Enum Curve 

pub enum Curve {
    Line(Segment),
    Arc(Arc),
    Circle(Circle),
    Cubic(CubicBez),
}

One elementary curve piece. Shapes decompose into these for intersections, trimming, hit-testing and tessellation.

Variants

Line(Segment)

Straight segment.

Arc(Arc)

Circular arc.

Circle(Circle)

Full circle (closed, parameter = angle / 2π).

Cubic(CubicBez)

Cubic Bézier (quadratics are elevated exactly).

Implementations

impl Curve

pub fn point_at(&self, t: f64) -> Point

Point at normalized parameter t ∈ [0,1].

pub fn start(&self) -> Point

Start point (circles start at angle 0).

pub fn end(&self) -> Point

End point.

pub fn is_closed(&self) -> bool

Whether the curve is closed on itself.

pub fn bbox(&self) -> Aabb

Bounding box.

pub fn closest(&self, p: Point) -> (f64, Point)

Closest point (t, point).

pub fn distance_to_point(&self, p: Point) -> f64

Distance to p.

pub fn length(&self) -> f64

Length.

pub fn flatten_into(&self, tol: f64, out: &mut Vec<Point>)

Append flattened points (excluding the start point) to out.

pub fn tangent_at(&self, t: f64) -> Option<Vector>

Unit tangent at t (None where the derivative vanishes).

pub const fn kind_name(&self) -> &'static str

Kind name for diagnostics.

Trait Implementations

impl Clone for Curve

fn clone(&self) -> Curve

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Curve

impl Debug for Curve

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Curve

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Curve

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Curve

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Curve