using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Signal_Generator
{
    class FmSignal : IAnalogSignal
    {
        private double ampl = 0;
        private double freq = 0;
        private IAnalogSignal modSignal;

        public string ParamsToString
        {
            get
            {
                return this.ToString() + 
                    " | А = " + ampl + 
                    " | f = " + freq;
            }
        }

        public override string ToString()
        {
            return "FM signal";
        }

        public FmSignal(double ampl, double freq, IAnalogSignal modSignal)
        {
            this.ampl = ampl;
            this.freq = freq;
            this.modSignal = modSignal;
        }
        
        public double currentAmplitude(double t)
        {
            return ampl * Math.Sin(2 * Math.PI * freq * t + modSignal.currentAmplitude(t));
        }
    }
}