node-red-contrib-tak-registration/node_modules/@turf/rhumb-destination/dist/cjs/index.cjs

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

"use strict";Object.defineProperty(exports, "__esModule", {value: true});// index.ts





var _helpers = require('@turf/helpers');
var _invariant = require('@turf/invariant');
function rhumbDestination(origin, distance, bearing, options = {}) {
  const wasNegativeDistance = distance < 0;
  let distanceInMeters = _helpers.convertLength.call(void 0, 
    Math.abs(distance),
    options.units,
    "meters"
  );
  if (wasNegativeDistance) distanceInMeters = -Math.abs(distanceInMeters);
  const coords = _invariant.getCoord.call(void 0, origin);
  const destination = calculateRhumbDestination(
    coords,
    distanceInMeters,
    bearing
  );
  destination[0] += destination[0] - coords[0] > 180 ? -360 : coords[0] - destination[0] > 180 ? 360 : 0;
  return _helpers.point.call(void 0, destination, options.properties);
}
function calculateRhumbDestination(origin, distance, bearing, radius) {
  radius = radius === void 0 ? _helpers.earthRadius : Number(radius);
  const delta = distance / radius;
  const lambda1 = origin[0] * Math.PI / 180;
  const phi1 = _helpers.degreesToRadians.call(void 0, origin[1]);
  const theta = _helpers.degreesToRadians.call(void 0, bearing);
  const DeltaPhi = delta * Math.cos(theta);
  let phi2 = phi1 + DeltaPhi;
  if (Math.abs(phi2) > Math.PI / 2) {
    phi2 = phi2 > 0 ? Math.PI - phi2 : -Math.PI - phi2;
  }
  const DeltaPsi = Math.log(
    Math.tan(phi2 / 2 + Math.PI / 4) / Math.tan(phi1 / 2 + Math.PI / 4)
  );
  const q = Math.abs(DeltaPsi) > 1e-11 ? DeltaPhi / DeltaPsi : Math.cos(phi1);
  const DeltaLambda = delta * Math.sin(theta) / q;
  const lambda2 = lambda1 + DeltaLambda;
  return [
    (lambda2 * 180 / Math.PI + 540) % 360 - 180,
    phi2 * 180 / Math.PI
  ];
}
var turf_rhumb_destination_default = rhumbDestination;



exports.default = turf_rhumb_destination_default; exports.rhumbDestination = rhumbDestination;
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