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ConcaveBoundaryTest unit test
This is from the case I originally got to trigger the problem. We could probably boil it down to something smaller (by temporarily reverting the Orient2d change to make sure the failure still occurs) but this doesn't seem too bloated for a unit test as-is.
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@ -67,6 +67,52 @@ BOOST_AUTO_TEST_CASE(NarrowQuadTest)
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BOOST_AUTO_TEST_CASE(ConcaveBoundaryTest)
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{
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// Concave-by-less-than-epsilon boundaries used to potentially fail
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// during triangulation
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const double eps = 1e-15; // This gave EdgeEvent - null triangle
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std::vector<p2t::Point*> polyline {
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new p2t::Point(0,0),
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new p2t::Point(0.5,eps),
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new p2t::Point(1,0),
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new p2t::Point(1-eps,0.836541),
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new p2t::Point(1,2),
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new p2t::Point(.46,1.46+eps),
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new p2t::Point(0,1),
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new p2t::Point(eps,0.5)
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};
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const double r2o4 = std::sqrt(2.)/4;
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std::vector<p2t::Point*> hole {
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new p2t::Point(0.5+r2o4,0.5),
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new p2t::Point(0.5,0.5+r2o4),
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new p2t::Point(0.5-r2o4,0.5),
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new p2t::Point(0.5-eps,0.5-r2o4)
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};
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std::vector<p2t::Point> interior_points
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{{0.21,0.79},{0.21,0.21},{0.79,0.21}};
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p2t::CDT cdt{ polyline };
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cdt.AddHole(hole);
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for (auto & p : interior_points)
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cdt.AddPoint(&p);
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BOOST_CHECK_NO_THROW(cdt.Triangulate());
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const auto result = cdt.GetTriangles();
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BOOST_REQUIRE_EQUAL(result.size(), 18);
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BOOST_CHECK(p2t::IsDelaunay(result));
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for (const auto p : polyline) {
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delete p;
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}
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for (const auto p : hole) {
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delete p;
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}
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}
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BOOST_AUTO_TEST_CASE(TestbedFilesTest)
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{
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for (const auto& filename : { "custom.dat", "diamond.dat", "star.dat", "test.dat" }) {
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