Struct ShoelaceMultiPolygonArea 

pub struct ShoelaceMultiPolygonArea;

Cartesian shoelace area for a MultiPolygon — sum of the areas of its member polygons.

Mirrors the dispatch::area<MultiGeometry, multi_polygon_tag> arm at algorithms/area.hpp:175-187, which inherits from detail::multi_sum and delegates the per-polygon work to the same polygon_area used by ShoelacePolygonArea.

Trait Implementations

impl<MPg> AreaStrategy<MPg> for ShoelaceMultiPolygonArea

where MPg: MultiPolygon, ShoelacePolygonArea: AreaStrategy<MPg::ItemPolygon, Out = <MPg::Point as Point>::Scalar>,

type Out = <<MPg as Geometry>::Point as Point>::Scalar

The output scalar type. Typically the geometry’s coordinate scalar. Mirrors area_result<G, Strategies>::type from algorithms/area_result.hpp.

fn area(&self, mpg: &MPg) -> Self::Out

Compute the area of g.

impl Clone for ShoelaceMultiPolygonArea

fn clone(&self) -> ShoelaceMultiPolygonArea

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ShoelaceMultiPolygonArea

impl Debug for ShoelaceMultiPolygonArea

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

Formats the value using the given formatter.

impl Default for ShoelaceMultiPolygonArea

fn default() -> ShoelaceMultiPolygonArea

Returns the “default value” for a type.