GeoJSON Terminator

Create a GeoJSON of overlay day and night regions.
It's derivated from Leaflet-Terminator project

Demo

You can see a demo in action using OpenLayers

It generates a 'pseudo-GeoJSON'.

Why 'pseudo'?

Coordinates longitude range go from -360 to 360 whereas it should be -180, + 180

API like OpenLayers or Leaflet can consume this GeoJSON although it's invalid from the GeoJSON spec viewpoint.

If you need a valid GeoJSON in another context, you may use something like GDAL/OGR to clip GeoJSON to a valid range with:

ogr2ogr -f "GeoJSON" output.geojson input.geojson \
-clipsrc -180 90 180 90

Usage

$3

var geoJSON = new GeoJSONTerminator();
var timeLayer = new ol.layer.Vector({
source: new ol.source.Vector({
features: (new ol.format.GeoJSON()).readFeatures(geoJSON, {
featureProjection: 'EPSG:3857'
})
}),
style: new ol.style.Style({
fill: new ol.style.Fill({
color: 'rgb(0, 0, 0)'
}),
stroke: null
}),
opacity: 0.5
});
map.addLayer(timeLayer);

With npm

// At the beginning
import VectorLayer from 'ol/layer/Vector';
import VectorSource from 'ol/source/Vector';
import GeoJSON from 'ol/format/GeoJSON';
import Style from 'ol/style/Style';
import Stroke from 'ol/style/Stroke';
import Fill from 'ol/style/Fill';
import GeoJSONTerminator from "@webgeodatavore/geojson.terminator";

// Then after map instanciation

const geoJSON = new GeoJSONTerminator();
const timeLayer = new VectorLayer({
source: new VectorSource({
features: (new GeoJSON()).readFeatures(geoJSON, {
featureProjection: 'EPSG:3857'
})
}),
style: new Style({
fill: new Fill({
color: 'rgb(0, 0, 0)'
}),
stroke: null
}),
opacity: 0.5
});
map.addLayer(timeLayer);