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/* -*- 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: */
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