1 files changed, 93 insertions, 0 deletions
diff --git a/test/rtree/test_geometry.cpp b/test/rtree/test_geometry.cpp
new file mode 100644
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--- /dev/null
+++ b/test/rtree/test_geometry.cpp
@@ -0,0 +1,93 @@
+/* -*- 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_area_enlargement()
+{
+    stack_printer __stack_printer__("::rtree_test_area_enlargement");
+    using rt_type = rtree<int16_t, std::string>;
+    using bounding_box = rt_type::extent_type;
+    using mdds::detail::rtree::calc_area_enlargement;
+
+    struct check
+    {
+        bounding_box host;
+        bounding_box guest;
+        int16_t expected_area;
+    };
+
+    std::vector<check> checks = {
+        {{{0, 0}, {2, 2}}, {{2, 2}, {3, 3}}, 5}, // 3x3 - 2x2 = 5
+        {{{0, 0}, {2, 2}}, {{0, 1}, {1, 2}}, 0}, // no enlargement
+        {{{0, 0}, {3, 3}}, {{-3, 1}, {7, 2}}, 21}, // 10x3 - 3x3 = 21
+        {{{0, 0}, {0, 0}}, {{-1, -1}, {0, 0}}, 1}, // 1x1 = 1
+        {{{0, 0}, {1, 1}}, {{-4, -3}, {-3, -2}}, 19}, // 5x4 - 1x1 = 19
+    };
+
+    for (const check& c : checks)
+    {
+        int16_t area = calc_area_enlargement(c.host, c.guest);
+        assert(area == c.expected_area);
+    }
+}
+
+void rtree_test_center_point()
+{
+    stack_printer __stack_printer__("::rtree_test_center_point");
+    using rt_type = rtree<int16_t, std::string, tiny_trait_2d>;
+    using mdds::detail::rtree::get_center_point;
+    using extent_type = rt_type::extent_type;
+    using point_type = rt_type::point_type;
+
+    struct test_case
+    {
+        extent_type extent;
+        point_type expected;
+    };
+
+    std::vector<test_case> tcs = {
+        {{{0, 0}, {2, 2}}, {1, 1}},
+        {{{-2, -4}, {2, 4}}, {0, 0}},
+        {{{3, 5}, {8, 10}}, {5, 7}},
+    };
+
+    for (const test_case& tc : tcs)
+    {
+        cout << "extent: " << tc.extent.to_string() << endl;
+        auto pt = get_center_point(tc.extent);
+        assert(pt == tc.expected);
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */