basegfx/test/basegfxtools.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/keystoplerp.hxx>
  26 #include <basegfx/numeric/ftools.hxx>
  27
  28 using namespace ::basegfx;
  29
  30 namespace basegfxtools
  31 {
  32
  33 class KeyStopLerpTest : public CppUnit::TestFixture
  34 {
  35     tools::KeyStopLerp maKeyStops;
  36
  37     static std::vector<double> getTestVector()
  38     {
  39         std::vector<double> aStops(3);
  40         aStops[0] = 0.1;
  41         aStops[1] = 0.5;
  42         aStops[2] = 0.9;
  43         return aStops;
  44     }
  45
  46 public:
  47     KeyStopLerpTest() :
  48         maKeyStops(getTestVector())
  49     {}
  50
  51
  52     void test()
  53     {
  54         double fAlpha;
  55         std::ptrdiff_t nIndex;
  56
  57         std::tie(nIndex,fAlpha) = maKeyStops.lerp(-1.0);
  58         CPPUNIT_ASSERT_MESSAGE("-1.0", nIndex==0 && fAlpha==0.0);
  59
  60         std::tie(nIndex,fAlpha) = maKeyStops.lerp(0.1);
  61         CPPUNIT_ASSERT_MESSAGE("0.1", nIndex==0 && fAlpha==0.0);
  62
  63         std::tie(nIndex,fAlpha) = maKeyStops.lerp(0.3);
  64         CPPUNIT_ASSERT_MESSAGE("0.3", nIndex==0 && fTools::equal(fAlpha,0.5));
  65
  66         std::tie(nIndex,fAlpha) = maKeyStops.lerp(0.5);
  67         CPPUNIT_ASSERT_MESSAGE("0.5", nIndex==0 && fTools::equal(fAlpha,1.0));
  68
  69         std::tie(nIndex,fAlpha) = maKeyStops.lerp(0.51);
  70         CPPUNIT_ASSERT_MESSAGE("0.51", nIndex==1 && fTools::equal(fAlpha,0.025));
  71
  72         std::tie(nIndex,fAlpha) = maKeyStops.lerp(0.9);
  73         CPPUNIT_ASSERT_MESSAGE("0.51", nIndex==1 && fTools::equal(fAlpha,1.0));
  74
  75         std::tie(nIndex,fAlpha) = maKeyStops.lerp(1.0);
  76         CPPUNIT_ASSERT_MESSAGE("0.51", nIndex==1 && fAlpha==1.0);
  77     }
  78
  79     // Change the following lines only, if you add, remove or rename
  80     // member functions of the current class,
  81     // because these macros are need by auto register mechanism.
  82
  83     CPPUNIT_TEST_SUITE(KeyStopLerpTest);
  84     CPPUNIT_TEST(test);
  85     CPPUNIT_TEST_SUITE_END();
  86 };
  87
  88 CPPUNIT_TEST_SUITE_REGISTRATION(basegfxtools::KeyStopLerpTest);
  89 } // namespace basegfxtools
  90
  91 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */