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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/point/b2dpoint.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include "transitiontools.hxx"
#include "zigzagwipe.hxx"
namespace slideshow::internal {
ZigZagWipe::ZigZagWipe( sal_Int32 nZigs ) : m_zigEdge( 1.0 / nZigs )
{
const double d = m_zigEdge;
const double d2 = d / 2.0;
m_stdZigZag.append( ::basegfx::B2DPoint( -1.0 - d, -d ) );
m_stdZigZag.append( ::basegfx::B2DPoint( -1.0 - d, 1.0 + d ) );
m_stdZigZag.append( ::basegfx::B2DPoint( -d, 1.0 + d ) );
for ( sal_Int32 pos = nZigs + 2; pos--; ) {
m_stdZigZag.append( ::basegfx::B2DPoint( 0.0, ((pos - 1) * d) + d2 ) );
m_stdZigZag.append( ::basegfx::B2DPoint( -d, (pos - 1) * d ) );
}
m_stdZigZag.setClosed(true);
}
::basegfx::B2DPolyPolygon ZigZagWipe::operator () ( double t )
{
::basegfx::B2DPolyPolygon res(m_stdZigZag);
res.transform(basegfx::utils::createTranslateB2DHomMatrix((1.0 + m_zigEdge) * t, 0.0));
return res;
}
::basegfx::B2DPolyPolygon BarnZigZagWipe::operator () ( double t )
{
::basegfx::B2DPolyPolygon res( createUnitRect() );
::basegfx::B2DPolygon poly( m_stdZigZag );
poly.flip();
basegfx::B2DHomMatrix aTransform(basegfx::utils::createTranslateB2DHomMatrix(
(1.0 + m_zigEdge) * (1.0 - t) / 2.0, 0.0));
poly.transform( aTransform );
res.append( poly );
aTransform.scale( -1.0, 1.0 );
aTransform.translate( 1.0, m_zigEdge / 2.0 );
poly = m_stdZigZag;
poly.transform( aTransform );
res.append( poly );
return res;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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