62 lines
2.2 KiB
C++
62 lines
2.2 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 "clockwipe.hxx"
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namespace slideshow::internal {
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::basegfx::B2DPolygon ClockWipe::calcCenteredClock( double t, double e )
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{
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::basegfx::B2DPolygon poly;
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::basegfx::B2DHomMatrix aTransform;
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aTransform.rotate( t * 2.0 * M_PI );
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const double MAX_EDGE = 2.0;
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::basegfx::B2DPoint p( 0.0, -MAX_EDGE );
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p *= aTransform;
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poly.append( p );
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if (t >= 0.875)
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poly.append( ::basegfx::B2DPoint( -e, -e ) );
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if (t >= 0.625)
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poly.append( ::basegfx::B2DPoint( -e, e ) );
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if (t >= 0.375)
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poly.append( ::basegfx::B2DPoint( e, e ) );
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if (t >= 0.125)
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poly.append( ::basegfx::B2DPoint( e, -e ) );
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poly.append( ::basegfx::B2DPoint( 0.0, -e ) );
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poly.append( ::basegfx::B2DPoint( 0.0, 0.0 ) );
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poly.setClosed(true);
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return poly;
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}
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::basegfx::B2DPolyPolygon ClockWipe::operator () ( double t )
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{
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const basegfx::B2DHomMatrix aTransform(basegfx::utils::createScaleTranslateB2DHomMatrix(0.5, 0.5, 0.5, 0.5));
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::basegfx::B2DPolygon poly( calcCenteredClock(t) );
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poly.transform( aTransform );
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return ::basegfx::B2DPolyPolygon(poly);
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}
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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