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[strategies] Remove distance() dependency from weighted_length strategy.

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Also add optional CalculationType.
This commit is contained in:
Adam Wulkiewicz 2021-03-11 00:45:08 +01:00
parent edc2aa5051
commit 6eb9e238bc
3 changed files with 21 additions and 15 deletions
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31
include/boost/geometry/strategies/cartesian/centroid_weighted_length.hpp
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@ -21,17 +21,17 @@
#include <boost/math/special_functions/fpclassify.hpp>
#include <boost/numeric/conversion/cast.hpp>
#include <boost/geometry/algorithms/detail/distance/interface.hpp>
#include <boost/geometry/algorithms/detail/distance/point_to_geometry.hpp>
#include <boost/geometry/arithmetic/arithmetic.hpp>
#include <boost/geometry/util/for_each_coordinate.hpp>
#include <boost/geometry/util/select_most_precise.hpp>
#include <boost/geometry/strategies/centroid.hpp>
#include <boost/geometry/strategies/default_distance_result.hpp>
// Helper geometry
#include <boost/geometry/geometries/point.hpp>
#include <boost/geometry/strategies/cartesian/distance_pythagoras.hpp>
#include <boost/geometry/strategies/centroid.hpp>
#include <boost/geometry/util/for_each_coordinate.hpp>
#include <boost/geometry/util/select_most_precise.hpp>
namespace boost { namespace geometry
{
@ -42,19 +42,24 @@ namespace strategy { namespace centroid
template
<
typename Ignored1 = void,
typename Ignored2 = void
typename Ignored2 = void,
typename CalculationType = void
>
class weighted_length
{
private :
typedef geometry::strategy::distance::pythagoras<CalculationType> pythagoras_strategy;
template <typename GeometryPoint, typename ResultPoint>
struct calculation_type
: select_most_precise
{
// Below the distance between two GeometryPoints is calculated.
// ResultPoint is taken into account by passing them together here.
typedef typename pythagoras_strategy::template calculation_type
<
typename default_distance_result<GeometryPoint>::type,
typename default_distance_result<ResultPoint>::type
>
{};
GeometryPoint, ResultPoint
>::type type;
};
template <typename GeometryPoint, typename ResultPoint>
class sums
@ -94,7 +99,7 @@ public :
{
typedef typename calculation_type<GeometryPoint, ResultPoint>::type distance_type;
distance_type const d = geometry::distance(p1, p2);
distance_type const d = pythagoras_strategy::apply(p1, p2);
state.length += d;
typename sums<GeometryPoint, ResultPoint>::work_point weighted_median;

2
include/boost/geometry/strategies/centroid/cartesian.hpp
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@ -48,7 +48,7 @@ struct cartesian
util::is_polylinear<Geometry>::value
> * = nullptr)
{
return strategy::centroid::weighted_length<>();
return strategy::centroid::weighted_length<void, void, CalculationType>();
}
template <typename Geometry>

3
test/cs_undefined/index.cpp
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@ -1,6 +1,6 @@
// Boost.Geometry
// Copyright (c) 2019-2020, Oracle and/or its affiliates.
// Copyright (c) 2019-2021, Oracle and/or its affiliates.
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
@ -11,6 +11,7 @@
// These includes are required for the following code to compile.
// This is probably wrong.
#include <boost/geometry/algorithms/comparable_distance.hpp>
#include <boost/geometry/algorithms/covered_by.hpp>
#include <boost/geometry/algorithms/disjoint.hpp>
#include <boost/geometry/algorithms/equals.hpp>