summaryrefslogtreecommitdiffstats
path: root/slideshow/source/engine/activities/continuouskeytimeactivitybase.cxx
blob: db25d2dd4333a35475c099fc5e4f025353fc8233 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
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: */