strands.py 文件源码

def create_hair_system(nucleus=None):
    '''Create a hair system, add it to the specified nucleus or active nucleus'''

    if not nucleus:
        nucleus = get_nucleus()

    hair_system = cmds.createNode('hairSystem')
    cmds.connectAttr('time1.outTime', hair_system + '.currentTime')
    index = cmds.getAttr(nucleus + '.inputActive', size=True)
    input_active = '{}.inputActive[{}]'.format(nucleus, index)
    input_start = '{}.inputActiveStart[{}]'.format(nucleus, index)
    output_object = '{}.outputObjects[{}]'.format(nucleus, index)
    cmds.setAttr(hair_system + '.active', 1)
    cmds.connectAttr(hair_system + '.currentState', input_active)
    cmds.connectAttr(hair_system + '.startState', input_start)
    cmds.connectAttr(output_object, hair_system + '.nextState')
    cmds.connectAttr(nucleus + '.startFrame', hair_system + '.startFrame')
    return hair_system