InterferometricMeasurement.cs

using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

namespace SL3Reader;

[StructLayout(LayoutKind.Sequential, Size = Size)]
internal readonly ref struct InterferometricMeasurement
{
    public const int Size = 2 * sizeof(float);
    public readonly float Delta;
    public readonly float Depth;
    public readonly bool IsValid
    {
        [SkipLocalsInit, MethodImpl(MethodImplOptions.AggressiveInlining)]
        get => !double.IsNaN(Delta) && !double.IsNaN(Depth) && Delta is not < 0.001f and not > 1000.0f && Depth is not < 1f and not > 250.0f;
    }
    public readonly float MetricDistance
    {
        [SkipLocalsInit, MethodImpl(MethodImplOptions.AggressiveInlining)]
        get => .3048f * float.Hypot(Delta, Depth);
    }

    public readonly float AngleInDegrees
    {
        [SkipLocalsInit, MethodImpl(MethodImplOptions.AggressiveInlining)]
        get => 90 - 360 / float.Tau * float.Atan2(Depth, Delta);
    }

    public override readonly string ToString() => $"{Delta};{Depth}";
}