Enum Linetype 

pub enum Linetype {
    Solid,
    Dashed,
    Dotted,
    DashDot,
    LongDash,
    TwoDash,
    Custom(Vec<(f64, f64)>),
}

Line type patterns.

The named variants are ggplot2’s fixed patterns; Linetype::Custom takes a caller-supplied dash/gap sequence (#220), e.g. Linetype::Custom(vec![(0.0, 10.0)]) together with LineEnd::Round draws a row of round dots every 10 px (zero-length dashes are drawn as round caps), as flow-diagram edges use.

Linetype is no longer Copy (a Custom pattern owns its Vec) — clone it where a copy was taken before.

Variants

Solid

Dashed

Dotted

DashDot

LongDash

TwoDash

Custom(Vec<(f64, f64)>)

Arbitrary (dash, gap) pairs in px, rendered through the same stroke-dasharray / dashed-stroking path as the named variants.

Degenerate input never panics: pairs with a non-finite value are dropped, negative lengths are clamped to 0, and a pattern with no usable pairs (empty, all-NaN, or a cycle of zero total length) draws solid. See Linetype::dash_pattern.

Implementations

impl Linetype

pub const ALL: &[Linetype]

All named linetypes in order (for discrete scale mapping). Linetype::Custom is not part of the cycle.

pub fn pattern(&self) -> &[(f64, f64)]

Get the dash pattern as (draw_len, gap_len) pairs in pixels, exactly as stored. For Linetype::Custom this is the caller’s raw input; renderers use the sanitised Linetype::dash_pattern instead.

pub fn dash_pattern(&self) -> Vec<(f64, f64)>

The dash pattern a renderer should draw: Linetype::pattern with non-finite pairs dropped and negative lengths clamped to 0. Returns an empty vector (solid) when nothing usable is left or one full dash+gap cycle is shorter than 0.01 px (or overflows to infinity), so no backend ever sees a NaN, a negative length, or a zero-length cycle (which would never advance a dashed stroker).

Trait Implementations

impl Clone for Linetype

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Linetype

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

Formats the value using the given formatter.

impl PartialEq for Linetype

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Linetype