def METHOD_NAME(triangles, vts_values):
    """Change from values per vertex to values per triangle
    Parameters
    ----------
    triangles : [n, 3] -> m array
        A list of triangles from a mesh
    vts_values : [m, .] array
        List of values to interpolates from coordinates along vertices,
        (vertices, vertices_normal, vertices_colors ...)
    Returns
    -------
    triangles_values : [m] array
        List of values for each triangle in the mesh
    See Also
    --------
    random_coordinates_from_surface
    """
    return np.mean(vts_values[triangles], axis=1)