Accept feature projection in GeoJSON constructor

src/ol/format/feature.js

@@ -1,6 +1,7 @@
 goog.provide('ol.format.Feature');
 
 goog.require('ol.geom.Geometry');
+goog.require('ol.obj');
 goog.require('ol.proj');
 
 
@@ -24,6 +25,12 @@ ol.format.Feature = function() {
    */
   this.defaultDataProjection = null;
 
+  /**
+   * @protected
+   * @type {ol.proj.Projection}
+   */
+  this.defaultFeatureProjection = null;
+
 };
 
 
@@ -64,19 +71,10 @@ ol.format.Feature.prototype.getReadOptions = function(source, opt_options) {
  *     Updated options.
  */
 ol.format.Feature.prototype.adaptOptions = function(options) {
-  var updatedOptions;
-  if (options) {
-    updatedOptions = {
-      featureProjection: options.featureProjection,
-      dataProjection: options.dataProjection ?
-          options.dataProjection : this.defaultDataProjection,
-      rightHanded: options.rightHanded
-    };
-    if (options.decimals) {
-      updatedOptions.decimals = options.decimals;
-    }
-  }
-  return updatedOptions;
+  return ol.obj.assign({
+    dataProjection: this.defaultDataProjection,
+    featureProjection: this.defaultFeatureProjection
+  }, options);
 };
 
 

src/ol/format/geojson.js

@@ -42,6 +42,10 @@ ol.format.GeoJSON = function(opt_options) {
           options.defaultDataProjection : 'EPSG:4326');
 
 
+  if (options.featureProjection) {
+    this.defaultFeatureProjection = ol.proj.get(options.featureProjection);
+  }
+
   /**
    * Name of the geometry attribute for features.
    * @type {string|undefined}