geodesy functionality for leaflet
npm install leaflet-geodesyA Leaflet plugin for the earth.
With browserify
npm install --save leaflet-geodesy
Via the Mapbox.js Plugin CDN: https://www.mapbox.com/mapbox.js/plugins/#leaflet-geodesy
Otherwise
https://raw.github.com/mapbox/leaflet-geodesy/gh-pages/leaflet-geodesy.js
Either via require('leaflet-geodesy') or the LGeo object when used without
browserify.
geodesy.circle(center, radius, opt)
Given center as L.latLng
or [lat, lon] and radius in meters, and opt being
all path options plusparts for sections to draw, create a L.polygon layer of a real-earth
circle.
The generated layer supports:
* setLatLng(center): set a new centerpoint
* setRadius(radius): adjust radius
* getRadius(): get radius
* toGeoJSON(): get GeoJSON representation
geodesy.area(layer)
Given a L.Polygon layer, return the physical area contained within.
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* spherical does the work behind the scenes
* everything is wgs84-based