Enum Twilight 

pub enum Twilight {
    Civil,
    Nautical,
    Astronomical,
}

A twilight definition: how far below the geometric horizon the Sun must sit for the sky to count as dark.

Variants

Civil

Sun below −6°.

Nautical

Sun below −12°.

Astronomical

Sun below −18° — fully dark for deep-sky imaging.

Implementations

impl Twilight

pub fn threshold(self) -> Angle

The solar altitude threshold this definition uses.

use skymath::Twilight;

assert_eq!(Twilight::Astronomical.threshold().degrees(), -18.0);

Trait Implementations

impl Clone for Twilight

fn clone(&self) -> Twilight

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Twilight

impl Debug for Twilight

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Twilight

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Twilight

impl PartialEq for Twilight

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Twilight

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Twilight