140 lines
3.5 KiB
JavaScript
140 lines
3.5 KiB
JavaScript
goog.require('ol.Attribution');
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goog.require('ol.Map');
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goog.require('ol.View2D');
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goog.require('ol.geom.LineString');
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goog.require('ol.geom.Point');
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goog.require('ol.layer.Tile');
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goog.require('ol.layer.Vector');
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goog.require('ol.source.IGC');
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goog.require('ol.source.OSM');
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goog.require('ol.style.Circle');
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goog.require('ol.style.Stroke');
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goog.require('ol.style.Style');
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var colors = {
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'Clement Latour': 'rgba(0, 0, 255, 0.7)',
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'Damien de Baesnt': 'rgba(0, 215, 255, 0.7)',
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'Sylvain Dhonneur': 'rgba(0, 165, 255, 0.7)',
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'Tom Payne': 'rgba(0, 255, 255, 0.7)',
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'Ulrich Prinz': 'rgba(0, 215, 255, 0.7)'
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};
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var styleCache = {};
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var styleFunction = function(feature, resolution) {
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var color = colors[feature.get('PLT')];
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var styleArray = styleCache[color];
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if (!styleArray) {
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styleArray = [new ol.style.Style({
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stroke: new ol.style.Stroke({
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color: color,
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width: 3
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})
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})];
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styleCache[color] = styleArray;
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}
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return styleArray;
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};
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var vectorSource = new ol.source.IGC({
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projection: 'EPSG:3857',
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urls: [
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'data/igc/Clement-Latour.igc',
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'data/igc/Damien-de-Baenst.igc',
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'data/igc/Sylvain-Dhonneur.igc',
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'data/igc/Tom-Payne.igc',
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'data/igc/Ulrich-Prinz.igc'
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]
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});
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var map = new ol.Map({
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layers: [
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new ol.layer.Tile({
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source: new ol.source.OSM({
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attributions: [
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new ol.Attribution({
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html: 'All maps © ' +
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'<a href="http://www.opencyclemap.org/">OpenCycleMap</a>'
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}),
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ol.source.OSM.DATA_ATTRIBUTION
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],
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url: 'http://{a-c}.tile.opencyclemap.org/cycle/{z}/{x}/{y}.png'
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})
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}),
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new ol.layer.Vector({
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source: vectorSource,
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styleFunction: styleFunction
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})
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],
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renderer: 'canvas',
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target: 'map',
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view: new ol.View2D({
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center: [703365.7089403362, 5714629.865071137],
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zoom: 9
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})
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});
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var point = null;
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var line = null;
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var displaySnap = function(coordinate) {
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var closestFeature = vectorSource.getClosestFeatureToCoordinate(coordinate);
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var info = document.getElementById('info');
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if (closestFeature === null) {
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point = null;
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line = null;
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info.innerHTML = ' ';
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} else {
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var geometry = closestFeature.getGeometry();
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var closestPoint = geometry.getClosestPoint(coordinate);
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if (point === null) {
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point = new ol.geom.Point(closestPoint);
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} else {
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point.setCoordinates(closestPoint);
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}
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var date = new Date(closestPoint[2] * 1000);
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info.innerHTML =
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closestFeature.get('PLT') + ' (' + date.toUTCString() + ')';
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var coordinates = [coordinate, [closestPoint[0], closestPoint[1]]];
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if (line === null) {
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line = new ol.geom.LineString(coordinates);
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} else {
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line.setCoordinates(coordinates);
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}
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}
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map.requestRenderFrame();
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};
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$(map.getViewport()).on('mousemove', function(evt) {
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var coordinate = map.getEventCoordinate(evt.originalEvent);
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displaySnap(coordinate);
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});
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map.on('singleclick', function(evt) {
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displaySnap(evt.coordinate);
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});
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var imageStyle = new ol.style.Circle({
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radius: 5,
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fill: null,
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stroke: new ol.style.Stroke({
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color: 'rgba(255,0,0,0.9)',
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width: 1
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})
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});
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var strokeStyle = new ol.style.Stroke({
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color: 'rgba(255,0,0,0.9)',
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width: 1
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});
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map.on('postcompose', function(evt) {
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var vectorContext = evt.vectorContext;
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if (point !== null) {
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vectorContext.setImageStyle(imageStyle);
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vectorContext.drawPointGeometry(point);
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}
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if (line !== null) {
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vectorContext.setFillStrokeStyle(null, strokeStyle);
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vectorContext.drawLineStringGeometry(line);
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}
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});
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