Trait MultiPolygonTrait

pub trait MultiPolygonTrait: Sized + GeometryTrait {
    type InnerPolygonType<'a>: 'a + PolygonTrait<T = Self::T>
       where Self: 'a;

    // Required methods
    fn num_polygons(&self) -> usize;
    unsafe fn polygon_unchecked(&self, i: usize) -> Self::InnerPolygonType<'_>;

    // Provided methods
    fn polygons(
        &self,
    ) -> impl DoubleEndedIterator + ExactSizeIterator<Item = Self::InnerPolygonType<'_>> { ... }
    fn polygon(&self, i: usize) -> Option<Self::InnerPolygonType<'_>> { ... }
}

A trait for accessing data from a generic MultiPolygon.

Refer to geo_types::MultiPolygon for information about semantics and validity.

Required Associated Types

type InnerPolygonType<'a>: 'a + PolygonTrait<T = Self::T> where Self: 'a

The type of each underlying Polygon, which implements PolygonTrait

Required Methods

fn num_polygons(&self) -> usize

The number of polygons in this MultiPolygon

unsafe fn polygon_unchecked(&self, i: usize) -> Self::InnerPolygonType<'_>

Access to a specified polygon in this MultiPolygon

Safety

Accessing an index out of bounds is UB.

Provided Methods

fn polygons( &self, ) -> impl DoubleEndedIterator + ExactSizeIterator<Item = Self::InnerPolygonType<'_>>

An iterator over the Polygons in this MultiPolygon

fn polygon(&self, i: usize) -> Option<Self::InnerPolygonType<'_>>

Access to a specified polygon in this MultiPolygon Will return None if the provided index is out of bounds

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<'a, T: CoordNum> MultiPolygonTrait for &'a MultiPolygon<T>

type InnerPolygonType<'b> = &'a Polygon<<&'a MultiPolygon<T> as GeometryTrait>::T> where Self: 'b

fn num_polygons(&self) -> usize

unsafe fn polygon_unchecked(&self, i: usize) -> Self::InnerPolygonType<'_>

impl<T: CoordNum> MultiPolygonTrait for MultiPolygon<T>

type InnerPolygonType<'a> = &'a Polygon<<MultiPolygon<T> as GeometryTrait>::T> where Self: 'a

fn num_polygons(&self) -> usize

unsafe fn polygon_unchecked(&self, i: usize) -> Self::InnerPolygonType<'_>

Implementors

impl<T> MultiPolygonTrait for UnimplementedMultiPolygon<T>

type InnerPolygonType<'a> = UnimplementedPolygon<<UnimplementedMultiPolygon<T> as GeometryTrait>::T> where Self: 'a