namespace FluidSim.Interfaces
{
    /// <summary>
    /// A Connection that also produces an audio sample from the pressure drop across it.
    /// </summary>
    public class SoundConnection : Connection
    {
        /// <summary>Gain applied to the normalised pressure difference.</summary>
        public float Gain { get; set; } = 1.0f;

        /// <summary>Reference pressure used for normalisation (Pa). Default: 1 atm.</summary>
        public double ReferencePressure { get; set; } = 101325.0;

        public SoundConnection(Port a, Port b) : base(a, b) { }

        /// <summary>
        /// Returns a normalised audio sample proportional to the pressure difference.
        /// </summary>
        public float GetAudioSample()
        {
            double dp = PortA.Pressure - PortB.Pressure;
            return (float)(dp / ReferencePressure) * Gain;
        }
    }
}