closestPoint.h

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// Gmsh - Copyright (C) 1997-2022 C. Geuzaine, J.-F. Remacle
//
// See the LICENSE.txt file in the Gmsh root directory for license information.
// Please report all issues on https://gitlab.onelab.info/gmsh/gmsh/issues.
 
#ifndef CLOSEST_POINT_H
#define CLOSEST_POINT_H
 
#include "GmshConfig.h"
 
#if defined(HAVE_ANN)
#include "ANN/ANN.h"
#endif
 
#include "SPoint3.h"
 
class GEntity;
class closestPointFinder {
#if defined(HAVE_ANN)
  ANNkd_tree *kdtree;
  ANNpointArray zeronodes;
  ANNidxArray index;
  ANNdistArray dist;
#endif
  double _tolerance;
 
public:
  closestPointFinder(GEntity *, double);
  ~closestPointFinder();
  SPoint3 operator()(const SPoint3 &p);
  inline double tol() const { return _tolerance; }
};
 
#endif