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Diffstat (limited to '')
| -rw-r--r-- | slideshow/source/engine/activities/continuouskeytimeactivitybase.cxx | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/slideshow/source/engine/activities/continuouskeytimeactivitybase.cxx b/slideshow/source/engine/activities/continuouskeytimeactivitybase.cxx new file mode 100644 index 000000000..db25d2dd4 --- /dev/null +++ b/slideshow/source/engine/activities/continuouskeytimeactivitybase.cxx @@ -0,0 +1,59 @@ +/* -*- 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 <tools/diagnose_ex.h> + +#include "continuouskeytimeactivitybase.hxx" + +#include <tuple> + +namespace slideshow::internal +{ + ContinuousKeyTimeActivityBase::ContinuousKeyTimeActivityBase( const ActivityParameters& rParms ) : + SimpleContinuousActivityBase( rParms ), + maLerper( std::vector(rParms.maDiscreteTimes) ) + { + ENSURE_OR_THROW( rParms.maDiscreteTimes.size() > 1, + "ContinuousKeyTimeActivityBase::ContinuousKeyTimeActivityBase(): key times vector must have two entries or more" ); + ENSURE_OR_THROW( rParms.maDiscreteTimes.front() == 0.0, + "ContinuousKeyTimeActivityBase::ContinuousKeyTimeActivityBase(): key times vector first entry must be zero" ); + ENSURE_OR_THROW( rParms.maDiscreteTimes.back() <= 1.0, + "ContinuousKeyTimeActivityBase::ContinuousKeyTimeActivityBase(): key times vector last entry must be less or equal 1" ); + } + + void ContinuousKeyTimeActivityBase::simplePerform( double nSimpleTime, + sal_uInt32 nRepeatCount ) const + { + // calc simple time from global time - sweep through the + // array multiple times for repeated animations (according to + // SMIL spec). + double fAlpha( calcAcceleratedTime( nSimpleTime ) ); + std::ptrdiff_t nIndex; + + std::tie(nIndex,fAlpha) = maLerper.lerp(fAlpha); + + perform( + nIndex, + fAlpha, + nRepeatCount ); + } +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |