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21 
22 
23 
24 #if ! defined INCLUDED_SLIDESHOW_CHECKERBOARDWIPE_HXX
25 #define INCLUDED_SLIDESHOW_CHECKERBOARDWIPE_HXX
26 
27 #include <osl/diagnose.h>
28 
29 #include "transitiontools.hxx"
30 #include "parametricpolypolygon.hxx"
31 
32 
33 namespace slideshow {
34 namespace internal {
35 
36 /// Generate a check board wipe (across)
37 class CheckerBoardWipe : public ParametricPolyPolygon
38 {
39 public:
CheckerBoardWipe(sal_Int32 unitsPerEdge=10)40     CheckerBoardWipe( sal_Int32 unitsPerEdge = 10 )
41         : m_unitsPerEdge(unitsPerEdge),
42           m_unitRect( createUnitRect() )
43         { OSL_ASSERT( (unitsPerEdge % 2) == 0 ); }
44     virtual ::basegfx::B2DPolyPolygon operator () ( double x );
45 private:
46     const sal_Int32 m_unitsPerEdge;
47     const ::basegfx::B2DPolyPolygon m_unitRect;
48 };
49 
50 }
51 }
52 
53 #endif /* INCLUDED_SLIDESHOW_CHECKERBOARDWIPE_HXX */
54