spherical operations on the globe
npm install spherical
Spherical world utilities
The default value of the radius is Earth's radius of 6378137 meters.
heading(from, to)
Heading expressed as degrees between locations expressed as [lon, lat].
distance(from, to, [radius])
Distance in meters between locations expressed as [lon, lat].
radial(from, heading, distance, [radius])
Given a location as [lon, lat], heading in degrees, and distance in meters,
return another [lon, lat] point of a point at that offset.
Adapted from OpenLayers