spherical

Spherical world utilities

api

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.

credits

Adapted from OpenLayers

• Aviation Formulary