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Add support for reprojection of vector formats when loading data. This allows

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for the definition of a 'projection' option on a layer. IF this projection 
object exists, it will be used to create the format's internal/external 
projection options, making it such that any data loaded will be reprojected 
to the map's projection automatically. r=pagameba (Closes #1273, #1225, #1269) 


git-svn-id: http://svn.openlayers.org/trunk/openlayers@5828 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
crschmidt
2008-01-20 20:33:54 +00:00
parent 7a19fd6a95
commit f28a1c314a
7 changed files with 159 additions and 21 deletions
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50
lib/OpenLayers/Layer/GeoRSS.js
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@@ -29,6 +29,13 @@ OpenLayers.Layer.GeoRSS = OpenLayers.Class(OpenLayers.Layer.Markers, {
* Array({<OpenLayers.Feature>})
*/
features: null,
/**
* APIProperty: formatOptions
* {Object} Hash of options which should be passed to the format when it is
* created. Must be passed in the constructor.
*/
formatOptions: null,
/**
* Property: selectedFeature
@@ -69,8 +76,6 @@ OpenLayers.Layer.GeoRSS = OpenLayers.Class(OpenLayers.Layer.Markers, {
OpenLayers.Layer.Markers.prototype.initialize.apply(this, [name, options]);
this.location = location;
this.features = [];
this.events.triggerEvent("loadstart");
OpenLayers.loadURL(location, null, this, this.parseData);
},
/**
@@ -86,6 +91,36 @@ OpenLayers.Layer.GeoRSS = OpenLayers.Class(OpenLayers.Layer.Markers, {
this.clearFeatures();
this.features = null;
},
/**
* Method: loadRSS
* Start the load of the RSS data. Don't do this when we first add the layer,
* since we may not be visible at any point, and it would therefore be a waste.
*/
loadRSS: function() {
if (!this.loaded) {
this.events.triggerEvent("loadstart");
OpenLayers.loadURL(this.location, null, this, this.parseData);
this.loaded = true;
}
},
/**
* Method: moveTo
* If layer is visible and RSS has not been loaded, load RSS.
*
* Parameters:
* bounds - {Object}
* zoomChanged - {Object}
* minor - {Object}
*/
moveTo:function(bounds, zoomChanged, minor) {
OpenLayers.Layer.Markers.prototype.moveTo.apply(this, arguments);
if(this.visibility && !this.loaded){
this.events.triggerEvent("loadstart");
this.loadRSS();
}
},
/**
* Method: parseData
@@ -113,7 +148,16 @@ OpenLayers.Layer.GeoRSS = OpenLayers.Class(OpenLayers.Layer.Markers, {
}
}
var format = new OpenLayers.Format.GeoRSS();
var options = {};
OpenLayers.Util.extend(options, this.formatOptions);
if (this.map && !this.projection.equals(this.map.getProjectionObject())) {
options.externalProjection = this.projection;
options.internalProjection = this.map.getProjectionObject();
}
var format = new OpenLayers.Format.GeoRSS(options);
var features = format.read(doc);
for (var i = 0; i < features.length; i++) {