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27 
28 #if ! defined INCLUDED_SLIDESHOW_CHECKERBOARDWIPE_HXX
29 #define INCLUDED_SLIDESHOW_CHECKERBOARDWIPE_HXX
30 
31 #include <osl/diagnose.h>
32 
33 #include "transitiontools.hxx"
34 #include "parametricpolypolygon.hxx"
35 
36 
37 namespace slideshow {
38 namespace internal {
39 
40 /// Generate a check board wipe (across)
41 class CheckerBoardWipe : public ParametricPolyPolygon
42 {
43 public:
44     CheckerBoardWipe( sal_Int32 unitsPerEdge = 10 )
45         : m_unitsPerEdge(unitsPerEdge),
46           m_unitRect( createUnitRect() )
47         { OSL_ASSERT( (unitsPerEdge % 2) == 0 ); }
48     virtual ::basegfx::B2DPolyPolygon operator () ( double x );
49 private:
50     const sal_Int32 m_unitsPerEdge;
51     const ::basegfx::B2DPolyPolygon m_unitRect;
52 };
53 
54 }
55 }
56 
57 #endif /* INCLUDED_SLIDESHOW_CHECKERBOARDWIPE_HXX */
58