细节调整

线路材质&位置调整，海拔图区间优化，loading动画只执行一次问题解决，小地图的球替换成圆形图片

Assets/Scenes/Ride/Scripts/CyclingController.cs

@@ -75,6 +75,10 @@ public class CyclingController : DeviceServiceMonoBase
         resultPanel = transform.Find("SingleUI/Panel/ResultPanel").gameObject;
     }
 
+    void OnDestroy()
+    {
+        App.TextureCache.Clear();
+    }
     Transform target;
 
     private void Start()