Struct flat_projection::FlatProjection

pub struct FlatProjection<T: Float> { /* fields omitted */ }

Projection from WGS84 to a cartesian coordinate system for fast geodesic approximations.

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

Methods

impl<T: Float> FlatProjection<T>

pub fn new(latitude: T) -> FlatProjection<T>

Creates a new FlatProjection instance that will work best around the given latitude.

let proj = FlatProjection::new(51.);

pub fn project(&self, longitude: T, latitude: T) -> FlatPoint<T>

Converts a longitude and latitude (in degrees) to a FlatPoint instance that can be used for fast geodesic approximations.

let (lon, lat) = (6.186389, 50.823194);

let proj = FlatProjection::new(51.);

let flat_point = proj.project(lon, lat);

pub fn unproject(&self, p: &FlatPoint<T>) -> (T, T)

Converts a FlatPoint back to a (lon, lat) tuple.

let (lon, lat) = (6.186389, 50.823194);

let proj = FlatProjection::new(51.);

let flat_point = proj.project(lon, lat);

let result = proj.unproject(&flat_point);

assert_eq!(result.0, lon);

assert_eq!(result.1, lat);

Trait Implementations

impl<T: Debug + Float> Debug for FlatProjection<T>

fn fmt(&self, __arg_0: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<T: Copy + Float> Copy for FlatProjection<T>

impl<T: Clone + Float> Clone for FlatProjection<T>

fn clone(&self) -> FlatProjection<T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: PartialEq + Float> PartialEq for FlatProjection<T>

fn eq(&self, __arg_0: &FlatProjection<T>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &FlatProjection<T>) -> bool

This method tests for !=.

impl<T: PartialOrd + Float> PartialOrd for FlatProjection<T>

fn partial_cmp(&self, __arg_0: &FlatProjection<T>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, __arg_0: &FlatProjection<T>) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, __arg_0: &FlatProjection<T>) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, __arg_0: &FlatProjection<T>) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, __arg_0: &FlatProjection<T>) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.