Package Exports

triangle-circle-collision

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Readme

triangle-circle-collision

Detects if a circle collides with or is fully inside of a triangle. This is well suited for 2D canvas games with an upper-left origin.

var collide = require('triangle-circle-collision')

var triangle = [[350,300], [450,450], [350, 450]]
var point = [25, 15],
    radius = 15

//returns true if collision occurs
console.log( collide(triangle, point, radius) )

Usage

`collide(triangle, circle, radius[, clockwise])`

Returns true if the circle intersects a triangle vertex, edge, or if it's fully enclosed by the triangle. This will test the orientation of the triangle assuming a coordinate space like that in HTML5 canvas (upper left).

If the direction is known, you can provide a boolean to clockwise to avoid the additional orientation check.

License

MIT, see LICENSE.md for details.