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Add METAR overlay #214

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Add METAR overlay #214

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0d41f4a
Add METAR overlay
szechyjs Jan 26, 2023
0aaff7d
Add border
szechyjs Jan 27, 2023
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4 changes: 4 additions & 0 deletions public_html/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -116,6 +116,10 @@
<div class="settingsCheckbox" id="nexrad_checkbox"></div>
<div class="settingsText">NEXRAD Weather</div>
</div>
<div class="settingsOptionContainer">
<div class="settingsCheckbox" id="metar_checkbox"></div>
<div class="settingsText">METARs</div>
</div>
<div class="settingsOptionContainer">
<div class="settingsCheckbox" id="sitepos_checkbox"></div>
<div class="settingsText">Site Position and Range Rings</div>
Expand Down
79 changes: 79 additions & 0 deletions public_html/layers.js
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Original file line number Diff line number Diff line change
Expand Up @@ -267,3 +267,82 @@ function createBaseLayers() {

return layers;
}

function createMetarLayer() {
var metarTileGrid = ol.tilegrid.createXYZ({ minZoom: 3, maxZoom: 16 });

var metarSource = new ol.source.Vector({
// The API doesn't support CORS, so we have to use JSONP with a custom loader
loader: function (extent, resolution, projection, success, failure) {
var lonLat = ol.proj.transformExtent(extent, 'EPSG:3857', 'EPSG:4326');
var url = 'https://www.aviationweather.gov/cgi-bin/json/MetarJSON.php';
$.ajax({
url: url,
data: {
filter: 'prior',
density: 0,
date: new Date().toISOString().replace(/\D/g, '').slice(0, 12),
bbox: lonLat.join(','),
zoom: metarTileGrid.getZForResolution(resolution) - 1
},
dataType: 'jsonp',
jsonpCallback: 'metarCallback',
success: metarCallback(extent, projection, success, failure)
});
},
strategy: ol.loadingstrategy.bbox,
attributions: 'METAR courtesy of <a href="https://www.aviationweather.gov">Aviation Weather Center</a>'
});

var metarCallback = function (extent, projection, success, failure) {
return function (data) {
var format = new ol.format.GeoJSON();
var features = format.readFeatures(data, { extent: extent, featureProjection: projection });
metarSource.addFeatures(features);
if (success !== undefined) {
success(features);
}
}
};

var metar = new ol.layer.Vector({
name: 'metar',
type: 'overlay',
title: 'METAR',
opacity: 0.8,
visible: false,
source: metarSource,
style: function style(feature) {
var cat = feature.get('fltcat');
var color = '#666';
if (cat === 'VFR') {
color = '#00AB42'
} else if (cat === 'MVFR') {
color = '#0016E8'
} else if (cat === 'IFR') {
color = '#FF0007'
} else if (cat === 'LIFR') {
color = '#CA33F9'
}
return new ol.style.Style({
image: new ol.style.Circle({
radius: 5,
fill: new ol.style.Fill({
color: color
}),
stroke: new ol.style.Stroke({
color: '#fff',
width: 2
})
})
});
}
});

var refreshMetar = function () {
metar.getSource().refresh();
};
window.setInterval(refreshMetar, 5 * 60000);

return metar;
}
10 changes: 9 additions & 1 deletion public_html/script.js
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Original file line number Diff line number Diff line change
Expand Up @@ -930,6 +930,8 @@ function initialize_map() {
})
});

var metarLayer = createMetarLayer();

layers.push(new ol.layer.Group({
title: 'Overlays',
layers: [
Expand All @@ -951,6 +953,8 @@ function initialize_map() {
})
}),

metarLayer,

iconsLayer
]
}));
Expand Down Expand Up @@ -1042,12 +1046,15 @@ function initialize_map() {
}
}
});

OLMap.getView().on('change:resolution', function(event) {
ZoomLvl = localStorage['ZoomLvl'] = OLMap.getView().getZoom();
for (var plane in Planes) {
Planes[plane].updateMarker(false);
};
if (metarLayer.getVisible()) {
metarLayer.getSource().refresh();
}
});

OLMap.on(['click', 'dblclick'], function(evt) {
Expand Down Expand Up @@ -1097,6 +1104,7 @@ function initialize_map() {
// handle the layer settings pane checkboxes
OLMap.once('postrender', function(e) {
toggleLayer('#nexrad_checkbox', 'nexrad');
toggleLayer('#metar_checkbox', 'metar');
toggleLayer('#sitepos_checkbox', 'site_pos');
toggleLayer('#actrail_checkbox', 'ac_trail');
toggleLayer('#acpositions_checkbox', 'ac_positions');
Expand Down