lib.py 文件源码

def export_alembic(nodes, file, frame_range=None, uv_write=True):
    """Wrap native MEL command with limited set of arguments

    Arguments:
        nodes (list): Long names of nodes to cache
        file (str): Absolute path to output destination
        frame_range (tuple, optional): Start- and end-frame of cache,
            default to current animation range.
        uv_write (bool, optional): Whether or not to include UVs,
            default to True

    """

    options = [
        ("file", file),
        ("frameRange", "%s %s" % frame_range),
    ] + [("root", mesh) for mesh in nodes]

    if uv_write:
        options.append(("uvWrite", ""))

    if frame_range is None:
        frame_range = (
            cmds.playbackOptions(query=True, ast=True),
            cmds.playbackOptions(query=True, aet=True)
        )

    # Generate MEL command
    mel_args = list()
    for key, value in options:
        mel_args.append("-{0} {1}".format(key, value))

    mel_args_string = " ".join(mel_args)
    mel_cmd = "AbcExport -j \"{0}\"".format(mel_args_string)

    return mel.eval(mel_cmd)