/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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#include <cppunit/TestAssert.h>
#include <cppunit/TestFixture.h>
#include <cppunit/extensions/HelperMacros.h>
#include <basegfx/utils/b2dclipstate.hxx>
#include <basegfx/polygon/b2dpolypolygontools.hxx>
#include <basegfx/polygon/b2dpolypolygon.hxx>
using namespace ::basegfx;
namespace basegfx2d
{
class clipstate : public CppUnit::TestFixture
{
private :
utils::B2DClipState aUnion1;
utils::B2DClipState aUnion2;
utils::B2DClipState aIntersect;
utils::B2DClipState aXor;
utils::B2DClipState aSubtract;
public :
void setUp() override
{
B2DRange aCenter(100 , 100 , -100 , -100 );
B2DRange aNorth(-10 , -110 , 10 , -90 );
B2DRange aWest(-110 , -10 , -90 , 10 );
B2DRange aSouth(-10 , 110 , 10 , 90 );
B2DRange aEast(110 , -10 , 90 , 10 );
aUnion1.unionRange(aCenter);
aUnion1.unionRange(aNorth);
aUnion1.unionRange(aWest);
aUnion1.unionRange(aSouth);
aUnion1.unionRange(aEast);
aUnion2.makeNull();
aUnion2.unionRange(aCenter);
aUnion2.unionRange(aNorth);
aUnion2.unionRange(aWest);
aUnion2.unionRange(aSouth);
aUnion2.unionRange(aEast);
aIntersect.intersectRange(aCenter);
aIntersect.intersectRange(aNorth);
aIntersect.intersectRange(aWest);
aIntersect.intersectRange(aSouth);
aIntersect.intersectRange(aEast);
aXor.makeNull();
aXor.xorRange(aCenter);
aXor.xorRange(aNorth);
aXor.xorRange(aWest);
aXor.xorRange(aSouth);
aXor.xorRange(aEast);
aSubtract.intersectRange(aCenter);
aSubtract.subtractRange(aNorth);
aSubtract.subtractRange(aWest);
aSubtract.subtractRange(aSouth);
aSubtract.subtractRange(aEast);
}
void verifyPoly(const char * sName, const char * sSvg, const utils::B2DClipState& toTest) const
{
#if OSL_DEBUG_LEVEL > 2
fprintf(stderr, "%s - svg:d=\" %s\"\n" ,
sName, OUStringToOString(
basegfx::utils::exportToSvgD(toTest.getClipPoly(), true , true , false ),
RTL_TEXTENCODING_UTF8).getStr() );
#endif
B2DPolyPolygon aTmp1;
CPPUNIT_ASSERT_MESSAGE(sName,
utils::importFromSvgD(
aTmp1, OUString::createFromAscii(sSvg), false , nullptr));
const OUString aSvg=
utils::exportToSvgD(toTest.getClipPoly(), true , true , false );
B2DPolyPolygon aTmp2;
CPPUNIT_ASSERT_MESSAGE(sName,
utils::importFromSvgD(
aTmp2, aSvg, false , nullptr));
CPPUNIT_ASSERT_EQUAL_MESSAGE(
sName,
aTmp1, aTmp2);
}
void verifySimpleRange()
{
const char * const unionSvg="m100 10v90h-90v10h-20v-10h-90v-90h-10v-20h10v-90h90v-10h20v10h90v90h10v20z" ;
const char * const intersectSvg="m-100 10v-20h10v20zm90 90v-10h20v10zm0-190v-10h20v10zm100 100v-20h10v20z" ;
const char * const xorSvg="m-100 10h10v-20h-10zm90 90h20v-10h-20zm0-190h20v-10h-20zm100 100h10v-20h-10z"
"m10 0v90h-90v10h-20v-10h-90v-90h-10v-20h10v-90h90v-10h20v10h90v90h10v20z" ;
const char * const subtractSvg="m-90 10v-20h-10v-90h90v10h20v-10h90v90h-10v20h10v90h-90v-10h-20v10h-90v-90z" ;
CPPUNIT_ASSERT_MESSAGE("cleared clip stays empty under union operation" ,
aUnion1.isCleared());
verifyPoly("union" , unionSvg, aUnion2);
verifyPoly("intersect" , intersectSvg, aIntersect);
verifyPoly("xor" , xorSvg, aXor);
verifyPoly("subtract" , subtractSvg, aSubtract);
}
void verifyMixedClips()
{
utils::B2DClipState aMixedClip;
static constexpr OUString unionSvg=u"m100 10v90h-90v10h-20v-10h-90v-90h-10v-20h10v-90h90v-10h20v10h90v90h10v20z" _ustr;
B2DPolyPolygon aTmp1;
CPPUNIT_ASSERT(utils::importFromSvgD(aTmp1, unionSvg, false , nullptr));
aMixedClip.intersectPolyPolygon(aTmp1);
aMixedClip.subtractRange(B2DRange(-20 ,-150 ,20 ,0 ));
aMixedClip.subtractRange(B2DRange(-150 ,-20 ,0 ,20 ));
aMixedClip.xorRange(B2DRange(-150 ,-150 ,150 ,150 ));
const char * const mixedClipSvg="m0 0v20h-100v80h90v10h20v-10h90v-90h10v-20h-10v-90h-80v100zm-20-20v-80h-80v80zm-130 170v-300h300v300z" ;
verifyPoly("mixed clip" , mixedClipSvg, aMixedClip);
}
CPPUNIT_TEST_SUITE(clipstate);
CPPUNIT_TEST(verifySimpleRange);
CPPUNIT_TEST(verifyMixedClips);
CPPUNIT_TEST_SUITE_END();
};
CPPUNIT_TEST_SUITE_REGISTRATION(basegfx2d::clipstate);
} // namespace basegfx2d
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(vorverarbeitet am 2026-09-28)
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