Crate flat_projection [−] [src]
Fast geodesic distance approximations via flat surface projection
FlatProjection struct can by used to project geographical
coordinates from WGS84 into a cartesian coordinate system.
In the projected form approximated distance and bearing calculations
can be performed much faster than on a sphere. The precision of these
calculations is very precise for distances up to about 500 km.
let (lon1, lat1) = (6.186389, 50.823194); let (lon2, lat2) = (6.953333, 51.301389); let proj = FlatProjection::new(51.05); let p1 = proj.project(lon1, lat1); let p2 = proj.project(lon2, lat2); let distance = p1.distance(&p2); // -> 75.648 km
Representation of a geographical point on Earth as projected
Projection from WGS84 to a cartesian coordinate system for fast geodesic approximations.