namespace Encompass
{
    internal struct TimeDilationData
    {
        public double elapsedTime;
        public double easeInTime;
        public System.Func<double, double, double, double, double> easeInFunction;
        public double activeTime;
        public double easeOutTime;
        public System.Func<double, double, double, double, double> easeOutFunction;
        public double factor;

        public double Factor
        {
            get
            {
                if (elapsedTime < easeInTime)
                {
                    return easeInFunction(elapsedTime, 1, factor - 1, easeInTime);
                }
                else if (elapsedTime < easeInTime + activeTime)
                {
                    return factor;
                }
                else if (elapsedTime < easeInTime + activeTime + easeOutTime)
                {
                    var elapsedOutTime = elapsedTime - easeInTime - activeTime;
                    return easeOutFunction(elapsedOutTime, factor, 1 - factor, easeOutTime);
                }

                return 1;
            }
        }
    }
}