basegfx/test/clipstate.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  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
  36 namespace basegfx2d
  37 {
  38
  39 class clipstate : public CppUnit::TestFixture
  40 {
  41 private:
  42     tools::B2DClipState aUnion1;
  43     tools::B2DClipState aUnion2;
  44     tools::B2DClipState aIntersect;
  45     tools::B2DClipState aXor;
  46     tools::B2DClipState aSubtract;
  47
  48 public:
  49     void setUp()
  50     {
  51         B2DRange aCenter(100, 100, -100, -100);
  52         B2DRange aNorth(-10, -110, 10, -90);
  53         B2DRange aWest(-110, -10, -90, 10);
  54         B2DRange aSouth(-10, 110, 10, 90);
  55         B2DRange aEast(110, -10, 90, 10);
  56
  57         aUnion1.unionRange(aCenter);
  58         aUnion1.unionRange(aNorth);
  59         aUnion1.unionRange(aWest);
  60         aUnion1.unionRange(aSouth);
  61         aUnion1.unionRange(aEast);
  62
  63         aUnion2.makeNull();
  64         aUnion2.unionRange(aCenter);
  65         aUnion2.unionRange(aNorth);
  66         aUnion2.unionRange(aWest);
  67         aUnion2.unionRange(aSouth);
  68         aUnion2.unionRange(aEast);
  69
  70         aIntersect.intersectRange(aCenter);
  71         aIntersect.intersectRange(aNorth);
  72         aIntersect.intersectRange(aWest);
  73         aIntersect.intersectRange(aSouth);
  74         aIntersect.intersectRange(aEast);
  75
  76         aXor.makeNull();
  77         aXor.xorRange(aCenter);
  78         aXor.xorRange(aNorth);
  79         aXor.xorRange(aWest);
  80         aXor.xorRange(aSouth);
  81         aXor.xorRange(aEast);
  82
  83         aSubtract.intersectRange(aCenter);
  84         aSubtract.subtractRange(aNorth);
  85         aSubtract.subtractRange(aWest);
  86         aSubtract.subtractRange(aSouth);
  87         aSubtract.subtractRange(aEast);
  88     }
  89
  90     void tearDown()
  91     {}
  92
  93     void verifyPoly(const char* sName, const char* sSvg, const tools::B2DClipState& toTest)
  94     {
  95 #if OSL_DEBUG_LEVEL > 2
  96         fprintf(stderr, "%s - svg:d=\"%s\"\n",
  97                 sName, OUStringToOString(
  98                     basegfx::tools::exportToSvgD(toTest.getClipPoly()),
  99                     RTL_TEXTENCODING_UTF8).getStr() );
 100 #endif
 101
 102         B2DPolyPolygon aTmp1;
 103         CPPUNIT_ASSERT_MESSAGE(sName,
 104                                tools::importFromSvgD(
 105                                    aTmp1,
 106                                    OUString::createFromAscii(sSvg)));
 107
 108         const OUString aSvg=
 109             tools::exportToSvgD(toTest.getClipPoly());
 110         B2DPolyPolygon aTmp2;
 111         CPPUNIT_ASSERT_MESSAGE(sName,
 112                                tools::importFromSvgD(
 113                                    aTmp2,
 114                                    aSvg));
 115
 116         CPPUNIT_ASSERT_MESSAGE(
 117             sName,
 118             aTmp2 == aTmp1);
 119     }
 120
 121     void verifySimpleRange()
 122     {
 123         const char* unionSvg="m100 10v90h-90v10h-20v-10h-90v-90h-10v-20h10v-90h90v-10h20v10h90v90h10v20z";
 124         const char* intersectSvg="m-100 10v-20h10v20zm90 90v-10h20v10zm0-190v-10h20v10zm100 100v-20h10v20z";
 125         const char* xorSvg="m-100 10h10v-20h-10zm90 90h20v-10h-20zm0-190h20v-10h-20zm100 100h10v-20h-10z"
 126                            "m10 0v90h-90v10h-20v-10h-90v-90h-10v-20h10v-90h90v-10h20v10h90v90h10v20z";
 127         const char* subtractSvg="m-90 10v-20h-10v-90h90v10h20v-10h90v90h-10v20h10v90h-90v-10h-20v10h-90v-90z";
 128
 129         CPPUNIT_ASSERT_MESSAGE("cleared clip stays empty under union operation",
 130                                aUnion1.isCleared());
 131         verifyPoly("union", unionSvg, aUnion2);
 132         verifyPoly("intersect", intersectSvg, aIntersect);
 133         verifyPoly("xor", xorSvg, aXor);
 134         verifyPoly("subtract", subtractSvg, aSubtract);
 135     }
 136
 137     void verifyMixedClips()
 138     {
 139         tools::B2DClipState aMixedClip;
 140
 141         const char* unionSvg="m100 10v90h-90v10h-20v-10h-90v-90h-10v-20h10v-90h90v-10h20v10h90v90h10v20z";
 142
 143         B2DPolyPolygon aTmp1;
 144         tools::importFromSvgD(
 145             aTmp1,
 146             OUString::createFromAscii(unionSvg));
 147
 148         aMixedClip.intersectPolyPolygon(aTmp1);
 149         aMixedClip.subtractRange(B2DRange(-20,-150,20,0));
 150         aMixedClip.subtractRange(B2DRange(-150,-20,0,20));
 151         aMixedClip.xorRange(B2DRange(-150,-150,150,150));
 152
 153         const char* mixedClipSvg="m0 0v20h-100v80h90v10h20v-10h90v-90h10v-20h-10v-90h-80v100zm-20-20v-80h-80v80zm-130 170v-300h300v300z";
 154         verifyPoly("mixed clip", mixedClipSvg, aMixedClip);
 155     }
 156
 157     CPPUNIT_TEST_SUITE(clipstate);
 158     CPPUNIT_TEST(verifySimpleRange);
 159     CPPUNIT_TEST(verifyMixedClips);
 160     CPPUNIT_TEST_SUITE_END();
 161 };
 162
 163 // -----------------------------------------------------------------------------
 164 CPPUNIT_TEST_SUITE_REGISTRATION(basegfx2d::clipstate);
 165 } // namespace basegfx2d
 166
 167 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */