A small module to generate a random point on a polygon in O(n) time.
npm install random-point-in-polygon
Valid inputs: An array of polygon coordinates
const generateRandomPoint = require('random-point-in-polygon')
const poly = {type: 'Polygon', coordinates: [[[0, 5], [0, 0], [15, 0], [1, 0.5], [0, 5]]]}
const p = generateRandomPoint(poly.coordinates[0])
//returns p = [0.5, 0.25]Optionally, if you already know the index of a convex vertice, you can pass this in as an argument, this will help speed up the calculation.
const generateRandomPoint = require('random-point-in-polygon')
generateRandomPoint(someBigPolygon.coordinates[0], 700)- Only works on polygons without holes.
// Switzerland
randomPointInPolygon x 99,601 ops/sec ±1.59% (91 runs sampled)
turf point-on-feature x 69,499 ops/sec ±0.81% (90 runs sampled)
// Switzerland with identified convex vertice
randomPointInPolygon x 157,610 ops/sec ±1.59% (91 runs sampled)
turf point-on-feature x 69,499 ops/sec ±0.81% (90 runs sampled)
// Spike case
// randomPointInPolygon x 1,607,054 ops/sec ±1.00% (82 runs sampled)
// turf point-on-feature x 430,476 ops/sec ±0.68% (89 runs sampled)
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