116 lines
2.8 KiB
JavaScript
116 lines
2.8 KiB
JavaScript
goog.require('ol.Map');
|
|
goog.require('ol.RendererHint');
|
|
goog.require('ol.View2D');
|
|
goog.require('ol.expr');
|
|
goog.require('ol.layer.Tile');
|
|
goog.require('ol.layer.Vector');
|
|
goog.require('ol.parser.KML');
|
|
goog.require('ol.source.Stamen');
|
|
goog.require('ol.source.Vector');
|
|
goog.require('ol.style.Fill');
|
|
goog.require('ol.style.Stroke');
|
|
goog.require('ol.style.Style');
|
|
|
|
|
|
/**
|
|
* Register a function to be used in a symbolizer. Here we want the opacity
|
|
* of polygons to be based on the offset from local noon. For example, a
|
|
* timezone where it is currently noon would have an opacity of 0.75. And a
|
|
* timezone where it is currently midnight would have an opacity of 0. This
|
|
* doesn't account for daylight savings, so don't use it to plan your vacation.
|
|
*/
|
|
ol.expr.register('getOpacity', function() {
|
|
var feature = this;
|
|
var offset = 0;
|
|
var name = feature.get('name'); // e.g. GMT -08:30
|
|
var match = name.match(/([-+]\d{2}):(\d{2})$/);
|
|
if (match) {
|
|
var hours = parseInt(match[1], 10);
|
|
var minutes = parseInt(match[2], 10);
|
|
offset = 60 * hours + minutes;
|
|
}
|
|
var date = new Date();
|
|
var local = new Date(date.getTime() +
|
|
(date.getTimezoneOffset() + offset) * 60000);
|
|
// offset from local noon (in hours)
|
|
var delta = Math.abs(12 - local.getHours() + (local.getMinutes() / 60));
|
|
if (delta > 12) {
|
|
delta = 24 - delta;
|
|
}
|
|
return 0.75 * (1 - delta / 12);
|
|
});
|
|
|
|
var style = new ol.style.Style({
|
|
symbolizers: [
|
|
new ol.style.Fill({
|
|
color: '#ffff33',
|
|
opacity: ol.expr.parse('getOpacity()')
|
|
}),
|
|
new ol.style.Stroke({
|
|
color: '#ffffff'
|
|
})
|
|
]
|
|
});
|
|
|
|
var vector = new ol.layer.Vector({
|
|
source: new ol.source.Vector({
|
|
parser: new ol.parser.KML(),
|
|
url: 'data/kml/timezones.kml'
|
|
}),
|
|
style: style
|
|
});
|
|
|
|
var raster = new ol.layer.Tile({
|
|
source: new ol.source.Stamen({
|
|
layer: 'toner'
|
|
})
|
|
});
|
|
|
|
var map = new ol.Map({
|
|
layers: [raster, vector],
|
|
renderer: ol.RendererHint.CANVAS,
|
|
target: 'map',
|
|
view: new ol.View2D({
|
|
center: [0, 0],
|
|
zoom: 2
|
|
})
|
|
});
|
|
|
|
var info = $('#info');
|
|
info.tooltip({
|
|
animation: false,
|
|
trigger: 'manual'
|
|
});
|
|
|
|
var displayFeatureInfo = function(pixel) {
|
|
info.css({
|
|
left: pixel[0] + 'px',
|
|
top: (pixel[1] - 15) + 'px'
|
|
});
|
|
map.getFeatures({
|
|
pixel: pixel,
|
|
layers: [vector],
|
|
success: function(layerFeatures) {
|
|
var feature = layerFeatures[0][0];
|
|
if (feature) {
|
|
info.tooltip('hide')
|
|
.attr('data-original-title', feature.get('name'))
|
|
.tooltip('fixTitle')
|
|
.tooltip('show');
|
|
} else {
|
|
info.tooltip('hide');
|
|
}
|
|
}
|
|
});
|
|
};
|
|
|
|
$(map.getViewport()).on('mousemove', function(evt) {
|
|
var pixel = map.getEventPixel(evt.originalEvent);
|
|
displayFeatureInfo(pixel);
|
|
});
|
|
|
|
map.on('click', function(evt) {
|
|
var pixel = evt.getPixel();
|
|
displayFeatureInfo(pixel);
|
|
});
|