src/Geometry/clipFacetedVolumeByPlanes3d.cc
//------------------------------------------------------------------------------
// Grab the starting vertex for the edge corresponding to the encoded id.
//------------------------------------------------------------------------------
Grab the starting vertex for the edge corresponding to the encoded id.
Grab the starting vertex for the edge corresponding to the encoded id .
inline
int
startVertex(const int id, const vector<pair<int, int>>& edges) {
  return id < 0 ? edges[~id].second : edges[id].first;
}
inline int startVertex ( const int id , const vector < pair < int , int > > & edges ) { return id < 0 ? edges [ ~ id ] . second : edges [ id ] . first ; }
Grab the starting vertex for the edge corresponding to the encoded id.
Grab the starting vertex for the edge corresponding to the encoded id .
// if (id < 0) { //   CHECK(~id < edges.size()); //   return edges[~id].second; // } else { //   CHECK(id < edges.size()); //   return edges[id].first; // }