetic operations on points
  \defgroup assign assign: assign values to geometries
  \defgroup azimuth azimuth: calculate azimuth of a segment defined by a pair of points
  \defgroup buffer buffer: calculate buffer of a geometry
  \defgroup centroid centroid: calculate centroid (center of gravity) of a geometry
  \defgroup clear clear: clear geometries
  \defgroup compare compare: define compare functors for points
  \defgroup concepts geometry concepts: defines and checks concepts for geometries
  \defgroup convert convert: convert geometries from one type to another
  \defgroup convex_hull convex hull: calculate the convex hull of a geometry
  \defgroup core core: meta-functions for geometry types
  \defgroup correct correct: correct geometries
  \defgroup covered_by covered_by: detect if a geometry is inside or on the border of another geometry, a.o. point-in-polygon (border included)
  \defgroup crosses crosses: detect if two geometries crosses each other
  \defgroup cs coordinate systems
  \defgroup densify densify: add points to geometry, keeping shape
  \defgroup difference difference: difference of two geometries
  \defgroup discrete_frechet_distance discrete_frechet_distance : calculate discrete frechet distance between two geometries
  \defgroup discrete_hausdorff_distance discrete_hausdorff_distance : calculate discrete hausdorff distance between two geometries
  \defgroup disjoint disjoint: detect if geometries are not spatially related
  \defgroup distance distance: calculate distance between two geometries
  \defgroup dsv: stream DSV (Delimiter-Separated Values)
  \defgroup enum enum: enumerations
  \defgroup envelope envelope: calculate envelope (minimum bounding rectangle) of a geometry
  \defgroup equals equals: detect if two geometries are spatially equal
  \defgroup expand expand: add a geometry to a bounding box
  \defgroup exterior_ring exterior_ring: exterior_ring
  \defgroup for_each for_each: apply a functor to each point or segment of a geometry
  \defgroup geometries geometries: geometries provided by default
  \defgroup get get: get geometries
  \defgroup interior_rings interior_rings: interior_rings
  \defgroup intersection intersection: calculate new geometry
  \defgroup intersects intersects: detect if a geometry self-intersects or if two geometries intersect
  \defgroup is_empty is_empty: detect if a geometry is the empty set
  \defgroup is_simple is_simple: detect if a geometry is simple
  \defgroup is_valid is_valid: detect if a geometry is valid
  \defgroup iterators iterators: iterators
  \defgroup length length: calculate length of a linear geometry
  \defgroup line_interpolate line_interpolate: interpolates points on a linestring
  \defgroup make make: construct geometries
  \defgroup num_geometries number of geometries: calculate the number of geometries in a multi-geometry
  \defgroup num_interior_rings number of interior rings: calculate the number of interior rings
  \defgroup num_points number of points: calculate number of points of a geometry
  \defgroup num_segments number of segments: calculate number of segments of a geometry
  \defgroup overlaps overlaps: detect overlap between two geometries
  \defgroup perimeter perimeter: calculate perimeter of a geometry
  \defgroup projection projection: Projection struct's, classes
  \defgroup projections projections: Projections
  \defgroup ranges ranges: ranges
  \defgroup register register: Macros for registration
  \defgroup relate relate: check spatial relation between two geometries
  \defgroup relation relation: calculate spatial relation between two geometries
  \defgroup reverse reverse: reverse a geometry
  \defgroup selected selection: check if a geometry is "selected" by a point
  \defgroup set set: set geometries
  \defgroup simplify simplify: remove points from a geometry, keeping shape (simplification or generalization)
  \defgroup srs srs: Spatial Reference System definition
  \defgroup strategies strategies: strategies
  \defgroup svg svg: Stream SVG (Scalable Vector Graphics)
  \defgroup sym_difference sym_difference: sym_difference of two geometries
  \defgroup touches touches: detect if a geometry self-touches or if two geometries touch
  \defgroup traits traits: adapt geometries
  \defgroup transform transform: apply transformations on geometries
  \defgroup union union: calculate new geometry containing geometries A or B
  \defgroup unique unique: make a geometry unique w.r.t. points,
  \defgroup within within: detect if a geometry is inside another geometry, a.o. point-in-polygon
  \defgroup wkt wkt: parse and stream WKT (Well-Known Text)
  */
  