/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project .
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* 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, 1 E-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
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