DGtal  0.9.2
MongeJetFittingPrincipalCurvaturesEstimator.h
1 
17 #pragma once
18 
34 #if defined(MongeJetFittingPrincipalCurvaturesEstimator_RECURSES)
35 #error Recursive header files inclusion detected in MongeJetFittingPrincipalCurvaturesEstimator.h
36 #else // defined(MongeJetFittingPrincipalCurvaturesEstimator_RECURSES)
37 
38 #define MongeJetFittingPrincipalCurvaturesEstimator_RECURSES
39 
40 #if !defined MongeJetFittingPrincipalCurvaturesEstimator_h
41 
42 #define MongeJetFittingPrincipalCurvaturesEstimator_h
43 
45 // Inclusions
46 #include <iostream>
47 #include <DGtal/base/Common.h>
48 #include <DGtal/topology/SCellsFunctors.h>
49 
50 #ifndef WITH_CGAL
51 #error You need to have activated CGAL (WITH_CGAL) to include this file.
52 #endif
53 
54 //CGAL
55 #include <CGAL/Cartesian.h>
56 #include <CGAL/Monge_via_jet_fitting.h>
57 #include <vector>
58 
60 
61 namespace DGtal
62 {
63  namespace functors
64  {
66  // template class MongeJetFittingPrincipalCurvaturesEstimator
76  template <typename TSurfel, typename TEmbedder>
78  {
79  public:
80 
81  typedef TSurfel Surfel;
82  typedef TEmbedder SCellEmbedder;
83  typedef std::pair<double, double> Quantity;
84  typedef typename SCellEmbedder::RealPoint RealPoint;
85 
86  typedef CGAL::Cartesian<double> CGALKernel;
87  typedef CGALKernel::Point_3 CGALPoint;
88  typedef CGAL::Monge_via_jet_fitting<CGALKernel> CGALMongeViaJet;
89  typedef CGALMongeViaJet::Monge_form CGALMongeForm;
90 
91 
99  MongeJetFittingPrincipalCurvaturesEstimator(ConstAlias<SCellEmbedder> anEmbedder, const double h, unsigned int d = 4):
100  myEmbedder(&anEmbedder), myH(h), myD(d)
101  {
102  FATAL_ERROR_MSG(d>=2, "Polynomial surface degree must be greater than 2");
103  }
104 
111  void pushSurfel(const Surfel & aSurf,
112  const double aDistance)
113  {
114  BOOST_VERIFY(aDistance==aDistance);
115 
116  RealPoint p = myEmbedder->operator()(aSurf);
117  CGALPoint pp(p[0]*myH,p[1]*myH,p[2]*myH);
118  myPoints.push_back(pp);
119  }
120 
126  Quantity eval()
127  {
128  CGALMongeForm monge_form;
129  CGALMongeViaJet monge_fit;
130 
131  monge_form = monge_fit(myPoints.begin() , myPoints.end(), myD, (2<myD)? myD : 2);
132 
133  double k1 = monge_form.principal_curvatures ( 0 );
134  double k2 = monge_form.principal_curvatures ( 1 );
135  Quantity result;
136  result.first = k1;
137  result.second = k2;
138  return result;
139  }
140 
145  void reset()
146  {
147  myPoints.clear();
148  }
149 
150 
151  private:
152 
154  const SCellEmbedder * myEmbedder;
155 
157  std::vector<CGALPoint> myPoints;
158 
160  double myH;
161 
163  unsigned int myD;
164 
165 
166  }; // end of class MongeJetFittingPrincipalCurvaturesEstimator
167  }
168 } // namespace DGtal
169 
170 
171 // //
173 
174 #endif // !defined MongeJetFittingPrincipalCurvaturesEstimator_h
175 
176 #undef MongeJetFittingPrincipalCurvaturesEstimator_RECURSES
177 #endif // else defined(MongeJetFittingPrincipalCurvaturesEstimator_RECURSES)
Aim: This class encapsulates its parameter class so that to indicate to the user that the object/poin...
Definition: ConstAlias.h:186
Aim: Estimates Gaussian curvature using CGAL Jet Fitting and Monge Form.
DGtal is the top-level namespace which contains all DGtal functions and types.
MongeJetFittingPrincipalCurvaturesEstimator(ConstAlias< SCellEmbedder > anEmbedder, const double h, unsigned int d=4)