c++ vector反转reverse

1. template <class BidirectionalIterator>
2. void reverse ( BidirectionalIterator first, BidirectionalIterator last);

1. 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,
2. BidirectionalIterator last, OutputIterator result );

1. std::reverse(trianglePoints.begin(), trianglePoints.end());