Handle righthanded polygons in format, not source

src/ol/format/featureformat.js

@@ -24,6 +24,12 @@ ol.format.Feature = function() {
    * @type {ol.proj.Projection}
    */
   this.defaultDataProjection = null;
+
+  /**
+   * @protected
+   * @type {boolean}
+   */
+  this.rightHandedPolygons = false;
 };
 
 
@@ -53,6 +59,14 @@ ol.format.Feature.prototype.getReadOptions = function(source, opt_options) {
 };
 
 
+/**
+ * @return {boolean}
+ */
+ol.format.Feature.prototype.getRightHandedPolygons = function() {
+  return this.rightHandedPolygons;
+};
+
+
 /**
  * Sets the `defaultDataProjection` on the options, if no `dataProjection`
  * is set.

src/ol/format/mvtformat.js

@@ -75,6 +75,8 @@ ol.format.MVT = function(opt_options) {
    */
   this.layers_ = goog.isDef(options.layers) ? options.layers : null;
 
+  this.rightHandedPolygons = true;
+
 };
 goog.inherits(ol.format.MVT, ol.format.Feature);
 

src/ol/renderer/canvas/canvasvectortilelayerrenderer.js

@@ -196,7 +196,8 @@ ol.renderer.canvas.VectorTileLayer.prototype.createReplayGroup = function(tile,
   var tileResolution = pixelSpace ? source.getTilePixelRatio() : resolution;
   replayState.dirty = false;
   var replayGroup = new ol.render.canvas.ReplayGroup(0, extent,
-      tileResolution, layer.getRenderBuffer(), source.getRightHandedPolygons());
+      tileResolution, layer.getRenderBuffer(),
+      tile.getFormat().getRightHandedPolygons());
   var squaredTolerance = ol.renderer.vector.getSquaredTolerance(
       tileResolution, pixelRatio);