EaseElasticOut method
Implementation
double EaseElasticOut(num t, num b, num c, num d)
{
if (t == 0.0) return b.toDouble();
if ((t/=d) == 1.0) return (b + c).toDouble();
final p = d*0.3;
final a = c;
final s = p/4.0;
return (a*math.pow(2.0,-10.0*t)*math.sin((t*d-s)*(2.0*rl.PI)/p) + c + b);
}