From 842c46928595511acddaea24a13fe08d95b160a6 Mon Sep 17 00:00:00 2001
From: aumgn <aumgn@free.fr>
Date: Tue, 20 Mar 2012 15:14:41 +0100
Subject: [PATCH] Make regions Cloneable

---
 .../java/com/sk89q/worldedit/regions/AbstractRegion.java  | 8 ++++++++
 .../java/com/sk89q/worldedit/regions/CuboidRegion.java    | 4 ++++
 .../java/com/sk89q/worldedit/regions/CylinderRegion.java  | 4 ++++
 .../java/com/sk89q/worldedit/regions/EllipsoidRegion.java | 4 ++++
 .../com/sk89q/worldedit/regions/Polygonal2DRegion.java    | 6 ++++++
 src/main/java/com/sk89q/worldedit/regions/Region.java     | 4 +++-
 6 files changed, 29 insertions(+), 1 deletion(-)

diff --git a/src/main/java/com/sk89q/worldedit/regions/AbstractRegion.java b/src/main/java/com/sk89q/worldedit/regions/AbstractRegion.java
index 8896f9833..96507ab2e 100644
--- a/src/main/java/com/sk89q/worldedit/regions/AbstractRegion.java
+++ b/src/main/java/com/sk89q/worldedit/regions/AbstractRegion.java
@@ -66,4 +66,12 @@ public abstract class AbstractRegion implements Region {
         expand(change);
         contract(change);
     }
+
+    public AbstractRegion clone() {
+        try {
+            return (AbstractRegion) super.clone();
+        } catch (CloneNotSupportedException exc) {
+            return null;
+        }
+    }
 }
diff --git a/src/main/java/com/sk89q/worldedit/regions/CuboidRegion.java b/src/main/java/com/sk89q/worldedit/regions/CuboidRegion.java
index c46de4ae6..16e4028c9 100644
--- a/src/main/java/com/sk89q/worldedit/regions/CuboidRegion.java
+++ b/src/main/java/com/sk89q/worldedit/regions/CuboidRegion.java
@@ -434,4 +434,8 @@ public class CuboidRegion extends AbstractRegion implements FlatRegion {
     public String toString() {
         return getMinimumPoint() + " - " + getMaximumPoint();
     }
+
+    public CuboidRegion clone() {
+        return (CuboidRegion) super.clone();
+    }
 }
diff --git a/src/main/java/com/sk89q/worldedit/regions/CylinderRegion.java b/src/main/java/com/sk89q/worldedit/regions/CylinderRegion.java
index 3c21db4b5..f6da7d825 100644
--- a/src/main/java/com/sk89q/worldedit/regions/CylinderRegion.java
+++ b/src/main/java/com/sk89q/worldedit/regions/CylinderRegion.java
@@ -388,4 +388,8 @@ public class CylinderRegion extends AbstractRegion implements FlatRegion {
     public String toString() {
         return center + " - " + radius;
     }
+
+    public CylinderRegion clone() {
+        return (CylinderRegion) super.clone();
+    }
 }
diff --git a/src/main/java/com/sk89q/worldedit/regions/EllipsoidRegion.java b/src/main/java/com/sk89q/worldedit/regions/EllipsoidRegion.java
index f212f778b..77664a902 100644
--- a/src/main/java/com/sk89q/worldedit/regions/EllipsoidRegion.java
+++ b/src/main/java/com/sk89q/worldedit/regions/EllipsoidRegion.java
@@ -275,4 +275,8 @@ public class EllipsoidRegion extends AbstractRegion {
     public void extendRadius(Vector minRadius) {
         setRadius(Vector.getMaximum(minRadius, getRadius()));
     }
+
+    public EllipsoidRegion clone() {
+        return (EllipsoidRegion) super.clone();
+    }
 }
diff --git a/src/main/java/com/sk89q/worldedit/regions/Polygonal2DRegion.java b/src/main/java/com/sk89q/worldedit/regions/Polygonal2DRegion.java
index 9dcaa5d41..d5d140e5e 100644
--- a/src/main/java/com/sk89q/worldedit/regions/Polygonal2DRegion.java
+++ b/src/main/java/com/sk89q/worldedit/regions/Polygonal2DRegion.java
@@ -519,4 +519,10 @@ public class Polygonal2DRegion extends AbstractRegion implements FlatRegion {
         sb.append(" * (" + minY + " - " + maxY + ")");
         return sb.toString();
     }
+
+    public Polygonal2DRegion clone() {
+        Polygonal2DRegion clone = (Polygonal2DRegion) super.clone();
+        clone.points = new ArrayList<BlockVector2D>(points);
+        return clone; 
+    }
 }
diff --git a/src/main/java/com/sk89q/worldedit/regions/Region.java b/src/main/java/com/sk89q/worldedit/regions/Region.java
index 78c055f0f..309bf17b6 100644
--- a/src/main/java/com/sk89q/worldedit/regions/Region.java
+++ b/src/main/java/com/sk89q/worldedit/regions/Region.java
@@ -29,7 +29,7 @@ import java.util.Set;
  *
  * @author sk89q
  */
-public interface Region extends Iterable<BlockVector> {
+public interface Region extends Iterable<BlockVector>, Cloneable {
     /**
      * Get the lower point of a region.
      *
@@ -151,4 +151,6 @@ public interface Region extends Iterable<BlockVector> {
      * @return
      */
     public void setWorld(LocalWorld world);
+
+    public Region clone();
 }