Hi,
does the feature also disappear in Internet Explorer? If not, and if you are
not interested in support for older versions of Firefox, Safari and Opera, you
could set
OpenLayers.Renderer.SVG.prototype.MAX_PIXEL = Number.MAX_VALUE;
before creating your map.
Regards,
Andreas.
On Aug 3, 2010, at 16:28 , Christoph Lingg wrote:
> Hi list,
>
> I encountered a strange behavior I don't understand: Sometimes I want to
> cover my whole world map with a dark layer except a distinct region. This is
> meant to emphasize a certain region of the world. My approach is creating a
> polygon with the size of the earth and a hole with the region of interest.
> Looks like this:
>> var world = new OpenLayers.Geometry.LinearRing([new
>> OpenLayers.Geometry.Point(-20037508.34, -20037508.34), new
>> OpenLayers.Geometry.Point(-20037508.34, 20037508.34), new
>> OpenLayers.Geometry.Point(20037508.34, 20037508.34), new
>> OpenLayers.Geometry.Point(20037508.34, -20037508.34)]);
>> var hole = new OpenLayers.Geometry.LinearRing([new
>> OpenLayers.Geometry.Point(r.x1, r.y1), new OpenLayers.Geometry.Point(r.x1,
>> r.y2), new OpenLayers.Geometry.Point(r.x2, r.y2), new
>> OpenLayers.Geometry.Point(r.x2, r.y1)]);
>> var geo = new OpenLayers.Geometry.Polygon([world,
>> hole]);
>>
>> this.ftr = new OpenLayers.Feature.Vector(geo, null,
>> {fill: '#000000'});
>> layer.addFeatures([this.ftr]);
> Everything is black except the region, perfect! But after zooming in, the
> feature always disappears after a certain zoom level. Maybe the feature is
> too big?
>
> Do you have an explanation, a solution or a better approach for this
> requirement?
>
> Cheers,
> Christoph
> _______________________________________________
> Users mailing list
> [email protected]
> http://openlayers.org/mailman/listinfo/users
--
Andreas Hocevar
OpenGeo - http://opengeo.org/
Expert service straight from the developers.
_______________________________________________
Users mailing list
[email protected]
http://openlayers.org/mailman/listinfo/users
