template <class vector> struct HeadLocation{ vector x; vector y; }; vector<HeadLocation<int> > gt_loc_; //二维vector容器 void ReadLocationFromTextFile(const string filename) { cout << "Opening file " << filename << endl; ifstream infile(filename.c_str()); if (!infile){ printf("不存在此文本文件!"); }; int num_crowd; infile >> num_crowd; if (num_crowd <= 0){ cout << "Number of crowd must be positive!\n"; }; gt_loc_.clear(); //size = 0, capicity =? gt_loc_.resize(num_crowd); //size = num_crowd(行) for (int i = 0; i < num_crowd; i++) { /*HeadLocation<float> location_t; HeadLocation<int> location(location_t.begin(), location_t.end());*/ HeadLocation<int> location; infile >> location.x >> location.y; for (int j = 0; j < 3; ++j) { location.x = (location.x - 1) / 2; location.y = (location.y - 1) / 2; } gt_loc_[i] = location; } infile.close(); // 关闭文件 }
原文地址:https://www.cnblogs.com/byteHuang/p/8378657.html
时间: 2024-11-10 15:04:17