--- a/labs/openlayers/lib/OpenLayers/Geometry/Curve.js
+++ b/labs/openlayers/lib/OpenLayers/Geometry/Curve.js
@@ -1,1 +1,94 @@
+/* Copyright (c) 2006-2010 by OpenLayers Contributors (see authors.txt for 
+ * full list of contributors). Published under the Clear BSD license.  
+ * See http://svn.openlayers.org/trunk/openlayers/license.txt for the
+ * full text of the license. */
 
+/**
+ * @requires OpenLayers/Geometry/MultiPoint.js
+ */
+
+/**
+ * Class: OpenLayers.Geometry.Curve
+ * A Curve is a MultiPoint, whose points are assumed to be connected. To 
+ * this end, we provide a "getLength()" function, which iterates through 
+ * the points, summing the distances between them. 
+ * 
+ * Inherits: 
+ *  - <OpenLayers.Geometry.MultiPoint>
+ */
+OpenLayers.Geometry.Curve = OpenLayers.Class(OpenLayers.Geometry.MultiPoint, {
+
+    /**
+     * Property: componentTypes
+     * {Array(String)} An array of class names representing the types of 
+     *                 components that the collection can include.  A null 
+     *                 value means the component types are not restricted.
+     */
+    componentTypes: ["OpenLayers.Geometry.Point"],
+
+    /**
+     * Constructor: OpenLayers.Geometry.Curve
+     * 
+     * Parameters:
+     * point - {Array(<OpenLayers.Geometry.Point>)}
+     */
+    initialize: function(points) {
+        OpenLayers.Geometry.MultiPoint.prototype.initialize.apply(this, 
+                                                                  arguments);
+    },
+    
+    /**
+     * APIMethod: getLength
+     * 
+     * Returns:
+     * {Float} The length of the curve
+     */
+    getLength: function() {
+        var length = 0.0;
+        if ( this.components && (this.components.length > 1)) {
+            for(var i=1, len=this.components.length; i<len; i++) {
+                length += this.components[i-1].distanceTo(this.components[i]);
+            }
+        }
+        return length;
+    },
+
+    /**
+     * APIMethod: getGeodesicLength
+     * Calculate the approximate length of the geometry were it projected onto
+     *     the earth.
+     *
+     * projection - {<OpenLayers.Projection>} The spatial reference system
+     *     for the geometry coordinates.  If not provided, Geographic/WGS84 is
+     *     assumed.
+     * 
+     * Returns:
+     * {Float} The appoximate geodesic length of the geometry in meters.
+     */
+    getGeodesicLength: function(projection) {
+        var geom = this;  // so we can work with a clone if needed
+        if(projection) {
+            var gg = new OpenLayers.Projection("EPSG:4326");
+            if(!gg.equals(projection)) {
+                geom = this.clone().transform(projection, gg);
+            }
+        }
+        var length = 0.0;
+        if(geom.components && (geom.components.length > 1)) {
+            var p1, p2;
+            for(var i=1, len=geom.components.length; i<len; i++) {
+                p1 = geom.components[i-1];
+                p2 = geom.components[i];
+                // this returns km and requires lon/lat properties
+                length += OpenLayers.Util.distVincenty(
+                    {lon: p1.x, lat: p1.y}, {lon: p2.x, lat: p2.y}
+                );
+            }
+        }
+        // convert to m
+        return length * 1000;
+    },
+
+    CLASS_NAME: "OpenLayers.Geometry.Curve"
+});
+