A node.js library helping you to process all rasterized points in any 2D polygon.
- Triangulation is done via earcut
- Points in the resulting triangles are determined using co-project points-in-triangle
- All points in the polygon are iterated and passed to the callback.
- Rendering: Draw any given polygon!
- GIS: Create height maps of 2D shape files!
Install it into your project with
npm install --save points-in-polygon
const pointsInPolygon = require('points-in-polygon');
// Format: [[[outerX,outerY],...],[[innerX,innerY],...],[[innerX,innerY],...]]
let polygon = [
// first element is defining the outer area of the polygon
[[0, 0], [10, 0], [10, 10], [0, 10]],
// following elements will define the inner cut out areas
[[3, 3], [6, 3], [6, 6], [3, 6]],
...
];
// triangulate, rasterize and calculate points inside the polygon
pointsInPolygon(polygon, (x, y) => console.log(x, y));Copyright (c) 2017 Michael Straßburger
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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