齐次坐标中的仿射变换:平移不起作用，c#

[1 0 0 tx]
[0 1 0 ty]
[0 0 1 tz]
[0 0 0  1]

using System;
using System.Numerics;

class Program
{
    static void Main()
    {
        Vector3 point = new Vector3(1, 2, 3); // 原始点的坐标

        // 定义平移矩阵
        Matrix4x4 translationMatrix = Matrix4x4.CreateTranslation(2, 3, 4);

        // 进行平移变换
        Vector3 transformedPoint = Vector3.Transform(point, translationMatrix);

        Console.WriteLine("原始点坐标: " + point);
        Console.WriteLine("平移后的点坐标: " + transformedPoint);
    }
}

原始点坐标: (1, 2, 3)
平移后的点坐标: (3, 5, 7)