vpRxyzVector.cpp

/****************************************************************************
 *
 * This file is part of the ViSP software.
 * Copyright (C) 2005 - 2017 by Inria. All rights reserved.
 *
 * This software is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * See the file LICENSE.txt at the root directory of this source
 * distribution for additional information about the GNU GPL.
 *
 * For using ViSP with software that can not be combined with the GNU
 * GPL, please contact Inria about acquiring a ViSP Professional
 * Edition License.
 *
 * See http://visp.inria.fr for more information.
 *
 * This software was developed at:
 * Inria Rennes - Bretagne Atlantique
 * Campus Universitaire de Beaulieu
 * 35042 Rennes Cedex
 * France
 *
 * If you have questions regarding the use of this file, please contact
 * Inria at visp@inria.fr
 *
 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Description:
 * Rxyz angle parameterization for the rotation.
 * Rxyz(phi,theta,psi) = Rot(x,phi)Rot(y,theta)Rot(z,psi).
 *
 * Authors:
 * Eric Marchand
 * Fabien Spindler
 *
 *****************************************************************************/

#include <math.h>

#include <visp3/core/vpRxyzVector.h>

vpRxyzVector::vpRxyzVector() : vpRotationVector(3) {}

vpRxyzVector::vpRxyzVector(const vpRxyzVector &rxyz) : vpRotationVector(rxyz) {}

vpRxyzVector::vpRxyzVector(const double phi, const double theta, const double psi) : vpRotationVector(3)
{
  buildFrom(phi, theta, psi);
}

vpRxyzVector::vpRxyzVector(const vpRotationMatrix &R) : vpRotationVector(3) { buildFrom(R); }

vpRxyzVector::vpRxyzVector(const vpThetaUVector &tu) : vpRotationVector(3) { buildFrom(tu); }

vpRxyzVector::vpRxyzVector(const vpColVector &rxyz) : vpRotationVector(3)
{
  if (rxyz.size() != 3) {
    throw(vpException(vpException::dimensionError, "Cannot construct a R-xyz vector from a %d-dimension col vector",
                      rxyz.size()));
  }
  for (unsigned int i = 0; i < 3; i++)
    data[i] = rxyz[i];
}

vpRxyzVector vpRxyzVector::buildFrom(const vpRotationMatrix &R)
{
  double COEF_MIN_ROT = 1e-6;
  double phi;

  if ((fabs(R[1][2]) < COEF_MIN_ROT) && (fabs(R[2][2]) < COEF_MIN_ROT))
    phi = 0;
  else
    phi = atan2(-R[1][2], R[2][2]);

  double si = sin(phi);
  double co = cos(phi);
  double theta = atan2(R[0][2], -si * R[1][2] + co * R[2][2]);
  double psi = atan2(co * R[1][0] + si * R[2][0], co * R[1][1] + si * R[2][1]);

  buildFrom(phi, theta, psi);

  return *this;
}

vpRxyzVector vpRxyzVector::buildFrom(const vpThetaUVector &tu)
{
  vpRotationMatrix R;
  R.buildFrom(tu);
  buildFrom(R);

  return *this;
}

void vpRxyzVector::buildFrom(const double phi, const double theta, const double psi)
{
  data[0] = phi;
  data[1] = theta;
  data[2] = psi;
}

vpRxyzVector &vpRxyzVector::operator=(double v)
{
  for (unsigned int i = 0; i < dsize; i++)
    data[i] = v;

  return *this;
}

vpRxyzVector &vpRxyzVector::operator=(const vpColVector &rxyz)
{
  if (rxyz.size() != 3) {
    throw(vpException(vpException::dimensionError, "Cannot set a R-xyz vector from a %d-dimension col vector",
                      rxyz.size()));
  }
  for (unsigned int i = 0; i < 3; i++)
    data[i] = rxyz[i];

  return *this;
}