Add robust cartesian side and in_circle predicates.

extensions/test/Jamfile.v2

@@ -27,4 +27,4 @@ build-project algorithms ;
 build-project gis ;
 build-project iterators ;
 build-project nsphere ;
-
+build-project triangulation ;

extensions/test/triangulation/Jamfile.v2

@@ -0,0 +1,12 @@
+# Boost.Geometry (aka GGL, Generic Geometry Library)
+#
+# 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)
+
+test-suite boost-geometry-extensions-triangulation
+    :
+    [ run side_robust.cpp ]
+    [ run in_circle_robust.cpp ]
+    ;
+

extensions/test/triangulation/in_circle_robust.cpp

@@ -0,0 +1,56 @@
+// Boost.Geometry (aka GGL, Generic Geometry Library)
+// Unit Test
+
+// Copyright (c) 2019 Tinko Bartels, Berlin, Germany.
+
+// 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 <geometry_test_common.hpp>
+
+#include <boost/geometry/geometries/point_xy.hpp>
+#include <boost/geometry/extensions/triangulation/strategies/cartesian/in_circle_robust.hpp>
+
+template <typename P>
+void test_all()
+{
+    typedef bg::strategy::in_circle::in_circle_robust<double, 2> inc2;
+    typedef bg::strategy::in_circle::in_circle_robust<double, 1> inc1;
+    typedef bg::strategy::in_circle::in_circle_robust<double, 0> inc0;
+
+    P col1(0.0, 0.0), col2(1.0, 0.0), col3(0.0, 1.0);
+    P in(0.5,0.5) , on(1.0, 0.0), out(-0.5, -0.5);
+    int in2 = inc2::apply(col1, col2, col3, in);
+    BOOST_CHECK_GT(in2, 0);
+    int in1 = inc1::apply(col1, col2, col3, in);
+    BOOST_CHECK_GT(in1, 0);
+    int in0 = inc0::apply(col1, col2, col3, in);
+    BOOST_CHECK_GT(in0, 0);
+
+    int on2 = inc2::apply(col1, col2, col3, on);
+    BOOST_CHECK_EQUAL(on2, 0);
+    int on1 = inc1::apply(col1, col2, col3, on);
+    BOOST_CHECK_EQUAL(on1, 0);
+    int on0 = inc0::apply(col1, col2, col3, on);
+    BOOST_CHECK_EQUAL(on0, 0);
+
+    int out2 = inc2::apply(col1, col2, col3, out);
+    BOOST_CHECK_GT(0, out2);
+    int out1 = inc1::apply(col1, col2, col3, out);
+    BOOST_CHECK_GT(0, out1);
+    int out0 = inc0::apply(col1, col2, col3, out);
+    BOOST_CHECK_GT(0, out0);
+
+    P hard1(0, 0), hard2(1e20, 0), hard3(0, 1e20);
+    P inhard(0.5, 0.5);
+    int hardr  = inc2::apply(hard1, hard2, hard3, inhard);
+    BOOST_CHECK_GT(hardr, 0);
+}
+
+
+int test_main(int, char* [])
+{
+    test_all<bg::model::d2::point_xy<double> >();
+    return 0;
+}

extensions/test/triangulation/side_robust.cpp

@@ -0,0 +1,59 @@
+// Boost.Geometry (aka GGL, Generic Geometry Library)
+// Unit Test
+
+// Copyright (c) 2019 Tinko Bartels, Berlin, Germany.
+
+// 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 <geometry_test_common.hpp>
+
+#include <boost/geometry/geometries/point_xy.hpp>
+#include <boost/geometry/extensions/triangulation/strategies/cartesian/side_robust.hpp>
+
+template <typename P>
+void test_all()
+{
+    typedef bg::strategy::side::side_robust<double, 3> side3;
+    typedef bg::strategy::side::side_robust<double, 2> side2;
+    typedef bg::strategy::side::side_robust<double, 1> side1;
+    typedef bg::strategy::side::side_robust<double, 0> side0;
+
+    P col1(1.0, 1.0), col2(2.0, 2.0), col3(3.0, 3.0);
+    int col3r = side3::apply(col1, col2, col3);
+    BOOST_CHECK_EQUAL(0, col3r);
+    int col2r = side2::apply(col1, col2, col3);
+    BOOST_CHECK_EQUAL(0, col2r);
+    int col1r = side1::apply(col1, col2, col3);
+    BOOST_CHECK_EQUAL(0, col1r);
+    int col0r = side0::apply(col1, col2, col3);
+    BOOST_CHECK_EQUAL(0, col0r);
+
+    P easy1(0.0, 0.0), easy2(1.0, 1.0), easy3(0.0, 1.0);
+    int easy3r = side3::apply(easy1, easy2, easy3);
+    BOOST_CHECK_GT(easy3r, 0);
+    int easy2r = side2::apply(easy1, easy2, easy3);
+    BOOST_CHECK_GT(easy2r, 0);
+    int easy1r = side1::apply(easy1, easy2, easy3);
+    BOOST_CHECK_GT(easy1r, 0);
+    int easy0r = side0::apply(easy1, easy2, easy3);
+    BOOST_CHECK_GT(easy0r, 0);
+
+    P medium1(1.0, 1.0), medium2(1.0e20, 1.0e20), medium3(1.0, 2.0);
+    int medium3r = side3::apply(medium1, medium2, medium3);
+    BOOST_CHECK_GT(medium3r, 0);
+    int medium2r = side2::apply(medium1, medium2, medium3);
+    BOOST_CHECK_GT(medium2r, 0);
+
+    P hard1(1.0e-20, 1.0e-20), hard2(1.0e20, 1.0e20), hard3(1.0, 2.0);
+    int hard3r = side3::apply(hard1, hard2, hard3);
+    BOOST_CHECK_GT(hard3r, 0);
+}
+
+
+int test_main(int, char* [])
+{
+    test_all<bg::model::d2::point_xy<double> >();
+    return 0;
+}