node-red-contrib-tak-registration/node_modules/@turf/circle/dist/es/index.js

A Node-RED node to register to TAK and to help wrap files as datapackages to send to TAK

import destination from "@turf/destination";
import { polygon, } from "@turf/helpers";
/**
 * Takes a {@link Point} and calculates the circle polygon given a radius in degrees, radians, miles, or kilometers; and steps for precision.
 *
 * @name circle
 * @param {Feature<Point>|number[]} center center point
 * @param {number} radius radius of the circle
 * @param {Object} [options={}] Optional parameters
 * @param {number} [options.steps=64] number of steps
 * @param {string} [options.units='kilometers'] miles, kilometers, degrees, or radians
 * @param {Object} [options.properties={}] properties
 * @returns {Feature<Polygon>} circle polygon
 * @example
 * var center = [-75.343, 39.984];
 * var radius = 5;
 * var options = {steps: 10, units: 'kilometers', properties: {foo: 'bar'}};
 * var circle = turf.circle(center, radius, options);
 *
 * //addToMap
 * var addToMap = [turf.point(center), circle]
 */
function circle(center, radius, options) {
    if (options === void 0) { options = {}; }
    // default params
    var steps = options.steps || 64;
    var properties = options.properties
        ? options.properties
        : !Array.isArray(center) && center.type === "Feature" && center.properties
            ? center.properties
            : {};
    // main
    var coordinates = [];
    for (var i = 0; i < steps; i++) {
        coordinates.push(destination(center, radius, (i * -360) / steps, options).geometry
            .coordinates);
    }
    coordinates.push(coordinates[0]);
    return polygon([coordinates], properties);
}
export default circle;