line-segment-intersect-2d

determine whether two line segments intersect in 2d and calculate the intersection point

use robust-segment-intersect for a numerically stable intersection test (but does not compute the intersection point) or segseg for a similar routine as an ES module (line-segment-intersect is commonjs).

example

var intersect = require('line-segment-intersect-2d')
console.log(intersect([],[1,1],[2,2],[3,0],[0,5])) // [1.875,1.875]
console.log(intersect([],[-3,5],[-1,0],[-1,4],[-3,-1])) // [-1.8,2]
console.log(intersect([],[4,5],[-3,3],[1,3],[3,1])) // null

api

var intersect = require('line-segment-intersect-2d')

intersect(out, a0, a1, b0, b1)

Returns out and sets out to the intersection point when the 2 line segments described by the 2-element arrays for points a0, a1 and b0, b1 intersect.

Returns null when there is no intersection.

install

npm install line-segment-intersect-2d

license

bsd