[OpenLayers-Users] HELP! OL 2.13: Google v3 and other layers not zooming "together"

[Jeff Heard]

Andreas, thanks for that, will do.  That doesn't fix the other issue,
though, which is that zooming in and out causes the layers to "drift"
physically.  An object that is on the west side of the street at one zoom
level will overlap the street at the next zoom level in or out, and so
forth.  The rendering only appears to be accurate at the initial zoom
level.  I haven't tested this extensively for WMS layers, but the problem
is consistent with vector layers.

This is a recent change - I've been using OpenLayers for three years now,
and I saw this problem back in 2.11 for a time and the fix was to add a
maxExtent to the map.  That fix no longer works now, and I'm at a loss as
to what to fix.


On Tue, Jun 18, 2013 at 5:25 AM, Andreas Hocevar <ahocevar at opengeo.org>wrote:

> Google Maps is integrated using the GMaps API, and there we cannot control
> zoom animation. Your best bet is to turn off zoom animation for the map by
> configuring your map with
>
>     zoomMethod: null
>
> Then you can also activate the OpenLayers hack to remove the GMaps
> animation by turning the layer off during zooming. To do so, configure your
> Google layer with
>
>     animationEnabled: false
>
> Andreas.
>
>
> On Mon, Jun 17, 2013 at 6:54 PM, Jeff Heard <jefferson.r.heard at gmail.com>wrote:
>
>> I'm stuck. My code works with OSM, but I need it to work with Google as
>> well.  The problem is simply that Google v3 and my other layers are not
>> playing well together at all.  They don't zoom together.
>>
>> In the case of Google satellite, the layer doesn't zoom at all unless I
>> pan the map.  In the case of the others (hybrid, terrain, roads), they
>> zoom, but the google layer and the other layers on the map zoom up to half
>> a second apart from each other, and the layer "drifts" between zoom levels
>> somewhat.
>>
>> The code that reproduces this is simple and derived directly from the WMS
>> and Google v3 examples, but they appear not to work together well:
>>
>> $(function() { var in_options = { internalProjection: new
>> OpenLayers.Projection('EPSG:900913'), externalProjection: new
>> OpenLayers.Projection("EPSG:4326") };
>> var wkt = new OpenLayers.Format.WKT(in_options); var feature =
>> wkt.read("POLYGON ((-78.9950752916525687 35.5198238058974169,
>> -78.9950752916525687 36.0750238562958074, -78.2565296570171398
>> 36.0750238562958074, -78.2565296570171398 35.5198238058974169,
>> -78.9950752916525687 35.5198238058974169))"); var bounds =
>> feature.geometry.getBounds();
>> var wms = new OpenLayers.Layer.WMS('Zoning', "/ga_resources/wms/", {
>>  styles: "styles/new-style",  layers:
>> "catalog/states/nc/counties/wake/zoning", transparent: true });
>> var map = new OpenLayers.Map({ div:'map', projection: new
>> OpenLayers.Projection("EPSG:900913")});
>> var layers = [ new OpenLayers.Layer.Google( "Google Physical", {type:
>> google.maps.MapTypeId.TERRAIN} ), new OpenLayers.Layer.Google( "Google
>> Streets", // the default {numZoomLevels: 20} ), new
>> OpenLayers.Layer.Google( "Google Hybrid", {type:
>> google.maps.MapTypeId.HYBRID, numZoomLevels: 20} ), new
>> OpenLayers.Layer.Google( "Google Satellite", {type:
>> google.maps.MapTypeId.SATELLITE, numZoomLevels: 22} ), wms ];
>> map.addLayers(layers);  //map.addLayers([wms]); map.addControl(new
>> OpenLayers.Control.LayerSwitcher());  map.zoomToExtent(bounds);
>> });
>>
>> _______________________________________________
>> Users mailing list
>> Users at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/openlayers-users
>>
>>
>
>
> --
> Andreas Hocevar
> OpenGeo - http://opengeo.org/
> Expert service straight from the developers.
>
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