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
55 lines • 2.02 kB
JavaScript
// index.ts
import { segmentEach } from "@turf/meta";
import { getGeom } from "@turf/invariant";
import { lineOverlap } from "@turf/line-overlap";
import { lineIntersect } from "@turf/line-intersect";
import { geojsonEquality } from "geojson-equality-ts";
function booleanOverlap(feature1, feature2) {
const geom1 = getGeom(feature1);
const geom2 = getGeom(feature2);
const type1 = geom1.type;
const type2 = geom2.type;
if (type1 === "MultiPoint" && type2 !== "MultiPoint" || (type1 === "LineString" || type1 === "MultiLineString") && type2 !== "LineString" && type2 !== "MultiLineString" || (type1 === "Polygon" || type1 === "MultiPolygon") && type2 !== "Polygon" && type2 !== "MultiPolygon") {
throw new Error("features must be of the same type");
}
if (type1 === "Point") throw new Error("Point geometry not supported");
if (geojsonEquality(feature1, feature2, { precision: 6 }))
return false;
let overlap = 0;
switch (type1) {
case "MultiPoint":
for (var i = 0; i < geom1.coordinates.length; i++) {
for (var j = 0; j < geom2.coordinates.length; j++) {
var coord1 = geom1.coordinates[i];
var coord2 = geom2.coordinates[j];
if (coord1[0] === coord2[0] && coord1[1] === coord2[1]) {
return true;
}
}
}
return false;
case "LineString":
case "MultiLineString":
segmentEach(feature1, (segment1) => {
segmentEach(feature2, (segment2) => {
if (lineOverlap(segment1, segment2).features.length) overlap++;
});
});
break;
case "Polygon":
case "MultiPolygon":
segmentEach(feature1, (segment1) => {
segmentEach(feature2, (segment2) => {
if (lineIntersect(segment1, segment2).features.length) overlap++;
});
});
break;
}
return overlap > 0;
}
var turf_boolean_overlap_default = booleanOverlap;
export {
booleanOverlap,
turf_boolean_overlap_default as default
};
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