It's taken from a threejs example: https://github.com/mrdoob/three.js/blob/dev/examples/jsm/objects/Sky.js#L97 https://github.com/mrdoob/three.js/blob/dev/examp

It's taken from a threejs example: https://github.com/mrdoob/three.js/blob/dev/examples/jsm/objects/Sky.js#L97 https://github.com/mrdoob/three.js/blob/dev/examples/jsm/obj... Seems fine given the project is already using threejs and so will have to include license info for it already.