Struct mappers::Ellipsoid

pub struct Ellipsoid {
    pub A: f64,
    pub B: f64,
    pub E: f64,
    pub F: f64,
}

Ellipsoid struct that defines all values contained by reference ellipsoids.

Values for pre-defined ellipsoids are taken from the EPSG Geodetic Parameter Dataset, Map projections: A working manual (John P. Snyder, 1987) or Proj documentation.

Because Rust consts currently do not support floating-point operations, to maintain consistent precision across all targets pre-defined ellipsoids are defined as functions. The overhead of calling these functions should be negligible in most cases.

Fields

A: f64

Ellipsoid semi-major axis

B: f64

Ellipsoid semi-minor axis

E: f64

Ellipsoid eccentricity

F: f64

Ellipsoid flattening

Implementations

impl Ellipsoid

pub fn new(semi_major_axis: f64, inverse_flattening: f64) -> Self

Ellipsoid constructor using semi-major axis and inverse flattening.

pub fn sphere() -> Self

Ellipsoid for a sphere with radius of 6,370,997.0 meters.

pub fn wgs84() -> Self

World Geodetic System 1984 (WGS84) ellipsoid (EPSG:7030).

pub fn grs80() -> Self

Geodetic Reference System 1980 (GRS 1980) ellipsoid (EPSG:7019).

pub fn wgs72() -> Self

World Geodetic System 1972 (WGS72) ellipsoid (EPSG:7043).

pub fn grs67() -> Self

Geodetic Reference System 1967 (GRS 1967) ellipsoid (EPSG:7036).

pub fn airy1830() -> Self

Airy 1830 ellipsoid (EPSG:7001).

pub fn wgs66() -> Self

World Geodetic System 1966 (WGS66) ellipsoid.

pub fn wgs60() -> Self

World Geodetic System 1960 (WGS60) ellipsoid.

pub fn clarke1866() -> Self

Clarke 1866 ellipsoid (EPSG:7008).

Trait Implementations

impl Clone for Ellipsoid

fn clone(&self) -> Ellipsoid

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Ellipsoid

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<Ellipsoid> for Geodesic

fn from(ellps: Ellipsoid) -> Geodesic

Converts to this type from the input type.

impl From<Geodesic> for Ellipsoid

fn from(geod: Geodesic) -> Self

Converts to this type from the input type.

impl PartialEq<Ellipsoid> for Ellipsoid

fn eq(&self, other: &Ellipsoid) -> bool

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

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd<Ellipsoid> for Ellipsoid

fn partial_cmp(&self, other: &Ellipsoid) -> Option<Ordering>

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

fn lt(&self, other: &Rhs) -> bool

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

fn le(&self, other: &Rhs) -> bool

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

fn gt(&self, other: &Rhs) -> bool

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

fn ge(&self, other: &Rhs) -> bool

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

impl Copy for Ellipsoid

impl StructuralPartialEq for Ellipsoid