using UnityEngine;

namespace BITKit.Physics
{
    public static class PhysicsUtils
    {
        public static void FixCollidersBound(params Transform[] transforms)
        {
            foreach (var transform in transforms)
            {
                // 获取或创建 BoxCollider 组件
                var boxCollider = transform.GetComponent<BoxCollider>();
                if (boxCollider == null)
                {
                    continue;
                }

                // 获取所有可见的 MeshRenderer 组件
                var meshRenderers = transform.GetComponentsInChildren<MeshRenderer>();

                if (meshRenderers.Length == 0)
                {
                    Debug.LogWarning("No MeshRenderer components found in children.");
                    return;
                }

                // 初始化包围盒，以第一个 MeshRenderer 的包围盒为基准
                Bounds bounds = new Bounds(transform.transform.InverseTransformPoint(meshRenderers[0].bounds.center),
                    transform.transform.InverseTransformVector(meshRenderers[0].bounds.size));

                // 遍历所有 MeshRenderer，合并包围盒
                for (int i = 1; i < meshRenderers.Length; i++)
                {
                    Bounds localBounds = meshRenderers[i].bounds;
                    Vector3 localCenter = transform.transform.InverseTransformPoint(localBounds.center);
                    Vector3 localSize = transform.transform.InverseTransformVector(localBounds.size);

                    bounds.Encapsulate(new Bounds(localCenter, localSize));
                }

                // 设置 BoxCollider 的中心和大小
                boxCollider.center = bounds.center;
                boxCollider.size = bounds.size;
            }
        }
    }
}