feature: 基本完成绑定

Assets/Models/Bond.cs

@@ -1,4 +1,5 @@
 using UnityEngine;
+using Utils;
 
 namespace Models
 {
@@ -12,6 +13,7 @@ namespace Models
         private readonly GameObject _bond;
 
         public Quaternion Rotation => _bond.transform.rotation;
+        public Vector3 Vector => End.transform.position - Start.transform.position;
         
         public Bond(GameObject start,GameObject end,float scale)
         {