AOO410/main/slideshow/source/engine/transitions/sweepwipe.cxx

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 * Licensed to the Apache Software Foundation (ASF) under one
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 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_slideshow.hxx"

#include <canvas/debug.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/numeric/ftools.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include "clockwipe.hxx"
#include "sweepwipe.hxx"
#include "transitiontools.hxx"


namespace slideshow {
namespace internal {

::basegfx::B2DPolyPolygon SweepWipe::operator () ( double t )
{
    t /= 2.0;
    if (! m_center)
        t /= 2.0;
    if (!m_single && !m_oppositeVertical)
        t /= 2.0;
    
    ::basegfx::B2DPolygon poly( ClockWipe::calcCenteredClock( 0.25 + t ) );
    ::basegfx::B2DHomMatrix aTransform;
    
    if (m_center) 
    {
        aTransform = basegfx::tools::createTranslateB2DHomMatrix(0.5, 0.0);
        poly.transform( aTransform );
    }
    ::basegfx::B2DPolyPolygon res(poly);
    
    if (! m_single) 
    {
        if (m_oppositeVertical) 
        {
            aTransform = basegfx::tools::createScaleB2DHomMatrix(1.0, -1.0);
            aTransform.translate( 0.0, 1.0 );
            poly.transform( aTransform );
            poly.flip();
        }
        else 
        {
            aTransform = basegfx::tools::createTranslateB2DHomMatrix(-0.5, -0.5);
            aTransform.rotate( M_PI );
            aTransform.translate( 0.5, 0.5 );
            poly.transform( aTransform );
        }
        res.append(poly);
    }
    
    return m_flipOnYAxis ? flipOnYAxis(res) : res;
}

}
}