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
77 lines (76 loc) • 2.89 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var clean_coords_1 = __importDefault(require("@turf/clean-coords"));
var line_segment_1 = __importDefault(require("@turf/line-segment"));
var rhumb_bearing_1 = __importDefault(require("@turf/rhumb-bearing"));
var helpers_1 = require("@turf/helpers");
/**
* Boolean-Parallel returns True if each segment of `line1` is parallel to the correspondent segment of `line2`
*
* @name booleanParallel
* @param {Geometry|Feature<LineString>} line1 GeoJSON Feature or Geometry
* @param {Geometry|Feature<LineString>} line2 GeoJSON Feature or Geometry
* @returns {boolean} true/false if the lines are parallel
* @example
* var line1 = turf.lineString([[0, 0], [0, 1]]);
* var line2 = turf.lineString([[1, 0], [1, 1]]);
*
* turf.booleanParallel(line1, line2);
* //=true
*/
function booleanParallel(line1, line2) {
// validation
if (!line1)
throw new Error("line1 is required");
if (!line2)
throw new Error("line2 is required");
var type1 = getType(line1, "line1");
if (type1 !== "LineString")
throw new Error("line1 must be a LineString");
var type2 = getType(line2, "line2");
if (type2 !== "LineString")
throw new Error("line2 must be a LineString");
var segments1 = line_segment_1.default(clean_coords_1.default(line1)).features;
var segments2 = line_segment_1.default(clean_coords_1.default(line2)).features;
for (var i = 0; i < segments1.length; i++) {
var segment1 = segments1[i].geometry.coordinates;
if (!segments2[i])
break;
var segment2 = segments2[i].geometry.coordinates;
if (!isParallel(segment1, segment2))
return false;
}
return true;
}
/**
* Compares slopes and return result
*
* @private
* @param {Geometry|Feature<LineString>} segment1 Geometry or Feature
* @param {Geometry|Feature<LineString>} segment2 Geometry or Feature
* @returns {boolean} if slopes are equal
*/
function isParallel(segment1, segment2) {
var slope1 = helpers_1.bearingToAzimuth(rhumb_bearing_1.default(segment1[0], segment1[1]));
var slope2 = helpers_1.bearingToAzimuth(rhumb_bearing_1.default(segment2[0], segment2[1]));
return slope1 === slope2;
}
/**
* Returns Feature's type
*
* @private
* @param {Geometry|Feature<any>} geojson Geometry or Feature
* @param {string} name of the variable
* @returns {string} Feature's type
*/
function getType(geojson, name) {
if (geojson.geometry && geojson.geometry.type)
return geojson.geometry.type;
if (geojson.type)
return geojson.type; // if GeoJSON geometry
throw new Error("Invalid GeoJSON object for " + name);
}
exports.default = booleanParallel;