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Assets/Dreamteck/Utilities/TransformUtility.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace Dreamteck
+{
+    public static class TransformUtility
+    {
+        public static Vector3 GetPosition(ref Matrix4x4 m)
+        {
+            return m.GetColumn(3);
+        }
+
+        public static Quaternion GetRotation(ref Matrix4x4 m)
+        {
+            return Quaternion.LookRotation(m.GetColumn(2), m.GetColumn(1));
+        }
+
+        public static Vector3 GetScale(ref Matrix4x4 m)
+        {
+            return new Vector3(m.GetColumn(0).magnitude, m.GetColumn(1).magnitude, m.GetColumn(2).magnitude);
+        }
+
+        public static void SetPosition(ref Matrix4x4 m, ref Vector3 p)
+        {
+            m.SetColumn(3, new Vector4(p.x, p.y, p.z, 1f));
+        }
+
+        public static void GetChildCount(Transform parent, ref int count)
+        {
+            foreach (Transform child in parent)
+            {
+                count++;
+                GetChildCount(child, ref count);
+            }
+        }
+
+        public static bool IsParent(Transform child, Transform parent)
+        {
+            Transform current = child;
+            while(current.parent != null)
+            {
+                current = current.parent;
+                if (current == parent) return true;
+            }
+            return false;
+        }
+    }
+}