joint-trajectory-generator.cpp

Go to the documentation of this file.

/*
 * Copyright 2014, Oscar E. Ramos Ponce, LAAS-CNRS
 *
 */
 
#include <dynamic-graph/factory.h>
 
#include <sot/core/debug.hh>
#include <sot/core/stop-watch.hh>
#include <sot/torque_control/commands-helper.hh>
#include <sot/torque_control/joint-trajectory-generator.hh>
 
#include "../include/sot/torque_control/stc-commands.hh"
 
namespace dynamicgraph {
namespace sot {
namespace torque_control {
namespace dynamicgraph = ::dynamicgraph;
using namespace dynamicgraph;
using namespace dynamicgraph::command;
using namespace std;
using namespace Eigen;
 
// Size to be aligned "-------------------------------------------------------"
#define PROFILE_POSITION_DESIRED_COMPUTATION \
  "TrajGen: reference joint traj computation              "
#define PROFILE_FORCE_DESIRED_COMPUTATION \
  "TrajGen: reference force computation                   "
 
typedef JointTrajectoryGenerator EntityClassName;
 
/* --- DG FACTORY ---------------------------------------------------- */
DYNAMICGRAPH_FACTORY_ENTITY_PLUGIN(JointTrajectoryGenerator,
                                   "JointTrajectoryGenerator");
 
/* ------------------------------------------------------------------- */
/* --- CONSTRUCTION -------------------------------------------------- */
/* ------------------------------------------------------------------- */
JointTrajectoryGenerator::JointTrajectoryGenerator(const std::string& name)
    : Entity(name),
      CONSTRUCT_SIGNAL_IN(base6d_encoders, dynamicgraph::Vector),
      CONSTRUCT_SIGNAL_OUT(q, dynamicgraph::Vector, m_base6d_encodersSIN),
      CONSTRUCT_SIGNAL_OUT(dq, dynamicgraph::Vector, m_qSOUT),
      CONSTRUCT_SIGNAL_OUT(ddq, dynamicgraph::Vector, m_qSOUT),
      CONSTRUCT_SIGNAL(fRightFoot, OUT, dynamicgraph::Vector),
      CONSTRUCT_SIGNAL(fLeftFoot, OUT, dynamicgraph::Vector),
      CONSTRUCT_SIGNAL(fRightHand, OUT, dynamicgraph::Vector),
      CONSTRUCT_SIGNAL(fLeftHand, OUT, dynamicgraph::Vector),
      m_initSucceeded(false),
      m_firstIter(true),
      m_robot_util(RefVoidRobotUtil()) {
  BIND_SIGNAL_TO_FUNCTION(fRightFoot, OUT, dynamicgraph::Vector);
  BIND_SIGNAL_TO_FUNCTION(fLeftFoot, OUT, dynamicgraph::Vector);
  BIND_SIGNAL_TO_FUNCTION(fRightHand, OUT, dynamicgraph::Vector);
  BIND_SIGNAL_TO_FUNCTION(fLeftHand, OUT, dynamicgraph::Vector);
 
  m_status_force.resize(4, JTG_STOP);
  m_minJerkTrajGen_force.resize(4);
  m_sinTrajGen_force.resize(4);
  m_linChirpTrajGen_force.resize(4);
  m_currentTrajGen_force.resize(4);
  m_noTrajGen_force.resize(4);
 
  m_iterForceSignals.resize(4, 0);
 
  Entity::signalRegistration(m_qSOUT << m_dqSOUT << m_ddqSOUT
                                     << m_base6d_encodersSIN << m_fRightFootSOUT
                                     << m_fLeftFootSOUT << m_fRightHandSOUT
                                     << m_fLeftHandSOUT);
 
  /* Commands. */
  addCommand("init",
             makeCommandVoid2(*this, &JointTrajectoryGenerator::init,
                              docCommandVoid2("Initialize the entity.",
                                              "Time period in seconds (double)",
                                              "robotRef (string)")));
 
  addCommand(
      "getJoint",
      makeCommandVoid1(
          *this, &JointTrajectoryGenerator::getJoint,
          docCommandVoid1("Get the current angle of the specified joint.",
                          "Joint name (string)")));
 
  // const std::string& docstring = ;
 
  addCommand("isTrajectoryEnded",
             new command::IsTrajectoryEnded(
                 *this, "Return whether all joint trajectories have ended"));
 
  addCommand("playTrajectoryFile",
             makeCommandVoid1(
                 *this, &JointTrajectoryGenerator::playTrajectoryFile,
                 docCommandVoid1(
                     "Play the trajectory read from the specified text file.",
                     "(string) File name, path included")));
 
  addCommand("startSinusoid",
             makeCommandVoid3(
                 *this, &JointTrajectoryGenerator::startSinusoid,
                 docCommandVoid3(
                     "Start an infinite sinusoid motion.",
                     "(string) joint name", "(double) final angle in radians",
                     "(double) time to reach the final angle in sec")));
 
  addCommand("startTriangle",
             makeCommandVoid4(
                 *this, &JointTrajectoryGenerator::startTriangle,
                 docCommandVoid4(
                     "Start an infinite triangle wave.", "(string) joint name",
                     "(double) final angle in radians",
                     "(double) time to reach the final angle in sec",
                     "(double) time to accelerate in sec")));
 
  addCommand("startConstAcc",
             makeCommandVoid3(
                 *this, &JointTrajectoryGenerator::startConstAcc,
                 docCommandVoid3(
                     "Start an infinite trajectory with piece-wise constant "
                     "acceleration.",
                     "(string) joint name", "(double) final angle in radians",
                     "(double) time to reach the final angle in sec")));
 
  addCommand(
      "startForceSinusoid",
      makeCommandVoid4(
          *this, &JointTrajectoryGenerator::startForceSinusoid,
          docCommandVoid4("Start an infinite sinusoid force.",
                          "(string) force name", "(int) force axis in [0, 5]",
                          "(double) final 1d force in N or Nm",
                          "(double) time to reach the final force in sec")));
 
  //        addCommand("startForceSinusoid",
  //                   makeCommandVoid3(*this,
  //                   &JointTrajectoryGenerator::startForceSinusoid,
  //                                    docCommandVoid3("Start an infinite
  //                                    sinusoid force.",
  //                                                    "(string) force name",
  //                                                    "(Vector) final 6d force
  //                                                    in N/Nm",
  //                                                    "(double) time to reach
  //                                                    the final force in
  //                                                    sec")));
 
  addCommand(
      "startLinChirp",
      makeCommandVoid5(
          *this, &JointTrajectoryGenerator::startLinearChirp,
          docCommandVoid5("Start a linear-chirp motion.", "(string) joint name",
                          "(double) final angle in radians",
                          "(double) initial frequency [Hz]",
                          "(double) final frequency [Hz]",
                          "(double) trajectory time [sec]")));
 
  addCommand("startForceLinChirp",
             makeCommandVoid6(
                 *this, &JointTrajectoryGenerator::startForceLinearChirp,
                 docCommandVoid6("Start a linear-chirp force traj.",
                                 "(string) force name", "(int) force axis",
                                 "(double) final force in N/Nm",
                                 "(double) initial frequency [Hz]",
                                 "(double) final frequency [Hz]",
                                 "(double) trajectory time [sec]")));
 
  addCommand("moveJoint",
             makeCommandVoid3(
                 *this, &JointTrajectoryGenerator::moveJoint,
                 docCommandVoid3(
                     "Move the joint to the specified angle with a minimum "
                     "jerk trajectory.",
                     "(string) joint name", "(double) final angle in radians",
                     "(double) time to reach the final angle in sec")));
 
  addCommand(
      "moveForce",
      makeCommandVoid4(
          *this, &JointTrajectoryGenerator::moveForce,
          docCommandVoid4("Move the force to the specified value with a "
                          "minimum jerk trajectory.",
                          "(string) force name", "(int) force axis",
                          "(double) final force in N/Nm",
                          "(double) time to reach the final force in sec")));
 
  addCommand("stop",
             makeCommandVoid1(
                 *this, &JointTrajectoryGenerator::stop,
                 docCommandVoid1("Stop the motion of the specified joint, or "
                                 "of all joints if no joint name is specified.",
                                 "(string) joint name")));
 
  addCommand(
      "stopForce",
      makeCommandVoid1(*this, &JointTrajectoryGenerator::stopForce,
                       docCommandVoid1("Stop the specified force trajectort",
                                       "(string) force name (rh,lh,lf,rf)")));
}
 
void JointTrajectoryGenerator::init(const double& dt,
                                    const std::string& robotRef) {
  /* Retrieve m_robot_util  informations */
  std::string localName(robotRef);
  if (isNameInRobotUtil(localName))
    m_robot_util = getRobotUtil(localName);
  else {
    SEND_MSG("You should have an entity controller manager initialized before",
             MSG_TYPE_ERROR);
    return;
  }
 
  if (dt <= 0.0) return SEND_MSG("Timestep must be positive", MSG_TYPE_ERROR);
  m_firstIter = true;
  m_dt = dt;
 
  m_status.resize(m_robot_util->m_nbJoints, JTG_STOP);
  m_minJerkTrajGen.resize(m_robot_util->m_nbJoints);
  m_sinTrajGen.resize(m_robot_util->m_nbJoints);
  m_triangleTrajGen.resize(m_robot_util->m_nbJoints);
  m_constAccTrajGen.resize(m_robot_util->m_nbJoints);
  m_linChirpTrajGen.resize(m_robot_util->m_nbJoints);
  m_currentTrajGen.resize(m_robot_util->m_nbJoints);
  m_noTrajGen.resize(m_robot_util->m_nbJoints);
 
  for (long unsigned int i = 0; i < m_robot_util->m_nbJoints; i++) {
    m_minJerkTrajGen[i] = new MinimumJerkTrajectoryGenerator(dt, 5.0, 1);
    m_sinTrajGen[i] = new SinusoidTrajectoryGenerator(dt, 5.0, 1);
    m_triangleTrajGen[i] = new TriangleTrajectoryGenerator(dt, 5.0, 1);
    m_constAccTrajGen[i] =
        new ConstantAccelerationTrajectoryGenerator(dt, 5.0, 1);
    m_linChirpTrajGen[i] = new LinearChirpTrajectoryGenerator(dt, 5.0, 1);
    m_noTrajGen[i] = new NoTrajectoryGenerator(1);
    m_currentTrajGen[i] = m_noTrajGen[i];
  }
  m_textFileTrajGen =
      new TextFileTrajectoryGenerator(dt, m_robot_util->m_nbJoints);
 
  for (int i = 0; i < 4; i++) {
    m_minJerkTrajGen_force[i] = new MinimumJerkTrajectoryGenerator(dt, 5.0, 6);
    m_sinTrajGen_force[i] = new SinusoidTrajectoryGenerator(dt, 5.0, 6);
    m_linChirpTrajGen_force[i] = new LinearChirpTrajectoryGenerator(dt, 5.0, 6);
    m_noTrajGen_force[i] = new NoTrajectoryGenerator(6);
    m_currentTrajGen_force[i] = m_noTrajGen_force[i];
  }
  m_initSucceeded = true;
}
 
/* ------------------------------------------------------------------- */
/* --- SIGNALS ------------------------------------------------------- */
/* ------------------------------------------------------------------- */
 
DEFINE_SIGNAL_OUT_FUNCTION(q, dynamicgraph::Vector) {
  if (!m_initSucceeded) {
    SEND_WARNING_STREAM_MSG(
        "Cannot compute signal positionDes before initialization!");
    return s;
  }
 
  getProfiler().start(PROFILE_POSITION_DESIRED_COMPUTATION);
  {
    // at first iteration store current joints positions
    if (m_firstIter) {
      const dynamicgraph::Vector& base6d_encoders = m_base6d_encodersSIN(iter);
      if (base6d_encoders.size() !=
          static_cast<Eigen::VectorXd::Index>(m_robot_util->m_nbJoints + 6)) {
        SEND_ERROR_STREAM_MSG("Unexpected size of signal base6d_encoder " +
                              toString(base6d_encoders.size()) + " " +
                              toString(m_robot_util->m_nbJoints + 6));
        return s;
      }
      for (unsigned int i = 0; i < m_robot_util->m_nbJoints; i++)
        m_noTrajGen[i]->set_initial_point(base6d_encoders(6 + i));
      m_firstIter = false;
    }
 
    if (s.size() !=
        static_cast<Eigen::VectorXd::Index>(m_robot_util->m_nbJoints))
      s.resize(m_robot_util->m_nbJoints);
 
    if (m_status[0] == JTG_TEXT_FILE) {
      const VectorXd& qRef = m_textFileTrajGen->compute_next_point();
      for (unsigned int i = 0; i < m_robot_util->m_nbJoints; i++) {
        s(i) = qRef[i];
        if (m_textFileTrajGen->isTrajectoryEnded()) {
          m_noTrajGen[i]->set_initial_point(s(i));
          m_status[i] = JTG_STOP;
        }
      }
      if (m_textFileTrajGen->isTrajectoryEnded())
        SEND_MSG("Text file trajectory ended.", MSG_TYPE_INFO);
    } else {
      for (unsigned int i = 0; i < m_robot_util->m_nbJoints; i++) {
        s(i) = m_currentTrajGen[i]->compute_next_point()(0);
        if (m_currentTrajGen[i]->isTrajectoryEnded()) {
          m_currentTrajGen[i] = m_noTrajGen[i];
          m_noTrajGen[i]->set_initial_point(s(i));
          m_status[i] = JTG_STOP;
          SEND_MSG("Trajectory of joint " + m_robot_util->get_name_from_id(i) +
                       " ended.",
                   MSG_TYPE_INFO);
        }
      }
    }
  }
  getProfiler().stop(PROFILE_POSITION_DESIRED_COMPUTATION);
 
  return s;
}
 
DEFINE_SIGNAL_OUT_FUNCTION(dq, dynamicgraph::Vector) {
  if (!m_initSucceeded) {
    SEND_WARNING_STREAM_MSG(
        "Cannot compute signal positionDes before initialization! iter: " +
        toString(iter));
    return s;
  }
 
  if (s.size() != static_cast<Eigen::VectorXd::Index>(m_robot_util->m_nbJoints))
    s.resize(m_robot_util->m_nbJoints);
  if (m_status[0] == JTG_TEXT_FILE) {
    for (unsigned int i = 0; i < m_robot_util->m_nbJoints; i++)
      s(i) = m_textFileTrajGen->getVel()[i];
  } else
    for (unsigned int i = 0; i < m_robot_util->m_nbJoints; i++)
      s(i) = m_currentTrajGen[i]->getVel()(0);
 
  return s;
}
 
DEFINE_SIGNAL_OUT_FUNCTION(ddq, dynamicgraph::Vector) {
  if (!m_initSucceeded) {
    SEND_WARNING_STREAM_MSG(
        "Cannot compute signal positionDes before initialization!" +
        toString(iter));
    return s;
  }
 
  if (s.size() != static_cast<Eigen::VectorXd::Index>(m_robot_util->m_nbJoints))
    s.resize(m_robot_util->m_nbJoints);
 
  if (m_status[0] == JTG_TEXT_FILE) {
    for (unsigned int i = 0; i < m_robot_util->m_nbJoints; i++)
      s(i) = m_textFileTrajGen->getAcc()[i];
  } else
    for (unsigned int i = 0; i < m_robot_util->m_nbJoints; i++)
      s(i) = m_currentTrajGen[i]->getAcc()(0);
 
  return s;
}
 
DEFINE_SIGNAL_OUT_FUNCTION(fRightFoot, dynamicgraph::Vector) {
  //        SEND_MSG("Compute force right foot iter "+toString(iter),
  //        MSG_TYPE_DEBUG);
  generateReferenceForceSignal(
      "fRightFoot",
      static_cast<int>(m_robot_util->m_force_util.get_force_id_right_foot()), s,
      iter);
  return s;
}
 
DEFINE_SIGNAL_OUT_FUNCTION(fLeftFoot, dynamicgraph::Vector) {
  generateReferenceForceSignal(
      "fLeftFoot",
      static_cast<int>(m_robot_util->m_force_util.get_force_id_left_foot()), s,
      iter);
  return s;
}
 
DEFINE_SIGNAL_OUT_FUNCTION(fRightHand, dynamicgraph::Vector) {
  generateReferenceForceSignal(
      "fRightHand",
      static_cast<int>(m_robot_util->m_force_util.get_force_id_right_hand()), s,
      iter);
  return s;
}
 
DEFINE_SIGNAL_OUT_FUNCTION(fLeftHand, dynamicgraph::Vector) {
  generateReferenceForceSignal(
      "fLeftHand",
      static_cast<int>(m_robot_util->m_force_util.get_force_id_left_hand()), s,
      iter);
  return s;
}
 
bool JointTrajectoryGenerator::generateReferenceForceSignal(
    const std::string& forceName, int fid, dynamicgraph::Vector& s, int iter) {
  if (!m_initSucceeded) {
    SEND_WARNING_STREAM_MSG("Cannot compute signal " + forceName +
                            " before initialization!");
    return false;
  }
 
  getProfiler().start(PROFILE_FORCE_DESIRED_COMPUTATION);
  {
    if (s.size() != 6) s.resize(6);
 
    if (iter > m_iterForceSignals[fid]) {
      m_currentTrajGen_force[fid]->compute_next_point();
      //            SEND_MSG("Compute force "+forceName+" with id
      //            "+toString(fid)+": "+toString(fr.transpose()),
      //            MSG_TYPE_DEBUG);
      m_iterForceSignals[fid]++;
    }
 
    const Eigen::VectorXd& fr = m_currentTrajGen_force[fid]->getPos();
    for (unsigned int i = 0; i < 6; i++) s(i) = fr(i);
 
    if (m_currentTrajGen_force[fid]->isTrajectoryEnded()) {
      m_noTrajGen_force[fid]->set_initial_point(
          m_currentTrajGen_force[fid]->getPos());
      m_currentTrajGen_force[fid] = m_noTrajGen_force[fid];
      m_status_force[fid] = JTG_STOP;
      SEND_MSG("Trajectory of force " + forceName + " ended.", MSG_TYPE_INFO);
    }
  }
  getProfiler().stop(PROFILE_FORCE_DESIRED_COMPUTATION);
 
  return true;
}
 
/* ------------------------------------------------------------------- */
/* --- COMMANDS ------------------------------------------------------ */
/* ------------------------------------------------------------------- */
 
void JointTrajectoryGenerator::getJoint(const std::string& jointName) {
  unsigned int i;
  if (convertJointNameToJointId(jointName, i) == false) return;
  const dynamicgraph::Vector& base6d_encoders =
      m_base6d_encodersSIN.accessCopy();
  SEND_MSG("Current angle of joint " + jointName + " is " +
               toString(base6d_encoders(6 + i)),
           MSG_TYPE_INFO);
}
 
bool JointTrajectoryGenerator::isTrajectoryEnded() {
  bool output = true;
  if (m_status[0] == JTG_TEXT_FILE) {
    for (unsigned int i = 0; i < m_robot_util->m_nbJoints; i++) {
      if (!m_textFileTrajGen->isTrajectoryEnded()) {
        output = false;
        SEND_MSG("Text file trajectory not ended.", MSG_TYPE_INFO);
        return output;
      }
    }
  } else {
    for (unsigned int i = 0; i < m_robot_util->m_nbJoints; i++) {
      if (!m_currentTrajGen[i]->isTrajectoryEnded()) {
        output = false;
        SEND_MSG("Trajectory of joint " + m_robot_util->get_name_from_id(i) +
                     "not ended.",
                 MSG_TYPE_INFO);
        return output;
      }
    }
  }
  return output;
}
 
void JointTrajectoryGenerator::playTrajectoryFile(const std::string& fileName) {
  if (!m_initSucceeded)
    return SEND_MSG("Cannot start sinusoid before initialization!",
                    MSG_TYPE_ERROR);
 
  for (unsigned int i = 0; i < m_robot_util->m_nbJoints; i++)
    if (m_status[i] != JTG_STOP)
      return SEND_MSG("You cannot joint " + m_robot_util->get_name_from_id(i) +
                          " because it is already controlled.",
                      MSG_TYPE_ERROR);
 
  if (!m_textFileTrajGen->loadTextFile(fileName))
    return SEND_MSG("Error while loading text file " + fileName,
                    MSG_TYPE_ERROR);
 
  // check current configuration is not too far from initial trajectory
  // configuration
  bool needToMoveToInitConf = false;
  const VectorXd& qInit = m_textFileTrajGen->get_initial_point();
  for (unsigned int i = 0; i < m_robot_util->m_nbJoints; i++)
    if (fabs(qInit[i] - m_currentTrajGen[i]->getPos()(0)) > 0.001) {
      needToMoveToInitConf = true;
      SEND_MSG("Joint " + m_robot_util->get_name_from_id(i) +
                   " is too far from initial configuration so first i will "
                   "move it there.",
               MSG_TYPE_WARNING);
    }
 
  // if necessary move joints to initial configuration
  if (needToMoveToInitConf) {
    for (unsigned int i = 0; i < m_robot_util->m_nbJoints; i++) {
      if (!isJointInRange(i, qInit[i])) return;
 
      m_minJerkTrajGen[i]->set_initial_point(m_noTrajGen[i]->getPos());
      m_minJerkTrajGen[i]->set_final_point(qInit[i]);
      m_minJerkTrajGen[i]->set_trajectory_time(4.0);
      m_status[i] = JTG_MIN_JERK;
      m_currentTrajGen[i] = m_minJerkTrajGen[i];
    }
    return;
  }
 
  for (unsigned int i = 0; i < m_robot_util->m_nbJoints; i++) {
    m_status[i] = JTG_TEXT_FILE;
  }
}
 
void JointTrajectoryGenerator::startSinusoid(const std::string& jointName,
                                             const double& qFinal,
                                             const double& time) {
  if (!m_initSucceeded)
    return SEND_MSG("Cannot start sinusoid before initialization!",
                    MSG_TYPE_ERROR);
 
  unsigned int i;
  if (convertJointNameToJointId(jointName, i) == false) return;
  if (time <= 0.0)
    return SEND_MSG("Trajectory time must be a positive number",
                    MSG_TYPE_ERROR);
  if (m_status[i] != JTG_STOP)
    return SEND_MSG(
        "You cannot move the specified joint because it is already controlled.",
        MSG_TYPE_ERROR);
  if (!isJointInRange(i, qFinal)) return;
 
  m_sinTrajGen[i]->set_initial_point(m_noTrajGen[i]->getPos());
  SEND_MSG(
      "Set initial point of sinusoid to " + toString(m_sinTrajGen[i]->getPos()),
      MSG_TYPE_DEBUG);
  m_sinTrajGen[i]->set_final_point(qFinal);
  m_sinTrajGen[i]->set_trajectory_time(time);
  m_status[i] = JTG_SINUSOID;
  m_currentTrajGen[i] = m_sinTrajGen[i];
}
 
void JointTrajectoryGenerator::startTriangle(const std::string& jointName,
                                             const double& qFinal,
                                             const double& time,
                                             const double& Tacc) {
  if (!m_initSucceeded)
    return SEND_MSG("Cannot start triangle before initialization!",
                    MSG_TYPE_ERROR);
 
  unsigned int i;
  if (convertJointNameToJointId(jointName, i) == false) return;
  if (m_status[i] != JTG_STOP)
    return SEND_MSG(
        "You cannot move the specified joint because it is already controlled.",
        MSG_TYPE_ERROR);
  if (!isJointInRange(i, qFinal)) return;
 
  m_triangleTrajGen[i]->set_initial_point(m_noTrajGen[i]->getPos());
  SEND_MSG("Set initial point of triangular trajectory to " +
               toString(m_triangleTrajGen[i]->getPos()),
           MSG_TYPE_DEBUG);
  m_triangleTrajGen[i]->set_final_point(qFinal);
 
  if (!m_triangleTrajGen[i]->set_trajectory_time(time))
    return SEND_MSG("Trajectory time cannot be negative.", MSG_TYPE_ERROR);
 
  if (!m_triangleTrajGen[i]->set_acceleration_time(Tacc))
    return SEND_MSG(
        "Acceleration time cannot be negative or larger than half the "
        "trajectory time.",
        MSG_TYPE_ERROR);
 
  m_status[i] = JTG_TRIANGLE;
  m_currentTrajGen[i] = m_triangleTrajGen[i];
}
 
void JointTrajectoryGenerator::startConstAcc(const std::string& jointName,
                                             const double& qFinal,
                                             const double& time) {
  if (!m_initSucceeded)
    return SEND_MSG(
        "Cannot start constant-acceleration trajectory before initialization!",
        MSG_TYPE_ERROR);
 
  unsigned int i;
  if (convertJointNameToJointId(jointName, i) == false) return;
  if (time <= 0.0)
    return SEND_MSG("Trajectory time must be a positive number",
                    MSG_TYPE_ERROR);
  if (m_status[i] != JTG_STOP)
    return SEND_MSG(
        "You cannot move the specified joint because it is already controlled.",
        MSG_TYPE_ERROR);
  if (!isJointInRange(i, qFinal)) return;
 
  m_constAccTrajGen[i]->set_initial_point(m_noTrajGen[i]->getPos());
  SEND_MSG("Set initial point of const-acc trajectory to " +
               toString(m_constAccTrajGen[i]->getPos()),
           MSG_TYPE_DEBUG);
  m_constAccTrajGen[i]->set_final_point(qFinal);
  m_constAccTrajGen[i]->set_trajectory_time(time);
  m_status[i] = JTG_CONST_ACC;
  m_currentTrajGen[i] = m_constAccTrajGen[i];
}
 
void JointTrajectoryGenerator::startForceSinusoid(const std::string& forceName,
                                                  const int& axis,
                                                  const double& fFinal,
                                                  const double& time) {
  if (!m_initSucceeded)
    return SEND_MSG("Cannot start force sinusoid before initialization!",
                    MSG_TYPE_ERROR);
 
  unsigned int i;
  if (convertForceNameToForceId(forceName, i) == false) return;
  if (time <= 0.0)
    return SEND_MSG("Trajectory time must be a positive number",
                    MSG_TYPE_ERROR);
  if (axis < 0 || axis > 5)
    return SEND_MSG("Axis must be between 0 and 5", MSG_TYPE_ERROR);
  if (m_status_force[i] != JTG_STOP)
    return SEND_MSG(
        "You cannot move the specified force because it is already controlled.",
        MSG_TYPE_ERROR);
  //        EIGEN_CONST_VECTOR_FROM_SIGNAL(fFinal_eig, fFinal);
  if (!isForceInRange(i, axis, fFinal)) return;
 
  VectorXd currentF = m_noTrajGen_force[i]->getPos();
  m_sinTrajGen_force[i]->set_initial_point(currentF);
  SEND_MSG("Set initial point of sinusoid to " +
               toString(m_sinTrajGen_force[i]->getPos()),
           MSG_TYPE_DEBUG);
  currentF[axis] = fFinal;
  m_sinTrajGen_force[i]->set_final_point(currentF);
  m_sinTrajGen_force[i]->set_trajectory_time(time);
  m_status_force[i] = JTG_SINUSOID;
  m_currentTrajGen_force[i] = m_sinTrajGen_force[i];
}
 
void JointTrajectoryGenerator::startLinearChirp(const string& jointName,
                                                const double& qFinal,
                                                const double& f0,
                                                const double& f1,
                                                const double& time) {
  if (!m_initSucceeded)
    return SEND_MSG("Cannot start linear chirp before initialization!",
                    MSG_TYPE_ERROR);
 
  unsigned int i;
  if (convertJointNameToJointId(jointName, i) == false) return;
  if (time <= 0.0)
    return SEND_MSG("Trajectory time must be a positive number",
                    MSG_TYPE_ERROR);
  if (m_status[i] != JTG_STOP)
    return SEND_MSG(
        "You cannot move the specified joint because it is already controlled.",
        MSG_TYPE_ERROR);
  if (!isJointInRange(i, qFinal)) return;
  if (f0 > f1)
    return SEND_MSG(
        "f0 " + toString(f0) + " cannot to be more than f1 " + toString(f1),
        MSG_TYPE_ERROR);
  if (f0 <= 0.0)
    return SEND_MSG("Frequency has to be positive " + toString(f0),
                    MSG_TYPE_ERROR);
 
  if (!m_linChirpTrajGen[i]->set_initial_point(m_noTrajGen[i]->getPos()))
    return SEND_MSG("Error while setting initial point " +
                        toString(m_noTrajGen[i]->getPos()),
                    MSG_TYPE_ERROR);
  if (!m_linChirpTrajGen[i]->set_final_point(qFinal))
    return SEND_MSG("Error while setting final point " + toString(qFinal),
                    MSG_TYPE_ERROR);
  if (!m_linChirpTrajGen[i]->set_trajectory_time(time))
    return SEND_MSG("Error while setting trajectory time " + toString(time),
                    MSG_TYPE_ERROR);
  if (!m_linChirpTrajGen[i]->set_initial_frequency(f0))
    return SEND_MSG("Error while setting initial frequency " + toString(f0),
                    MSG_TYPE_ERROR);
  if (!m_linChirpTrajGen[i]->set_final_frequency(f1))
    return SEND_MSG("Error while setting final frequency " + toString(f1),
                    MSG_TYPE_ERROR);
  m_status[i] = JTG_LIN_CHIRP;
  m_currentTrajGen[i] = m_linChirpTrajGen[i];
}
 
void JointTrajectoryGenerator::startForceLinearChirp(
    const string& forceName, const int& axis, const double& fFinal,
    const double& f0, const double& f1, const double& time) {
  if (!m_initSucceeded)
    return SEND_MSG("Cannot start force linear chirp before initialization!",
                    MSG_TYPE_ERROR);
 
  unsigned int i;
  if (convertForceNameToForceId(forceName, i) == false) return;
  if (time <= 0.0)
    return SEND_MSG("Trajectory time must be a positive number",
                    MSG_TYPE_ERROR);
  if (m_status_force[i] != JTG_STOP)
    return SEND_MSG(
        "You cannot move the specified force because it is already controlled.",
        MSG_TYPE_ERROR);
  if (!isForceInRange(i, axis, fFinal)) return;
  if (f0 > f1)
    return SEND_MSG(
        "f0 " + toString(f0) + " cannot to be more than f1 " + toString(f1),
        MSG_TYPE_ERROR);
  if (f0 <= 0.0)
    return SEND_MSG("Frequency has to be positive " + toString(f0),
                    MSG_TYPE_ERROR);
 
  VectorXd currentF = m_noTrajGen_force[i]->getPos();
  if (!m_linChirpTrajGen_force[i]->set_initial_point(currentF))
    return SEND_MSG("Error while setting initial point " +
                        toString(m_noTrajGen_force[i]->getPos()),
                    MSG_TYPE_ERROR);
  currentF[axis] = fFinal;
  if (!m_linChirpTrajGen_force[i]->set_final_point(currentF))
    return SEND_MSG("Error while setting final point " + toString(fFinal),
                    MSG_TYPE_ERROR);
  if (!m_linChirpTrajGen_force[i]->set_trajectory_time(time))
    return SEND_MSG("Error while setting trajectory time " + toString(time),
                    MSG_TYPE_ERROR);
  if (!m_linChirpTrajGen_force[i]->set_initial_frequency(
          Vector6d::Constant(f0)))
    return SEND_MSG("Error while setting initial frequency " + toString(f0),
                    MSG_TYPE_ERROR);
  if (!m_linChirpTrajGen_force[i]->set_final_frequency(Vector6d::Constant(f1)))
    return SEND_MSG("Error while setting final frequency " + toString(f1),
                    MSG_TYPE_ERROR);
  m_status_force[i] = JTG_LIN_CHIRP;
  m_currentTrajGen_force[i] = m_linChirpTrajGen_force[i];
}
 
void JointTrajectoryGenerator::moveJoint(const string& jointName,
                                         const double& qFinal,
                                         const double& time) {
  if (!m_initSucceeded)
    return SEND_MSG("Cannot move joint before initialization!", MSG_TYPE_ERROR);
 
  unsigned int i;
  if (convertJointNameToJointId(jointName, i) == false) return;
  if (time <= 0.0)
    return SEND_MSG("Trajectory time must be a positive number",
                    MSG_TYPE_ERROR);
  if (m_status[i] != JTG_STOP)
    return SEND_MSG(
        "You cannot move the specified joint because it is already controlled.",
        MSG_TYPE_ERROR);
  if (!isJointInRange(i, qFinal)) return;
 
  m_minJerkTrajGen[i]->set_initial_point(m_noTrajGen[i]->getPos());
  m_minJerkTrajGen[i]->set_final_point(qFinal);
  m_minJerkTrajGen[i]->set_trajectory_time(time);
  m_status[i] = JTG_MIN_JERK;
  m_currentTrajGen[i] = m_minJerkTrajGen[i];
}
 
void JointTrajectoryGenerator::moveForce(const string& forceName,
                                         const int& axis, const double& fFinal,
                                         const double& time) {
  if (!m_initSucceeded)
    return SEND_MSG("Cannot move force before initialization!", MSG_TYPE_ERROR);
 
  unsigned int i;
  if (convertForceNameToForceId(forceName, i) == false) return;
  if (time <= 0.0)
    return SEND_MSG("Trajectory time must be a positive number",
                    MSG_TYPE_ERROR);
  if (m_status_force[i] != JTG_STOP)
    return SEND_MSG(
        "You cannot move the specified force because it is already controlled.",
        MSG_TYPE_ERROR);
  if (!isForceInRange(i, axis, fFinal)) return;
 
  VectorXd currentF = m_noTrajGen_force[i]->getPos();
  m_minJerkTrajGen_force[i]->set_initial_point(currentF);
  currentF[axis] = fFinal;
  m_minJerkTrajGen_force[i]->set_final_point(currentF);
  m_minJerkTrajGen_force[i]->set_trajectory_time(time);
  m_status_force[i] = JTG_MIN_JERK;
  m_currentTrajGen_force[i] = m_minJerkTrajGen_force[i];
}
 
void JointTrajectoryGenerator::stop(const std::string& jointName) {
  if (!m_initSucceeded)
    return SEND_MSG("Cannot stop joint before initialization!", MSG_TYPE_ERROR);
 
  const dynamicgraph::Vector& base6d_encoders =
      m_base6d_encodersSIN.accessCopy();
  if (jointName == "all") {
    for (unsigned int i = 0; i < m_robot_util->m_nbJoints; i++) {
      m_status[i] = JTG_STOP;
      // update the initial position
      m_noTrajGen[i]->set_initial_point(base6d_encoders(6 + i));
      m_currentTrajGen[i] = m_noTrajGen[i];
    }
    return;
  }
 
  unsigned int i;
  if (convertJointNameToJointId(jointName, i) == false) return;
  m_noTrajGen[i]->set_initial_point(
      base6d_encoders(6 + i));  // update the initial position
  m_status[i] = JTG_STOP;
  m_currentTrajGen[i] = m_noTrajGen[i];
}
 
void JointTrajectoryGenerator::stopForce(const std::string& forceName) {
  if (!m_initSucceeded)
    return SEND_MSG("Cannot stop force before initialization!", MSG_TYPE_ERROR);
 
  unsigned int i;
  if (convertForceNameToForceId(forceName, i) == false) return;
  m_noTrajGen_force[i]->set_initial_point(
      m_currentTrajGen_force[i]->getPos());  // update the initial position
  m_status_force[i] = JTG_STOP;
  m_currentTrajGen_force[i] = m_noTrajGen_force[i];
}
 
/* ------------------------------------------------------------------- */
// ************************ PROTECTED MEMBER METHODS ********************
/* ------------------------------------------------------------------- */
 
bool JointTrajectoryGenerator::convertJointNameToJointId(
    const std::string& name, unsigned int& id) {
  // Check if the joint name exists
  sot::Index jid = m_robot_util->get_id_from_name(name);
  if (jid < 0) {
    SEND_MSG("The specified joint name does not exist", MSG_TYPE_ERROR);
    std::stringstream ss;
    for (map<string, Index>::const_iterator it =
             m_robot_util->m_name_to_id.begin();
         it != m_robot_util->m_name_to_id.end(); it++)
      ss << it->first << ", ";
    SEND_MSG("Possible joint names are: " + ss.str(), MSG_TYPE_INFO);
    return false;
  }
  id = static_cast<unsigned int>(jid);
  return true;
}
 
bool JointTrajectoryGenerator::convertForceNameToForceId(
    const std::string& name, unsigned int& id) {
  // Check if the joint name exists
  Index fid = m_robot_util->m_force_util.get_id_from_name(name);
  if (fid < 0) {
    SEND_MSG("The specified force name does not exist", MSG_TYPE_ERROR);
    std::stringstream ss;
    for (map<string, Index>::const_iterator it =
             m_robot_util->m_force_util.m_name_to_force_id.begin();
         it != m_robot_util->m_force_util.m_name_to_force_id.end(); it++)
      ss << it->first << ", ";
    SEND_MSG("Possible force names are: " + ss.str(), MSG_TYPE_INFO);
    return false;
  }
  id = (unsigned int)fid;
  return true;
}
 
bool JointTrajectoryGenerator::isJointInRange(unsigned int id, double q) {
  JointLimits jl = m_robot_util->get_joint_limits_from_id(id);
  if (q < jl.lower) {
    SEND_MSG("Joint " + m_robot_util->get_name_from_id(id) +
                 ", desired angle " + toString(q) +
                 " is smaller than lower limit " + toString(jl.lower),
             MSG_TYPE_ERROR);
    return false;
  }
  if (q > jl.upper) {
    SEND_MSG("Joint " + m_robot_util->get_name_from_id(id) +
                 ", desired angle " + toString(q) +
                 " is larger than upper limit " + toString(jl.upper),
             MSG_TYPE_ERROR);
    return false;
  }
  return true;
}
 
bool JointTrajectoryGenerator::isForceInRange(unsigned int id,
                                              const Eigen::VectorXd& f) {
  ForceLimits fl = m_robot_util->m_force_util.get_limits_from_id(id);
  for (unsigned int i = 0; i < 6; i++)
    if (f[i] < fl.lower[i] || f[i] > fl.upper[i]) {
      SEND_MSG("Desired force " + toString(i) +
                   " is out of range: " + toString(fl.lower[i]) + " < " +
                   toString(f[i]) + " < " + toString(fl.upper[i]),
               MSG_TYPE_ERROR);
      return false;
    }
  return true;
}
 
bool JointTrajectoryGenerator::isForceInRange(unsigned int id, int axis,
                                              double f) {
  ForceLimits fl = m_robot_util->m_force_util.get_limits_from_id(id);
  if (f < fl.lower[axis] || f > fl.upper[axis]) {
    SEND_MSG("Desired force " + toString(axis) +
                 " is out of range: " + toString(fl.lower[axis]) + " < " +
                 toString(f) + " < " + toString(fl.upper[axis]),
             MSG_TYPE_ERROR);
    return false;
  }
  return true;
}
 
/* ------------------------------------------------------------------- */
/* --- ENTITY -------------------------------------------------------- */
/* ------------------------------------------------------------------- */
 
void JointTrajectoryGenerator::display(std::ostream& os) const {
  os << "JointTrajectoryGenerator " << getName();
  try {
    getProfiler().report_all(3, os);
  } catch (ExceptionSignal e) {
  }
}
}  // namespace torque_control
}  // namespace sot
}  // namespace dynamicgraph