unused_node.py 文件源码

def get_unused_shading_engines():
    u"""????ShadingEngine???????

    :return: ????ShadingEngine????
    :rtype: list of unicode
    """
    shading_engines = cmds.ls(type="shadingEngine")

    unused_shading_engines = []
    for s in shading_engines:
        if s in _DEFAULT_SHADING_ENGINES:
            continue
        unused = True
        for c in cmds.listConnections(s):
            node_type = cmds.nodeType(c)
            if "shader" in cmds.getClassification(node_type)[0]:
                unused = False
                break
        if unused:
            unused_shading_engines.append(s)
    return unused_shading_engines