Added a new region-based mask type and the ability to combine masks.

src/main/java/com/sk89q/worldedit/masks/RegionMask.java

@@ -0,0 +1,38 @@
+// $Id$
+/*
+ * WorldEdit
+ * Copyright (C) 2010, 2011 sk89q <http://www.sk89q.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package com.sk89q.worldedit.masks;
+
+import com.sk89q.worldedit.EditSession;
+import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.regions.Region;
+
+public class RegionMask implements Mask {
+    
+    private Region region;
+    
+    public RegionMask(Region region) {
+        this.region = region;
+    }
+
+    public boolean matches(EditSession editSession, Vector pos) {
+        return region.contains(pos);
+    }
+
+}