Added a version of distance that doesn't do the square root.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3407 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/media/util/MathUtil.java

@@ -1,5 +1,5 @@
 //
-// $Id: MathUtil.java,v 1.12 2004/11/04 04:52:31 mdb Exp $
+// $Id$
 //
 // Narya library - tools for developing networked games
 // Copyright (C) 2002-2004 Three Rings Design, Inc., All Rights Reserved
@@ -40,6 +40,14 @@ public class MathUtil
         return Math.min(high, Math.max(low, value));
     }
 
+    /**
+     * Return the squared distance between the given points.
+     */
+    public static int distanceSq (int x0, int y0, int x1, int y1)
+    {
+	return ((x1 - x0) * (x1 - x0)) + ((y1 - y0) * (y1 - y0));
+    }
+
     /**
      * Return the distance between the given points.
      */