public static IVertex lerp(IVertex start, IVertex end, float delta) { return(new IVertex() { position = Int3.lerp(start.position, end.position, delta), normal = Float3.lerp(start.normal, end.normal, delta), color = start.color.lerpTo(end.color, delta), uv = Float2.lerp(start.uv, end.uv, delta), }); }