【极简代码】Unity控制3D物体的自由旋转 缩放和移动

Unity中以最少代码，控制3D物体的自由旋转、缩放和移动。

using UnityEngine;

public class TestMatrix : MonoBehaviour
{
   
    float scaleparam = 0f;
    Vector3 oldScale;

    private void Start()
    {
   
        oldScale = transform.localScale;
    }

    private void Update()
    {
   
        void Trans_Rotation()
        {
   
            float mouse_x =