unity: transform utilities

TransformUtilities.cs

using UnityEngine;

namespace Utilities
{

    // ----------------------------------------------------------------------------------------
    // refs:
    // https://stackoverflow.com/questions/33437244/find-children-of-children-of-a-gameobject
    // ----------------------------------------------------------------------------------------
    public static class TransformUtilities
    {
        public static Transform RecursiveFindChild(Transform parent, string childName)
        {
            foreach (Transform child in parent)
            {
                if (child.name == childName)
                {
                    return child;
                }
                else
                {
                    Transform found = RecursiveFindChild(child, childName);
                    if (found != null)
                    {
                        return found;
                    }
                }
            }
            return null;
        }

        public static void SetLossyScale(Transform target, Vector3 scale)
        {
            target.localScale = new Vector3(
                target.localScale.x / target.lossyScale.x * scale.x,
                target.localScale.y / target.lossyScale.y * scale.y,
                target.localScale.z / target.lossyScale.z * scale.z
            );
        }

        public static void SetLocalOrigin(Transform target, Transform parent)
        {
            target.parent = parent;
            target.localPosition = Vector3.zero;
            target.localRotation = Quaternion.identity;
            target.localScale = Vector3.one;
        }

        public static void DestroyChildren(Transform target)
        {
            foreach (Transform child in target)
            {
                Object.Destroy(child.gameObject);
            }
        }
    }
}