Added /editdrain, added BlockPoint that compares using ints.

src/com/sk89q/worldedit/BlockPoint.java

@@ -0,0 +1,65 @@
+// $Id$
+/*
+ * WorldEdit
+ * Copyright (C) 2010 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;
+
+/**
+ * Extension of Point that supports being compared as ints (for accuracy).
+ *
+ * @author sk89q
+ */
+public class BlockPoint extends Point {
+    /**
+     * Construct the Point object.
+     *
+     * @param pt
+     */
+    public BlockPoint(Point pt) {
+        super(pt);
+    }
+    
+    /**
+     * Checks if another object is equivalent.
+     *
+     * @param obj
+     * @return whether the other object is equivalent
+     */
+    @Override
+    public boolean equals(Object obj) {
+        if (!(obj instanceof Point)) {
+            return false;
+        }
+        Point other = (Point)obj;
+        return (int)other.x == (int)this.x && (int)other.y == (int)this.y
+                && (int)other.z == (int)this.z;
+
+    }
+
+    /**
+     * Gets the hash code.
+     *
+     * @return hash code
+     */
+    @Override
+    public int hashCode() {
+        return (Integer.valueOf((int)x).hashCode() >> 13) ^
+               (Integer.valueOf((int)y).hashCode() >> 7) ^
+                Integer.valueOf((int)z).hashCode();
+    }
+}

src/com/sk89q/worldedit/Point.java

@@ -23,8 +23,8 @@ package com.sk89q.worldedit;
  *
  * @author Albert
  */
-public final class Point {
-    private final double x, y, z;
+public class Point {
+    protected final double x, y, z;
 
     /**
      * Construct the Point object.
@@ -65,6 +65,17 @@ public final class Point {
         this.z = (double)z;
     }
 
+    /**
+     * Construct the Point object.
+     *
+     * @param pt
+     */
+    public Point(Point pt) {
+        this.x = pt.x;
+        this.y = pt.y;
+        this.z = pt.z;
+    }
+
     /**
      * Construct the Point object.
      */
@@ -303,6 +314,18 @@ public final class Point {
         return new Point(this.x / x, this.y / y, this.z / z);
     }
 
+    /**
+     * Get the distance away from a point.
+     *
+     * @param pt
+     * @return distance
+     */
+    public double distance(Point pt) {
+        return Math.sqrt(Math.pow(pt.x - x, 2) +
+                Math.pow(pt.y - y, 2) +
+                Math.pow(pt.z - z, 2));
+    }
+
     /**
      * Get a block point from a point.
      * 
@@ -344,4 +367,14 @@ public final class Point {
                 ((new Double(y)).hashCode() >> 7) ^
                 (new Double(z)).hashCode();
     }
+
+    /**
+     * Returns string representation "(x, y, z)".
+     *
+     * @return string
+     */
+    @Override
+    public String toString() {
+        return "(" + x + ", " + y + ", " + z + ")";
+    }
 }