slideshow/source/engine/transitions/snakewipe.hxx

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  30
  31 #if ! defined INCLUDED_SLIDESHOW_SNAKEWIPE_HXX
  32 #define INCLUDED_SLIDESHOW_SNAKEWIPE_HXX
  33
  34 #include "parametricpolypolygon.hxx"
  35
  36 #include <basegfx/numeric/ftools.hxx>
  37 #include <basegfx/point/b2dpoint.hxx>
  38
  39
  40 namespace slideshow {
  41 namespace internal {
  42
  43 /// Generates a snake wipe:
  44 class SnakeWipe : public ParametricPolyPolygon
  45 {
  46 public:
  47     SnakeWipe( sal_Int32 nElements, bool diagonal, bool flipOnYAxis );
  48     virtual ::basegfx::B2DPolyPolygon operator () ( double t );
  49
  50 protected:
  51     // topLeftHorizontal:
  52     ::basegfx::B2DPolyPolygon calcSnake( double t ) const;
  53     // topLeftDiagonal:
  54     ::basegfx::B2DPolyPolygon calcHalfDiagonalSnake( double t, bool in ) const;
  55
  56     const sal_Int32 m_sqrtElements;
  57     const double m_elementEdge;
  58     const bool m_diagonal;
  59     const bool m_flipOnYAxis;
  60 };
  61
  62 /// Generates a parallel snakes wipe:
  63 class ParallelSnakesWipe : public SnakeWipe
  64 {
  65 public:
  66     ParallelSnakesWipe( sal_Int32 nElements,
  67                         bool diagonal, bool flipOnYAxis, bool opposite )
  68         : SnakeWipe( nElements, diagonal, flipOnYAxis ),
  69           m_opposite( opposite )
  70         {}
  71     virtual ::basegfx::B2DPolyPolygon operator () ( double t );
  72 private:
  73     const bool m_opposite;
  74 };
  75
  76 }
  77 }
  78
  79 #endif /* INCLUDED_SLIDESHOW_SNAKEWIPE_HXX */