Added tests for buffer

Added test for remove_spikes Small changes in tests for differences, sectionalize Enhanced write_svg in the sense that .x()/.y() are removed, plus using max to avoid empty nonvisible boxes [SVN r61020]
2026-02-20 02:42:10 +00:00 · 2010-04-03 13:39:20 +00:00
parent c1f1e7b816
commit 158d3424c2
18 changed files with 2058 additions and 39 deletions
--- a/test/extensions/algorithms/remove_spikes.cpp
+++ b/test/extensions/algorithms/remove_spikes.cpp
@@ -0,0 +1,103 @@
+// Boost.Geometry (aka GGL, Generic Geometry Library) test file
+//
+// Copyright Barend Gehrels 2010, Geodan, Amsterdam, the Netherlands
+// Use, modification and distribution is subject to the Boost Software License,
+// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+#include <iostream>
+#include <iomanip>
+#include <string>
+
+
+#include <geometry_test_common.hpp>
+
+#include <boost/geometry/strategies/strategies.hpp>
+
+#include <boost/geometry/extensions/algorithms/remove_spikes.hpp>
+#include <boost/geometry/algorithms/num_points.hpp>
+#include <boost/geometry/algorithms/unique.hpp>
+
+#include <boost/geometry/extensions/gis/io/wkt/read_wkt.hpp>
+#include <boost/geometry/extensions/gis/io/wkt/write_wkt.hpp>
+
+
+
+#if defined(TEST_WITH_SVG)
+#  include <boost/geometry/extensions/io/svg/svg_mapper.hpp>
+#endif
+
+template <typename Geometry>
+inline void test_remove_spikes(std::string const& id, 
+            Geometry const& geometry, 
+            int expected_count)
+{
+    namespace bg = boost::geometry;
+
+    typedef typename bg::point_type<Geometry>::type point_type;
+
+    Geometry processed = geometry;
+    //bg::remove_spikes(processed, bg::remove_elongated_spikes<point_type>());
+    bg::remove_spikes(processed, bg::remove_by_normalized<point_type>());
+    bg::unique(processed);
+    
+
+    int detected = bg::num_points(processed);
+
+    BOOST_CHECK_MESSAGE(detected == expected_count,
+        "remove_spikes: " << bg::wkt(geometry)
+        << " -> Expected: " << expected_count
+        << " detected: " << detected);
+
+
+#if defined(TEST_WITH_SVG)
+    {
+        std::ostringstream filename;
+        filename << "remove_spikes_" << id << ".svg";
+        std::ofstream svg(filename.str().c_str());
+
+        bg::svg_mapper<typename bg::point_type<Geometry>::type> mapper(svg, 500, 500);
+        mapper.add(geometry);
+        mapper.map(geometry, "opacity:0.6;fill:rgb(0,0,255);stroke:rgb(0,0,255);stroke-width:1");
+        mapper.map(processed, "opacity:0.6;fill:rgb(0,255,0);stroke:rgb(0,255,0);stroke-width:1");
+    }
+#endif
+}
+
+template <typename Geometry>
+void test_geometry(std::string const& id, std::string const& wkt, int expected_count)
+{
+    Geometry geometry;
+    boost::geometry::read_wkt(wkt, geometry);
+    test_remove_spikes(id, geometry, expected_count);
+}
+
+
+#if ! defined(GGL_TEST_MULTI)
+
+template <typename P>
+void test_all()
+{
+    typedef boost::geometry::linear_ring<P> ring;
+    typedef boost::geometry::polygon<P> polygon;
+
+    test_geometry<polygon>("box", 
+            "POLYGON((0 0,0 4,4 4,4 0,0 0))", 5);
+    test_geometry<polygon>("spike_right", 
+            "POLYGON((0 0,0 4,4 4,4 2,6 2,4 2,4 0,0 0))", 6);
+    test_geometry<polygon>("spike_at_first", 
+            "POLYGON((0 0,-1 3,0 0,0 4,4 4,4 0,0 0))", 5);
+    test_geometry<polygon>("spike_at_closing", 
+            "POLYGON((-1 0,0 0,0 4,4 4,4 0,0 0,-1 0))", 5);
+    test_geometry<polygon>("double_spike", 
+            "POLYGON((0 0,0 4,4 4,4 2,6 2,5 2,4 2,4 0,0 0))", 6);
+    test_geometry<polygon>("three_double_spike", 
+            "POLYGON((0 0,0 4,4 4,4 2,6 2,5 2,4.5 2,4 2,4 0,0 0))", 6);
+}
+
+int test_main(int, char* [])
+{
+    test_all<boost::geometry::point_xy<double> >();
+    return 0;
+}
+#endif