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

Ivan Grcic ivan.grcic at geofoto.hr
Mon Nov 3 04:03:06 EST 2008

OK... i found it..inside Layer.Vector...now the question is: should i
put something like this:

if (OpenLayers.Util.indexOf(this.features, feature) != -1){

inside drawFeature: function(feature, style) {

or inside every other function inside Layer.Vector that uses
drawFeature function?

When I put it here:

    drawFeature: function(feature, style) {
-->	if (OpenLayers.Util.indexOf(this.features, feature) != -1){

it works pretty fine for me :) Eric?

On Mon, Nov 3, 2008 at 9:53 AM, Ivan Grcic <ivan.grcic at geofoto.hr> wrote:
> Yup, its not Cluster Strategy...
> http://trac.openlayers.org/ticket/1806#comment:2
> On Mon, Nov 3, 2008 at 9:11 AM, Eric Lemoine <eric.c2c at gmail.com> wrote:
>> Hi.
>> Yes, this looks like a bug in OpenLayers.
>> I'm under the impression that this isn't a bug in the cluster strategy
>> but either in Layer.Vector or in Control.SelectFeature. Indeed, I
>> think SelectFeature calls layer.drawFeature on feature
>> selection/unselection without checking whether the feature is in the
>> layer. And i'm saying this may be a bug in Layer.Vector because it may
>> be that drawFeature should be responsible for checking whether the
>> feature is in the layer before actually drawing it.
>> This is just coming from the top of my head so i may be wrong, but i'm
>> feeling this is a good track to follow :)
>> Eric
>> 2008/11/2, Ivan Grcic <ivan.grcic at geofoto.hr>:
>>> 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
>>> _______________________________________________
>>> Dev mailing list
>>> Dev at openlayers.org
>>> http://openlayers.org/mailman/listinfo/dev
> --
> Ivan Grcic

Ivan Grcic

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