static create( a, b, c ) {

		const face = new Face();

		const e0 = new HalfEdge( a, face );
		const e1 = new HalfEdge( b, face );
		const e2 = new HalfEdge( c, face );

		// join edges

		e0.next = e2.prev = e1;
		e1.next = e0.prev = e2;
		e2.next = e1.prev = e0;

		// main half edge reference

		face.edge = e0;

		return face.compute();

	}
Creates a face from the given vertex nodes.

@private
@param {VertexNode} a - The first vertex node.
@param {VertexNode} b - The second vertex node.
@param {VertexNode} c - The third vertex node.
@return {Face} The created face.