Add a cylindrical region selector.

- Supports shift
- Supports expand/contract on the y axis
- getArea is slightly inaccurate, but more accuracy would mean more CPU usage.
- Displays as a cuboid in legacy mode.

src/main/java/com/sk89q/worldedit/cui/SelectionCylinderEvent.java

@@ -0,0 +1,47 @@
+// $Id$
+/*
+ * 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.cui;
+
+import com.sk89q.worldedit.Vector;
+import com.sk89q.worldedit.Vector2D;
+
+public class SelectionCylinderEvent implements CUIEvent {
+
+    protected Vector pos;
+    protected Vector2D radius;
+
+    public SelectionCylinderEvent(Vector pos, Vector2D radius) {
+        this.pos = pos;
+        this.radius = radius;
+    }
+
+    public String getTypeId() {
+        return "cyl";
+    }
+
+    public String[] getParameters() {
+        return new String[] {
+                    String.valueOf(pos.getBlockX()),
+                    String.valueOf(pos.getBlockY()),
+                    String.valueOf(pos.getBlockZ()),
+                    String.valueOf(radius.getX()),
+                    String.valueOf(radius.getZ())
+                };
+    }
+}