2d-plolygon-contains-polygon

test if a polygon completely contains another polygon

this can useful when computing whether or not a polygon is a hole or island.

This library is not highly optimized, but should suit your needs for the general case. Hit me up if it's not fast enough and I'll see what we can do.

install

npm install 2d-plolygon-contains-polygon

use

var a = [
  [0, 0],
  [100, 0],
  [100, 100],
  [0, 100]
];

var b = [
  [20, 20],
  [80, 20],
  [80, 80],
  [20, 80]
];

console.log(contains(a, b));
// output: true

api surface

contains(container, contained)

container and container are polygons represented by a 2d array (i.e. [[x, y], [x, y], ])

returns true if contained is contained in container, and false otherwise.

license

MIT