RelativeElevationFactor.h

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#pragma once

#include <gtsam_unstable/dllexport.h>
#include <gtsam/geometry/Pose3.h>
#include <gtsam/nonlinear/NonlinearFactor.h>

namespace gtsam {

class GTSAM_UNSTABLE_EXPORT RelativeElevationFactor: public NoiseModelFactorN<Pose3, Point3> {
private:

  double measured_; 
  typedef RelativeElevationFactor This;
  typedef NoiseModelFactorN<Pose3, Point3> Base;

public:

  // Provide access to the Matrix& version of evaluateError:
  using Base::evaluateError;

  RelativeElevationFactor() : measured_(0.0) {} /* Default constructor */

  RelativeElevationFactor(Key poseKey, Key pointKey, double measured,
      const SharedNoiseModel& model);

  ~RelativeElevationFactor() override {}

  gtsam::NonlinearFactor::shared_ptr clone() const override {
    return std::static_pointer_cast<gtsam::NonlinearFactor>(
        gtsam::NonlinearFactor::shared_ptr(new This(*this))); }

  Vector evaluateError(const Pose3& pose, const Point3& point,
      OptionalMatrixType H1, OptionalMatrixType H2) const override;

  inline double measured() const { return measured_; }

  bool equals(const NonlinearFactor& expected, double tol=1e-9) const override;

  void print(const std::string& s="", const KeyFormatter& keyFormatter = DefaultKeyFormatter) const override;

private:

#ifdef GTSAM_ENABLE_BOOST_SERIALIZATION

  friend class boost::serialization::access;
  template<class ARCHIVE>
  void serialize(ARCHIVE & ar, const unsigned int /*version*/) {
    // NoiseModelFactor2 instead of NoiseModelFactorN for backward compatibility
    ar & boost::serialization::make_nvp("NoiseModelFactor2",
        boost::serialization::base_object<Base>(*this));
    ar & BOOST_SERIALIZATION_NVP(measured_);
  }
#endif
}; // RelativeElevationFactor


} // \namespace gtsam