arfoundation-samples/Assets/Scripts/EnvironmentProbeVisualizer.cs

using UnityEngine;

[RequireComponent(typeof(MeshRenderer))]
public class EnvironmentProbeVisualizer : MonoBehaviour
{
    [SerializeField]
    ReflectionProbe m_ReflectionProbe;

    public ReflectionProbe reflectionProbe
    {
        get { return m_ReflectionProbe; }
        set { m_ReflectionProbe = value; }
    }

    void Update()
    {
        if (m_ReflectionProbe == null)
        {
            GetComponent<MeshRenderer>().enabled = false;
        }
        else
        {
            GetComponent<MeshRenderer>().enabled = true;

            transform.localPosition = m_ReflectionProbe.center;
            transform.localScale = m_ReflectionProbe.size;

            // Unity doesn't yet support rotated reflection probes, so the visualizer
            // needs to unrotate in order to display the box that will actually be used.
            transform.localRotation = Quaternion.Inverse(m_ReflectionProbe.transform.rotation);
        }
    }
}