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Merge pull request #1027 from awulkiew/feature/buffer

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Allow const inputs in buffer()
This commit is contained in:
Adam Wulkiewicz
2022-06-29 22:55:01 +02:00
committed by GitHub
parent d8d6162404 959a5d2d6e
commit 6402c9d043
4 changed files with 125 additions and 24 deletions
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72
test/algorithms/buffer/buffer_polygon.cpp
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@@ -3,8 +3,8 @@
// Copyright (c) 2012-2019 Barend Gehrels, Amsterdam, the Netherlands.
// This file was modified by Oracle on 2016-2021.
// Modifications copyright (c) 2016-2021, Oracle and/or its affiliates.
// This file was modified by Oracle on 2016-2022.
// Modifications copyright (c) 2016-2022, Oracle and/or its affiliates.
// Contributed and/or modified by Adam Wulkiewicz, on behalf of Oracle
// Use, modification and distribution is subject to the Boost Software License,
@@ -13,6 +13,9 @@
#include "test_buffer.hpp"
#include <boost/geometry/geometries/register/ring.hpp>
#include <boost/geometry/geometries/register/linestring.hpp>
static std::string const simplex
= "POLYGON ((0 0,1 5,6 1,0 0))";
@@ -842,6 +845,69 @@ void test_mixed()
simplex, join_round, end_flat, 47.4831, 1.5);
}
template <typename P>
struct triangle_ring
{
triangle_ring(P const& p0, P const& p1, P const& p2)
: m_arr{p0, p1, p2, p0}
{}
using iterator = P const*;
using const_iterator = P const*;
const_iterator begin() const { return m_arr; }
const_iterator end() const { return m_arr + 4; }
private:
P m_arr[4];
};
template <typename P>
struct segment_linestring
{
segment_linestring(P const& p0, P const& p1)
: m_arr{p0, p1}
{}
using iterator = P const*;
using const_iterator = P const*;
const_iterator begin() const { return m_arr; }
const_iterator end() const { return m_arr + 2; }
private:
P m_arr[2];
};
BOOST_GEOMETRY_REGISTER_RING_TEMPLATED(triangle_ring)
BOOST_GEOMETRY_REGISTER_LINESTRING_TEMPLATED(segment_linestring)
void test_different()
{
using point_t = bg::model::point<default_test_type, 2, bg::cs::cartesian>;
using segment_t = segment_linestring<point_t>;
using triangle_t = triangle_ring<point_t>;
using polygon_t = bg::model::polygon<point_t>;
using mpolygon_t = bg::model::multi_polygon<polygon_t>;
bg::strategy::buffer::distance_symmetric<double> distance_symmetric(1.5);
bg::strategy::buffer::side_straight side_straight;
bg::strategy::buffer::join_round join_round(100);
bg::strategy::buffer::end_flat end_flat;
bg::strategy::buffer::point_circle point_circle(100);
{
triangle_t in{{0, 0}, {1, 5}, {6, 1}};
mpolygon_t out;
bg::buffer(in, out, distance_symmetric, side_straight, join_round, end_flat, point_circle);
double a = bg::area(out);
BOOST_CHECK_CLOSE(a, 47.9408, 0.1);
}
{
segment_t in{{0, 0}, {1, 1}};
mpolygon_t out;
bg::buffer(in, out, distance_symmetric, side_straight, join_round, end_flat, point_circle);
double a = bg::area(out);
BOOST_CHECK_CLOSE(a, 4.2426, 0.1);
}
}
int test_main(int, char* [])
{
BoostGeometryWriteTestConfiguration();
@@ -876,5 +942,7 @@ int test_main(int, char* [])
BoostGeometryWriteExpectedFailures(2, 1, 9, 1);
#endif
test_different();
return 0;
}