sd/source/ui/slidesorter/inc/controller/SlsAnimationFunction.hxx

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  19
  20 #ifndef INCLUDED_SD_SOURCE_UI_SLIDESORTER_INC_CONTROLLER_SLSANIMATIONFUNCTION_HXX
  21 #define INCLUDED_SD_SOURCE_UI_SLIDESORTER_INC_CONTROLLER_SLSANIMATIONFUNCTION_HXX
  22
  23 #include "model/SlsSharedPageDescriptor.hxx"
  24 #include <basegfx/point/b2dpoint.hxx>
  25 #include <boost/noncopyable.hpp>
  26 #include <boost/function.hpp>
  27 #include <vector>
  28
  29 namespace sd { namespace slidesorter { namespace view {
  30 class SlideSorterView;
  31 } } }
  32
  33 namespace sd { namespace slidesorter { namespace controller {
  34
  35 class AnimationBezierFunction
  36 {
  37 public:
  38     /** Create a cubic bezier curve whose start and end points are given
  39         implicitly as P0=(0,0) and P3=(1,1).  The second control point is
  40         implicitly given as P2=(1-nY1,1-nX1).
  41     */
  42     AnimationBezierFunction (
  43         const double nX1,
  44         const double nY1);
  45
  46     ::basegfx::B2DPoint operator() (const double nT);
  47
  48 private:
  49     const double mnX1;
  50     const double mnY1;
  51     const double mnX2;
  52     const double mnY2;
  53
  54     static double EvaluateComponent (
  55         const double nT,
  56         const double nV1,
  57         const double nV2);
  58 };
  59
  60 /** Turn a parametric function into one whose y-Values depend on its
  61     x-Values.  Note a lot of interpolation takes place.  The resulting
  62     accuracy should be good enough for the purpose of acceleration
  63     function for animations.
  64 */
  65 class AnimationParametricFunction
  66 {
  67 public:
  68     typedef ::boost::function<basegfx::B2DPoint(double)> ParametricFunction;
  69     AnimationParametricFunction (const ParametricFunction& rFunction);
  70
  71     double operator() (const double nX);
  72
  73 private:
  74     /** y-Values of the parametric function given to the constructor
  75         evaluated (and interpolated) for evenly spaced x-Values.
  76     */
  77     ::std::vector<double> maY;
  78 };
  79
  80 } } } // end of namespace ::sd::slidesorter::controller
  81
  82 #endif
  83
  84 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */