Yeah, this issue has probably to do with the geometry clipping that is done for geometries that span over a long coordinate range, to avoid running out of coordinate space. A workaround would be to split your geometries into smaller ones, or use the Canvas renderer as Eric suggested.
Andreas. On Sat, May 19, 2012 at 4:03 PM, RICHARD Didier <[email protected]> wrote: > >> On Sat, May 19, 2012 at 1:08 PM, RICHARD Didier <[email protected]> >> wrote: >>> Hi devs, >>> >>> Based on the kml-layer.html with the following code : >>> >>> var map = new OpenLayers.Map({ >>> div: "map", >>> layers: [ >>> new OpenLayers.Layer.WMS( >>> "WMS", "http://vmap0.tiles.osgeo.org/wms/vmap0";, >>> {layers: "basic"} >>> ), >>> new OpenLayers.Layer.Vector("KML", { >>> strategies: [new OpenLayers.Strategy.Fixed()], >>> protocol: new OpenLayers.Protocol.HTTP({ >>> url: "polygon.kml",/****** the polygon ******/ >>> format: new OpenLayers.Format.KML({ >>> extractStyles: true, >>> extractAttributes: true, >>> maxDepth: 2 >>> }) >>> }) >>> }) >>> ], >>> numZoomLevels:19,/****** 19 levels to see the bug ******/ >>> center: new OpenLayers.LonLat(4.3560894576721, >>> 45.084481104508),/****** new center ******/ >>> zoom: 17 >>> }); >>> >>> >>> At this zoom, the symbology is correct : polygon's inside is filled and >>> the outside is left blank. >>> When you zoom to level 18, the polygon's inside is not filled anymore >>> and >>> the outside is filled. >>> >>> Tested with OpenLayers 2.11, OpenLayers 2.12-rc4. >>> >>> The polygon is attached. >>> >>> I have browse the tickets on trac, but found nothing relevant. >>> Previously, >>> there was a hole in the polygon, but it has been removed. >> >> Nasty. Do you know an OpenLayers version with which your example >> works? Your example works correctly with the Canvas renderer >> (renderers: ['Canvas'] in the layer config), so this is probably a bug >> in the SVG renderer. >> > > 2.10, 2.9.1, 2.8, 2.7 : broken > 2.6 : when zooming in, the KML is not drawn ... > 2.5 : the browser's support for rendering is broken (despite : > renderes:['SVG'] added in the code) > > (tested under FF 12 / Linux) > > So, I guess it is an old issue with vector rendering ?! > > didier > >> >> >> -- >> Eric Lemoine >> >> Camptocamp France SAS >> Savoie Technolac, BP 352 >> 73377 Le Bourget du Lac, Cedex >> >> Tel : 00 33 4 79 44 44 96 >> Mail : [email protected] >> http://www.camptocamp.com >> > > > -- > RICHARD Didier - Chef du pôle technique du Géoportail > 2/4, avenue Pasteur - 94165 Saint Mandé Cedex > Tél : +33 (0) 1 43 98 83 23 > _______________________________________________ > Dev mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/openlayers-dev -- Andreas Hocevar OpenGeo - http://opengeo.org/ Expert service straight from the developers. _______________________________________________ Dev mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/openlayers-dev
