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highway900/static-map.html

Created June 30, 2021 04:32
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use map.on(<event> ...) to get the bounding box.
Raw
static-map.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Highlight features within a bounding box</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<link href="https://api.mapbox.com/mapbox-gl-js/v2.3.1/mapbox-gl.css" rel="stylesheet">
<script src="https://api.mapbox.com/mapbox-gl-js/v2.3.1/mapbox-gl.js"></script>
<script src="https://unpkg.com/[email protected]/dist/flatgeobuf-geojson.min.js"></script>
<script src="https://unpkg.com/json-formatter-js"></script>
<style>
body {
margin: 0;
padding: 0;
}
#cost {
display: block;
position: relative;
margin: 20px auto;
width: 50%;
height: 40px;
padding: 0px;
border: none;
border-radius: 3px;
font-size: 12px;
text-align: center;
color: #fff;
background: #ee8a65;
}
#map {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
</style>
</head>
<body>
<style>
.boxdraw {
background: rgba(56, 135, 190, 0.1);
border: 2px solid #3887be;
position: absolute;
top: 0;
left: 0;
width: 0;
height: 0;
}
</style>
<div id="map"></div>
<button id="cost">Your Fiber Home Passed Network Install Distance is: ??? <br>(Hold Shift and Click to Create a Box
Selection)</button>
<button id="header">test</button>
<script>
// TO MAKE THE MAP APPEAR YOU MUST
// ADD YOUR ACCESS TOKEN FROM
// https://account.mapbox.com
mapboxgl.accessToken = 'pk.eyJ1IjoiZmhrIiwiYSI6ImNqczVveGNhdTAzanU0NG12NHF5anN0eG0ifQ.VKTajL9diCZk2afccGfbRw';
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/streets-v11',
// center: [-98, 38.88],
center: [8.8, 47.2],
minZoom: 2,
zoom: 3
});
// Disable default box zooming.
map.boxZoom.disable();
// Create a popup, but don't add it to the map yet.
var popup = new mapboxgl.Popup({
closeButton: false
});
map.on('load', function () {
var canvas = map.getCanvasContainer();
// Variable to hold the starting xy coordinates
// when `mousedown` occured.
var start;
let startLngLat = [];
// Variable to hold the current xy coordinates
// when `mousemove` or `mouseup` occurs.
var current;
// Variable for the draw box element.
var box;
// map.fitBounds([-87.76005585013002, 33.42767364639681, -87.34698671203543, 33.014276881381846]);
map.fitBounds([-73.36116172723975, 46.06264786003379, -69.88048561753695, 41.7784533368563]);
// map.fitBounds([8.8, 47.2, 9.5, 55.3]);
// Add a custom vector tileset source. The tileset used in
// this example contains a feature for every county in the U.S.
// Each county contains four properties. For example:
// {
// COUNTY: "Uintah County",
// FIPS: 49047,
// median-income: 62363,
// population: 34576
// }
map.addSource('solution', {
'type': 'vector',
'url': 'mapbox://fhk.capai6ra'
});
map.addLayer(
{
'id': 'solution',
'type': 'line',
'source': 'solution',
'source-layer': 'solution'
},
'settlement-label'
); // Place polygon under these labels.
map.addLayer(
{
'id': 'solution-highlighted',
'type': 'line',
'source': 'solution',
'source-layer': 'solution',
'filter': ['in', 'id', ''],
'paint': {
"line-color": "rgb(255, 0, 0)",
"line-width": 10
}
},
'settlement-label'
); // Place polygon under these labels.
map.on('mousedown', (e) => {
if (!(e.originalEvent.shiftKey && e.originalEvent.button === 0)) return;
console.log('map.on.down', [e.lngLat.lng, e.lngLat.lat]);
startLngLat = [e.lngLat.lng, e.lngLat.lat];
})
map.on('mouseup', (e) => {
console.log('map.on.up', e, [start, mousePos(e.originalEvent)]);
console.log('map.on.up', [startLngLat[0], startLngLat[1], e.lngLat.lng, e.lngLat.lat]);
if (!(e.originalEvent.shiftKey && e.originalEvent.button === 0)) return;
//updateResults([startLngLat[0], startLngLat[1], e.lngLat.lng, e.lngLat.lat]);
startLngLat = [];
})
// Set `true` to dispatch the event before other functions
// call it. This is necessary for disabling the default map
// dragging behaviour.
canvas.addEventListener('mousedown', mouseDown, true);
// Return the xy coordinates of the mouse position
function mousePos(e) {
var rect = canvas.getBoundingClientRect();
return new mapboxgl.Point(
e.clientX - rect.left - canvas.clientLeft,
e.clientY - rect.top - canvas.clientTop
);
}
function mouseDown(e) {
// Continue the rest of the function if the shiftkey is pressed.
if (!(e.shiftKey && e.button === 0)) return;
// Disable default drag zooming when the shift key is held down.
map.dragPan.disable();
// Call functions for the following events
document.addEventListener('mousemove', onMouseMove);
document.addEventListener('mouseup', onMouseUp);
document.addEventListener('keydown', onKeyDown);
// Capture the first xy coordinates
start = mousePos(e);
}
function onMouseMove(e) {
// Capture the ongoing xy coordinates
current = mousePos(e);
// Append the box element if it doesnt exist
if (!box) {
box = document.createElement('div');
box.classList.add('boxdraw');
canvas.appendChild(box);
}
var minX = Math.min(start.x, current.x),
maxX = Math.max(start.x, current.x),
minY = Math.min(start.y, current.y),
maxY = Math.max(start.y, current.y);
// Adjust width and xy position of the box element ongoing
var pos = 'translate(' + minX + 'px,' + minY + 'px)';
box.style.transform = pos;
box.style.WebkitTransform = pos;
box.style.width = maxX - minX + 'px';
box.style.height = maxY - minY + 'px';
}
function onMouseUp(e) {
// Capture xy coordinates
finish([start, mousePos(e)]);
}
function onKeyDown(e) {
// If the ESC key is pressed
if (e.keyCode === 27) finish();
}
function finish(bbox) {
// Remove these events now that finish has been called.
document.removeEventListener('mousemove', onMouseMove);
document.removeEventListener('keydown', onKeyDown);
document.removeEventListener('mouseup', onMouseUp);
if (box) {
box.parentNode.removeChild(box);
box = null;
}
// If bbox exists. use this value as the argument for `queryRenderedFeatures`
if (bbox) {
var features = map.queryRenderedFeatures(bbox, {
layers: ['solution']
});
if (features.length >= 100000) {
return window.alert('Select a smaller number of features');
}
var total_length = 0
features.forEach(function (feature) {
total_length = total_length + feature.properties.id;
})
const elem = document.getElementById("cost");
elem.innerText = "Your Fiber Home Passed Network Install Distance is: " + total_length + " miles";
console.log(elem.value)
// Run through the selected features and set a filter
// to match features with unique FIPS codes to activate
// the `counties-highlighted` layer.
var filter = features.reduce(
function (memo, feature) {
memo.push(feature.properties.id);
return memo;
},
['in', 'id']
);
map.setFilter('solution-highlighted', filter);
}
map.dragPan.enable();
}
map.on('mousemove', function (e) {
var features = map.queryRenderedFeatures(e.point, {
layers: ['solution-highlighted']
});
// Change the cursor style as a UI indicator.
map.getCanvas().style.cursor = features.length ? 'pointer' : '';
if (!features.length) {
popup.remove();
return;
}
var feature = features[0];
popup
.setLngLat(e.lngLat)
.setText(feature.properties.id)
.addTo(map);
});
// map.addSource('fgb', {'type': 'geojson'});
// optionally show some meta-data about the FGB file
function handleHeaderMeta(headerMeta) {
const header = document.getElementById('header')
const formatter = new JSONFormatter(headerMeta, 10)
while (header.firstChild)
header.removeChild(header.firstChild)
header.appendChild(formatter.render())
}
async function updateResults(bounds) {
//let bounds = [-88.6830418859433, 35.14535067587707, -84.77575812292764, 30.20346180002214];
let bb = {
minX: bounds[0],
maxX: bounds[1],
minY: bounds[2],
maxY: bounds[3],
};
// Use flatgeobuf JavaScript API to iterate features as geojson.
// Because we specify a bounding box, flatgeobuf will only fetch the relevant subset of data,
// rather than the entire file.
const iter = flatgeobuf.deserialize('https://flatgeobuf.septima.dk/population_areas.fgb', bb, handleHeaderMeta);
const colorScale = ((d) => {
return d > 750 ? '#800026' :
d > 500 ? '#BD0026' :
d > 250 ? '#E31A1C' :
d > 100 ? '#FC4E2A' :
d > 50 ? '#FD8D3C' :
d > 25 ? '#FEB24C' :
d > 10 ? '#FED976' :
'#FFEDA0'
});
for await (const feature of iter) {
console.debug(feature);
// map.getSource('fgb').setData(feature);
}
}
});
</script>
</body>
</html>
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