106 lines
2.4 KiB
JavaScript
106 lines
2.4 KiB
JavaScript
goog.require('ol.Map');
|
|
goog.require('ol.RendererHint');
|
|
goog.require('ol.View2D');
|
|
goog.require('ol.format.GeoJSON');
|
|
goog.require('ol.layer.Tile');
|
|
goog.require('ol.layer.Vector');
|
|
goog.require('ol.proj');
|
|
goog.require('ol.source.MapQuestOpenAerial');
|
|
goog.require('ol.source.Vector');
|
|
goog.require('ol.style.Fill');
|
|
goog.require('ol.style.Stroke');
|
|
goog.require('ol.style.Style');
|
|
|
|
var map = new ol.Map({
|
|
layers: [
|
|
new ol.layer.Tile({
|
|
source: new ol.source.MapQuestOpenAerial()
|
|
})
|
|
],
|
|
renderer: ol.RendererHint.CANVAS,
|
|
target: 'map',
|
|
view: new ol.View2D({
|
|
center: [0, 0],
|
|
zoom: 2
|
|
})
|
|
});
|
|
|
|
var vectorSource = new ol.source.Vector();
|
|
var styleArray = [new ol.style.Style({
|
|
fill: new ol.style.Fill({
|
|
color: 'rgba(255, 255, 255, 0.6)'
|
|
}),
|
|
stroke: new ol.style.Stroke({
|
|
color: '#319FD3',
|
|
width: 1
|
|
})
|
|
})];
|
|
|
|
var vectorLayer;
|
|
$.getJSON('data/countries.geojson', function(data) {
|
|
var format = new ol.format.GeoJSON();
|
|
var transformFn = ol.proj.getTransform('EPSG:4326', 'EPSG:3857');
|
|
format.readObject(data, function(feature) {
|
|
var geometry = feature.getGeometry();
|
|
geometry.transform(transformFn);
|
|
feature.setGeometry(geometry);
|
|
vectorSource.addFeature(feature);
|
|
});
|
|
vectorLayer = new ol.layer.Vector({
|
|
source: vectorSource,
|
|
styleFunction: function(feature, resolution) {
|
|
return styleArray;
|
|
}
|
|
});
|
|
map.getLayers().push(vectorLayer);
|
|
});
|
|
|
|
var highlight;
|
|
var displayFeatureInfo = function(pixel) {
|
|
var oldHighlight = highlight;
|
|
|
|
var feature = map.forEachFeatureAtPixel(pixel, function(feature, layer) {
|
|
return feature;
|
|
});
|
|
|
|
var info = document.getElementById('info');
|
|
if (feature) {
|
|
info.innerHTML = feature.getId() + ': ' + feature.get('name');
|
|
} else {
|
|
info.innerHTML = ' ';
|
|
}
|
|
|
|
highlight = feature;
|
|
|
|
if (highlight !== oldHighlight) {
|
|
map.requestRenderFrame();
|
|
}
|
|
};
|
|
|
|
$(map.getViewport()).on('mousemove', function(evt) {
|
|
var pixel = map.getEventPixel(evt.originalEvent);
|
|
displayFeatureInfo(pixel);
|
|
});
|
|
|
|
map.on('singleclick', function(evt) {
|
|
var pixel = evt.getPixel();
|
|
displayFeatureInfo(pixel);
|
|
});
|
|
|
|
var highlightStyle = new ol.style.Style({
|
|
stroke: new ol.style.Stroke({
|
|
color: '#f00',
|
|
width: 1
|
|
}),
|
|
fill: new ol.style.Fill({
|
|
color: 'rgba(255,0,0,0.1)'
|
|
})
|
|
});
|
|
|
|
map.on('postcompose', function(evt) {
|
|
if (highlight) {
|
|
var render = evt.getRender();
|
|
render.drawFeature(highlight, highlightStyle);
|
|
}
|
|
});
|