Variable earcutConst Advanced

Type declaration

• • (
        vertices: ArrayLike<number>,
        holes?: ArrayLike<number>,
        dimensions?: number,
    ): number[]

  • Triangulate an outline.

    Parameters

    • vertices: ArrayLike<number>

      A flat array of vertice coordinates like [x0,y0, x1,y1, x2,y2, ...].
    • Optionalholes: ArrayLike<number>

      An array of hole indices if any (e.g. [5, 8] for a 12-vertice input would mean one hole with vertices 5–7 and another with 8–11).
    • Optionaldimensions: number

      The number of coordinates per vertice in the input array (2 by default).

    Returns number[]

    A flat array with each group of three numbers indexing a triangle in the vertices array.

    Example

    earcut([10,0, 0,50, 60,60, 70,10]); // returns [1,0,3, 3,2,1]
    Copy

    Example

    with a hole: earcut([0,0, 100,0, 100,100, 0,100,  20,20, 80,20, 80,80, 20,80], [4]); // [3,0,4, 5,4,0, 3,4,7, 5,0,1, 2,3,7, 6,5,1, 2,7,6, 6,1,2]
    Copy

    Example

    with 3d coords: earcut([10,0,1, 0,50,2, 60,60,3, 70,10,4], null, 3); // [1,0,3, 3,2,1]
    Copy