pub trait HaversineClosestPoint<T>where
T: GeoFloat + FromPrimitive,{
// Required method
fn haversine_closest_point(&self, from: &Point<T>) -> Closest<T>;
}Expand description
Calculates the closest Point on a geometry from a given Point in sperical coordinates.
Similar to ClosestPoint but for spherical coordinates:
- Longitude (x) in the [-180; 180] degrees range.
- Latitude (y) in the [-90; 90] degrees range.
The implementation is based on https://edwilliams.org/avform147.htm#XTE.
See Closest<F> for a description of the return states.
Note: This may return Closest::Intersection even for non-intersecting geometies if they are
very close to the input.
Example:
use approx::assert_relative_eq;
let line = Line::new(Point::new(-85.93942, 32.11055), Point::new(-84.74905, 32.61454));
let p_from = Point::new(-84.75625, 31.81056);
if let Closest::SinglePoint(pt) = line.haversine_closest_point(&p_from) {
assert_relative_eq!(pt, Point::new(-85.13337428852164, 32.45365659858937), epsilon = 1e-6);
} else {
panic!("Closest::SinglePoint expected");
}