Trait GeometryCollectionTrait

pub trait GeometryCollectionTrait: Sized + GeometryTrait {
    type GeometryType<'a>: 'a + GeometryTrait<T = Self::T>
       where Self: 'a;

    // Required methods
    fn num_geometries(&self) -> usize;
    unsafe fn geometry_unchecked(&self, i: usize) -> Self::GeometryType<'_>;

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

A trait for accessing data from a generic GeometryCollection.

A GeometryCollection is a collection of Geometry types.

Required Associated Types

type GeometryType<'a>: 'a + GeometryTrait<T = Self::T> where Self: 'a

The type of each underlying geometry, which implements GeometryTrait

Required Methods

fn num_geometries(&self) -> usize

The number of geometries in this GeometryCollection

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

Access to a specified geometry in this GeometryCollection

Safety

Accessing an index out of bounds is UB.

Provided Methods

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

An iterator over the geometries in this GeometryCollection

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

Access to a specified geometry in this GeometryCollection 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> GeometryCollectionTrait for &'a GeometryCollection<T>

type GeometryType<'b> = &'a Geometry<<&'a GeometryCollection<T> as GeometryTrait>::T> where Self: 'b

fn num_geometries(&self) -> usize

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

impl<T: CoordNum> GeometryCollectionTrait for GeometryCollection<T>

type GeometryType<'a> = &'a Geometry<<GeometryCollection<T> as GeometryTrait>::T> where Self: 'a

fn num_geometries(&self) -> usize

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

Implementors

impl<T> GeometryCollectionTrait for UnimplementedGeometryCollection<T>

type GeometryType<'a> = UnimplementedGeometry<<UnimplementedGeometryCollection<T> as GeometryTrait>::T> where Self: 'a