@seasketch/geoprocessing/dist/src/toolbox/width.js

Geoprocessing and reporting framework for SeaSketch 2.0

import { bbox, bboxPolygon, explode, distance } from "@turf/turf";
/**
 * Returns the maximum width of the geojson or bbox
 */
export const maxWidth = (geojson) => {
    const box = (() => {
        if (Array.isArray(geojson)) {
            return geojson;
        }
        else {
            return bbox(geojson);
        }
    })();
    const boxPoly = bboxPolygon(box);
    const boxPoints = explode(boxPoly);
    return Math.max(distance(boxPoints.features[0], boxPoints.features[1], {
        units: "degrees",
    }), distance(boxPoints.features[1], boxPoints.features[2], {
        units: "degrees",
    }));
};
/**
 * Returns the minimum width of the bounding box of given feature
 */
export const minWidth = (geojson) => {
    const box = (() => {
        if (Array.isArray(geojson)) {
            return geojson;
        }
        else {
            return bbox(geojson);
        }
    })();
    const boxPoly = bboxPolygon(box);
    const boxPoints = explode(boxPoly);
    return Math.min(distance(boxPoints.features[0], boxPoints.features[1], {
        units: "degrees",
    }), distance(boxPoints.features[1], boxPoints.features[2], {
        units: "degrees",
    }));
};
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