def _generateSpecial_Volume3DOpts_clipPlane(
        overlayList, displayCtx, source, longArg):
    """Generates arguemnts for the ``Volume3DOpts.clipPlane`` option. """

    args = []

    for i in range(source.numClipPlanes):
        args += [longArg,
                 '{:0.3f}'.format(source.clipPosition[   i]),
                 '{:0.3f}'.format(source.clipAzimuth[    i]),
                 '{:0.3f}'.format(source.clipInclination[i])]

    return args