slideshow/source/engine/transitions/spiralwipe.hxx

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  30
  31 #if ! defined INCLUDED_SLIDESHOW_SPIRALWIPE_HXX
  32 #define INCLUDED_SLIDESHOW_SPIRALWIPE_HXX
  33
  34 #include "parametricpolypolygon.hxx"
  35 #include <basegfx/numeric/ftools.hxx>
  36 #include <basegfx/point/b2dpoint.hxx>
  37
  38
  39 namespace slideshow {
  40 namespace internal {
  41
  42 /// Generates a topLeftClockWise or
  43 /// bottomLeftCounterClockWise (flipOnYAxis=true) spiral wipe:
  44 class SpiralWipe : public ParametricPolyPolygon
  45 {
  46 public:
  47     SpiralWipe( sal_Int32 nElements, bool flipOnYAxis = false );
  48     virtual ::basegfx::B2DPolyPolygon operator () ( double t );
  49 protected:
  50     ::basegfx::B2DPolyPolygon calcNegSpiral( double t ) const;
  51
  52     const sal_Int32 m_elements;
  53     const sal_Int32 m_sqrtElements;
  54     const bool m_flipOnYAxis;
  55 };
  56
  57 /// Generates a twoBoxLeft or fourBoxHorizontal wipe:
  58 class BoxSnakesWipe : public SpiralWipe
  59 {
  60 public:
  61     BoxSnakesWipe( sal_Int32 nElements, bool fourBox = false )
  62         : SpiralWipe(nElements), m_fourBox(fourBox) {}
  63     virtual ::basegfx::B2DPolyPolygon operator () ( double t );
  64 private:
  65     const bool m_fourBox;
  66 };
  67
  68 }
  69 }
  70
  71 #endif /* INCLUDED_SLIDESHOW_SPIRALWIPE_HXX */