Problem with flashing icons

[Cecile Trace de Trail]

Hello,

I have a problem when I try to display many points, styled with icons, on my map : the icons are flashing !
It stops when I zoom in on some icons. You can see an exemple here : https://tracedetrail.com/assets/test_pi.html

When I add only a few points on the map, there is no problem. Here is the same example but with only ten points : https://tracedetrail.com/assets/test_pi_10.html

Can you help me solve this problem?

Thanks !

Cécile

[Andreas Hocevar]

Create your ol.style.Icon only once (outside the style function) or cache it. It will also improve rendering performance significantly.

Andreas.

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[Antoine Abt]

See https://openlayers.org/en/latest/examples/earthquake-custom-symbol.html
for an example with cached styles.

On 28 February 2018 at 08:19, OpenLayers Dev on behalf of Andreas

Hocevar <openlay...@googlegroups.com> wrote:
> Create your ol.style.Icon only once (outside the style function) or cache
> it. It will also improve rendering performance significantly.
>
> Andreas.
>
>
> On Wednesday, February 28, 2018, Cecile Trace de Trail via OpenLayers Dev
> <openlayers-dev+APn2wQeJUEc2VlneY...@googlegroups.com>
> wrote:
>>
>> Hello,
>>
>> I have a problem when I try to display many points, styled with icons, on
>> my map : the icons are flashing !
>> It stops when I zoom in on some icons. You can see an exemple here :
>> https://tracedetrail.com/assets/test_pi.html
>>
>> When I add only a few points on the map, there is no problem. Here is the
>> same example but with only ten points :
>> https://tracedetrail.com/assets/test_pi_10.html
>>
>> Can you help me solve this problem?
>>
>> Thanks !
>>
>> Cécile
>>
>> --
>> You received this message because you are subscribed to the Google Groups
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>> To unsubscribe from this group and stop receiving emails from it, send an

>> email to openlayers-de...@googlegroups.com.
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>> Visit this group at https://groups.google.com/group/openlayers-dev.
>> To view this discussion on the web visit
>> https://groups.google.com/d/msgid/openlayers-dev/5e98537f-cd14-4160-8520-086ef119d480%40googlegroups.com.
>> For more options, visit https://groups.google.com/d/optout.
>

> --
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>
> For more options, visit https://groups.google.com/d/optout.

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Antoine Abt

Camptocamp France SAS
http://www.camptocamp.com

[Cecile Trace de Trail]

Yes, it does the job !
https://tracedetrail.com/assets/test_pi_solved.html

Thanks Andreas.

[Cecile Trace de Trail]

Merci Antoine ! J'avais déjà testé un correctif, mais ça semble être très similaire.