//The TimingFramework implementation doesn't respect the SMIL specification about the returned Y value
/*Interpolator splines = new SplineInterpolator((float) control1.getX(),
(float) control1.getY(),
(float) control2.getX(), (float) control2.getY());*/
Interpolator splines = new BezierInterpolator((float) control1.getX(),
(float) control1.getY(),
(float) control2.getX(), (float) control2.getY());
return splines;
}