- template <class BidirectionalIterator>
- void reverse ( BidirectionalIterator first, BidirectionalIterator last);
- 如果不是改变原来的容器，而是翻转之后放在新容器里面，直接用reverse_copy ( BidirectionalIterator first,
- BidirectionalIterator last, OutputIterator result );
- std::reverse(trianglePoints.begin(), trianglePoints.end());