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| -rw-r--r-- | basegfx/test/genericclipper.cxx | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/basegfx/test/genericclipper.cxx b/basegfx/test/genericclipper.cxx new file mode 100644 index 000000000..af88a66ba --- /dev/null +++ b/basegfx/test/genericclipper.cxx @@ -0,0 +1,188 @@ +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +#include <cppunit/TestAssert.h> +#include <cppunit/TestFixture.h> +#include <cppunit/extensions/HelperMacros.h> + +#include <basegfx/polygon/b2dpolygon.hxx> +#include <basegfx/polygon/b2dpolygontools.hxx> +#include <basegfx/polygon/b2dpolypolygontools.hxx> +#include <basegfx/polygon/b2dpolypolygoncutter.hxx> +#include <basegfx/polygon/b2dpolypolygon.hxx> + +using namespace ::basegfx; + +namespace basegfx2d +{ + +class genericclipper : public CppUnit::TestFixture +{ +private: + B2DPolygon aSelfIntersecting; + B2DPolygon aShiftedRectangle; + +public: + // initialise your test code values here. + void setUp() override + { + aSelfIntersecting.append(B2DPoint(0, 0)); + aSelfIntersecting.append(B2DPoint(0, 100)); + aSelfIntersecting.append(B2DPoint(75, 100)); + aSelfIntersecting.append(B2DPoint(75, 50)); + aSelfIntersecting.append(B2DPoint(25, 50)); + aSelfIntersecting.append(B2DPoint(25, 150)); + aSelfIntersecting.append(B2DPoint(100,150)); + aSelfIntersecting.append(B2DPoint(100,0)); + aSelfIntersecting.setClosed(true); + + aShiftedRectangle = utils::createPolygonFromRect( + B2DRange(0,90,20,150)); + } + + + void validate(const char* pName, + const char* pValidSvgD, + B2DPolyPolygon (*pFunc)(const B2DPolyPolygon&, const B2DPolyPolygon&)) const + { + const B2DPolyPolygon aSelfIntersect( + utils::prepareForPolygonOperation(aSelfIntersecting)); + const B2DPolyPolygon aRect( + utils::prepareForPolygonOperation(aShiftedRectangle)); +#if OSL_DEBUG_LEVEL > 2 + fprintf(stderr, "%s input LHS - svg:d=\"%s\"\n", + pName, OUStringToOString( + basegfx::utils::exportToSvgD( + aSelfIntersect, true, true, false), + RTL_TEXTENCODING_UTF8).getStr() ); + fprintf(stderr, "%s input RHS - svg:d=\"%s\"\n", + pName, OUStringToOString( + basegfx::utils::exportToSvgD( + aRect, true, true, false), + RTL_TEXTENCODING_UTF8).getStr() ); +#endif + + const B2DPolyPolygon aRes= + pFunc(aSelfIntersect, aRect); + +#if OSL_DEBUG_LEVEL > 2 + fprintf(stderr, "%s - svg:d=\"%s\"\n", + pName, OUStringToOString( + basegfx::utils::exportToSvgD(aRes, true, true, false), + RTL_TEXTENCODING_UTF8).getStr() ); +#endif + + OUString aValid=OUString::createFromAscii(pValidSvgD); + + CPPUNIT_ASSERT_EQUAL_MESSAGE(pName, + aValid, basegfx::utils::exportToSvgD(aRes, true, true, false)); + } + + void validateOr() + { + const char* const pValid="m0 0h100v150h-75v-50h-5v50h-20v-50-10zm75 100v-50h-50v50z"; + validate("validateOr", pValid, &utils::solvePolygonOperationOr); + } + + void validateXor() + { + const char* const pValid="m0 0h100v150h-75v-50h-5v50h-20v-50-10zm0 100h20v-10h-20zm75 0v-50h-50v50z"; + validate("validateXor", pValid, &utils::solvePolygonOperationXor); + } + + void validateAnd() + { + const char* const pValid="m0 100v-10h20v10z"; + validate("validateAnd", pValid, &utils::solvePolygonOperationAnd); + } + + void validateDiff() + { + const char* const pValid="m0 90v-90h100v150h-75v-50h-5v-10zm75 10v-50h-50v50z"; + validate("validateDiff", pValid, &utils::solvePolygonOperationDiff); + } + + void validateCrossover(const char* pName, + const char* pInputSvgD, + const char* pValidSvgD) const + { + OUString aInput=OUString::createFromAscii(pInputSvgD); + OUString aValid=OUString::createFromAscii(pValidSvgD); + B2DPolyPolygon aInputPoly, aValidPoly; + + CPPUNIT_ASSERT(utils::importFromSvgD(aInputPoly, aInput, false, nullptr)); + CPPUNIT_ASSERT(utils::importFromSvgD(aValidPoly, aValid, false, nullptr)); + + CPPUNIT_ASSERT_EQUAL_MESSAGE( + pName, + aValid, + basegfx::utils::exportToSvgD( + utils::solveCrossovers(aInputPoly), true, true, false)); + } + + void checkCrossoverSolver() + { + // partially intersecting polygons, with a common subsection + validateCrossover( + "partially intersecting", + "m0 0 v 5 h 3 h 1 h 1 h 1 v -2 v -3 z" + "m3 7 v -2 h 1 h 1 h 1 v -2 h 1 v 3 z", + "m0 0v5h3 1 1 1v-2-3zm3 7v-2h1 1 1v-2h1v3z"); + + // first polygon is identical to subset of second polygon + validateCrossover( + "full subset", + "m0 0 v 5 h 3 h 1 h 1 v -5 z" + "m3 10 v -5 h 1 h 1 v -5 h -5 v 5 h 3 z", + "m0 0v5h3 1 1v-5zm3 10v-5zm1-5h1v-5h-5v5h3z"); + + // first polygon is identical to subset of second polygon, but + // oriented in the opposite direction + validateCrossover( + "full subset, opposite direction", + "m0 0 v 5 h 3 h 1 h 1 v -5 z" + "m3 10 v -5 h -1 h -1 h -1 v -5 h 5 v 5 h 2 z", + "m0 0v5h1 1 1-1-1-1v-5h5v5-5zm4 5h1 2l-4 5v-5z"); + + // first polygon is identical to subset of second polygon, and + // has a curve segment (triggers different code path) + validateCrossover( + "full subset, plus curves", + "m0 0 v 5 h 3 h 1 h 1 c 2 0 2 0 0 -5 z" + "m3 10 v -5 h 1 h 1 c 2 0 2 0 0 -5 h -5 v 5 h 3 z", + "m0 0v5h3 1 1c2 0 2 0 0-5zm3 10v-5zm1-5h1c2 0 2 0 0-5h-5v5h3z"); + } + + // Change the following lines only, if you add, remove or rename + // member functions of the current class, + // because these macros are need by auto register mechanism. + + CPPUNIT_TEST_SUITE(genericclipper); + CPPUNIT_TEST(validateOr); + CPPUNIT_TEST(validateXor); + CPPUNIT_TEST(validateAnd); + CPPUNIT_TEST(validateDiff); + CPPUNIT_TEST(checkCrossoverSolver); + CPPUNIT_TEST_SUITE_END(); +}; + +CPPUNIT_TEST_SUITE_REGISTRATION(basegfx2d::genericclipper); +} // namespace basegfx2d + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |