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27*cdf0e10cSrcweir 
28*cdf0e10cSrcweir // MARKER(update_precomp.py): autogen include statement, do not remove
29*cdf0e10cSrcweir #include "precompiled_slideshow.hxx"
30*cdf0e10cSrcweir 
31*cdf0e10cSrcweir #include <canvas/debug.hxx>
32*cdf0e10cSrcweir #include <basegfx/numeric/ftools.hxx>
33*cdf0e10cSrcweir #include <basegfx/matrix/b2dhommatrix.hxx>
34*cdf0e10cSrcweir #include <basegfx/matrix/b2dhommatrixtools.hxx>
35*cdf0e10cSrcweir #include "barndoorwipe.hxx"
36*cdf0e10cSrcweir 
37*cdf0e10cSrcweir 
38*cdf0e10cSrcweir namespace slideshow {
39*cdf0e10cSrcweir namespace internal {
40*cdf0e10cSrcweir 
41*cdf0e10cSrcweir ::basegfx::B2DPolyPolygon BarnDoorWipe::operator () ( double t )
42*cdf0e10cSrcweir {
43*cdf0e10cSrcweir     if (m_doubled)
44*cdf0e10cSrcweir         t /= 2.0;
45*cdf0e10cSrcweir 
46*cdf0e10cSrcweir     basegfx::B2DHomMatrix aTransform(basegfx::tools::createTranslateB2DHomMatrix(-0.5, -0.5));
47*cdf0e10cSrcweir     aTransform.scale( ::basegfx::pruneScaleValue(t), 1.0 );
48*cdf0e10cSrcweir     aTransform.translate( 0.5, 0.5 );
49*cdf0e10cSrcweir     ::basegfx::B2DPolygon poly( m_unitRect );
50*cdf0e10cSrcweir     poly.transform( aTransform );
51*cdf0e10cSrcweir     ::basegfx::B2DPolyPolygon res(poly);
52*cdf0e10cSrcweir 
53*cdf0e10cSrcweir     if (m_doubled) {
54*cdf0e10cSrcweir         aTransform = basegfx::tools::createTranslateB2DHomMatrix(-0.5, -0.5);
55*cdf0e10cSrcweir         aTransform.rotate( M_PI_2 );
56*cdf0e10cSrcweir         aTransform.translate( 0.5, 0.5 );
57*cdf0e10cSrcweir         poly.transform( aTransform );
58*cdf0e10cSrcweir         res.append(poly);
59*cdf0e10cSrcweir     }
60*cdf0e10cSrcweir 
61*cdf0e10cSrcweir     return res;
62*cdf0e10cSrcweir }
63*cdf0e10cSrcweir 
64*cdf0e10cSrcweir }
65*cdf0e10cSrcweir }
66