basegfx/test/clipstate.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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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/utils/b2dclipstate.hxx>
  25 #include <basegfx/polygon/b2dpolypolygontools.hxx>
  26 #include <basegfx/polygon/b2dpolypolygon.hxx>
  27
  28 using namespace ::basegfx;
  29
  30 namespace basegfx2d
  31 {
  32
  33 class clipstate : public CppUnit::TestFixture
  34 {
  35 private:
  36     utils::B2DClipState aUnion1;
  37     utils::B2DClipState aUnion2;
  38     utils::B2DClipState aIntersect;
  39     utils::B2DClipState aXor;
  40     utils::B2DClipState aSubtract;
  41
  42 public:
  43     void setUp() override
  44     {
  45         B2DRange aCenter(100, 100, -100, -100);
  46         B2DRange aNorth(-10, -110, 10, -90);
  47         B2DRange aWest(-110, -10, -90, 10);
  48         B2DRange aSouth(-10, 110, 10, 90);
  49         B2DRange aEast(110, -10, 90, 10);
  50
  51         aUnion1.unionRange(aCenter);
  52         aUnion1.unionRange(aNorth);
  53         aUnion1.unionRange(aWest);
  54         aUnion1.unionRange(aSouth);
  55         aUnion1.unionRange(aEast);
  56
  57         aUnion2.makeNull();
  58         aUnion2.unionRange(aCenter);
  59         aUnion2.unionRange(aNorth);
  60         aUnion2.unionRange(aWest);
  61         aUnion2.unionRange(aSouth);
  62         aUnion2.unionRange(aEast);
  63
  64         aIntersect.intersectRange(aCenter);
  65         aIntersect.intersectRange(aNorth);
  66         aIntersect.intersectRange(aWest);
  67         aIntersect.intersectRange(aSouth);
  68         aIntersect.intersectRange(aEast);
  69
  70         aXor.makeNull();
  71         aXor.xorRange(aCenter);
  72         aXor.xorRange(aNorth);
  73         aXor.xorRange(aWest);
  74         aXor.xorRange(aSouth);
  75         aXor.xorRange(aEast);
  76
  77         aSubtract.intersectRange(aCenter);
  78         aSubtract.subtractRange(aNorth);
  79         aSubtract.subtractRange(aWest);
  80         aSubtract.subtractRange(aSouth);
  81         aSubtract.subtractRange(aEast);
  82     }
  83
  84     void verifyPoly(const char* sName, const char* sSvg, const utils::B2DClipState& toTest) const
  85     {
  86 #if OSL_DEBUG_LEVEL > 2
  87         fprintf(stderr, "%s - svg:d=\"%s\"\n",
  88                 sName, OUStringToOString(
  89                     basegfx::utils::exportToSvgD(toTest.getClipPoly(), true, true, false),
  90                     RTL_TEXTENCODING_UTF8).getStr() );
  91 #endif
  92
  93         B2DPolyPolygon aTmp1;
  94         CPPUNIT_ASSERT_MESSAGE(sName,
  95                                utils::importFromSvgD(
  96                                    aTmp1, OUString::createFromAscii(sSvg), false, nullptr));
  97
  98         const OUString aSvg=
  99             utils::exportToSvgD(toTest.getClipPoly(), true, true, false);
 100         B2DPolyPolygon aTmp2;
 101         CPPUNIT_ASSERT_MESSAGE(sName,
 102                                utils::importFromSvgD(
 103                                    aTmp2, aSvg, false, nullptr));
 104
 105         CPPUNIT_ASSERT_EQUAL_MESSAGE(
 106             sName,
 107             aTmp1, aTmp2);
 108     }
 109
 110     void verifySimpleRange()
 111     {
 112         const char* const unionSvg="m100 10v90h-90v10h-20v-10h-90v-90h-10v-20h10v-90h90v-10h20v10h90v90h10v20z";
 113         const char* const intersectSvg="m-100 10v-20h10v20zm90 90v-10h20v10zm0-190v-10h20v10zm100 100v-20h10v20z";
 114         const char* const xorSvg="m-100 10h10v-20h-10zm90 90h20v-10h-20zm0-190h20v-10h-20zm100 100h10v-20h-10z"
 115                            "m10 0v90h-90v10h-20v-10h-90v-90h-10v-20h10v-90h90v-10h20v10h90v90h10v20z";
 116         const char* const subtractSvg="m-90 10v-20h-10v-90h90v10h20v-10h90v90h-10v20h10v90h-90v-10h-20v10h-90v-90z";
 117
 118         CPPUNIT_ASSERT_MESSAGE("cleared clip stays empty under union operation",
 119                                aUnion1.isCleared());
 120         verifyPoly("union", unionSvg, aUnion2);
 121         verifyPoly("intersect", intersectSvg, aIntersect);
 122         verifyPoly("xor", xorSvg, aXor);
 123         verifyPoly("subtract", subtractSvg, aSubtract);
 124     }
 125
 126     void verifyMixedClips()
 127     {
 128         utils::B2DClipState aMixedClip;
 129
 130         static constexpr OUString unionSvg=u"m100 10v90h-90v10h-20v-10h-90v-90h-10v-20h10v-90h90v-10h20v10h90v90h10v20z"_ustr;
 131
 132         B2DPolyPolygon aTmp1;
 133         CPPUNIT_ASSERT(utils::importFromSvgD(aTmp1, unionSvg, false, nullptr));
 134
 135         aMixedClip.intersectPolyPolygon(aTmp1);
 136         aMixedClip.subtractRange(B2DRange(-20,-150,20,0));
 137         aMixedClip.subtractRange(B2DRange(-150,-20,0,20));
 138         aMixedClip.xorRange(B2DRange(-150,-150,150,150));
 139
 140         const char* const mixedClipSvg="m0 0v20h-100v80h90v10h20v-10h90v-90h10v-20h-10v-90h-80v100zm-20-20v-80h-80v80zm-130 170v-300h300v300z";
 141         verifyPoly("mixed clip", mixedClipSvg, aMixedClip);
 142     }
 143
 144     CPPUNIT_TEST_SUITE(clipstate);
 145     CPPUNIT_TEST(verifySimpleRange);
 146     CPPUNIT_TEST(verifyMixedClips);
 147     CPPUNIT_TEST_SUITE_END();
 148 };
 149
 150 CPPUNIT_TEST_SUITE_REGISTRATION(basegfx2d::clipstate);
 151 } // namespace basegfx2d
 152
 153 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */