// g2o - General Graph Optimization
// Copyright (C) 2011 R. Kuemmerle, G. Grisetti, W. Burgard
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright notice,
//   this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
//   notice, this list of conditions and the following disclaimer in the
//   documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
// IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
// PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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#ifndef G2O_EDGE_SE2_POINT_XY_H
#define G2O_EDGE_SE2_POINT_XY_H

#include "g2o/config.h"
#include "g2o/core/base_binary_edge.h"
#include "g2o_types_slam2d_api.h"
#include "vertex_point_xy.h"
#include "vertex_se2.h"

namespace g2o {

class G2O_TYPES_SLAM2D_API EdgeSE2PointXY
    : public BaseBinaryEdge<2, Vector2, VertexSE2, VertexPointXY> {
 public:
  EIGEN_MAKE_ALIGNED_OPERATOR_NEW
  EdgeSE2PointXY();

  void computeError() {
    const VertexSE2* v1 = static_cast<const VertexSE2*>(_vertices[0]);
    const VertexPointXY* l2 = static_cast<const VertexPointXY*>(_vertices[1]);
    _error = (v1->estimate().inverse() * l2->estimate()) - _measurement;
  }

  virtual bool setMeasurementData(const double* d) {
    _measurement[0] = d[0];
    _measurement[1] = d[1];
    return true;
  }

  virtual bool getMeasurementData(double* d) const {
    d[0] = _measurement[0];
    d[1] = _measurement[1];
    return true;
  }

  virtual int measurementDimension() const { return 2; }

  virtual bool setMeasurementFromState() {
    const VertexSE2* v1 = static_cast<const VertexSE2*>(_vertices[0]);
    const VertexPointXY* l2 = static_cast<const VertexPointXY*>(_vertices[1]);
    _measurement = v1->estimate().inverse() * l2->estimate();
    return true;
  }

  virtual bool read(std::istream& is);
  virtual bool write(std::ostream& os) const;

  virtual void initialEstimate(const OptimizableGraph::VertexSet& from,
                               OptimizableGraph::Vertex* to);
  virtual double initialEstimatePossible(
      const OptimizableGraph::VertexSet& from, OptimizableGraph::Vertex* to) {
    (void)to;
    return (from.count(_vertices[0]) == 1 ? 1.0 : -1.0);
  }
#ifndef NUMERIC_JACOBIAN_TWO_D_TYPES
  virtual void linearizeOplus();
#endif
};

class G2O_TYPES_SLAM2D_API EdgeSE2PointXYWriteGnuplotAction
    : public WriteGnuplotAction {
 public:
  EdgeSE2PointXYWriteGnuplotAction();
  virtual HyperGraphElementAction* operator()(
      HyperGraph::HyperGraphElement* element,
      HyperGraphElementAction::Parameters* params_);
};

#ifdef G2O_HAVE_OPENGL
class G2O_TYPES_SLAM2D_API EdgeSE2PointXYDrawAction : public DrawAction {
 public:
  EdgeSE2PointXYDrawAction();
  virtual HyperGraphElementAction* operator()(
      HyperGraph::HyperGraphElement* element,
      HyperGraphElementAction::Parameters* params_);
};
#endif

}  // namespace g2o

#endif
