74 lines
2.5 KiB
C++
74 lines
2.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#include <basegfx/matrix/b2dhommatrix.hxx>
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#include <basegfx/polygon/b2dpolypolygon.hxx>
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#include <basegfx/numeric/ftools.hxx>
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#include <basegfx/matrix/b2dhommatrixtools.hxx>
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#include "fourboxwipe.hxx"
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namespace slideshow::internal {
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::basegfx::B2DPolyPolygon FourBoxWipe::operator () ( double t )
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{
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::basegfx::B2DHomMatrix aTransform;
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const double d = ::basegfx::pruneScaleValue( t / 2.0 );
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if (m_cornersOut)
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{
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aTransform = basegfx::utils::createTranslateB2DHomMatrix(-0.5, -0.5);
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aTransform = basegfx::utils::createScaleTranslateB2DHomMatrix(d, d, -0.25, -0.25)
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* aTransform;
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}
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else
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{
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aTransform = basegfx::utils::createScaleTranslateB2DHomMatrix(d, d, -0.5, -0.5);
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}
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// top left:
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::basegfx::B2DPolygon square( m_unitRect );
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square.transform( aTransform );
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::basegfx::B2DPolyPolygon res( square );
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// bottom left, flip on x-axis:
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aTransform.scale( -1.0, 1.0 );
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::basegfx::B2DPolygon square2( m_unitRect );
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square2.transform( aTransform );
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square2.flip(); // flip direction
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res.append( square2 );
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// bottom right, flip on y-axis:
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aTransform.scale( 1.0, -1.0 );
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::basegfx::B2DPolygon square3( m_unitRect );
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square3.transform( aTransform );
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res.append( square3 );
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// top right, flip on x-axis:
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aTransform.scale( -1.0, 1.0 );
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::basegfx::B2DPolygon square4( m_unitRect );
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square4.transform( aTransform );
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square4.flip(); // flip direction
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res.append( square4 );
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aTransform = basegfx::utils::createTranslateB2DHomMatrix(0.5, 0.5);
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res.transform( aTransform );
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return res;
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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