And follow-up part II. I was wrong about the ie being effected, I had some funky issue with something on my end. The patch listed in 713 is incorporated into the version of OL that I'm using (2.5) and I still experience the disappearing line phenomenon. I'll have to look into the code in SVG.js I suppose.
cmose wrote: > > Thanks, I'll check out the patch and give that a try. I need to rework my > example as I am experiencing the same problem in IE on my production app > but the example I knocked up isn't showing that (in fact it looks like it > errors out in ie). > > > Pierre GIRAUD wrote: >> >> Ok, I just remembered this was an already discussed issue. >> http://trac.openlayers.org/ticket/719 >> http://trac.openlayers.org/ticket/713 >> >> Regards, >> Pierre >> >> On Jan 19, 2008 12:13 PM, Pierre GIRAUD <[EMAIL PROTECTED]> wrote: >>> For your information, your code is correct and I think I've found what >>> part of the OpenLayers' code is involved in this weird behavior. >>> I'll try to find out a fix or at least a workaround for this issue. If >>> your interested in fixing this too, you can have a look at the SVG >>> renderer (lib/OpenLayers/Renderer/SVG.js) and in particular at >>> getShortString(), inValidRange() and MAX_PIXEL. >>> >>> I plan to fill a bug report, but don't hesitate to do so if your >>> quicker. >>> >>> Hum, I was unable to reproduce the issue under IE with your example. >>> >>> Regards, >>> Pierre >>> >>> >>> >>> On Jan 18, 2008 5:23 PM, cmose <[EMAIL PROTECTED]> wrote: >>> > >>> > I have several lineStrings on a vector layer that originate from the >>> same >>> > lat/lon coordinate. As you zoom in on the map, the lineStrings >>> randomly >>> > disappear, e.g,. if you start out with 6 lines originating from the >>> same >>> > point, as you zoom in on the map lines will randomly disappear until >>> there >>> > are <6 lines left. >>> > >>> > I've verified this behavior using a modified version of >>> vector-features.html >>> > from the examples directory. I don't have anywhere to host my example >>> but >>> > here is my modified script declaration from vector-features.html: >>> > >>> > <script src="../lib/OpenLayers.js" >>> type="text/javascript"></script> >>> > <script type="text/javascript"> >>> > var map; >>> > >>> > function init(){ >>> > map = new OpenLayers.Map('map'); >>> > var layer = new OpenLayers.Layer.WMS( "OpenLayers WMS", >>> > "http://labs.metacarta.com/wms/vmap0";, {layers: >>> 'basic'} >>> > ); >>> > map.addLayer(layer); >>> > >>> > /* >>> > * Layer style >>> > */ >>> > // we want opaque external graphics and non-opaque >>> internal >>> > graphics >>> > var layer_style = OpenLayers.Util.extend({}, >>> > OpenLayers.Feature.Vector.style['default']); >>> > layer_style.fillOpacity = 0.2; >>> > layer_style.graphicOpacity = 1; >>> > >>> > /* >>> > * Blue style >>> > */ >>> > var style_blue = OpenLayers.Util.extend({}, layer_style); >>> > style_blue.strokeColor = "blue"; >>> > style_blue.fillColor = "blue"; >>> > >>> > /* >>> > * Green style >>> > */ >>> > var style_green = { >>> > strokeColor: "#00FF00", >>> > strokeWidth: 2, >>> > pointRadius: 4, >>> > pointerEvents: "visiblePainted" >>> > }; >>> > >>> > /* >>> > * Mark style >>> > */ >>> > var style_mark = OpenLayers.Util.extend({}, >>> > OpenLayers.Feature.Vector.style['default']); >>> > // each of the three lines below means the same, if only >>> one of >>> > // them is active: the image will have a size of 24px, and >>> the >>> > // aspect ratio will be kept >>> > // style_mark.pointRadius = 12; >>> > // style_mark.graphicHeight = 24; >>> > // style_mark.graphicWidth = 24; >>> > >>> > // if graphicWidth and graphicHeight are both set, the >>> aspect >>> > ratio >>> > // of the image will be ignored >>> > style_mark.graphicWidth = 24; >>> > style_mark.graphicHeight = 20; >>> > style_mark.graphicXOffset = -(style_mark.graphicWidth/2); >>> // >>> > this is the default value >>> > style_mark.graphicYOffset = -style_mark.graphicHeight; >>> > style_mark.externalGraphic = "../img/marker.png"; >>> > >>> > var vectorLayer = new OpenLayers.Layer.Vector("Simple >>> Geometry", >>> > {style: layer_style}); >>> > var point = OpenLayers.Geometry.Point; >>> > var ls = OpenLayers.Geometry.LineString; >>> > var vector = OpenLayers.Feature.Vector; >>> > var lines = []; >>> > var features = []; >>> > >>> > lines.push(new ls([new point(1,50), new >>> point(75,60)])); >>> > lines.push(new ls([new point(1,50), new >>> point(-60,-30)])); >>> > lines.push(new ls([new point(1,50), new >>> point(40,89)])); >>> > lines.push(new ls([new point(1,50), new >>> point(-150,-55)])); >>> > lines.push(new ls([new point(1,50), new >>> point(-30,-25)])); >>> > lines.push(new ls([new point(1,50), new >>> point(-5,-10)])); >>> > >>> > for(var i=0;i<lines.length;i++){ >>> > features.push(new vector(lines[i], null, >>> style_green)); >>> > } >>> > >>> > map.addLayer(vectorLayer); >>> > map.setCenter(new OpenLayers.LonLat(1,50), 5); >>> > vectorLayer.addFeatures(features); >>> > } >>> > </script> >>> > >>> > The map is initialized with a zoom level of 5. Once you get to 8 one >>> of the >>> > 6 lines disappears, leaving you with 5. Zoom level 9 removes all but >>> one >>> > line. Zoom level 10 removes all lines. >>> > >>> > I haven't traced the issue beyond drawFeature() in Vector.js. I've >>> tested >>> > the example in Firefox thus far but in my app I'm getting the same >>> behavior >>> > in ff and ie. >>> > >>> > Any ideas? >>> > -- >>> > View this message in context: >>> http://www.nabble.com/Multiple-linestrings-originating-from-the-same-point-disappear-when-zooming-tp14952551p14952551.html >>> > Sent from the OpenLayers Users mailing list archive at Nabble.com. >>> > >>> > _______________________________________________ >>> > Users mailing list >>> > [email protected] >>> > http://openlayers.org/mailman/listinfo/users >>> > >>> >> _______________________________________________ >> Users mailing list >> [email protected] >> http://openlayers.org/mailman/listinfo/users >> >> > > -- View this message in context: http://www.nabble.com/Multiple-linestrings-originating-from-the-same-point-disappear-when-zooming-tp14952551p15050415.html Sent from the OpenLayers Users mailing list archive at Nabble.com. _______________________________________________ Users mailing list [email protected] http://openlayers.org/mailman/listinfo/users
