test if polygon is clockwise
MIT License
Returns true if the sum of signed distances is greater than zero, which can be used as a quick test for convex polygon orientation.
var isClockwise = require('is-clockwise')
var points = [ [0, 0], [1, 1], [1, 0], [0, 0] ]
var cw = isClockwise(points)
console.log(cw) // true
See robust-orientation for a stronger test that handles floating point errors and other edge cases.
isClockwise(points)
Returns true if the points are clockwise, false if counter-clockwise. Assuming cartesian space.
MIT, see LICENSE.md for details.