zoomFactor defaults to 2

examples/wms-custom-proj.js

@@ -19,19 +19,6 @@ var epsg21781 = new ol.Projection('EPSG:21781', ol.ProjectionUnits.METERS,
     new ol.Extent(485869.5728, 76443.1884, 837076.5648, 299941.7864));
 ol.projection.addProjection(epsg21781);
 
-// We could give the single image source a set of resolutions. This prevents the
-// source from requesting images of arbitrary resolutions. To try it, uncomment
-// the block below and the resolutions option in the SingleImageWMS config.
-/*
-var projectionExtent = epsg21781.getExtent();
-var maxResolution = Math.max(projectionExtent.getWidth(),
-    projectionExtent.getHeight()) / 256;
-var resolutions = new Array(10);
-for (var i = 0; i < 10; ++i) {
-  resolutions[i] = maxResolution / Math.pow(2.0, i);
-}
-*/
-
 var extent = new ol.Extent(420000, 30000, 900000, 350000);
 var layers = new ol.Collection([
   new ol.layer.TileLayer({
@@ -50,7 +37,6 @@ var layers = new ol.Collection([
   }),
   new ol.layer.ImageLayer({
     source: new ol.source.SingleImageWMS({
-      //resolutions: resolutions,
       url: 'http://wms.geo.admin.ch/',
       attributions: [new ol.Attribution(
           '&copy; ' +

src/ol/map.js

@@ -941,7 +941,7 @@ ol.Map.createControls_ = function(mapOptions) {
       mapOptions.zoomControl : true;
   if (zoomControl) {
     var zoomDelta = goog.isDef(mapOptions.zoomDelta) ?
-        mapOptions.zoomDelta : 4;
+        mapOptions.zoomDelta : 1;
     controls.push(new ol.control.Zoom({
       delta: zoomDelta
     }));
@@ -971,7 +971,7 @@ ol.Map.createInteractions_ = function(mapOptions) {
       mapOptions.doubleClickZoom : true;
   if (doubleClickZoom) {
     var zoomDelta = goog.isDef(mapOptions.zoomDelta) ?
-        mapOptions.zoomDelta : 4;
+        mapOptions.zoomDelta : 1;
     interactions.push(new ol.interaction.DblClickZoom(zoomDelta));
   }
 

src/ol/view2d.js

@@ -359,10 +359,8 @@ ol.View2D.createConstraints_ = function(view2DOptions) {
       maxResolution = Math.max(
           projectionExtent.maxX - projectionExtent.minX,
           projectionExtent.maxY - projectionExtent.minY) / ol.DEFAULT_TILE_SIZE;
-      // number of steps we want between two data resolutions
-      var numSteps = 4;
-      numZoomLevels = 29 * numSteps;
-      zoomFactor = Math.exp(Math.log(2) / numSteps);
+      numZoomLevels = 29;
+      zoomFactor = 2;
     }
     resolutionConstraint = ol.ResolutionConstraint.createSnapToPower(
         zoomFactor, maxResolution, numZoomLevels - 1);

test/spec/ol/map.test.js

@@ -121,7 +121,7 @@ describe('ol.Map', function() {
           var interactions = ol.Map.createInteractions_(options);
           expect(interactions.getLength()).toEqual(1);
           expect(interactions.getAt(0)).toBeA(ol.interaction.DblClickZoom);
-          expect(interactions.getAt(0).delta_).toEqual(4);
+          expect(interactions.getAt(0).delta_).toEqual(1);
         });
       });