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/* -*- 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/polygon/b2dpolypolygon.hxx>
#include <basegfx/numeric/ftools.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include "fourboxwipe.hxx"
namespace slideshow::internal {
::basegfx::B2DPolyPolygon FourBoxWipe::operator () ( double t )
{
::basegfx::B2DHomMatrix aTransform;
const double d = ::basegfx::pruneScaleValue( t / 2.0 );
if (m_cornersOut)
{
aTransform = basegfx::utils::createTranslateB2DHomMatrix(-0.5, -0.5);
aTransform = basegfx::utils::createScaleTranslateB2DHomMatrix(d, d, -0.25, -0.25)
* aTransform;
}
else
{
aTransform = basegfx::utils::createScaleTranslateB2DHomMatrix(d, d, -0.5, -0.5);
}
// top left:
::basegfx::B2DPolygon square( m_unitRect );
square.transform( aTransform );
::basegfx::B2DPolyPolygon res( square );
// bottom left, flip on x-axis:
aTransform.scale( -1.0, 1.0 );
::basegfx::B2DPolygon square2( m_unitRect );
square2.transform( aTransform );
square2.flip(); // flip direction
res.append( square2 );
// bottom right, flip on y-axis:
aTransform.scale( 1.0, -1.0 );
::basegfx::B2DPolygon square3( m_unitRect );
square3.transform( aTransform );
res.append( square3 );
// top right, flip on x-axis:
aTransform.scale( -1.0, 1.0 );
::basegfx::B2DPolygon square4( m_unitRect );
square4.transform( aTransform );
square4.flip(); // flip direction
res.append( square4 );
aTransform = basegfx::utils::createTranslateB2DHomMatrix(0.5, 0.5);
res.transform( aTransform );
return res;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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