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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 "boxwipe.hxx"
34 
35 
36 namespace slideshow {
37 namespace internal {
38 
39 ::basegfx::B2DPolyPolygon BoxWipe::operator () ( double t )
40 {
41     ::basegfx::B2DHomMatrix aTransform;
42     double d = ::basegfx::pruneScaleValue(t);
43     if (m_topCentered) {
44         aTransform.translate( -0.5, 0.0 );
45         aTransform.scale( d, d );
46         aTransform.translate( 0.5, 0.0 );
47     } else {
48         aTransform.scale( d, d );
49     }
50 
51     ::basegfx::B2DPolyPolygon res( m_unitRect );
52     res.transform( aTransform );
53     return res;
54 }
55 
56 }
57 }
58