point-in-triangle
Test whether a point is inside a triangle, using barycentric coordinates and this algorithm from BlackPawn.
var inside = require('point-in-triangle')
var triangle = [ [25, 10], [100, 250], [40, 40] ]
console.log(inside([25, 25], triangle))
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Usage
inside(point, triangle)
Returns true if the point [x, y]
is inside the triangle [ [x1,y1], [x2,y2], [x3,y3] ]
, false otherwise.
License
MIT, see LICENSE.md for details.