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21 
22 
23 
24 // MARKER(update_precomp.py): autogen include statement, do not remove
25 #include "precompiled_slideshow.hxx"
26 
27 #include <canvas/debug.hxx>
28 #include <basegfx/matrix/b2dhommatrix.hxx>
29 #include <basegfx/matrix/b2dhommatrixtools.hxx>
30 #include "iriswipe.hxx"
31 
32 
33 namespace slideshow {
34 namespace internal {
35 
operator ()(double t)36 ::basegfx::B2DPolyPolygon IrisWipe::operator () ( double t )
37 {
38     const double d = ::basegfx::pruneScaleValue(t);
39     basegfx::B2DHomMatrix aTransform(basegfx::tools::createTranslateB2DHomMatrix(-0.5, -0.5));
40     aTransform = basegfx::tools::createScaleTranslateB2DHomMatrix(d, d, 0.5, 0.5) * aTransform;
41 
42     ::basegfx::B2DPolyPolygon res( m_unitRect );
43     res.transform( aTransform );
44     return res;
45 }
46 
47 }
48 }
49