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))

You may also be interested in:

• triangle-circle-collision
• line-circle-collision
• point-circle-collision
• is-clockwise

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.