Feat: more math functions

Author: jcs090218

Assets/JCSUnity/Scripts/Util/JCS_Mathf.cs

@@ -553,6 +553,19 @@ public static float Tan(float deg)
             return Mathf.Tan(DegreeToRadian(deg));
         }
 
+        /// <summary>
+        /// Return angle on axis.
+        /// </summary>
+        /// <param name="self"> Starting vector. </param>
+        /// <param name="other"> Compare vector. </param>
+        /// <param name="axis"> Target axis to get. </param>
+        public static float AngleOnAxis(Vector3 self, Vector3 other, Vector3 axis)
+        {
+            Vector3 perpendicularSelf = Vector3.Cross(axis, self);
+            Vector3 perpendicularOther = Vector3.Cross(axis, other);
+            return Vector3.SignedAngle(perpendicularSelf, perpendicularOther, axis);
+        }
+
         /// <summary>
         /// Truncate float number.
         /// 

Assets/JCSUnity/Scripts/Util/JCS_Random.cs

@@ -138,5 +138,58 @@ public static Vector3 PointInSphere(Vector3 centerPosition, float radius)
             Vector3 randomPoint = Random.insideUnitSphere * radius;
             return centerPosition + randomPoint;
         }
+
+        /// <summary>
+        /// Return a random vector 2 int.
+        /// </summary>
+        public static Vector2Int Vector2Int(int min, int max)
+        {
+            int x = Range(min, max);
+            int y = Range(min, max);
+            return new Vector2Int(x, y);
+        }
+
+        /// <summary>
+        /// Return a random vector 2.
+        /// </summary>
+        public static Vector2 Vector2(float min, float max)
+        {
+            float x = Range(min, max);
+            float y = Range(min, max);
+            return new Vector2(x, y);
+        }
+
+        /// <summary>
+        /// Return a random vector 3 int.
+        /// </summary>
+        public static Vector3Int Vector3Int(int min, int max)
+        {
+            int x = Range(min, max);
+            int y = Range(min, max);
+            int z = Range(min, max);
+            return new Vector3Int(x, y, z);
+        }
+
+        /// <summary>
+        /// Return a random vector 3.
+        /// </summary>
+        public static Vector3 Vector3(float min, float max)
+        {
+            float x = Range(min, max);
+            float y = Range(min, max);
+            float z = Range(min, max);
+            return new Vector3(x, y, z);
+        }
+
+        /// <summary>
+        /// Return a random Quaternion.
+        /// </summary>
+        public static Quaternion Quaternion(float min, float max)
+        {
+            float x = Range(min, max);
+            float y = Range(min, max);
+            float z = Range(min, max);
+            return UnityEngine.Quaternion.Euler(x, y, z);
+        }
     }
 }