问如何在Unity中查看圆柱体的内部？

EN

[RequireComponent(typeof(MeshFilter))]
public class MeshInverter : MonoBehaviour
{
    void Start()
    {
        var meshFilter = GetComponent<MeshFilter>();
        var triss = meshFilter.sharedMesh.triangles;
        var normals=meshFilter.sharedMesh.normals;
        for (int i=0;i<normals.Length;i++)
            normals[i]=-normals[i];
        for (int i = 0; i < triss.Length / 3; i++)
        {
            int temp = triss[i * 3 + 1];
            triss[i * 3 + 1] = triss[i * 3];
            triss[i * 3] = temp;
        }
        Mesh mesh=Instantiate(meshFilter.sharedMesh);
        mesh.triangles=triss;
        mesh.normals=normals;
        meshFilter.mesh=mesh;
    }
}