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21 
22 
23 
24 #if ! defined INCLUDED_SLIDESHOW_SPIRALWIPE_HXX
25 #define INCLUDED_SLIDESHOW_SPIRALWIPE_HXX
26 
27 #include "parametricpolypolygon.hxx"
28 #include <basegfx/numeric/ftools.hxx>
29 #include <basegfx/point/b2dpoint.hxx>
30 
31 
32 namespace slideshow {
33 namespace internal {
34 
35 /// Generates a topLeftClockWise or
36 /// bottomLeftCounterClockWise (flipOnYAxis=true) spiral wipe:
37 class SpiralWipe : public ParametricPolyPolygon
38 {
39 public:
40     SpiralWipe( sal_Int32 nElements, bool flipOnYAxis = false );
41     virtual ::basegfx::B2DPolyPolygon operator () ( double t );
42 protected:
43     ::basegfx::B2DPolyPolygon calcNegSpiral( double t ) const;
44 
45     const sal_Int32 m_elements;
46     const sal_Int32 m_sqrtElements;
47     const bool m_flipOnYAxis;
48 };
49 
50 /// Generates a twoBoxLeft or fourBoxHorizontal wipe:
51 class BoxSnakesWipe : public SpiralWipe
52 {
53 public:
BoxSnakesWipe(sal_Int32 nElements,bool fourBox=false)54     BoxSnakesWipe( sal_Int32 nElements, bool fourBox = false )
55         : SpiralWipe(nElements), m_fourBox(fourBox) {}
56     virtual ::basegfx::B2DPolyPolygon operator () ( double t );
57 private:
58     const bool m_fourBox;
59 };
60 
61 }
62 }
63 
64 #endif /* INCLUDED_SLIDESHOW_SPIRALWIPE_HXX */
65