Struct Constraint

pub struct Constraint(/* private fields */);

A constraint, consisting of an equation governed by an expression and a relational operator, and an associated strength.

Implementations

impl Constraint

pub fn new(e: Expression, op: RelationalOperator, strength: f64) -> Constraint

Construct a new constraint from an expression, a relational operator and a strength. This corresponds to the equation e op 0.0, e.g. x + y >= 0.0. For equations with a non-zero right hand side, subtract it from the equation to give a zero right hand side.

pub fn expr(&self) -> &Expression

The expression of the left hand side of the constraint equation.

pub fn op(&self) -> RelationalOperator

The relational operator governing the constraint.

pub fn strength(&self) -> f64

The strength of the constraint that the solver will use.

Trait Implementations

impl Clone for Constraint

fn clone(&self) -> Constraint

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Constraint

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

Formats the value using the given formatter.

impl Hash for Constraint

fn hash<H: Hasher>(&self, hasher: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Constraint

fn eq(&self, other: &Constraint) -> 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 Constraint