Method selectedArc

graph_view.cpp:230–232

}

MyGraphicsLineItem* MyGraphicsView::selectedArc(){
    return selItem ? (selItem->type() == QGraphicsItem::UserType + 2 ? (MyGraphicsLineItem*)selItem : nullptr) : nullptr;
}

void MyGraphicsView::RemoveVex(MyGraphicsVexItem *vex){
    vexes.erase(vexes.begin() + vexes.indexOf(vex));