约束

def get_object_by_name(name, namespace=''):
    component_list = pyfbsdk.FBComponentList()
    pyfbsdk.FBFindObjectsByName(name, component_list, True, False)
    pyfbsdk.FBFindObjectsByName(name, component_list, False, False)
    component_list = set(component_list)
    if namespace:
        component_list = [i for i in component_list if (namespace + ':') in i.FullName]
    return list(component_list)


def create_parent_constraint(name='constraint', source_list=[], target='', namespace=''):
    constraint = pyfbsdk.FBConstraintManager().TypeCreateConstraint('Parent/Child')
    constraint.Name = name
    target_node = get_object_by_name(target, namespace=namespace)
    if target_node:
        constraint.ReferenceAdd(0, target_node[0])
    for source in source_list:
        for i in get_object_by_name(source, namespace=namespace):
            constraint.ReferenceAdd(1, i)
    constraint.Active = True
    return constraint
    
def create_ik_constraint(namespace=''):
    """
    创建基本的IK约束，如果有有不完整的则删除
    Returns:

    """
    ik_constraint_list = ['IK_Hd_2_HdSk_L', 'IK_Hd_2_HdSk_R',
                          'IK_Ft_2_FtSk_L', 'IK_Ft_2_FtSk_R',
                          'IK_Hd_2_gun']
    _delete = False
    for ik_constraint in ik_constraint_list:
        if ik_constraint not in [i.Name for i in
                                 pyfbsdk.FBSystem().Scene.Constraints]:
            _delete = True
            break
    if _delete:
        for ik_constraint in ik_constraint_list:
            componentList = get_object_by_name(ik_constraint,
                                               namespace=namespace)
            for i in componentList:
                if type(i) == pyfbsdk.FBConstraint:
                    pyfbsdk.FBComponent.FBDelete(i)
    ik_constraint_list = [['IK_Hd_2_HdSk_L', 'hand_l', 'ik_hand_l'],
                     ['IK_Hd_2_HdSk_R', 'hand_r', 'ik_hand_r'],
                     ['IK_Ft_2_FtSk_L', 'foot_l', 'ik_foot_l'],
                     ['IK_Ft_2_FtSk_R', 'foot_r', 'ik_foot_r'],
                     ['IK_Hd_2_gun', 'hand_r', 'ik_hand_gun']]
    for constraint_data in ik_constraint_list:
        constraint_name, bone, ik_bone = constraint_data
        create_parent_constraint(constraint_name, [bone], ik_bone, namespace)
create_ik_constraint()