basegfx/test/clipstate.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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  18  */
  19
  20 #include <sal/types.h>
  21 #include <cppunit/TestAssert.h>
  22 #include <cppunit/TestFixture.h>
  23 #include <cppunit/extensions/HelperMacros.h>
  24
  25 #include <basegfx/tools/b2dclipstate.hxx>
  26 #include <basegfx/range/b2dpolyrange.hxx>
  27 #include <basegfx/polygon/b2dpolygon.hxx>
  28 #include <basegfx/polygon/b2dpolygontools.hxx>
  29 #include <basegfx/polygon/b2dpolypolygontools.hxx>
  30 #include <basegfx/polygon/b2dpolypolygon.hxx>
  31 #include <basegfx/numeric/ftools.hxx>
  32
  33 using namespace ::basegfx;
  34
  35 namespace basegfx2d
  36 {
  37
  38 class clipstate : public CppUnit::TestFixture
  39 {
  40 private:
  41     tools::B2DClipState aUnion1;
  42     tools::B2DClipState aUnion2;
  43     tools::B2DClipState aIntersect;
  44     tools::B2DClipState aXor;
  45     tools::B2DClipState aSubtract;
  46
  47 public:
  48     void setUp() override
  49     {
  50         B2DRange aCenter(100, 100, -100, -100);
  51         B2DRange aNorth(-10, -110, 10, -90);
  52         B2DRange aWest(-110, -10, -90, 10);
  53         B2DRange aSouth(-10, 110, 10, 90);
  54         B2DRange aEast(110, -10, 90, 10);
  55
  56         aUnion1.unionRange(aCenter);
  57         aUnion1.unionRange(aNorth);
  58         aUnion1.unionRange(aWest);
  59         aUnion1.unionRange(aSouth);
  60         aUnion1.unionRange(aEast);
  61
  62         aUnion2.makeNull();
  63         aUnion2.unionRange(aCenter);
  64         aUnion2.unionRange(aNorth);
  65         aUnion2.unionRange(aWest);
  66         aUnion2.unionRange(aSouth);
  67         aUnion2.unionRange(aEast);
  68
  69         aIntersect.intersectRange(aCenter);
  70         aIntersect.intersectRange(aNorth);
  71         aIntersect.intersectRange(aWest);
  72         aIntersect.intersectRange(aSouth);
  73         aIntersect.intersectRange(aEast);
  74
  75         aXor.makeNull();
  76         aXor.xorRange(aCenter);
  77         aXor.xorRange(aNorth);
  78         aXor.xorRange(aWest);
  79         aXor.xorRange(aSouth);
  80         aXor.xorRange(aEast);
  81
  82         aSubtract.intersectRange(aCenter);
  83         aSubtract.subtractRange(aNorth);
  84         aSubtract.subtractRange(aWest);
  85         aSubtract.subtractRange(aSouth);
  86         aSubtract.subtractRange(aEast);
  87     }
  88
  89     void verifyPoly(const char* sName, const char* sSvg, const tools::B2DClipState& toTest)
  90     {
  91 #if OSL_DEBUG_LEVEL > 2
  92         fprintf(stderr, "%s - svg:d=\"%s\"\n",
  93                 sName, OUStringToOString(
  94                     basegfx::tools::exportToSvgD(toTest.getClipPoly(), true, true, false),
  95                     RTL_TEXTENCODING_UTF8).getStr() );
  96 #endif
  97
  98         B2DPolyPolygon aTmp1;
  99         CPPUNIT_ASSERT_MESSAGE(sName,
 100                                tools::importFromSvgD(
 101                                    aTmp1, OUString::createFromAscii(sSvg), false, nullptr));
 102
 103         const OUString aSvg=
 104             tools::exportToSvgD(toTest.getClipPoly(), true, true, false);
 105         B2DPolyPolygon aTmp2;
 106         CPPUNIT_ASSERT_MESSAGE(sName,
 107                                tools::importFromSvgD(
 108                                    aTmp2, aSvg, false, nullptr));
 109
 110         CPPUNIT_ASSERT_MESSAGE(
 111             sName,
 112             aTmp2 == aTmp1);
 113     }
 114
 115     void verifySimpleRange()
 116     {
 117         const char* unionSvg="m100 10v90h-90v10h-20v-10h-90v-90h-10v-20h10v-90h90v-10h20v10h90v90h10v20z";
 118         const char* intersectSvg="m-100 10v-20h10v20zm90 90v-10h20v10zm0-190v-10h20v10zm100 100v-20h10v20z";
 119         const char* xorSvg="m-100 10h10v-20h-10zm90 90h20v-10h-20zm0-190h20v-10h-20zm100 100h10v-20h-10z"
 120                            "m10 0v90h-90v10h-20v-10h-90v-90h-10v-20h10v-90h90v-10h20v10h90v90h10v20z";
 121         const char* subtractSvg="m-90 10v-20h-10v-90h90v10h20v-10h90v90h-10v20h10v90h-90v-10h-20v10h-90v-90z";
 122
 123         CPPUNIT_ASSERT_MESSAGE("cleared clip stays empty under union operation",
 124                                aUnion1.isCleared());
 125         verifyPoly("union", unionSvg, aUnion2);
 126         verifyPoly("intersect", intersectSvg, aIntersect);
 127         verifyPoly("xor", xorSvg, aXor);
 128         verifyPoly("subtract", subtractSvg, aSubtract);
 129     }
 130
 131     void verifyMixedClips()
 132     {
 133         tools::B2DClipState aMixedClip;
 134
 135         const char* unionSvg="m100 10v90h-90v10h-20v-10h-90v-90h-10v-20h10v-90h90v-10h20v10h90v90h10v20z";
 136
 137         B2DPolyPolygon aTmp1;
 138         tools::importFromSvgD(
 139             aTmp1, OUString::createFromAscii(unionSvg), false, nullptr);
 140
 141         aMixedClip.intersectPolyPolygon(aTmp1);
 142         aMixedClip.subtractRange(B2DRange(-20,-150,20,0));
 143         aMixedClip.subtractRange(B2DRange(-150,-20,0,20));
 144         aMixedClip.xorRange(B2DRange(-150,-150,150,150));
 145
 146         const char* mixedClipSvg="m0 0v20h-100v80h90v10h20v-10h90v-90h10v-20h-10v-90h-80v100zm-20-20v-80h-80v80zm-130 170v-300h300v300z";
 147         verifyPoly("mixed clip", mixedClipSvg, aMixedClip);
 148     }
 149
 150     CPPUNIT_TEST_SUITE(clipstate);
 151     CPPUNIT_TEST(verifySimpleRange);
 152     CPPUNIT_TEST(verifyMixedClips);
 153     CPPUNIT_TEST_SUITE_END();
 154 };
 155
 156 CPPUNIT_TEST_SUITE_REGISTRATION(basegfx2d::clipstate);
 157 } // namespace basegfx2d
 158
 159 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */