Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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: */