Use proj4.defs instead of proj4.Proj, to conform with the proj4js API

examples/wms-custom-proj.js

@@ -8,15 +8,15 @@ goog.require('ol.proj');
 goog.require('ol.source.TileWMS');
 
 
-var proj4Proj = new proj4.Proj('EPSG:21781');
+var proj4Def = proj4.defs['EPSG:21781'];
 var projection = ol.proj.addProjection({
   code: 'EPSG:21781',
   extent: [485869.5728, 76443.1884, 837076.5648, 299941.7864],
-  units: proj4Proj.units
+  units: proj4Def.units
 });
 // The transform is needed for the ScaleLine control. Otherwise this example
 // would also work without proj4js.
-ol.proj.addCoordinateTransforms('EPSG:4326', projection, proj4(proj4Proj));
+ol.proj.addCoordinateTransforms('EPSG:4326', projection, proj4('EPSG:21781'));
 
 var extent = [420000, 30000, 900000, 350000];
 var layers = [

externs/proj4js.js

@@ -11,32 +11,8 @@ var proj4 = function() {};
 
 
 /**
- * @type {Object.<string, string>}
+ * @typedef {Object.<string, Object.<{axis: string,
+ *     units: string,
+ *     to_meter: number}>>}
  */
 proj4.defs;
-
-
-
-/**
- * @constructor
- * @param {Object|string} proj
- */
-proj4.Proj = function(proj) {};
-
-
-/**
- * @type {string}
- */
-proj4.Proj.prototype.axis;
-
-
-/**
- * @type {string}
- */
-proj4.Proj.prototype.units;
-
-
-/**
- * @type {number}
- */
-proj4.Proj.prototype.to_meter;

src/ol/proj/proj.js

@@ -485,34 +485,31 @@ ol.proj.get = function(projectionLike) {
     var projections = ol.proj.projections_;
     projection = projections[code];
     if (ol.HAVE_PROJ4JS && !goog.isDef(projection)) {
-      var proj4jsProj;
       var def = proj4.defs[code];
       if (goog.isDef(def)) {
-        proj4jsProj = new proj4.Proj(code);
+        var units = def.units;
-        var units = proj4jsProj.units;
         if (!goog.isDef(units)) {
-          if (goog.isDef(proj4jsProj.to_meter)) {
+          if (goog.isDef(def.to_meter)) {
-            units = proj4jsProj.to_meter.toString();
+            units = def.to_meter.toString();
-            ol.proj.METERS_PER_UNIT[units] = proj4jsProj.to_meter;
+            ol.proj.METERS_PER_UNIT[units] = def.to_meter;
           }
         }
         projection = new ol.proj.Projection({
           code: code,
           units: units,
-          axisOrientation: proj4jsProj.axis
+          axisOrientation: def.axis
         });
         ol.proj.addProjection(projection);
-        var currentCode, currentDef, currentProj, currentProj4jsProj;
+        var currentCode, currentDef, currentProj;
         for (currentCode in projections) {
           currentDef = proj4.defs[currentCode];
           if (goog.isDef(currentDef)) {
-            currentProj4jsProj = new proj4.Proj(currentCode);
             currentProj = ol.proj.get(currentCode);
             if (currentDef === def) {
               ol.proj.addEquivalentProjections([currentProj, projection]);
             } else {
               ol.proj.addCoordinateTransforms(currentProj, projection,
-                  proj4(currentProj4jsProj, proj4jsProj));
+                  proj4(currentCode, code));
             }
           }
         }

test/spec/ol/format/wfsformat.test.js

@@ -6,7 +6,7 @@ describe('ol.format.WFS', function() {
 
     var features, feature;
     before(function(done) {
-      proj4.defs['urn:x-ogc:def:crs:EPSG:4326'] = proj4.defs('EPSG:4326');
+      proj4.defs['urn:x-ogc:def:crs:EPSG:4326'] = proj4.defs['EPSG:4326'];
       afterLoadText('spec/ol/format/wfs/topp-states-wfs.xml', function(xml) {
         try {
           var config = {