You found a bug. See https://github.com/openlayers/ol3/pull/5511 for a fix.

Andreas.

On Wed, Jun 22, 2016 at 1:13 PM, Marcos Oto Picarelli Prado via OL3 Dev <
ol3-dev+apn2wqc3slt7x3hea31pirytouijxpylg7bbbi21fk2hxcjethygw...@googlegroups.com
> wrote:

>
> <http://stackoverflow.com/questions/37954041/openlayers-3-multilinestring-zoom-in-out-flashing-layer#>
>
> I'm trying to plot two linestring (WKT) on openlayers 3.
>
> When zoom (in or out) the layers are flashing and some times show or hide.
>
> Do some one know what is going on?
>
> Thanks
>
> The code is:
>
>
> var rasterLayer = new ol.layer.Tile({ source: new ol.source.MapQuest({ layer: 
> "osm" }) });
> var vectorSource = new ol.source.Vector({});
> var vectorLayer = new ol.layer.Vector({ source: vectorSource });
> var wktFormat = new ol.format.WKT();
> var layers = [rasterLayer, vectorLayer];
>
> var olMap = new ol.Map({
>         layers: layers,
>         target: "map",
>         view: new ol.View({ center: ol.proj.transform([-47.4556640445469, 
> -23.5087675969813], "EPSG:4326", "EPSG:3857"), zoom: 15 })
>     });
>
> var wkt = "MULTILINESTRING ((-47.4556640445469 -23.5087675969813, 
> -47.455663222553 -23.508781331245),(-47.4597839082327 -23.5090240050454, 
> -47.4597690420473 -23.5090246913242))";
> var feature = wktFormat.readFeature(wkt);
> feature.getGeometry().transform("EPSG:4326", "EPSG:3857");
> feature.setStyle(new ol.style.Style({ stroke: new ol.style.Stroke({ color: 
> "red", width: 9 }) }));
> vectorSource.addFeature(feature);
>
>
> jsfiddle <http://jsfiddle.net/Lz1t8jpn/4/>
>
>
> Thanks
> <http://jsfiddle.net/Lz1t8jpn/4/>
>
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-- 
Andreas Hocevar
Geospatial Solutions Engineer | Boundless
ahoce...@boundlessgeo.com
@boundlessgeo

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