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Add a debug page for globe getBounds #12199

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merged 1 commit into from
Aug 29, 2022
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Add a debug page for globe getBounds #12199

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120 changes: 120 additions & 0 deletions debug/globe-bounds.html
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Original file line number Diff line number Diff line change
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<!DOCTYPE html>
<html>
<head>
<title>Mapbox GL JS debug page</title>
<meta charset='utf-8'>
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=no">
<link rel='stylesheet' href='../dist/mapbox-gl.css' />
<style>
body { margin: 0; padding: 0; }
#map, #map2 { position: absolute; top: 0; bottom: 0; }
#map { left: 0; right: 50%; }
#map2 { left: 50%; right: 0; }
</style>
</head>

<body>
<div id='map'></div>
<div id='map2'></div>

<script src='../dist/mapbox-gl-dev.js'></script>
<script src='../debug/access_token_generated.js'></script>
<script>

var map = window.map = new mapboxgl.Map({
container: 'map',
zoom: 2,
center: [0, 0],
style: 'mapbox://styles/mapbox/streets-v11',
hash: true,
projection: 'globe'
});

var map2 = new mapboxgl.Map({
container: 'map2',
zoom: 0.1,
center: [0, 0],
style: 'mapbox://styles/mapbox/streets-v11',
// projection: 'globe'
});

var lineData = {
type: 'LineString',
coordinates: []
};
var boundsData = {
'type': 'LineString',
coordinates: []
};

map2.on('load', () => {
map2.addSource('bounds', {
'type': 'geojson',
'data': lineData
});
map2.addLayer({
'id': 'bounds',
'type': 'line',
'source': 'bounds',
'paint': {
'line-color': 'blue',
'line-width': 5
}
});

map2.addSource('abounds', {
'type': 'geojson',
'data': boundsData
});
map2.addLayer({
'id': 'abounds',
'type': 'line',
'source': 'abounds',
'paint': {
'line-color': 'red',
'line-width': 5
}
});

updateBounds();
});

map.on('move', () => {
updateBounds();
});

function updateBounds() {
const points = [];
const w = map._containerWidth;
const h = map._containerHeight;
const res = 20;
for (let i = 0; i <= res; i++) points.push([w * i / res, 0]);
for (let i = 0; i <= res; i++) points.push([w, h * i / res]);
for (let i = 0; i <= res; i++) points.push([w * (1 - i / res), h]);
for (let i = 0; i <= res; i++) points.push([0, h * (1 - i / res)]);

lineData.coordinates = points.map(p => map.unproject(p).toArray());

const bounds = map.getBounds();

boundsData.coordinates = [
bounds.getSouthWest().toArray(),
bounds.getSouthEast().toArray(),
bounds.getNorthEast().toArray(),
bounds.getNorthWest().toArray(),
bounds.getSouthWest().toArray(),
];

map2.getSource('bounds').setData(lineData);
map2.getSource('abounds').setData(boundsData);
}

const marker = new mapboxgl.Marker();

map.on('mousemove', (e) => {
marker.setLngLat(e.lngLat).addTo(map2);
});

</script>
</body>
</html>