NX二次开发获取组件实体

最新推荐文章于 2025-06-26 17:18:08 发布

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本文介绍了一种在NX软件中从装配组件中提取所有实体的方法，包括当前装配组件下的所有实体和原先零件上的实体。通过使用UF_ASSEM_cycle_objs_in_comp等函数遍历装配组件，以及UF_OBJ_cycle_objs_in_part遍历原型零件，实现对实体的全面检索。

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1.获取装配现在组件上的所有实体：

NXObject* ToNXObj(tag_t obj)
{
    if (obj == NULL_TAG)
    {
        return NULL;
    }
    return dynamic_cast<NXObject*>(ToTagObj(obj));
}



//单个装配组件下所有的实体
vector<tag_t> GetComponentBodies(Assemblies::Component* component)
{    
    vector<tag_t> bodies;

    tag_t compTag = component->Tag();
    tag_t member = NULL_TAG;
    UF_ASSEM_cycle_objs_in_comp(compTag, &member);

    while (member != NULL_TAG)
    {
        int type = 0, subType = 0;
        UF_OBJ_ask_type_and_subtype(member, &type, &subType);
        if (type == 70 && subType == 0)
        {
            bodies.push_back(member);
        }
        UF_ASSEM_cycle_objs_in_comp(compTag, &member);
    }

    return bodies;

}

vector<tag_t> GetAssemBodies()
{
    vector<tag_t> bodies;

    Part* workPart = Session::GetSession()->Parts()->Work();
    tag_t workTag = workPart->Tag();
    tag_t root = UF_ASSEM_ask_root_part_occ(workTag);

    tag_t* child_part_occs;
    int part_num = UF_ASSEM_ask_part_occ_children(root, &child_part_occs);
    for (int i = 0; i < part_num; i++)
    {
        Assemblies::Component* component = dynamic_cast<Assemblies::Component*>(ToNXObj(child_part_occs[i]));
        vector<tag_t>tmpBodies = GetComponentBodies(component);

        for (auto item : tmpBodies)
        {
            bodies.push_back(item);
        }
    }

    return bodies;
}

2.获取装配原先零件上的所有实体：

vector<tag_t> GetComponentOriginPartBodies()
{
    vector<tag_t> allBodies;

    Part* workPart = Session::GetSession()->Parts()->Work();
    tag_t workTag = workPart->Tag();

    tag_t root = UF_ASSEM_ask_root_part_occ(workTag);
    tag_t *child_components = NULL;
    int component_count = UF_ASSEM_ask_part_occ_children(root, &child_components);
    for (int i = 0; i < component_count; i++)
    {
        tag_t prototype = UF_ASSEM_ask_prototype_of_occ(child_components[i]);
        tag_t objTag = NULL_TAG;
        while (true)
        {
            UF_OBJ_cycle_objs_in_part(prototype, UF_solid_type, &objTag);
            if (objTag == NULL_TAG)
            {
                break;
            }
            else
            {
                int type = 0, subType = 0;
                UF_OBJ_ask_type_and_subtype(objTag, &type, &subType);
                if (type == 70 && subType == 0)
                {
                    allBodies.push_back(objTag);
                }

            }
        }
    }

    return allBodies;
}