Struct PolygonCapacity

pub struct PolygonCapacity { /* private fields */ }

A counter for the buffer sizes of a PolygonArray.

This can be used to reduce allocations by allocating once for exactly the array size you need.

Implementations

impl PolygonCapacity

pub fn new( coord_capacity: usize, ring_capacity: usize, geom_capacity: usize, ) -> Self

Create a new capacity with known sizes.

pub fn new_empty() -> Self

Create a new empty capacity.

pub fn is_empty(&self) -> bool

Return true if the capacity is empty.

pub fn coord_capacity(&self) -> usize

The coordinate buffer capacity

pub fn ring_capacity(&self) -> usize

The ring offset buffer capacity

pub fn geom_capacity(&self) -> usize

The geometry offset buffer capacity

pub fn add_polygon<'a>(&mut self, polygon: Option<&'a (impl PolygonTrait + 'a)>)

Add the capacity of the given Polygon

pub fn add_rect<'a>(&mut self, rect: Option<&'a (impl RectTrait + 'a)>)

Add the capacity of the given Rect

pub fn add_geometry( &mut self, value: Option<&impl GeometryTrait>, ) -> GeoArrowResult<()>

Add the capacity of the given Geometry

The type of the geometry must be either Polygon or Rect

pub fn from_polygons<'a>( geoms: impl Iterator<Item = Option<&'a (impl PolygonTrait + 'a)>>, ) -> Self

Construct a new counter pre-filled with the given Polygons

pub fn from_rects<'a>( geoms: impl Iterator<Item = Option<&'a (impl RectTrait + 'a)>>, ) -> Self

Construct a new counter pre-filled with the given Rects

pub fn from_geometries<'a>( geoms: impl Iterator<Item = Option<&'a (impl GeometryTrait + 'a)>>, ) -> GeoArrowResult<Self>

Construct a new counter pre-filled with the given geometries

pub fn num_bytes(&self) -> usize

The number of bytes an array with this capacity would occupy.

Trait Implementations

impl Add for PolygonCapacity

type Output = PolygonCapacity

The resulting type after applying the + operator.

fn add(self, rhs: Self) -> Self::Output

Performs the + operation.

impl AddAssign<PolygonCapacity> for MultiPolygonCapacity

fn add_assign(&mut self, rhs: PolygonCapacity)

Performs the += operation.

impl Clone for PolygonCapacity

fn clone(&self) -> PolygonCapacity

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PolygonCapacity

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

Formats the value using the given formatter.

impl Default for PolygonCapacity

fn default() -> Self

Returns the “default value” for a type.

impl Copy for PolygonCapacity