StructTest

using System;

namespace Engine
{
    public struct TestVector
    {
        public float X;
        public float Y;
        public float Z;

        public float SumProperty => MathF.Sqrt(X + Y + Z);

        public readonly float SumPropertyReadonly => MathF.Sqrt(X + Y + Z);

        public float Sum()
        {
            return MathF.Sqrt(X + Y + Z);
        }

        public readonly float SumReadonly()
        {
            return MathF.Sqrt(X + Y + Z);
        }

        public TestVector(int x, int y, int z)
        {
            X = x;
            Y = y;
            Z = z;
        }
    }


    public static class TestExtensions
    {
        public static float SumExtension(this in TestVector v)
        {
            return MathF.Sqrt(v.X + v.Y + v.Z);
        }
    }


    public static class Program
    {
        private static void Main(string[] args)
        {
            var v = new TestVector(1, 2, 3);
            TestSum(v);
            TestSumReadonly(v);
            TestSumExtension(v);
            TestSumProperty(v);
            TestSumPropertyReadonly(v);
        }

        public static void TestSum(in TestVector v)
        {
            var sum = v.Sum();
            Console.WriteLine(sum);
        }

        public static void TestSumReadonly(in TestVector v)
        {
            var sumReadonly = v.SumReadonly();
            Console.WriteLine(sumReadonly);
        }

        public static void TestSumExtension(in TestVector v)
        {
            var sumExt = v.SumExtension();
            Console.WriteLine(sumExt);
        }

        public static void TestSumProperty(in TestVector v)
        {
            var sum = v.SumProperty;
            Console.WriteLine(sum);
        }

        public static void TestSumPropertyReadonly(in TestVector v)
        {
            var sumReadonly = v.SumPropertyReadonly;
            Console.WriteLine(sumReadonly);
        }

    }
}