basegfx/test/B2DPolyPolygonTest.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  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.
  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: */