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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* Copyright (c) 2021 Kohei Yoshida
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
************************************************************************/
#include "test_global.hpp" // This must be the first header to be included.
#include "test_global_rtree.hpp"
using mdds::rtree;
using std::cout;
using std::endl;
void rtree_test_intersection()
{
MDDS_TEST_FUNC_SCOPE;
using rt_type = rtree<int16_t, std::string>;
using bounding_box = rt_type::extent_type;
using mdds::detail::rtree::calc_intersection;
using mdds::detail::rtree::calc_linear_intersection;
struct check
{
bounding_box bb1;
bounding_box bb2;
int16_t expected_length1;
int16_t expected_length2;
};
std::vector<check> checks = {
// bounding box 1 bounding box 2
{{{0, 0}, {3, 6}}, {{1, 2}, {7, 5}}, 2, 3}, {{{3, 2}, {7, 10}}, {{1, 10}, {10, 11}}, 4, 0},
{{{3, 2}, {7, 10}}, {{1, 9}, {10, 11}}, 4, 1}, {{{3, 2}, {7, 6}}, {{5, 4}, {11, 8}}, 2, 2},
{{{-2, -8}, {2, -5}}, {{0, -10}, {8, -1}}, 2, 3}, {{{2, 2}, {20, 12}}, {{5, 6}, {16, 9}}, 11, 3},
{{{0, 0}, {6, 6}}, {{0, 0}, {2, 3}}, 2, 3},
};
for (const check& c : checks)
{
int16_t length1 = calc_linear_intersection<bounding_box>(0, c.bb1, c.bb2);
TEST_ASSERT(length1 == c.expected_length1);
int16_t length2 = calc_linear_intersection<bounding_box>(1, c.bb1, c.bb2);
TEST_ASSERT(length2 == c.expected_length2);
int16_t area = calc_intersection<bounding_box>(c.bb1, c.bb2);
int16_t expected_area = c.expected_length1 * c.expected_length2;
TEST_ASSERT(area == expected_area);
// Swap the boxes and run the same tests. We should get the same results.
length1 = calc_linear_intersection<bounding_box>(0, c.bb2, c.bb1);
TEST_ASSERT(length1 == c.expected_length1);
length2 = calc_linear_intersection<bounding_box>(1, c.bb2, c.bb1);
TEST_ASSERT(length2 == c.expected_length2);
area = calc_intersection<bounding_box>(c.bb2, c.bb1);
TEST_ASSERT(area == expected_area);
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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