Struct Conic

pub struct Conic { /* private fields */ }

A x^2 + B xy + C y^2 + D x + E y + F = 0, coefficients exact.

Implementations

impl Conic

pub fn from_coefficients(coeffs: [f64; 6]) -> Result<Self, ExactError>

From the six coefficients [A, B, C, D, E, F].

Refuses non-finite input, and a quadratic part that is identically zero (that is a line; use the line APIs).

pub fn circle(centre: Point2, radius: f64) -> Result<Self, ExactError>

The circle about centre with radius > 0.

pub fn ellipse( centre: Point2, axis: Point2, a: f64, b: f64, ) -> Result<Self, ExactError>

The ellipse about centre with semi-axis a along axis and b across it. axis need not be unit length: the implicit form is scaled by |axis|^2, so no square root or division is needed.

pub fn coefficients(&self) -> &[Dyadic; 6]

The coefficients [A, B, C, D, E, F].

pub fn eval(&self, p: Point2) -> Dyadic

Exact value at an f64 point.

Trait Implementations

impl Clone for Conic

fn clone(&self) -> Conic

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Conic

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

Formats the value using the given formatter.

impl PartialEq for Conic

fn eq(&self, other: &Conic) -> 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 Eq for Conic

impl StructuralPartialEq for Conic