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