カリンググループのサンプルコードその２

CullingGroupSpawn.cs

using UnityEngine;
using System.Collections;
using UnityEngine.SceneManagement;

public class CullingGroupSpawn : MonoBehaviour
{
	[SerializeField] Transform[] positions;
	[SerializeField] string sceneName; 	// 読み込むシーン名

	private CullingGroup cullingGroup = null;

	void Start ()
	{
		// cullingGroupの初期化
		cullingGroup = new CullingGroup ();
		cullingGroup.targetCamera = Camera.main;

		// 視認のステータスが更新された時に受け取るコールバック登録
		cullingGroup.onStateChanged += OnStateChange;

		// 座標を登録
		BoundingSphere[] bounds = new BoundingSphere[positions.Length];
		for (int i = 0; i < bounds.Length; i++) {
			bounds [i].position = positions [i].position;
			bounds [i].radius = positions[i].localScale.magnitude;
		}
		cullingGroup.SetBoundingSpheres (bounds);
		cullingGroup.SetBoundingSphereCount (positions.Length);
	}

	void OnStateChange (CullingGroupEvent ev)
	{
		// 見えたら、シーンをAditiveで読み込み
		// cullinggroupは停止する
		if (ev.hasBecomeVisible) {
			cullingGroup.enabled = false;
			var result = SceneManager.LoadSceneAsync (sceneName, LoadSceneMode.Additive);
			result.priority = 2;
		}
	}

	void OnDestroy ()
	{
		cullingGroup.Dispose ();
		cullingGroup = null;
	}

	void OnDrawGizmos ()
	{
#if UNITY_EDITOR
		UnityEditor.Handles.color = Color.red;
		foreach (var pos in positions) {
			UnityEditor.Handles.CircleCap(
				0, pos.position, 
				UnityEditor.SceneView.currentDrawingSceneView.camera.transform.rotation, 
				pos.localScale.magnitude);
		}
#endif
	}
}