C++ (Cpp) TLeafList::emptyの例

コード例 #1

AABB2 SoccerBase::GetAgentBoundingRect(const Leaf& base)
{
    AABB2 boundingRect;

    boost::shared_ptr<Space> parent = base.FindParentSupportingClass<Space>().lock();

    if (!parent)
    {
        base.GetLog()->Error()
                << "(GetAgentBoundingBox) ERROR: can't get parent node.\n";
        return boundingRect;
    }

    /* We can't simply use the GetWorldBoundingBox of the space node, becuase
     * (at least currently) it'll return a wrong answer. Currently, the space
     * object is always at (0,0,0) which is encapsulated in the result of it's
     * GetWorldBoundingBox method call.
     */

    Leaf::TLeafList baseNodes;
    parent->ListChildrenSupportingClass<Collider>(baseNodes,true);

    if (baseNodes.empty())
        {
            base.GetLog()->Error()
                    << "(GetAgentBoundingBox) ERROR: space object doesn't have any"
                    << " children of type BaseNode.\n";
        }

    for (Leaf::TLeafList::iterator i = baseNodes.begin(); i!= baseNodes.end(); ++i)
    {
        boost::shared_ptr<BaseNode> node = shared_static_cast<BaseNode>(*i);
        const AABB3 &box = node->GetWorldBoundingBox();
        boundingRect.Encapsulate(box.minVec.x(), box.minVec.y());
        boundingRect.Encapsulate(box.maxVec.x(), box.maxVec.y());
    }

    return boundingRect;
}