Method pathUp

gecode/gist/visualnode.cpp:127–133

  }

  void VisualNode::pathUp(const NodeAllocator& na) {
    VisualNode* cur = this;
    while (cur) {
      cur->setOnPath(true);
      cur = cur->getParent(na);
    }
  }

  void VisualNode::unPathUp(const NodeAllocator& na) {
    VisualNode* cur = this;