ceph/src/boost/libs/geometry/include/boost/geometry/strategies/intersection_result.hpp

   1 // Boost.Geometry (aka GGL, Generic Geometry Library)
   2
   3 // Copyright (c) 2007-2015 Barend Gehrels, Amsterdam, the Netherlands.
   4
   5 // This file was modified by Oracle on 2015, 2016.
   6 // Modifications copyright (c) 2015-2016 Oracle and/or its affiliates.
   7 // Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
   8
   9 // Use, modification and distribution is subject to the Boost Software License,
  10 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
  11 // http://www.boost.org/LICENSE_1_0.txt)
  12
  13 #ifndef BOOST_GEOMETRY_STRATEGIES_INTERSECTION_RESULT_HPP
  14 #define BOOST_GEOMETRY_STRATEGIES_INTERSECTION_RESULT_HPP
  15
  16 #if defined(HAVE_MATRIX_AS_STRING)
  17 #include <string>
  18 #endif
  19
  20 #include <cstddef>
  21
  22
  23
  24 namespace boost { namespace geometry
  25 {
  26
  27 template <typename SegmentRatio>
  28 struct fraction_type
  29 {
  30     SegmentRatio robust_ra; // TODO this can be renamed now to "ra"
  31     SegmentRatio robust_rb;
  32
  33     bool initialized;
  34     inline fraction_type()
  35         : initialized(false)
  36     {}
  37
  38     template <typename Info>
  39     inline void assign(Info const& info)
  40     {
  41         initialized = true;
  42         robust_ra = info.robust_ra;
  43         robust_rb = info.robust_rb;
  44     }
  45
  46     inline void assign(SegmentRatio const& a, SegmentRatio const& b)
  47     {
  48         initialized = true;
  49         robust_ra = a;
  50         robust_rb = b;
  51     }
  52
  53 };
  54
  55 //
  56 /*!
  57 \brief return-type for segment-intersection
  58 \note Set in intersection_points.hpp, from segment_intersection_info
  59 */
  60 template <typename Point, typename SegmentRatio>
  61 struct segment_intersection_points
  62 {
  63     std::size_t count; // The number of intersection points
  64
  65     // TODO: combine intersections and fractions in one struct
  66     Point intersections[2];
  67     fraction_type<SegmentRatio> fractions[2];
  68     typedef Point point_type;
  69
  70     segment_intersection_points()
  71         : count(0)
  72     {}
  73 };
  74
  75 }} // namespace boost::geometry
  76
  77
  78 #endif // BOOST_GEOMETRY_STRATEGIES_INTERSECTION_RESULT_HPP