ellipsewipe.cxx

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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 *
 *   Licensed to the Apache Software Foundation (ASF) under one or more
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#include <com/sun/star/animations/TransitionSubType.hpp>
#include <basegfx/numeric/ftools.hxx>
#include <basegfx/polygon/b2dpolygontools.hxx>
#include "ellipsewipe.hxx"
 
 
namespace slideshow::internal {
 
::basegfx::B2DPolyPolygon EllipseWipe::operator () ( double t )
{
    ::basegfx::B2DPoint rCenter(0.5,0.5);
    double fRadius = ::basegfx::pruneScaleValue( t * M_SQRT2 / 2.0 );
 
    if( mnSubType == com::sun::star::animations::TransitionSubType::VERTICAL )
    {
        // oval:
        ::basegfx::B2DPolygon poly (
            ::basegfx::utils::createPolygonFromEllipse( rCenter, fRadius*2, fRadius ) ); //Horizontal Ellipse is rotated by 90 degrees
        return ::basegfx::B2DPolyPolygon( poly );
    }
    else
    {
         // circle:
        ::basegfx::B2DPolygon poly(
            ::basegfx::utils::createPolygonFromCircle( rCenter, fRadius ) );
        return ::basegfx::B2DPolyPolygon( poly );
    }
}
 
}
 
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