[OpenLayers-Dev] Bug in rendering features with cluster strategy

Ivan Grcic ivan.grcic at geofoto.hr
Mon Nov 3 02:55:11 EST 2008

I filled this in http://trac.openlayers.org/ticket/1806,


On Sun, Nov 2, 2008 at 9:36 PM, Ivan Grcic <ivan.grcic at geofoto.hr> wrote:
> Was trying to reproduce this on normal gml/wfs layer, but obviously
> theres not such problem
> because we are always dealing with fixed number of features. So, when
> one zooms in while
>  feature is selected that feature is also rendered on next zoom,
> because it exist on all zoom levels....
> In cluster strategy number of feature changes when we zoom...so the
> feature that is currently selected
>  doesnt exist on next zoom anymore...thus it shouldnt be rendered next
> time... any hints how to solve this quickly?
> regards,
> Ivan
> On Sun, Nov 2, 2008 at 9:20 PM, Ivan Grcic <ivan.grcic at geofoto.hr> wrote:
>> Hi list,
>> i discovered a bug while developing my OL application, in cluster
>> strategy class.
>> Bug occurs when you hover over one feature that represent a cluster
>> (or externalGraphic or like in cluster example - vector circle
>> http://openlayers.org/dev/examples/strategy-cluster.html)
>> When you zoom in/out while that feature-cluster is selected (by
>> quickly double-clicking or easier using scroll on ur mouse), on next
>> zoom that cluster is rendered (stays on screen) together with newly
>> created clusters! And clearly it shouldnt be there. The old
>> ("phantom") cluster is not selectable, as he doesnt exist on the new
>> zoom level..he just stays there on screen...annoying me :)
>> As you zoom in again and again, phantom clusters always render, always
>> at the same position in the map div...
>> Please confirm that this is a bug, im going crazy here with this one :|
>> --
>> Ivan Grcic

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