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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/doublediamondwipe.cxx | |
parent | Initial commit. (diff) | |
download | libreoffice-upstream.tar.xz libreoffice-upstream.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/doublediamondwipe.cxx')
-rw-r--r-- | slideshow/source/engine/transitions/doublediamondwipe.cxx | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/slideshow/source/engine/transitions/doublediamondwipe.cxx b/slideshow/source/engine/transitions/doublediamondwipe.cxx new file mode 100644 index 000000000..9c482000d --- /dev/null +++ b/slideshow/source/engine/transitions/doublediamondwipe.cxx @@ -0,0 +1,54 @@ +/* -*- 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/point/b2dpoint.hxx> +#include "doublediamondwipe.hxx" + + +namespace slideshow::internal { + +::basegfx::B2DPolyPolygon DoubleDiamondWipe::operator () ( double t ) +{ + // outer: + const double a = ::basegfx::pruneScaleValue( 0.25 + (t * 0.75) ); + ::basegfx::B2DPolygon poly; + poly.append( ::basegfx::B2DPoint( 0.5 + a, 0.5 ) ); + poly.append( ::basegfx::B2DPoint( 0.5, 0.5 - a ) ); + poly.append( ::basegfx::B2DPoint( 0.5 - a, 0.5 ) ); + poly.append( ::basegfx::B2DPoint( 0.5, 0.5 + a ) ); + poly.setClosed(true); + ::basegfx::B2DPolyPolygon res(poly); + + // inner (reverse order to clip): + const double b = ::basegfx::pruneScaleValue( (1.0 - t) * 0.25 ); + poly.clear(); + poly.append( ::basegfx::B2DPoint( 0.5 + b, 0.5 ) ); + poly.append( ::basegfx::B2DPoint( 0.5, 0.5 + b ) ); + poly.append( ::basegfx::B2DPoint( 0.5 - b, 0.5 ) ); + poly.append( ::basegfx::B2DPoint( 0.5, 0.5 - b ) ); + poly.setClosed(true); + res.append(poly); + + return res; +} + +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |