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

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

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-360\n      : origin[0] - destination[0] > 180\n        ? 360\n        : 0;\n  const distanceInMeters = calculateRhumbDistance(origin, destination);\n  const distance = convertLength(distanceInMeters, \"meters\", options.units);\n  return distance;\n}\n\n/**\n * Returns the distance travelling from ‘this’ point to destination point along a rhumb line.\n * Adapted from Geodesy: https://github.com/chrisveness/geodesy/blob/master/latlon-spherical.js\n *\n * @private\n * @param   {Array<number>} origin point.\n * @param   {Array<number>} destination point.\n * @param   {number} [radius=6371e3] - (Mean) radius of earth (defaults to radius in metres).\n * @returns {number} Distance in km between this point and destination point (same units as radius).\n *\n * @example\n *     var p1 = new LatLon(51.127, 1.338);\n *     var p2 = new LatLon(50.964, 1.853);\n *     var d = p1.distanceTo(p2); // 40.31 km\n */\nfunction calculateRhumbDistance(\n  origin: number[],\n  destination: number[],\n  radius?: number\n) {\n  // φ => phi\n  // λ => lambda\n  // ψ => psi\n  // Δ => Delta\n  // δ => delta\n  // θ => theta\n\n  radius = radius === undefined ? earthRadius : Number(radius);\n  // see www.edwilliams.org/avform.htm#Rhumb\n\n  const R = radius;\n  const phi1 = (origin[1] * Math.PI) / 180;\n  const phi2 = (destination[1] * Math.PI) / 180;\n  const DeltaPhi = phi2 - phi1;\n  let DeltaLambda = (Math.abs(destination[0] - origin[0]) * Math.PI) / 180;\n  // if dLon over 180° take shorter rhumb line across the anti-meridian:\n  if (DeltaLambda > Math.PI) {\n    DeltaLambda -= 2 * Math.PI;\n  }\n\n  // on Mercator projection, longitude distances shrink by latitude; q is the 'stretch factor'\n  // q becomes ill-conditioned along E-W line (0/0); use empirical tolerance to avoid it\n  const DeltaPsi = Math.log(\n    Math.tan(phi2 / 2 + Math.PI / 4) / Math.tan(phi1 / 2 + Math.PI / 4)\n  );\n  const q = Math.abs(DeltaPsi) > 10e-12 ? DeltaPhi / DeltaPsi : Math.cos(phi1);\n\n  // distance is pythagoras on 'stretched' Mercator projection\n  const delta = Math.sqrt(\n    DeltaPhi * DeltaPhi + q * q * DeltaLambda * DeltaLambda\n  ); // angular distance in radians\n  const dist = delta * R;\n\n  return dist;\n}\n\nexport { rhumbDistance };\nexport default rhumbDistance;\n"]}