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

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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_slideshow.hxx"

#include <canvas/debug.hxx>
#include <basegfx/numeric/ftools.hxx>
#include <basegfx/matrix/b2dhommatrix.hxx>
#include <basegfx/point/b2dpoint.hxx>
#include <basegfx/matrix/b2dhommatrixtools.hxx>
#include "transitiontools.hxx"
#include "figurewipe.hxx"


namespace slideshow {
namespace internal {

::basegfx::B2DPolyPolygon FigureWipe::operator () ( double t )
{
    ::basegfx::B2DPolyPolygon res(m_figure);
    res.transform(basegfx::tools::createScaleTranslateB2DHomMatrix(t, t, 0.5, 0.5));
    return res;
}

FigureWipe * FigureWipe::createTriangleWipe()
{
    const double s60 = sin( basegfx::deg2rad(60.0) );
    const double s30 = sin( basegfx::deg2rad(30.0) );
    ::basegfx::B2DPolygon figure;
    figure.append( ::basegfx::B2DPoint( 0.5 + s30, 0.5 ) );
    figure.append( ::basegfx::B2DPoint( 0.0, -0.5 - s60 ) );
    figure.append( ::basegfx::B2DPoint( -0.5 - s30, 0.5 ) );
    figure.setClosed(true);
    return new FigureWipe(figure);
}

FigureWipe * FigureWipe::createArrowHeadWipe()
{
    const double s60 = sin( basegfx::deg2rad(60.0) );
    const double s30 = sin( basegfx::deg2rad(30.0) );
    const double off = s30;
    ::basegfx::B2DPolygon figure;
    figure.append( ::basegfx::B2DPoint( 0.5 + s30 + off, 0.5 + off ) );
    figure.append( ::basegfx::B2DPoint( 0.0, -0.5 - s60 ) );
    figure.append( ::basegfx::B2DPoint( -0.5 - s30 - off, 0.5 + off ) );
    figure.append( ::basegfx::B2DPoint( 0.0, 0.5 ) );
    figure.setClosed(true);
    return new FigureWipe(figure);
}

FigureWipe * FigureWipe::createPentagonWipe()
{
    const double s = sin( basegfx::deg2rad(18.0) );
    const double c = cos( basegfx::deg2rad(18.0) );
    ::basegfx::B2DPolygon figure;
    figure.append( ::basegfx::B2DPoint( 0.5, 0.5 ) );
    figure.append( ::basegfx::B2DPoint( 0.5 + s, 0.5 - c ) );
    figure.append( ::basegfx::B2DPoint( 0.0, 0.5 - c - sin(basegfx::deg2rad(36.0)) ) );
    figure.append( ::basegfx::B2DPoint( -0.5 - s, 0.5 - c ) );
    figure.append( ::basegfx::B2DPoint( -0.5, 0.5 ) );
    figure.setClosed(true);
    return new FigureWipe(figure);
}

FigureWipe * FigureWipe::createHexagonWipe()
{
    const double s = sin( basegfx::deg2rad(30.0) );
    const double c = cos( basegfx::deg2rad(30.0) );
    ::basegfx::B2DPolygon figure;
    figure.append( ::basegfx::B2DPoint( 0.5, c ) );
    figure.append( ::basegfx::B2DPoint( 0.5 + s, 0.0 ) );
    figure.append( ::basegfx::B2DPoint( 0.5, -c ) );
    figure.append( ::basegfx::B2DPoint( -0.5, -c ) );
    figure.append( ::basegfx::B2DPoint( -0.5 - s, 0.0 ) );
    figure.append( ::basegfx::B2DPoint( -0.5, c ) );
    figure.setClosed(true);
    return new FigureWipe(figure);
}

FigureWipe * FigureWipe::createStarWipe( sal_Int32 nPoints )
{
    const double v = (M_PI / nPoints);
    const ::basegfx::B2DPoint p_( 0.0, -M_SQRT2 );
    ::basegfx::B2DPolygon figure;
    for ( sal_Int32 pos = 0; pos < nPoints; ++pos ) {
        const double w = (pos * 2.0 * M_PI / nPoints);
        ::basegfx::B2DHomMatrix aTransform;
        ::basegfx::B2DPoint p(p_);
        aTransform.rotate( -w );
        p *= aTransform;
        figure.append(p);
        p = p_;
        aTransform.identity();
        aTransform.scale( 0.5, 0.5 );
        aTransform.rotate( -w - v );
        p *= aTransform;
        figure.append(p);
    }
    figure.setClosed(true);
    return new FigureWipe(figure);
}

}
}