用poly2tri库来完成任意多边形三角化，从而在游戏中转化成刚体和渲染图片

vector<p2t::Point *> HelloWorld::tools_toPoint(vector<CCPoint> temp){vector<p2t::Point *> p2tPoints;for (int i = 0; i < temp.size(); i++){p2tPoints.push_back(new p2t::Point(temp[i].x, temp[i].y));}return p2tPoints;}