这是一个简单的问题,但我陷在代码中,无法找到解决方案;希望有人能帮忙!
我在地图上有三个标记,并希望每个标记都有不同的图标。
我无法弄清楚在哪里进行此操作 - 我需要重新绘制吗?
我看到了这个问题OpenLayers problem with marker icons ,但是不知道如何实现解决方案。
我的代码:
function init() {
map = new OpenLayers.Map("basicMap");
var mapnik = new OpenLayers.Layer.Stamen("toner-background");
var fromProjection = new OpenLayers.Projection("EPSG:4326"); // Transform from WGS 1984
var toProjection = new OpenLayers.Projection("EPSG:900913"); // to Spherical Mercator Projection
var position = new OpenLayers.LonLat(30,55.515).transform( fromProjection, toProjection);
var zoom = 4;
map.addLayer(mapnik);
map.setCenter(position, zoom );
var markers = new OpenLayers.Layer.Markers( "Markers" );
map.addLayer(markers);
var icon1 = new OpenLayers.Icon('http://www.openlayers.org/dev/img/marker.png', size, offset);
var icon2 = new OpenLayers.Icon('http://www.openlayers.org/dev/img/marker-gold.png', size, offset);
var icon3 = new OpenLayers.Icon('http://www.openlayers.org/dev/img/marker-green.png', size, offset);
var lonLat1 = new OpenLayers.LonLat(0.1062,51.5171).transform(
new OpenLayers.Projection("EPSG:4326"), // transform from WGS 1984
map.getProjectionObject() // to Spherical Mercator Projection
);
var lonLat2 = new OpenLayers.LonLat(2.3470,48.8742).transform(
new OpenLayers.Projection("EPSG:4326"), // transform from WGS 1984
map.getProjectionObject() // to Spherical Mercator Projection
);
var lonLat3 = new OpenLayers.LonLat(7.2692,43.7028).transform(
new OpenLayers.Projection("EPSG:4326"), // transform from WGS 1984
map.getProjectionObject() // to Spherical Mercator Projection
);
var marker1 = new OpenLayers.Marker(lonLat1);
var size = new OpenLayers.Size(21,25);
var offset = new OpenLayers.Pixel(-(size.w/2), -size.h);
marker1.icon.size = size;
marker1.icon.offset = offset;
var feature = new OpenLayers.Feature(markers, lonLat1);
feature.closeBox = true;
feature.popupClass = OpenLayers.Class(OpenLayers.Popup.AnchoredBubble, { autoSize: true });
feature.data.popupContentHTML = '<p>Marker1<p>';
feature.data.overflow = "hidden";
marker1.feature = feature;
var markerClick = function (evt) {
if (this.popup == null) {
this.popup = this.createPopup(this.closeBox);
map.addPopup(this.popup);
this.popup.show();
} else {
this.popup.toggle();
}
OpenLayers.Event.stop(evt);
};
marker1.events.register("mousedown", feature, markerClick);
var marker2 = new OpenLayers.Marker(lonLat2);
var size = new OpenLayers.Size(21,25);
var offset = new OpenLayers.Pixel(-(size.w/2), -size.h);
var feature = new OpenLayers.Feature(markers, lonLat2);
feature.closeBox = true;
feature.popupClass = OpenLayers.Class(OpenLayers.Popup.AnchoredBubble, { autoSize: true });
feature.data.popupContentHTML = '<p>Marker2<p>';
feature.data.overflow = "hidden";
marker2.feature = feature;
var markerClick = function (evt) {
if (this.popup == null) {
this.popup = this.createPopup(this.closeBox);
map.addPopup(this.popup);
this.popup.show();
} else {
this.popup.toggle();
}
OpenLayers.Event.stop(evt);
};
marker2.events.register("mousedown", feature, markerClick);
var marker3 = new OpenLayers.Marker(lonLat3);
var size = new OpenLayers.Size(21,25);
var offset = new OpenLayers.Pixel(-(size.w/2), -size.h);
marker3.icon.size = size;
marker3.icon.offset = offset;
var feature = new OpenLayers.Feature(markers, lonLat3);
feature.closeBox = true;
feature.popupClass = OpenLayers.Class(OpenLayers.Popup.AnchoredBubble, { autoSize: true });
feature.data.popupContentHTML = '<p>Marker 3<p>';
feature.data.overflow = "hidden";
marker3.feature = feature;
var markerClick = function (evt) {
if (this.popup == null) {
this.popup = this.createPopup(this.closeBox);
map.addPopup(this.popup);
this.popup.show();
} else {
this.popup.toggle();
}
OpenLayers.Event.stop(evt);
};
marker3.events.register("mousedown", feature, markerClick);
markers.addMarker(marker1, icon1);
markers.addMarker(marker2, icon2);
markers.addMarker(marker3, icon3);
}
谢谢!