parameter_se2_offset.cpp

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// 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
// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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#include "parameter_se2_offset.h"
 
#include "vertex_se2.h"
 
namespace g2o {
namespace tutorial {
 
ParameterSE2Offset::ParameterSE2Offset() {}
 
void ParameterSE2Offset::setOffset(const SE2& offset) {
  _offset = offset;
  _inverseOffset = offset.inverse();
}
 
bool ParameterSE2Offset::read(std::istream& is) {
  double x, y, th;
  is >> x >> y >> th;
  setOffset(SE2(x, y, th));
  return true;
}
 
bool ParameterSE2Offset::write(std::ostream& os) const {
  os << _offset.translation().x() << " " << _offset.translation().y() << " "
     << _offset.rotation().angle();
  return os.good();
}
 
void CacheSE2Offset::updateImpl() {
  const VertexSE2* v = static_cast<const VertexSE2*>(vertex());
  _n2w = v->estimate() * _offsetParam->offset();
  _w2n = _n2w.inverse();
}
 
bool CacheSE2Offset::resolveDependencies() {
  _offsetParam = dynamic_cast<ParameterSE2Offset*>(_parameters[0]);
  return _offsetParam != 0;
}
 
}  // end namespace tutorial
}  // namespace g2o