70 lines
2.5 KiB
C++
70 lines
2.5 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 <basegfx/matrix/b2dhommatrix.hxx>
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#include <basegfx/point/b2dpoint.hxx>
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#include <basegfx/matrix/b2dhommatrixtools.hxx>
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#include "transitiontools.hxx"
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#include "zigzagwipe.hxx"
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namespace slideshow::internal {
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ZigZagWipe::ZigZagWipe( sal_Int32 nZigs ) : m_zigEdge( 1.0 / nZigs )
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{
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const double d = m_zigEdge;
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const double d2 = d / 2.0;
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m_stdZigZag.append( ::basegfx::B2DPoint( -1.0 - d, -d ) );
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m_stdZigZag.append( ::basegfx::B2DPoint( -1.0 - d, 1.0 + d ) );
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m_stdZigZag.append( ::basegfx::B2DPoint( -d, 1.0 + d ) );
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for ( sal_Int32 pos = nZigs + 2; pos--; ) {
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m_stdZigZag.append( ::basegfx::B2DPoint( 0.0, ((pos - 1) * d) + d2 ) );
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m_stdZigZag.append( ::basegfx::B2DPoint( -d, (pos - 1) * d ) );
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}
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m_stdZigZag.setClosed(true);
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}
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::basegfx::B2DPolyPolygon ZigZagWipe::operator () ( double t )
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{
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::basegfx::B2DPolyPolygon res(m_stdZigZag);
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res.transform(basegfx::utils::createTranslateB2DHomMatrix((1.0 + m_zigEdge) * t, 0.0));
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return res;
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}
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::basegfx::B2DPolyPolygon BarnZigZagWipe::operator () ( double t )
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{
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::basegfx::B2DPolyPolygon res( createUnitRect() );
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::basegfx::B2DPolygon poly( m_stdZigZag );
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poly.flip();
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basegfx::B2DHomMatrix aTransform(basegfx::utils::createTranslateB2DHomMatrix(
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(1.0 + m_zigEdge) * (1.0 - t) / 2.0, 0.0));
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poly.transform( aTransform );
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res.append( poly );
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aTransform.scale( -1.0, 1.0 );
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aTransform.translate( 1.0, m_zigEdge / 2.0 );
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poly = m_stdZigZag;
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poly.transform( aTransform );
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res.append( poly );
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return res;
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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