Format/EncodedPolyline: Change default factor to 1e5

This matches the factors in the other methods and the default of the
original algorithm. Having this set at 1 before can be considered
as a bug.

lib/OpenLayers/Format/EncodedPolyline.js

@@ -103,7 +103,7 @@ OpenLayers.Format.EncodedPolyline = OpenLayers.Class(OpenLayers.Format, {
      *     coordinates.
      */
     decode: function(encoded, dims, opt_factor) {
-        var factor = opt_factor || 1;
+        var factor = opt_factor || 1e5;
         var flatPoints = this.decodeDeltas(encoded, dims, factor);
         var flatPointsLength = flatPoints.length;
 
@@ -179,7 +179,7 @@ OpenLayers.Format.EncodedPolyline = OpenLayers.Class(OpenLayers.Format, {
      * {String} An encoded string
      */
     encode: function (points, dims, opt_factor) {
-        var factor = opt_factor || 1;
+        var factor = opt_factor || 1e5;
         var flatPoints = [];
 
         var pointsLength = points.length;

tests/Format/EncodedPolyline.html

@@ -106,8 +106,8 @@
         for (i in decodedPoints) {
             var point = basePoints[i];
             var decodedPoint = decodedPoints[i];
-            t.eq(point[0], decodedPoint[0]);
+            t.eq(parseInt(decodedPoint[0] * 1e5), point[0]);
-            t.eq(point[1], decodedPoint[1]);
+            t.eq(parseInt(decodedPoint[1] * 1e5), point[1]);
         }
     }
 
@@ -141,7 +141,7 @@
 
         var format = new OpenLayers.Format.EncodedPolyline();
 
-        t.eq(format.encode(basePoints, 2), encoded);
+        t.eq(format.encode(basePoints, 2, 1), encoded);
     }
 
     function test_encodeDeltas_returns_expected_value(t) {