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27 
28 #if ! defined INCLUDED_SLIDESHOW_SPIRALWIPE_HXX
29 #define INCLUDED_SLIDESHOW_SPIRALWIPE_HXX
30 
31 #include "parametricpolypolygon.hxx"
32 #include <basegfx/numeric/ftools.hxx>
33 #include <basegfx/point/b2dpoint.hxx>
34 
35 
36 namespace slideshow {
37 namespace internal {
38 
39 /// Generates a topLeftClockWise or
40 /// bottomLeftCounterClockWise (flipOnYAxis=true) spiral wipe:
41 class SpiralWipe : public ParametricPolyPolygon
42 {
43 public:
44     SpiralWipe( sal_Int32 nElements, bool flipOnYAxis = false );
45     virtual ::basegfx::B2DPolyPolygon operator () ( double t );
46 protected:
47     ::basegfx::B2DPolyPolygon calcNegSpiral( double t ) const;
48 
49     const sal_Int32 m_elements;
50     const sal_Int32 m_sqrtElements;
51     const bool m_flipOnYAxis;
52 };
53 
54 /// Generates a twoBoxLeft or fourBoxHorizontal wipe:
55 class BoxSnakesWipe : public SpiralWipe
56 {
57 public:
58     BoxSnakesWipe( sal_Int32 nElements, bool fourBox = false )
59         : SpiralWipe(nElements), m_fourBox(fourBox) {}
60     virtual ::basegfx::B2DPolyPolygon operator () ( double t );
61 private:
62     const bool m_fourBox;
63 };
64 
65 }
66 }
67 
68 #endif /* INCLUDED_SLIDESHOW_SPIRALWIPE_HXX */
69