Revise anchor data structure.

Assets/Cryville/Crtr/Anchor.cs

@@ -2,14 +2,11 @@
 
 namespace Cryville.Crtr {
 	public class Anchor {
-		bool _opened;
-		public bool Opened { get { return _opened; } }
+		public int Name { get; private set; }
 		public Transform Transform { get; set; }
-		public void Open() {
-			_opened = true;
-		}
-		public void Close() {
-			_opened = false;
+		public Anchor(int name, Transform transform) {
+			Name = name;
+			Transform = transform;
 		}
 	}
 }