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Auto fit map to boundaries

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This commit is contained in:
Matt Way
2024-08-17 22:14:27 +10:00
parent 0a7af5c65b
commit f60b1802d5
2 changed files with 33 additions and 1 deletions
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2
map-generator/dist/main.js vendored
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File diff suppressed because one or more lines are too long

32
map-generator/src.js
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@@ -33,6 +33,13 @@ fetch("wards_withboundaries.json")
.then((wardData) => {
const filteredWardData = wardData.filter((ward) => normaliseCouncilName(ward.parentElectorateName) == councilName);
var bounds = {
"west": undefined,
"south": undefined,
"east": undefined,
"north": undefined
}
filteredWardData.forEach(wardData => {
const featureCollection = {
'type': 'FeatureCollection',
@@ -44,6 +51,24 @@ fetch("wards_withboundaries.json")
]
};
featureCollection.features[0].geometry.coordinates[0].forEach(coordinate => {
if (bounds.west == undefined || coordinate[0] < bounds.west) {
bounds.west = coordinate[0];
}
if (bounds.south == undefined || coordinate[1] < bounds.south) {
bounds.south = coordinate[1];
}
if (bounds.east == undefined || coordinate[0] > bounds.east) {
bounds.east = coordinate[0];
}
if (bounds.north == undefined || coordinate[1] > bounds.north) {
bounds.north = coordinate[1];
}
});
// Add data
map.addSource("data_"+wardData.electorateId, {
'type': 'geojson',
@@ -94,7 +119,14 @@ fetch("wards_withboundaries.json")
'text-allow-overlap': true
}
});
});
map.fitBounds([
[bounds.west, bounds.south],
[bounds.east, bounds.north]
], {
padding: 25,
animate: false
});
}).catch(err => {