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Diffstat (limited to 'example/rtree_medium.cpp')
| -rw-r--r-- | example/rtree_medium.cpp | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/example/rtree_medium.cpp b/example/rtree_medium.cpp new file mode 100644 index 0000000..ef46871 --- /dev/null +++ b/example/rtree_medium.cpp @@ -0,0 +1,113 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/************************************************************************* + * + * Copyright (c) 2020 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 <mdds/rtree.hpp> + +#include <iostream> +#include <fstream> + +// Make the node capacity intentionally small. +struct tiny_traits_2d +{ + constexpr static size_t dimensions = 2; + constexpr static size_t min_node_size = 2; + constexpr static size_t max_node_size = 5; + constexpr static size_t max_tree_depth = 100; + + constexpr static bool enable_forced_reinsertion = true; + constexpr static size_t reinsertion_size = 2; +}; + +using rt_type = mdds::rtree<int, int, tiny_traits_2d>; + +int main() try +{ + // 2D rectangle with the top-left position (x, y), width and height. + struct rect + { + int x; + int y; + int w; + int h; + }; + + std::vector<rect> rects = + { + { 3731, 2433, 1356, 937 }, + { 6003, 3172, 1066, 743 }, + { 4119, 6403, 825, 1949 }, + { 10305, 2315, 776, 548 }, + { 13930, 5468, 1742, 626 }, + { 8614, 4107, 2709, 1793 }, + { 14606, 1887, 5368, 1326 }, + { 17990, 5196, 1163, 1911 }, + { 6728, 7881, 3676, 1210 }, + { 14704, 9789, 5271, 1092 }, + { 4071, 10723, 4739, 898 }, + { 11755, 9010, 1357, 2806 }, + { 13978, 4068, 776, 509 }, + { 17507, 3717, 777, 471 }, + { 20358, 6092, 824, 1093 }, + { 6390, 4535, 1066, 1715 }, + { 13978, 7182, 2516, 1365 }, + { 17942, 11580, 2854, 665 }, + { 9919, 10450, 873, 1716 }, + { 5568, 13215, 7446, 509 }, + { 7357, 15277, 3145, 3234 }, + { 3539, 12592, 631, 509 }, + { 4747, 14498, 825, 626 }, + { 4554, 16913, 969, 1443 }, + { 12771, 14693, 2323, 548 }, + { 18714, 8193, 2372, 586 }, + { 22292, 2743, 487, 1638 }, + { 20987, 17535, 1163, 1249 }, + { 19536, 18859, 632, 431 }, + { 19778, 15394, 1356, 626 }, + { 22969, 15394, 631, 2066 }, + }; + + rt_type tree; + + // Insert the rectangle objects into the tree. + int value = 0; + for (const auto& rect : rects) + tree.insert({{rect.x, rect.y}, {rect.x + rect.w, rect.y + rect.h}}, value++); + + // Export the tree structure as a SVG for visualization. + std::string tree_svg = tree.export_tree(rt_type::export_tree_type::extent_as_svg); + std::ofstream fout("bounds.svg"); + fout << tree_svg; + + return EXIT_SUCCESS; +} +catch (...) +{ + return EXIT_FAILURE; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |