Function polygon_area 

pub fn polygon_area<T>(polygon: &ArrayBase<ViewRepr<&T>, Dim<[usize; 2]>>) -> T
where
    T: Float,

Calculate the area of a simple polygon.

Uses the Shoelace formula (also known as the surveyor’s formula).

Arguments

• polygon - The polygon vertices as an array of [x, y] coordinates

Returns

• The area of the polygon

Examples

use scirs2_core::ndarray::array;
use scirs2_spatial::polygon::polygon_area;

// Create a 1x1 square
let square = array![
    [0.0, 0.0],
    [1.0, 0.0],
    [1.0, 1.0],
    [0.0, 1.0],
];

let area: f64 = polygon_area(&square.view());
assert!((area - 1.0).abs() < 1e-10);