#ifndef SINGULARITYJUDGER_SINGULARITYJUDGER_H
#define SINGULARITYJUDGER_SINGULARITYJUDGER_H

#include "gauss_map.h"
#include "loop_detector.h"
#include "srf_mesh.h"
#include "tinynurbs/tinynurbs.h"
#include "vector"

using namespace std;
using namespace tinynurbs;

class SingularityJudger {

public:
  SingularityJudger(RationalSurface<real> &srf1_, RationalSurface<real> &srf2_,
                    SrfMesh &mesh1_, SrfMesh &mesh2_);

  double gaussMapTimeCost;

  SrfMesh &mesh1;
  SrfMesh &mesh2;
  // 调用各个工具直接传入mesh信息，避免nurbs曲面的重复采样
  // 但曲面参数信息仍然需要传入，因为C2C4在最小的网格的基础上还需要进一步细分采样
  RationalSurface<real> &srf1;
  RationalSurface<real> &srf2;

  void init();

  // 关注mesh的采样网格中的哪个范围
  // 假设mesh.sampleLevel = 5, 则sampleRange 属于[0, 15];
  bool judge(pair<int, int> focusRange_u1, pair<int, int> focusRange_v1,
             pair<int, int> focusRange_u2, pair<int, int> focusRange_v2);

  // 没有loop detection的版本
  void judge2(pair<int, int> focusRange_u1, pair<int, int> focusRange_v1,
              pair<int, int> focusRange_u2, pair<int, int> focusRange_v2);

  map<pair<int, int>, int>
  judge(const vector<pair<pair<int, int>, pair<int, int>>> &intersectBoxPairs,
        pair<int, int> focusRange_u1, pair<int, int> focusRange_v1,
        pair<int, int> focusRange_u2, pair<int, int> focusRange_v2);

  vector<vector<char>> judgeRes;

private:
  constexpr static int dirs[4][2] = {{-1, 0}, {0, 1}, {1, 0}, {0, -1}};
  GaussMap gaussMap1;
  GaussMap gaussMap2;

  void dfs(set<pair<int, int>> &book,
           vector<vector<pair<int, int>>> &cellGroups,
           const LoopDetector &loopDetector, int i, int x, int y);
};

#endif // SINGULARITYJUDGER_SINGULARITYJUDGER_H