calculate the intersection of two great circle arcs
npm install intersect-great-circlecalculate the intersection of two great circle arcs
if there is no intersection, return null
algorithm based on https://www.edwilliams.org/intersect.htm
`` js
var intersect = require('intersect-great-circle')
var seattle = [-122.33,+47.61]
var chicago = [-87.65,+41.85]
var denver = [-104.98,+39.74]
var calgary = [-114.09,+51.05]
console.log(intersect([],seattle,chicago,denver,calgary))
`
output:
`
[ -110.25059713305886, 46.91934833795278 ]
`
var intersect = require('great-circle-intersect')
Calculate the intersection of 2 arcs defined by the points A, B, C, and D,out
storing the result in .
The first arc is defined by points A and B. The second arc is defined by points C and D.
Each point is a 2-element array [lon,lat] in decimal degrees.
If there is no intersection, returns null. Otherwise returns out.
Optionally provide an epsilon` to control tolerance for rounding errors to decide when there is an
intersection.
npm install great-circle-intersect
bsd