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Unity/Extensions/FPS/SpringEulerAngle.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace BITKit
+{
+    [System.Serializable]
+    public class SpringEulerAngle
+    {
+        public float damp = 20;
+        public float frequence = 15;
+        [HideInInspector]
+        public Vector3 value = Vector2.zero;
+        Vector3 dampValue = Vector2.zero;
+
+
+        public void Clear()
+        {
+            value = Vector2.zero;
+            dampValue = Vector2.zero;
+        }
+
+        public void Update(float deltaTime, Vector3 target)
+        {
+            value -= dampValue * deltaTime * frequence;
+            dampValue = eulerLerp(dampValue, value - target, deltaTime * damp);
+        }
+        public static Vector3 eulerLerp(Vector3 left, Vector3 right, float t)
+        {
+            Vector3 ret;
+            ret.x = Mathf.LerpAngle(left.x, right.x, t);
+            ret.y = Mathf.LerpAngle(left.y, right.y, t);
+            ret.z = Mathf.LerpAngle(left.z, right.z, t);
+            return ret;
+        }
+    }
+}