Struct Region 

pub struct Region {
    pub loops: Vec<Loop>,
}

A planar region: oriented loops under the positive-winding rule.

Fields

loops: Vec<Loop>

Implementations

impl Region

pub fn new(loops: Vec<Loop>, tol: &Tolerance) -> Result<Self, PlanarError>

A region from already oriented loops (outer CCW, holes CW), validated.

pub fn from_unoriented( loops: Vec<Loop>, tol: &Tolerance, ) -> Result<Self, PlanarError>

A region from loops of unknown orientation, assuming they do not cross: each loop is oriented by its nesting depth (even depth outer, odd hole).

pub fn empty() -> Self

pub fn is_empty(&self) -> bool

pub fn area(&self) -> f64

pub fn bounds(&self) -> (Point2, Point2)

pub fn canonical_segments(&self, tol: &Tolerance) -> Vec<Segment>

Every segment of every loop in canonical form.

pub fn winding(&self, p: Point2, tol: &Tolerance) -> i32

Winding number of p; positive inside.

pub fn contains(&self, p: Point2, tol: &Tolerance) -> bool

pub fn nearest_boundary(&self, p: Point2) -> Option<(Point2, f64)>

Nearest boundary point to p and the distance to it.

pub fn signed_distance(&self, p: Point2, tol: &Tolerance) -> f64

Signed distance: positive inside, negative outside, zero on the boundary.

pub fn shells(&self, tol: &Tolerance) -> Vec<Shell>

Group loops into outer loops with their holes. Loops are assumed not to cross (true for every operation output). An island inside a hole is its own shell.

pub fn offset( &self, distance: f64, tol: &Tolerance, ) -> Result<Region, PlanarError>

Offset by distance: positive grows the region, negative shrinks it.

pub fn union( &self, other: &Region, tol: &Tolerance, ) -> Result<Region, PlanarError>

pub fn difference( &self, other: &Region, tol: &Tolerance, ) -> Result<Region, PlanarError>

pub fn intersection( &self, other: &Region, tol: &Tolerance, ) -> Result<Region, PlanarError>

pub fn to_polylines(&self, tol: f64) -> Vec<Vec<Point2>>

Chord loops at tol, for consumers that take polylines (e.g. crate::model::Containment::boundary).

Trait Implementations

impl Clone for Region

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Region

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

Formats the value using the given formatter.

impl Default for Region

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Region

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Region

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Region

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 Region