VectorSimplification.cpp

Go to the documentation of this file.

#include <VectorSimplification.h>
 
ttk::VectorSimplification::VectorSimplification() {
  this->setDebugMsgPrefix("VectorSimplification");
}
 
void ttk::VectorSimplification::displayStats(
  const std::vector<CandidatePair> &pairs,
  const std::array<std::vector<SimplexId>, 4> &criticalCellsByDim,
  const std::vector<bool> &pairedMinima,
  const std::vector<bool> &paired1Saddles,
  const std::vector<bool> &paired2Saddles,
  const std::vector<bool> &pairedMaxima) const {
 
  const auto dim = this->dcvf_.getDimensionality();
 
  // display number of pairs per pair type
  std::vector<std::vector<std::string>> rows{
    {" #Min-saddle pairs",
     std::to_string(
       std::count_if(pairs.begin(), pairs.end(),
                     [](const CandidatePair &a) { return a.type == 0; }))},
    {" #Saddle-saddle pairs",
     std::to_string(dim == 3 ? std::count_if(
                      pairs.begin(), pairs.end(),
                      [](const CandidatePair &a) { return a.type == 1; })
                             : 0)},
    {" #Saddle-max pairs",
     std::to_string(std::count_if(
       pairs.begin(), pairs.end(),
       [dim](const CandidatePair &a) { return a.type == dim - 1; }))},
  };
 
  // display number of critical cells (paired and unpaired)
  std::vector<size_t> nCritCells(dim + 1);
  std::vector<size_t> nNonPairedCritCells(dim + 1);
 
  for(int i = 0; i < dim + 1; ++i) {
    nCritCells[i] = criticalCellsByDim[i].size();
    size_t nNonPaired{};
    for(size_t j = 0; j < criticalCellsByDim[i].size(); ++j) {
      const auto cell = criticalCellsByDim[i][j];
      if((i == 0 && !pairedMinima[cell]) || (i == 1 && !paired1Saddles[cell])
         || (i == 2 && dim == 3 && !paired2Saddles[cell])
         || (i == dim && !pairedMaxima[cell])) {
        nNonPaired++;
      }
    }
    nNonPairedCritCells[i] = nNonPaired;
  }
 
  std::vector<std::string> critCellsLabels{"Minima"};
  if(dim >= 2) {
    critCellsLabels.emplace_back("1-saddles");
  }
  if(dim >= 3) {
    critCellsLabels.emplace_back("2-saddles");
  }
  critCellsLabels.emplace_back("Maxima");
 
  for(int i = 0; i < dim + 1; ++i) {
    const std::string unpaired{nNonPairedCritCells[i] == 0
                                 ? " (all paired)"
                                 : " (" + std::to_string(nNonPairedCritCells[i])
                                     + " unpaired)"};
 
    rows.emplace_back(std::vector<std::string>{
      " #" + critCellsLabels[i], std::to_string(nCritCells[i]) + unpaired});
  }
  this->printMsg(rows, debug::Priority::DETAIL);
}