Struct Path 

pub struct Path { /* private fields */ }

A sequence of drawing commands describing one or more sub-paths.

A path is the unit of geometry in the chart renderer: axes, series polylines, pie slices, radar rings, and text decorations are all expressed as paths. Paths are immutable once built — the builder produces the final command buffer, and the tessellator consumes it without mutating it.

Implementations

impl Path

Inherent implementation of Path.

pub fn new() -> Self

Returns an empty path.

pub fn builder() -> PathBuilder

Returns a path builder.

Returns

• PathBuilder - A PathBuilder value.

pub fn commands(&self) -> &[PathCommand]

Returns the path’s command buffer.

Returns

• &[PathCommand] - A [PathCommand] value.

pub fn fill_rule(&self) -> FillRule

Returns the rule used to decide which parts of the path are inside.

Returns

• FillRule - A FillRule value.

pub fn is_empty(&self) -> bool

Returns true when the path holds no commands.

Returns

• bool - A boolean.

pub fn len(&self) -> usize

Returns the number of commands in the path.

Returns

• usize - A non-negative integer.

pub fn bounds(&self) -> BBox

Returns the tightest axis-aligned box containing the path.

The bounds are computed from the control points of every curve, which is a conservative over-estimate for Béziers — the true extremum of a curve lies strictly inside the control polygon. Over-estimating is the safe direction for culling: a shape is never culled when it should be drawn.

Returns

• BBox - A BBox value.

pub fn transformed(&self, transform: &Transform2D) -> Path

Returns a copy of the path with the given transform applied.

The transform is baked into the coordinates rather than kept alongside the path, so the tessellator never has to apply it per-vertex.

Arguments

• &Transform2D - Shared reference to a Transform2D.

Returns

• Path - A Path value.

Trait Implementations

impl Clone for Path

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 Path

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

Formats the value using the given formatter.

impl Default for Path

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for Path

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Path