node-red-contrib-tak-registration
Version:
A Node-RED node to register to TAK and to help wrap files as datapackages to send to TAK
56 lines (55 loc) • 2.24 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var bearing_1 = __importDefault(require("@turf/bearing"));
var helpers_1 = require("@turf/helpers");
var rhumb_bearing_1 = __importDefault(require("@turf/rhumb-bearing"));
/**
* Finds the angle formed by two adjacent segments defined by 3 points. The result will be the (positive clockwise)
* angle with origin on the `startPoint-midPoint` segment, or its explementary angle if required.
*
* @name angle
* @param {Coord} startPoint Start Point Coordinates
* @param {Coord} midPoint Mid Point Coordinates
* @param {Coord} endPoint End Point Coordinates
* @param {Object} [options={}] Optional parameters
* @param {boolean} [options.explementary=false] Returns the explementary angle instead (360 - angle)
* @param {boolean} [options.mercator=false] if calculations should be performed over Mercator or WGS84 projection
* @returns {number} Angle between the provided points, or its explementary.
* @example
* turf.angle([5, 5], [5, 6], [3, 4]);
* //=45
*/
function angle(startPoint, midPoint, endPoint, options) {
if (options === void 0) { options = {}; }
// Optional Parameters
if (!helpers_1.isObject(options)) {
throw new Error("options is invalid");
}
// Validation
if (!startPoint) {
throw new Error("startPoint is required");
}
if (!midPoint) {
throw new Error("midPoint is required");
}
if (!endPoint) {
throw new Error("endPoint is required");
}
// Rename to shorter variables
var A = startPoint;
var O = midPoint;
var B = endPoint;
// Main
var azimuthAO = helpers_1.bearingToAzimuth(options.mercator !== true ? bearing_1.default(A, O) : rhumb_bearing_1.default(A, O));
var azimuthBO = helpers_1.bearingToAzimuth(options.mercator !== true ? bearing_1.default(B, O) : rhumb_bearing_1.default(B, O));
var angleAO = Math.abs(azimuthAO - azimuthBO);
// Explementary angle
if (options.explementary === true) {
return 360 - angleAO;
}
return angleAO;
}
exports.default = angle;