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19 
20 #include <cppunit/TestAssert.h>
21 #include <cppunit/TestFixture.h>
22 #include <cppunit/extensions/HelperMacros.h>
23 
24 #include <basegfx/polygon/b2dpolypolygon.hxx>
25 #include <basegfx/polygon/b2dtrapezoid.hxx>
26 
27 #include "boxclipper.hxx"
28 
29 namespace basegfx
30 {
31 using ::basegfx2d::getRandomOrdinal;
32 
33 class b2dpolypolygon : public CppUnit::TestFixture
34 {
35 public:
36     // insert your test code here.
testTrapezoidHelper()37     void testTrapezoidHelper()
38     {
39         B2DPolygon aPolygon;
40         // provoke the PointBlockAllocator to exercise the freeIfLast path
41         for (int i = 0; i < 16 * 10; i++)
42         {
43             B2DPoint aPoint(getRandomOrdinal(1000), getRandomOrdinal(1000));
44             aPolygon.append(aPoint);
45         }
46         // scatter some duplicate points in to stress things more.
47         for (int i = 0; i < 16 * 10; i++)
48         {
49             aPolygon.insert(getRandomOrdinal(aPolygon.count() - 1),
50                             aPolygon.getB2DPoint(getRandomOrdinal(aPolygon.count() - 1)));
51         }
52         B2DPolygon aPolygonOffset;
53         // duplicate the polygon and offset it slightly.
54         for (size_t i = 0; i < aPolygon.count(); i++)
55         {
56             B2DPoint aPoint(aPolygon.getB2DPoint(i));
57             aPoint += B2DPoint(0.5 - getRandomOrdinal(1), 0.5 - getRandomOrdinal(1));
58             aPolygonOffset.append(aPoint);
59         }
60         B2DPolyPolygon aPolyPolygon;
61         aPolyPolygon.append(aPolygon);
62         aPolyPolygon.append(aPolygonOffset);
63         B2DTrapezoidVector aVector;
64         basegfx::utils::trapezoidSubdivide(aVector, aPolyPolygon);
65         CPPUNIT_ASSERT_MESSAGE("more than zero sub-divided trapezoids", !aVector.empty());
66     }
67 
68     // Change the following lines only, if you add, remove or rename
69     // member functions of the current class,
70     // because these macros are need by auto register mechanism.
71 
72     CPPUNIT_TEST_SUITE(b2dpolypolygon);
73     CPPUNIT_TEST(testTrapezoidHelper);
74     CPPUNIT_TEST_SUITE_END();
75 }; // class b2dpolypolygon
76 
77 } // namespace basegfx
78 
79 CPPUNIT_TEST_SUITE_REGISTRATION(basegfx::b2dpolypolygon);
80 
81 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
82