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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 16:51:28 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 16:51:28 +0000 |
commit | 940b4d1848e8c70ab7642901a68594e8016caffc (patch) | |
tree | eb72f344ee6c3d9b80a7ecc079ea79e9fba8676d /slideshow/source/engine/transitions/randomwipe.cxx | |
parent | Initial commit. (diff) | |
download | libreoffice-940b4d1848e8c70ab7642901a68594e8016caffc.tar.xz libreoffice-940b4d1848e8c70ab7642901a68594e8016caffc.zip |
Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'slideshow/source/engine/transitions/randomwipe.cxx')
-rw-r--r-- | slideshow/source/engine/transitions/randomwipe.cxx | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/slideshow/source/engine/transitions/randomwipe.cxx b/slideshow/source/engine/transitions/randomwipe.cxx new file mode 100644 index 000000000..58047a676 --- /dev/null +++ b/slideshow/source/engine/transitions/randomwipe.cxx @@ -0,0 +1,82 @@ +/* -*- 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 <basegfx/matrix/b2dhommatrix.hxx> +#include <basegfx/numeric/ftools.hxx> +#include <basegfx/matrix/b2dhommatrixtools.hxx> +#include "randomwipe.hxx" +#include "transitiontools.hxx" +#include <tools.hxx> + + +namespace slideshow::internal { + +RandomWipe::RandomWipe( sal_Int32 nElements, bool randomBars ) + : m_positions( new ::basegfx::B2DPoint[ nElements ] ), + m_nElements( nElements ), + m_rect( createUnitRect() ) +{ + ::basegfx::B2DHomMatrix aTransform; + if (randomBars) + { + double edge = 1.0 / nElements; + for ( sal_Int32 pos = nElements; pos--; ) + m_positions[ pos ].setY( ::basegfx::pruneScaleValue( pos * edge ) ); + aTransform.scale( 1.0, ::basegfx::pruneScaleValue(edge) ); + } + else // dissolve effect + { + sal_Int32 sqrtElements = static_cast<sal_Int32>( + sqrt( static_cast<double>(nElements) ) ); + double edge = 1.0 / sqrtElements; + for ( sal_Int32 pos = nElements; pos--; ) { + m_positions[ pos ] = ::basegfx::B2DPoint( + ::basegfx::pruneScaleValue( (pos % sqrtElements) * edge ), + ::basegfx::pruneScaleValue( (pos / sqrtElements) * edge ) ); + } + const double pedge = ::basegfx::pruneScaleValue(edge); + aTransform.scale( pedge, pedge ); + } + m_rect.transform( aTransform ); + + // mix up: + for ( sal_Int32 pos1 = nElements ; pos1-- ; ) + { + const sal_Int32 pos2 = getRandomOrdinal(pos1+1); + ::std::swap(m_positions[ pos1], m_positions[ pos2 ]); + } +} + +::basegfx::B2DPolyPolygon RandomWipe::operator () ( double t ) +{ + ::basegfx::B2DPolyPolygon res; + for ( sal_Int32 pos = static_cast<sal_Int32>(t * m_nElements); pos--; ) + { + ::basegfx::B2DPoint const & point = m_positions[ pos ]; + ::basegfx::B2DPolygon poly( m_rect ); + poly.transform(basegfx::utils::createTranslateB2DHomMatrix(point.getX(), point.getY())); + res.append( poly ); + } + return res; +} + +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |