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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 <canvas/debug.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include "checkerboardwipe.hxx"
namespace slideshow {
namespace internal {
::basegfx::B2DPolyPolygon CheckerBoardWipe::operator () ( double t )
{
const double d = (1.0 / m_unitsPerEdge);
::basegfx::B2DHomMatrix aTransform;
aTransform.scale( ::basegfx::pruneScaleValue( d * 2.0 * t ),
::basegfx::pruneScaleValue( d ) );
::basegfx::B2DPolyPolygon res;
for ( sal_Int32 i = m_unitsPerEdge; i--; )
{
::basegfx::B2DHomMatrix transform( aTransform );
if ((i % 2) == 1) // odd line
transform.translate( -d, 0.0 );
for ( sal_Int32 j = (m_unitsPerEdge / 2) + 1; j--; )
{
::basegfx::B2DPolyPolygon poly( m_unitRect );
poly.transform( transform );
res.append( poly );
transform.translate( d * 2.0, 0.0 );
}
aTransform.translate( 0.0, d ); // next line
}
return res;
}
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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