问如何从DrawNode中移除cocos2dx中的颜色点，但不希望从父级中删除removeChild。只要移除其中的一些要点

EN

    auto m_pDrawPoint = DrawNode::create();
    this->addChild(m_pDrawPoint);                   
    for (int i = 0; i < 10; i++)
    {
      m_pDrawPoint->drawPoint(screenP[i], 20, Color4F::GREEN);
      m_points.push_back(screenP[i]);
    }

void Foo::removePoint(const Vec2& point){
    for(int i=0; i<=m_points.size(); i++){
        if(point==m_points[i]){
            //this is a trick
            m_points[i] = m_points[m_points.size()];
            m_points.pop_back();
            break;
        }
    }
    m_pDrawPoint.drawPoints(m_points.data(), m_points.size(),20, Color4F::GREEN);
}

class MyDrawNode: public DrawNode{
public:
    void removePoint(const Vec2& point){
        for(int i=0; i<_bufferCountGLPoint; i++){
            V2F_C4B_T2F *p = (V2F_C4B_T2F*)(_bufferGLPoint + i);
            // point==p->vertices doesn't work as expected sometimes.
            if( (point - p->vertices).lengthSquared() < 0.0001f ){
                *p = _bufferGLPoint + _bufferCountGLPoint - 1;
                _bufferCountGLPoint++;
                break;
            }
        }
    };

};