1 files changed, 77 insertions, 0 deletions
diff --git a/example/point_quad_tree.cpp b/example/point_quad_tree.cpp
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+++ b/example/point_quad_tree.cpp
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+/* -*- 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/point_quad_tree.hpp>
+#include <string>
+#include <iostream>
+
+using std::cout;
+using std::endl;
+
+int main() try
+{
+    typedef ::mdds::point_quad_tree<double, std::string> db_type;
+    db_type db;
+    
+    std::string chicago("Chicago");
+    std::string hamburg("Hamburg");
+    std::string helsinki("Helsinki");
+    std::string london("London");
+    std::string paris("Paris");
+    std::string prague("Prague");
+    std::string shanghai("Shanghai");
+    std::string tokyo("Tokyo");
+
+    // insert cities by longitude and latitude.
+    db.insert(-87.755280, 41.784168, chicago);
+    db.insert(10.000000, 53.633331, hamburg);
+    db.insert(25.049999, 60.250000, helsinki);
+    db.insert(-0.450000, 51.483334, london);
+    db.insert(2.450000, 48.966667, paris);
+    db.insert(14.250000, 50.099998, prague);
+    db.insert(121.433334, 31.166668, shanghai);
+    db.insert(139.850006, 35.633331, tokyo);
+
+    // Perform region search.
+    db_type::search_results results = db.search_region(100, 30, 140, 40);
+
+    // Print out the result of the search.
+    cout << "Cities located between longitudes 100 and 140 east and latitudes 30 and 40 north are:" << endl;
+    for (const auto& res : results)
+    {
+        cout << "  " << res.second
+             << ": (latitude=" << res.first.x
+             << ", longitude=" << res.first.y << ")" << endl;
+    }
+}
+catch (...)
+{
+    return EXIT_FAILURE;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */