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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#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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