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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/utils/keystoplerp.hxx>
#include <basegfx/numeric/ftools.hxx>
using namespace ::basegfx;
namespace basegfxtools
{
class KeyStopLerpTest : public CppUnit::TestFixture
{
utils::KeyStopLerp maKeyStops;
static std::vector<double> getTestVector() { return { 0.1, 0.5, 0.9 }; }
public:
KeyStopLerpTest()
: maKeyStops(getTestVector())
{
}
void test()
{
double fAlpha;
std::ptrdiff_t nIndex;
std::tie(nIndex, fAlpha) = maKeyStops.lerp(-1.0);
CPPUNIT_ASSERT_EQUAL_MESSAGE("-1.0", std::ptrdiff_t(0), nIndex);
CPPUNIT_ASSERT_EQUAL_MESSAGE("-1.0", 0.0, fAlpha);
std::tie(nIndex, fAlpha) = maKeyStops.lerp(0.1);
CPPUNIT_ASSERT_EQUAL_MESSAGE("0.1", std::ptrdiff_t(0), nIndex);
CPPUNIT_ASSERT_EQUAL_MESSAGE("0.1", 0.0, fAlpha);
std::tie(nIndex, fAlpha) = maKeyStops.lerp(0.3);
CPPUNIT_ASSERT_EQUAL_MESSAGE("0.3", std::ptrdiff_t(0), nIndex);
CPPUNIT_ASSERT_MESSAGE("0.3", fTools::equal(fAlpha, 0.5));
std::tie(nIndex, fAlpha) = maKeyStops.lerp(0.5);
CPPUNIT_ASSERT_EQUAL_MESSAGE("0.5", std::ptrdiff_t(0), nIndex);
CPPUNIT_ASSERT_MESSAGE("0.5", fTools::equal(fAlpha, 1.0));
std::tie(nIndex, fAlpha) = maKeyStops.lerp(0.51);
CPPUNIT_ASSERT_EQUAL_MESSAGE("0.51", std::ptrdiff_t(1), nIndex);
CPPUNIT_ASSERT_MESSAGE("0.51", fTools::equal(fAlpha, 0.025));
std::tie(nIndex, fAlpha) = maKeyStops.lerp(0.9);
CPPUNIT_ASSERT_EQUAL_MESSAGE("0.51", std::ptrdiff_t(1), nIndex);
CPPUNIT_ASSERT_MESSAGE("0.51", fTools::equal(fAlpha, 1.0));
std::tie(nIndex, fAlpha) = maKeyStops.lerp(1.0);
CPPUNIT_ASSERT_EQUAL_MESSAGE("0.51", std::ptrdiff_t(1), nIndex);
CPPUNIT_ASSERT_DOUBLES_EQUAL_MESSAGE("0.51", 1.0, fAlpha, 1E-12);
}
// 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(KeyStopLerpTest);
CPPUNIT_TEST(test);
CPPUNIT_TEST_SUITE_END();
};
CPPUNIT_TEST_SUITE_REGISTRATION(basegfxtools::KeyStopLerpTest);
} // namespace basegfxtools
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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