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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 "iriswipe.hxx"
35 
36 
37 namespace slideshow {
38 namespace internal {
39 
40 ::basegfx::B2DPolyPolygon IrisWipe::operator () ( double t )
41 {
42     const double d = ::basegfx::pruneScaleValue(t);
43     basegfx::B2DHomMatrix aTransform(basegfx::tools::createTranslateB2DHomMatrix(-0.5, -0.5));
44     aTransform = basegfx::tools::createScaleTranslateB2DHomMatrix(d, d, 0.5, 0.5) * aTransform;
45 
46     ::basegfx::B2DPolyPolygon res( m_unitRect );
47     res.transform( aTransform );
48     return res;
49 }
50 
51 }
52 }
53