/// acceleration until halfway, then deceleration
/// http://robertpenner.com/easing/
public static float FunctionEaseInOutExpo(float t, float p = 10)
{
var s = FloatMath.Pow(2, -2 * p) / 2;
var e = 1 - FloatMath.Pow(2, -p) / 2;
if (t < 0.5)
{
return((FloatMath.Pow(2, p * (2 * t - 1)) / 2 - s) / (e - s));
}
return((1 - FloatMath.Pow(2, -p * (2 * t - 1)) / 2 - s) / (e - s));
}
/// decelerating to zero velocity
/// http://robertpenner.com/easing/
public static float FunctionEaseOutExpo(float t, float p = 10)
{
return((1 - FloatMath.Pow(2, -p * t)) / (1 - FloatMath.Pow(2, -p)));
}
/// accelerating from zero velocity
/// http://robertpenner.com/easing/
public static float FunctionEaseInExpo(float t, float p = 10f)
{
var s = FloatMath.Pow(2, -p);
return((FloatMath.Pow(2, p * (t - 1)) - s) / (1 - s));
}