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27 
28 // MARKER(update_precomp.py): autogen include statement, do not remove
29 #include "precompiled_slideshow.hxx"
30 
31 #include <canvas/debug.hxx>
32 #include <basegfx/matrix/b2dhommatrix.hxx>
33 #include <basegfx/matrix/b2dhommatrixtools.hxx>
34 #include "transitiontools.hxx"
35 #include "clockwipe.hxx"
36 #include "fanwipe.hxx"
37 
38 
39 namespace slideshow {
40 namespace internal {
41 
42 ::basegfx::B2DPolyPolygon FanWipe::operator () ( double t )
43 {
44     ::basegfx::B2DPolyPolygon res;
45     ::basegfx::B2DPolygon poly(
46         ClockWipe::calcCenteredClock(
47             t / ((m_center && m_single) ? 2.0 : 4.0) ) );
48 
49     res.append( poly );
50     // flip on y-axis:
51     poly.transform(basegfx::tools::createScaleB2DHomMatrix(-1.0, 1.0));
52     poly.flip();
53     res.append( poly );
54 
55     if (m_center)
56     {
57         res.transform(basegfx::tools::createScaleTranslateB2DHomMatrix(0.5, 0.5, 0.5, 0.5));
58 
59         if (! m_single)
60             res.append( flipOnXAxis(res) );
61     }
62     else
63     {
64         OSL_ASSERT( ! m_fanIn );
65         res.transform(basegfx::tools::createScaleTranslateB2DHomMatrix(0.5, 1.0, 0.5, 1.0));
66     }
67     return res;
68 }
69 
70 }
71 }
72 
73