Struct Arc 

pub struct Arc { /* private fields */ }

Arc vertex generator.

Generates vertices along an elliptical arc defined by center, radii, start angle, end angle, and direction (CW/CCW).

Port of C++ agg::arc.

Implementations

impl Arc

pub fn new( x: f64, y: f64, rx: f64, ry: f64, a1: f64, a2: f64, ccw: bool, ) -> Self

Create a new arc.

pub fn default_new() -> Self

Create a default (uninitialized) arc.

pub fn init( &mut self, x: f64, y: f64, rx: f64, ry: f64, a1: f64, a2: f64, ccw: bool, )

Re-initialize with new parameters.

pub fn set_approximation_scale(&mut self, s: f64)

Set approximation scale (affects step size).

pub fn approximation_scale(&self) -> f64

Get current approximation scale.

Trait Implementations

impl VertexSource for Arc

fn rewind(&mut self, _path_id: u32)

Reset the vertex source to the beginning of the given path. path_id selects which sub-path to iterate (0 for the first/only path).

fn vertex(&mut self, x: &mut f64, y: &mut f64) -> u32

Return the next vertex. Writes coordinates to x and y, returns a path command. Returns PATH_CMD_STOP when iteration is complete.