robust-segment-intersect
========================
Exact arithmetic predicate to determine if two closed linesegments intersect.



Example

``javascript

var crosses = require("robust-segment-intersect")

var a0 = [-1, 0]
var a1 = [ 1, 0]
var b0 = [ 0,-1]
var b1 = [ 0, 1]

//Check if line segment a0, a1 crosses segment b0, b1
console.log(crosses(a0, a1, b0, b1))
`

Install

`
npm install robust-segment-intersect
`

API

#### require("robust-segment-intersect")(a0, a1, b0, b1)
Tests if the closed line segment [a0,a1] intersects the closed line segment [b0,b1].

* a0, a1 are the end points of the first line segment encoded as length 2 arrays
* b0, b1 are the end points of the second line segment encoded again as length 2 arrays

Returns true` if the linesegments intersect, false otherwise

Credits

(c) 2014 Mikola Lysenko. MIT License