Struct Path 

pub struct Path { /* private fields */ }

An immutable path: verb + point arrays (SoA), built once via PathBuilder, shared by Arc inside display-list ops (cloning a recorded list never copies point data). Flattening is the CALLER’s move because tolerance depends on the device scale at draw time — a path has no scale of its own.

Implementations

impl Path

pub fn bounds(&self) -> Rect

pub fn tight_bounds(&self) -> Rect

Exact axis-aligned bounds of the path’s lines and Bézier curves. Recording uses the cheaper control-point bounds above; queries such as Canvas text metrics use this slower extrema walk when tight ink bounds are part of the API contract.

pub fn is_empty(&self) -> bool

pub fn heap_bytes(&self) -> usize

Heap footprint estimate (points dominate) — memory reports only.

pub fn contains(&self, point: Point, fill_rule: FillRule) -> bool

Is point inside this path under fill_rule? The query runs on the curves themselves rather than a flattened approximation, so the answer does not drift with zoom. Every contour closes implicitly, matching how fills are drawn, and a point exactly on the outline counts as inside.

“On the outline” is decided with the same ABSOLUTE tolerance Skia uses (1/4096 of a unit), so on a path whose coordinates are tiny or enormous that band is proportionally wider or narrower than it looks.

pub fn measure(&self, tolerance: f32) -> Vec<ContourMeasure>

Measure each contour for arc length — Skia’s SkContourMeasure. Contours with no length (a lone point) are dropped, so every returned measure can be sampled. tolerance is the flattening tolerance, and bounds the measurement’s accuracy with it.

pub fn flatten(&self, tolerance: f32) -> Vec<Contour>

Flatten to polygonal contours at tolerance (max deviation, in the path’s own units). Fills treat last→first as an implicit edge for every contour; strokes branch on Contour::closed.

Trait Implementations

impl Clone for Path

fn clone(&self) -> Path

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Path

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

Formats the value using the given formatter.