FM / strategies

/usr/include/boost/geometry/strategies

Name	Size	Mode	Actions
agnostic/	-	0755	rm
cartesian/	-	0755	rm
concepts/	-	0755	rm
geographic/	-	0755	rm
spherical/	-	0755	rm
transform/	-	0755	rm
area.hpp	2031	0644	edit dl rm
area_result.hpp	3205	0644	edit dl rm
azimuth.hpp	1203	0644	edit dl rm
buffer.hpp	2425	0644	edit dl rm
centroid.hpp	1660	0644	edit dl rm
comparable_distance_result.hpp	5339	0644	edit dl rm
compare.hpp	5188	0644	edit dl rm
convex_hull.hpp	1564	0644	edit dl rm
covered_by.hpp	3486	0644	edit dl rm
default_area_result.hpp	1287	0644	edit dl rm
default_comparable_distance_result.hpp	1552	0644	edit dl rm
default_distance_result.hpp	1475	0644	edit dl rm
default_length_result.hpp	2493	0644	edit dl rm
default_strategy.hpp	1270	0644	edit dl rm
densify.hpp	798	0644	edit dl rm
disjoint.hpp	2644	0644	edit dl rm
distance.hpp	2921	0644	edit dl rm
distance_result.hpp	6443	0644	edit dl rm
envelope.hpp	1257	0644	edit dl rm
expand.hpp	1128	0644	edit dl rm
index.hpp	1574	0644	edit dl rm
intersection.hpp	1222	0644	edit dl rm
intersection_result.hpp	1995	0644	edit dl rm
intersection_strategies.hpp	3106	0644	edit dl rm
io.hpp	806	0644	edit dl rm
line_interpolate.hpp	850	0644	edit dl rm
normalize.hpp	8399	0644	edit dl rm
point_order.hpp	862	0644	edit dl rm
relate.hpp	4656	0644	edit dl rm
side.hpp	1585	0644	edit dl rm
side_info.hpp	4511	0644	edit dl rm
strategies.hpp	8628	0644	edit dl rm
strategy_transform.hpp	16469	0644	edit dl rm
tags.hpp	1655	0644	edit dl rm
transform.hpp	1859	0644	edit dl rm
within.hpp	3457	0644	edit dl rm

Edit: /usr/include/boost/geometry/strategies/buffer.hpp (2425B)

// Boost.Geometry (aka GGL, Generic Geometry Library)

// 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)

#ifndef BOOST_GEOMETRY_STRATEGIES_CARTESIAN_BUFFER_HPP
#define BOOST_GEOMETRY_STRATEGIES_CARTESIAN_BUFFER_HPP

namespace boost { namespace geometry
{

namespace strategy { namespace buffer
{

A Buffer-join strategy gets 4 input points.
   On the two consecutive segments s1 and s2 (joining at vertex v):

The lines from parallel at s1, s2 (at buffer-distance) end/start
   in two points perpendicular to the segments: p1 and p2.
   These parallel lines interesct in point ip

(s2)
              |
              |
              ^
              |
        (p2)  |(v)
        *     +----<--- (s1)

x(ip) *(p1)

So, in clockwise order:
        v : vertex point
        p1: perpendicular on left side of segment1<1> (perp1)
        ip: intersection point
        p2: perpendicular on left side of segment2<0> (perp2)
*/

/*!
\brief Enumerates options for side of buffer (left/right w.r.t. directed
    segment)
\ingroup enum
\details Around a linestring, a buffer can be defined left or right.
    Around a polygon, assumed clockwise internally,
    a buffer is either on the left side (inflates the polygon), or on the
    right side (deflates the polygon)
*/
enum buffer_side_selector { buffer_side_left, buffer_side_right };

/*!
\brief Enumerates types of pieces (parts of buffer) around geometries
\ingroup enum
*/
enum piece_type
{
    buffered_segment,
    buffered_join,
    buffered_round_end,
    buffered_flat_end,
    buffered_point,
    buffered_concave,   // always on the inside
    piece_type_unknown
};

/*!
\brief Enumerates types of joins
\ingroup enum
*/
enum join_selector
{
    join_convex,
    join_concave,
    join_continue, // collinear, next segment touches previous segment
    join_spike     // collinear, with overlap, next segment goes back
};

/*!
\brief Enumerates types of result codes from buffer strategies
\ingroup enum
*/
enum result_code
{
    result_normal,
    result_error_numerical,
    result_no_output
};

}} // namespace strategy::buffer

}} // namespace boost::geometry

#endif // BOOST_GEOMETRY_STRATEGIES_CARTESIAN_BUFFER_HPP

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