Trait Scalar

pub trait Scalar:
    Sized
    + Float
    + NumCast
    + FloatConst
    + Display
    + Debug
    + Trig
    + AddAssign
    + SubAssign
    + MulAssign
    + DivAssign {
    const HALF: Self;
    const ZERO: Self;
    const ONE: Self;
    const TWO: Self;
    const THREE: Self;
    const FOUR: Self;
    const FIVE: Self;
    const SIX: Self;
    const SEVEN: Self;
    const EIGHT: Self;
    const NINE: Self;
    const TEN: Self;
    const MIN: Self;
    const MAX: Self;
    const EPSILON: Self;
    const DIV_EPSILON: Self = Self::EPSILON;

    // Required method
    fn value(v: f32) -> Self;

    // Provided method
    fn epsilon_for(_reference: Self) -> Self { ... }
}

Available on crate feature canvas only.

Required Associated Constants

const HALF: Self

const ZERO: Self

const ONE: Self

const TWO: Self

const THREE: Self

const FOUR: Self

const FIVE: Self

const SIX: Self

const SEVEN: Self

const EIGHT: Self

const NINE: Self

const TEN: Self

const MIN: Self

const MAX: Self

const EPSILON: Self

Provided Associated Constants

const DIV_EPSILON: Self = Self::EPSILON

Required Methods

fn value(v: f32) -> Self

Provided Methods

fn epsilon_for(_reference: Self) -> Self

Epsilon constants are usually not a good way to deal with float precision. Float precision depends on the magnitude of the values and so should appropriate epsilons.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl Scalar for f32

const HALF: f32 = 0.5f32

const ZERO: f32 = 0f32

const ONE: f32 = 1f32

const TWO: f32 = 2f32

const THREE: f32 = 3f32

const FOUR: f32 = 4f32

const FIVE: f32 = 5f32

const SIX: f32 = 6f32

const SEVEN: f32 = 7f32

const EIGHT: f32 = 8f32

const NINE: f32 = 9f32

const TEN: f32 = 10f32

const MIN: f32 = -3.40282347E+38f32

const MAX: f32 = 3.40282347E+38f32

const EPSILON: f32 = 9.99999974E-5f32

fn epsilon_for(reference: f32) -> f32

fn value(v: f32) -> f32

impl Scalar for f64

const HALF: f64 = 0.5f64

const ZERO: f64 = 0f64

const ONE: f64 = 1f64

const TWO: f64 = 2f64

const THREE: f64 = 3f64

const FOUR: f64 = 4f64

const FIVE: f64 = 5f64

const SIX: f64 = 6f64

const SEVEN: f64 = 7f64

const EIGHT: f64 = 8f64

const NINE: f64 = 9f64

const TEN: f64 = 10f64

const MIN: f64 = -1.7976931348623157E+308f64

const MAX: f64 = 1.7976931348623157E+308f64

const EPSILON: f64 = 1.0E-8f64

fn epsilon_for(reference: f64) -> f64

fn value(v: f32) -> f64

Implementors