Struct Ball2 

pub struct Ball2<'a, T = f64> { /* private fields */ }

A Euclidean ball, that is, a set given by $B_2^r = \{x \in \mathbb{R}^n {}:{} \Vert{}x{}\Vert \leq r\}$ or a Euclidean ball centered at a point $x_c$, that is, $B_2^{x_c, r} = \{x \in \mathbb{R}^n {}:{} \Vert{}x-x_c{}\Vert \leq r\}$

Implementations

impl<'a, T: Float> Ball2<'a, T>

pub fn new(center: Option<&'a [T]>, radius: T) -> Self

Construct a new Euclidean ball with given center and radius If no center is given, then it is assumed to be in the origin

Example

use optimization_engine::constraints::{Ball2, Constraint};

let ball = Ball2::new(None, 1.0);
let mut x = [2.0, 0.0];
ball.project(&mut x).unwrap();

Trait Implementations

impl<'a, T: Clone> Clone for Ball2<'a, T>

fn clone(&self) -> Ball2<'a, T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a, T> Constraint<T> for Ball2<'a, T>

where T: Float + Sum<T>,

fn project(&self, x: &mut [T]) -> FunctionCallResult

Projection onto the set, that is,

fn is_convex(&self) -> bool

Returns true if and only if the set is convex

impl<'a, T: Copy> Copy for Ball2<'a, T>