*

Assets/Scripts/ZoneVisibilityControl.cs

@@ -0,0 +1,72 @@
+using UnityEngine;
+using System.Collections;
+
+/*public class VisibilityZone{
+
+
+	public VisibilityZone(GameObject src, float overlayDepth){
+
+	}
+
+
+}*/
+
+public class ZoneVisibilityControl : Predicate {
+	#region implemented abstract members of Predicate
+	protected override bool CheckInternal ()
+	{
+		return false;
+	}
+	protected override bool CheckInternal (object param)
+	{
+		var z = param as VisibilityZone;
+		if(z == null){
+			return false;
+		}
+		return z.IsInside(viewer.transform.position);
+	}
+	#endregion
+
+	private VisibilityZone[] zones;
+	public GameObject viewer;
+	private VisibilityZone currentVisible;
+	public Material hideMaterial;
+	public float hideDepth = -1.0f;
+	
+	// Use this for initialization
+	void Start () {
+		zones = FindObjectsOfType<VisibilityZone>();
+		foreach(var zone in zones){
+			zone.Init();
+			zone.Hide(hideMaterial, hideDepth);
+		}
+	}
+	
+	void UpateVisibility(){
+		foreach(var	zone in zones){
+			if(zone.IsInside(viewer.transform.position)){
+				if(currentVisible != zone){
+					if(currentVisible != null){
+						currentVisible.Hide (hideMaterial, hideDepth);
+					}
+
+					currentVisible = zone;
+					currentVisible.Show();
+
+				}
+				return;
+			}
+		}
+		if(currentVisible != null){
+			currentVisible.Hide (hideMaterial, hideDepth);
+			currentVisible = null;
+		}
+
+	}
+	// Update is called once per frame
+	void Update () {
+		//UpateVisibility();
+	}
+
+
+}