Clamping is a useful abstraction, and easy to slip up on.

Maybe more math idioms will end up in here as well?


git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@257 ed5b42cb-e716-0410-a449-f6a68f950b19

src/as/com/threerings/flash/MathUtil.as

@@ -0,0 +1,40 @@
+//
+// $Id$
+//
+// Nenya library - tools for developing networked games
+// Copyright (C) 2002-2007 Three Rings Design, Inc., All Rights Reserved
+// http://www.threerings.net/code/nenya/
+//
+// This library is free software; you can redistribute it and/or modify it
+// under the terms of the GNU Lesser General Public License as published
+// by the Free Software Foundation; either version 2.1 of the License, or
+// (at your option) any later version.
+//
+// This library 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
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+package com.threerings.flash {
+    
+
+/**
+ * Collection of math utility functions.
+ */
+public class MathUtil
+{
+    /**
+     * Returns the value of n clamped to be within the range [min, max].
+     */
+    public static function clamp (n :Number, min :Number, max :Number) :Number
+    {
+        return Math.min(Math.max(n, min), max);
+    }
+}
+
+}
+