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<!DOCTYPE html>
<html>
<head>
<title>GeoTOP Excavator</title>
<link href="src/ol.css" rel="stylesheet" type="text/css">
<link href="src/charts.css" rel="stylesheet" type="text/css">
<script src="src/ol.js"></script>
<script src="src/d3.min.js"></script>
<script src="src/charts.js"></script>
<script src="src/spin.min.js"></script>
<style>
#map {
height: 100%;
width: 100%;
position: absolute;
top: 0px; bottom: 0px; left: 0px; right: 0px;
}
.ol-scale-line {
left: auto;
right: 80px;
}
body {
margin: 0;
padding: 0;
font: normal 14px/16px 'Source Sans Pro', 'Helvetica', sans-serif;
color: white;
}
#map-ui {
background: rgba(0, 0, 0, .7);
opacity: 0.9;
width: 200px;
z-index: 9;
position: absolute;
top: 0px;
left: 0px;
bottom: 0px;
padding: 20px;
}
.z-input {
width: 40px;
}
#layer-select {
z-index: 10;
position: absolute;
background: rgb(255, 255, 255);
bottom: 20px;
}
.tabgroup {
display: none;
}
.tab {
display: table-cell;
color: #999;
font: 12px sans-serif;
text-decoration: none;
padding: 0.5em;
margin: 0;
border: 1px outset #999;
border-bottom: 1px outset white;
}
.tab.selected {
color: white;
font-weight: bold;
border: 1px outset white;
border-bottom: none;
}
.tab.margin {
display: table-cell;
color: rgba(0, 0, 0, 0);
border: none;
border-bottom: 1px outset white;
}
.tabcontent {
border: none;
border-bottom: 1px outset white;
}
.modal-container {
display: none;
background: rgba(0, 0, 0, .4);
width: 100%;
height: 100%;
left: 0px;
position: fixed;
z-index: 999;
}
.dialog {
display: block;
position: absolute;
background: rgb(220, 220, 220);
top: 50%; left: 50%;
transform: translate(-50%,-50%);
width: 400px;
height: 200px;
padding: 20px;
border-radius: 20px;
color: black;
}
.dialog-text {
position: absolute;
top: 40%; left: 50%;
transform: translate(-50%,-50%);
}
.dialog-close {
cursor: pointer;
cursor: hand;
text-decoration:none;
float:right;
font-size:24px;
font-weight:bold;
color:inherit
}
</style>
<script>
var map;
var mapLayers = [];
var mapFeatures;
var featureOverlay;
var mapModify;
var bingStyles = [
'Road',
'Aerial',
'AerialWithLabels'
];
var geotopData = [];
var activeChart = 'volumeChart';
// loadMap() - Loads and configures the OpenLayers map
function loadMap() {
var i, ii;
// Load the map styles
for (i = 0, ii = bingStyles.length; i < ii; ++i) {
mapLayers.push(new ol.layer.Tile({
visible: false,
preload: Infinity,
source: new ol.source.BingMaps({
key: 'AtPbSoOI12-0iqUFoSjzf7rl7xjeAxGsHtCNhpDrNpp_yEFLAy49DcDoxORdSylN',
imagerySet: bingStyles[i],
// use maxZoom 19 to see stretched tiles instead of the BingMaps
// "no photos at this zoom level" tiles
maxZoom: 19
})
}));
}
// Create the map
var scaleLine = new ol.control.ScaleLine();
map = new ol.Map({
layers: mapLayers,
loadTilesWhileInteracting: true,
target: 'map',
controls: ol.control.defaults({
attribution: true,
zoom: false,
rotate: false
}).extend([scaleLine]),
view: new ol.View({
projection: 'EPSG:3857',
center: [545488, 6863373],
zoom: 13
})
});
// Add outline of GeoTOP extent to the map
var geotop_outline = new ol.layer.Vector({
source: new ol.source.Vector({
projection: 'EPSG:3857',
format: new ol.format.KML(),
url: 'data/geotop_outline.kml'
})
});
geotop_outline.setMap(map);
// Add the feature overlay to the map
mapFeatures = new ol.Collection();
featureOverlay = new ol.layer.Vector({
source: new ol.source.Vector({
features: mapFeatures
}),
style: new ol.style.Style({
fill: new ol.style.Fill({
color: 'rgba(255, 255, 255, 0.3)'
}),
stroke: new ol.style.Stroke({
color: '#ffcc33',
width: 2
}),
image: new ol.style.Circle({
radius: 7,
fill: new ol.style.Fill({
color: '#ffcc33'
})
})
})
});
featureOverlay.setMap(map);
setMapStyle();
}
// setMapStyle - sets or changes the Bing map style
function setMapStyle() {
var select = document.getElementById('layer-select');
var mapStyle = select.value;
for (var i = 0; i < mapLayers.length; i++) {
mapLayers[i].setVisible(bingStyles[i] == mapStyle);
}
if (mapStyle == 'Road') {
// darker polygon on light background
featureOverlay.getStyle().getFill().setColor('rgba(0, 0, 0, 0.3)');
featureOverlay.getStyle().getStroke().setColor('#1155cc');
featureOverlay.getStyle().getStroke().setWidth(2);
featureOverlay.getStyle().getImage().getFill().setColor('#1155cc');
} else {
// lighter polygon on dark background
featureOverlay.getStyle().getFill().setColor('rgba(255, 255, 255, 0.3)');
featureOverlay.getStyle().getStroke().setColor('#ffcc33');
featureOverlay.getStyle().getStroke().setWidth(2);
featureOverlay.getStyle().getImage().getFill().setColor('#ffcc33');
}
featureOverlay.changed();
}
// setDoubleClickZoom - workaround for an OpenLayers bug which zooms the map
// when finishing drawing with a double click
function setDoubleClickZoom(value) {
var interactions = map.getInteractions();
for (var i = 0; i < interactions.getLength(); i++) {
var interaction = interactions.item(i);
if (interaction instanceof ol.interaction.DoubleClickZoom) {
interaction.setActive(value);
}
}
}
// drawOutline - draw the polygon outline of the area to be excavated
function drawOutline() {
hideChart();
mapFeatures.clear(); // make sure we only have one polygon
if (mapModify) {
map.removeInteraction(mapModify);
mapModify = null;
}
document.getElementById("excavate").disabled = true;
setDoubleClickZoom(false); // workaround for OpenLayers double click zoom bug while drawing
var mapDraw = new ol.interaction.Draw({
features: mapFeatures,
type: 'Polygon'
});
// drawEnd is called when drawing finishes
drawEnd = function(event) {
map.removeInteraction(mapDraw);
document.getElementById("excavate").disabled = false;
// set up modify interaction to allow modifying of polygon
mapModify = new ol.interaction.Modify({
features: mapFeatures,
// the SHIFT key must be pressed to delete vertices, so
// that new vertices can be drawn at the same position
// of existing vertices
deleteCondition: function(event) {
return ol.events.condition.shiftKeyOnly(event) &&
ol.events.condition.singleClick(event);
}
});
mapModify.on('modifyend', function(event) { excavate(); });
map.addInteraction(mapModify);
// workaround for OpenLayers double click zoom bug while drawing
// need to set this after a time out or zoom will trigger
setTimeout(function() {
setDoubleClickZoom(true);
excavate(); // also needs to be after time out, because in 'drawend', the feature doesn't exist yet.
}, 300);
};
mapDraw.on('drawend', drawEnd);
map.addInteraction(mapDraw);
}
// excavate:
// - process and check user input
// - call the webservice which performs the calculation
// - make charts based on the results
function excavate() {
if (mapFeatures.getLength() == 0) {
alertDialog("Outline has not been set!");
return;
}
var upperZ = parseFloat(document.getElementById("upperZ").value),
lowerZ = parseFloat(document.getElementById("lowerZ").value);
if (upperZ <= lowerZ) {
alertDialog("Maximum depth should be lower than minimum depth.");
return;
}
if (upperZ < -50 || lowerZ < -50) {
alertDialog("Depth should not exceed -50m NAP.");
return;
}
var feature = mapFeatures.item(0);
// calculate volume to be excavated
var sourceProj = map.getView().getProjection(),
polygon = feature.getGeometry(),
geom = (polygon.clone().transform(sourceProj, 'EPSG:4326')),
coordinates = geom.getLinearRing(0).getCoordinates(),
wgs84Sphere = new ol.Sphere(6378137),
area = Math.abs(wgs84Sphere.geodesicArea(coordinates)),
volume = area * (upperZ - lowerZ);
if (volume > 500.0e6) {
alertDialog("Volume " + d3.format(',.0f')(volume) +
" exceeds 500 million m3. Please choose a smaller area or depth range.");
return;
}
var geoJSON = new ol.format.GeoJSON(),
json_string = geoJSON.writeGeometry(polygon), // convert polygon to GeoJSON
upperZ = document.getElementById("upperZ").value,
lowerZ = document.getElementById("lowerZ").value,
request_url = "data/calcvolume.php?" +
"geom=" + json_string + "&" +
"lowerZ=" + lowerZ + "&" +
"upperZ=" + upperZ;
var callback = function(error, data) {
document.getElementById("excavate").disabled = false;
stopSpinner();
if (error) {
hideChart();
alertDialog("Error fetching data from database.\n");
return;
}
showChart();
geotopData = data;
makeChart();
}
document.getElementById("excavate").disabled = true;
startSpinner();
d3.json(request_url, callback); // make the REST call to the calcvolume service
}
function hideChart() {
d3.select(".tabgroup").style( {display: 'none'} );
d3.selectAll('.volumeChart, .depthChart')
.transition().duration(400).ease("linear")
.style({
display: "none"
});
d3.select('#map-ui')
.transition().duration(800).ease("exp-out")
.style("width", "200px");
}
function showChart() {
d3.select(".tabgroup").style( {display: 'block'} );
d3.select('.' + activeChart)
.transition().duration(400).ease("linear")
.style({
opacity: 1.0,
display: "block"
});
d3.select('#map-ui')
.transition().duration(800).ease("exp-out")
.style("width", "450px");
}
// switchChart - switches to the specified chart type ('volumeChart' or 'depthChart')
function switchChart(type) {
if (type == activeChart)
return;
// hide the current chart
d3.select('.' + activeChart).style({ display: "none" });
d3.select('#tab-' + activeChart).attr("class", "tab");
activeChart = type; // switch to new chart type
// show the new chart
d3.select('.' + activeChart).style({ display: "block" });
d3.select('#tab-' + activeChart).attr("class", "tab selected");
makeChart();
}
function makeChart() {
if (activeChart == 'volumeChart')
makeVolumeChart();
else
makeDepthChart();
}
// map numeric lithoclasses to names and colors
var lithoclasses = {
0: {
name: 'Antropogeen',
color: '#c1c3c6'
},
1: {
name: 'Veen',
color: '#985045'
},
2: {
name: 'Klei',
color: '#189f48'
},
3: {
name: 'Zandige klei',
color: '#b6d169'
},
5: {
name: 'Fijn zand',
color: '#fff000'
},
6: {
name: 'Matig grof zand',
color: '#ffdc00'
},
7: {
name: 'Grof zand',
color: '#ffc800'
},
8: {
name: 'Grind',
color: '#ffb400'
},
11: {
name: 'Kalksteen',
color: '#0088ff'
}
};
// makeVolumeChart - make or update the volume chart
var volumeChart;
function makeVolumeChart() {
var data = {};
// convert geotop array to data dictionary with cumulative volumes
for (var i = 0; i < geotopData.length; i++) {
var entry = geotopData[i],
z = entry[0],
lithoclass = entry[1],
volume = entry[2];
if (!data[lithoclass]) {
data[lithoclass] = {
'name': lithoclasses[lithoclass]['name'],
'value': volume,
'color': lithoclasses[lithoclass]['color']
};
} else {
data[lithoclass].value += volume;
}
}
// convert data dictionary back to sorted array
var volumeChartData = Object.keys(data).map(function(d) { return data[d]; })
.sort( function(a, b) { return b.value - a.value; });
var chartConfig = {
margin: {top: 20, right: 40, bottom: 60, left: 130},
width: 440,
height: 320,
xLabel: { dist: 40, label: "Volume (m3)"},
yLabel: { dist: 110, label: "Lithoclass"}
};
showChart(); // make sure chart is visible
if (!volumeChart)
volumeChart = new VolumeChart('.volumeChart', chartConfig);
volumeChart.update(volumeChartData);
}
// makeDepthChart - make or update the depth/probability chart
var depthChart;
function makeDepthChart() {
var data = {},
lithos = Object.keys(lithoclasses).sort(),
upperZ = -9999999,
lowerZ = 9999999;
// convert geotop array to data dictionary
for (var i = 0; i < geotopData.length; i++) {
var entry = geotopData[i];
var z = entry[0];
var lithoclass = entry[1];
upperZ = Math.max(upperZ, z);
lowerZ = Math.min(lowerZ, z);
var probability = entry[3];
if (!data[lithoclass]) data[lithoclass] = {};
data[lithoclass][z] = probability;
}
// convert data dictionary back to array ready for depth chart
var depthChartData = [];
for (var i = 0; i < lithos.length; i++) {
var lithoclass = lithos[i];
var values = [];
for (var z = upperZ; z >= lowerZ; z = z - 0.5) {
var probability = (data[lithoclass] && data[lithoclass][z]) ? data[lithoclass][z] : 0;
values.push( { z: +z, probability: +probability } );
}
depthChartData.push({
name: lithoclasses[lithoclass]['name'],
color: lithoclasses[lithoclass]['color'],
values: values
});
}
var chartConfig = {
margin: {top: 20, right: 40, bottom: 60, left: 70},
width: 440,
height: 320,
xLabel: { dist: 30, label: "Probability"},
yLabel: { dist: 50, label: "Depth"}
};
showChart();
if (!depthChart)
depthChart = new DepthChart('.depthChart', chartConfig);
depthChart.update(depthChartData, upperZ, lowerZ);
}
// startSpinner - display an animated spinner on screen
var spinner;
function startSpinner() {
var target = document.getElementById('spinner-container');
target.style.display = 'block';
if (spinner) {
spinner.spin(target);
return;
}
var opts = {
lines: 15, // The number of lines to draw
length: 28, // The length of each line
width: 9, // The line thickness
radius: 36, // The radius of the inner circle
scale: 0.5, // Scales overall size of the spinner
corners: 1, // Corner roundness (0..1)
color: '#fff', // #rgb or #rrggbb or array of colors
opacity: 0.3, // Opacity of the lines
rotate: 0, // The rotation offset
direction: 1, // 1: clockwise, -1: counterclockwise
speed: 1, // Rounds per second
trail: 54, // Afterglow percentage
fps: 20, // Frames per second when using setTimeout() as a fallback for CSS
zIndex: 2e9, // The z-index (defaults to 2000000000)
className: 'spinner', // The CSS class to assign to the spinner
top: '49%', // Top position relative to parent
left: '50%', // Left position relative to parent
shadow: false, // Whether to render a shadow
hwaccel: false, // Whether to use hardware acceleration
position: 'absolute', // Element positioning
}
spinner = new Spinner(opts).spin(target);
}
// stopSpinner - stop and remove spinner from screen
function stopSpinner() {
spinner.stop();
document.getElementById('spinner-container').style.display = 'none';
}
// alertDialog - display a modal dialog on screen
function alertDialog(message) {
document.getElementById('dialog-text').innerHTML = message;
document.getElementById('dialog-container').style.display = 'block';
}
</script>
</head>
<body>
<div id="map" class="map">
<div id="map-ui">
<h2>GeoTOP Excavator</h2>
<div>
Minimum depth<br><input class="z-input" size="3" id="upperZ" type="number" value="0"> NAP<br><br>
Maximum depth<br><input class="z-input" size="3" id="lowerZ" type="number" value="-15"> NAP<br><br>
<button id="outline" onClick="drawOutline()">Draw outline</button>
<button id="excavate" onClick="excavate()" disabled>Recalculate</button>
<br><br>
</div>
<div class="tabgroup">
<div class="tab margin" style="width: 20px"></div><a id="tab-volumeChart" class="tab selected" href="#" onClick="switchChart('volumeChart')">Volume Chart
</a><div class="tab margin" style="width: 20px"></div><a id="tab-depthChart" class="tab" href="#" onClick="switchChart('depthChart')">Depth Chart
</a><div class="tab margin" style="width: 100%"></div>
<div class="tabcontent">
<svg class="volumeChart"/>
<svg class="depthChart"/>
</div>
</div>
<select id="layer-select" onChange="setMapStyle()">
<option value="Aerial" selected>Aerial</option>
<option value="AerialWithLabels">Aerial with labels</option>
<option value="Road">Road</option>
</select>
</div>
</div>
<div id="spinner-container" class="modal-container"> </div>
<div id="dialog-container" class="modal-container">
<div class="dialog">
<span onclick="document.getElementById('dialog-container').style.display='none'" class="dialog-close">×</span>
<p id="dialog-text" class="dialog-text">Text</p>
</div>
</div>
<script>
loadMap();
</script>
</body>
</html>