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vpMomentArea.cpp
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19  * Inria Rennes - Bretagne Atlantique
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28  * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
29  *
30  * Description:
31  * 2D area of the object
32  *
33  * Authors:
34  * Manikandan Bakthavatchalam
35  *
36  *****************************************************************************/
37 #include <visp3/core/vpMomentArea.h>
38 #include <visp3/core/vpMomentObject.h>
39 #include <visp3/core/vpMomentCentered.h>
40 #include <visp3/core/vpMomentDatabase.h>
41 #include <cmath>
42 
48  /* getObject() returns a reference to a vpMomentObject. This is public member of vpMoment */
49  if(getObject().getType()==vpMomentObject::DISCRETE) {
50  bool found_moment_centered;
51  /* getMoments() returns a reference to a vpMomentDatabase. It is a protected member of and is inherited from vpMoment
52  * .get() is a member function of vpMomentDatabase that returns a specific moment which is linked to it
53  */
54  const vpMomentCentered& momentCentered = static_cast<const vpMomentCentered&>(getMoments().get("vpMomentCentered",found_moment_centered));
55  if(!found_moment_centered) throw vpException(vpException::notInitialized,"vpMomentCentered not found");
56  values[0] = momentCentered.get(2,0) + momentCentered.get(0,2);
57  }
58  else {
59  values[0] = getObject().get(0,0);
60  }
61 }
62 
67  values.resize(1);
68 }
69 
73 VISP_EXPORT std::ostream & operator<<(std::ostream & os, const vpMomentArea& m){
74  os << (__FILE__) << std::endl;
75  os << "a(m00) = " << m.values[0] << std::endl;
76  return os;
77 }
78 
84 void vpMomentArea::printDependencies(std::ostream& os) const{
85  os << (__FILE__) << std::endl;
86 
87  bool found_moment_centered;
88  const vpMomentCentered& momentCentered = static_cast<const vpMomentCentered&>(getMoments().get("vpMomentCentered",found_moment_centered));
89  if(!found_moment_centered) throw vpException(vpException::notInitialized,"vpMomentCentered not found");
90 
91  if(getObject().getType()==vpMomentObject::DISCRETE)
92  {
93  os << "mu20 = " << momentCentered.get(2, 0) << "\t";
94  os << "mu02 = " << momentCentered.get(0, 2) << std::endl;
95  }
96  else
97  {
98  os << "mu00 = " << momentCentered.get(0, 0) << std::endl;
99  }
100 }
error that can be emited by ViSP classes.
Definition: vpException.h:73
const std::vector< double > & get() const
void printDependencies(std::ostream &os) const
Class handling the surface moment.
Definition: vpMomentArea.h:53
This class defines shared methods/attributes for 2D moments.
Definition: vpMoment.h:106
const vpMoment & get(const char *type, bool &found) const
This class defines the double-indexed centered moment descriptor .
friend std::ostream & operator<<(std::ostream &s, const vpArray2D< Type > &A)
Definition: vpArray2D.h:267
double get(unsigned int i, unsigned int j) const
vpMomentDatabase & getMoments() const
Definition: vpMoment.h:119
const vpMomentObject & getObject() const
Definition: vpMoment.h:145
std::vector< double > values
Definition: vpMoment.h:114