98 lines
3.6 KiB
C++
98 lines
3.6 KiB
C++
// Copyright (C) 2007 Ruben Smits <ruben dot smits at mech dot kuleuven dot be>
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// Version: 1.0
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// Author: Ruben Smits <ruben dot smits at mech dot kuleuven dot be>
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// Maintainer: Ruben Smits <ruben dot smits at mech dot kuleuven dot be>
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// URL: http://www.orocos.org/kdl
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#ifndef KDLCHAINIKSOLVERPOS_NR_HPP
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#define KDLCHAINIKSOLVERPOS_NR_HPP
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#include "chainiksolver.hpp"
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#include "chainfksolver.hpp"
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namespace KDL {
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/**
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* Implementation of a general inverse position kinematics
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* algorithm based on Newton-Raphson iterations to calculate the
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* position transformation from Cartesian to joint space of a general
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* KDL::Chain.
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*
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* @ingroup KinematicFamily
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*/
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class ChainIkSolverPos_NR : public ChainIkSolverPos
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{
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public:
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static const int E_IKSOLVER_FAILED = -100; //! Child IK solver vel failed
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static const int E_FKSOLVERPOS_FAILED = -101; //! Child FK solver failed
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/**
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* Constructor of the solver, it needs the chain, a forward
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* position kinematics solver and an inverse velocity
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* kinematics solver for that chain.
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*
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* @param chain the chain to calculate the inverse position for
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* @param fksolver a forward position kinematics solver
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* @param iksolver an inverse velocity kinematics solver
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* @param maxiter the maximum Newton-Raphson iterations,
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* default: 100
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* @param eps the precision for the position, used to end the
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* iterations, default: epsilon (defined in kdl.hpp)
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*
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* @return
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*/
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ChainIkSolverPos_NR(const Chain& chain,ChainFkSolverPos& fksolver,ChainIkSolverVel& iksolver,
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unsigned int maxiter=100,double eps=1e-6);
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~ChainIkSolverPos_NR();
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/**
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* Find an output joint pose \a q_out, given a starting joint pose
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* \a q_init and a desired cartesian pose \a p_in
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*
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* @return:
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* E_NOERROR=solution converged to <eps in maxiter
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* E_DEGRADED=solution converged to <eps in maxiter, but solution is
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* degraded in quality (e.g. pseudo-inverse in iksolver is singular)
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* E_IKSOLVER_FAILED=velocity solver failed
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* E_NO_CONVERGE=solution did not converge (e.g. large displacement, low iterations)
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*/
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virtual int CartToJnt(const JntArray& q_init, const Frame& p_in, JntArray& q_out);
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/// @copydoc KDL::SolverI::strError()
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virtual const char* strError(const int error) const;
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/// @copydoc KDL::SolverI::updateInternalDataStructures
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virtual void updateInternalDataStructures();
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private:
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const Chain& chain;
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unsigned int nj;
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ChainIkSolverVel& iksolver;
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ChainFkSolverPos& fksolver;
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JntArray delta_q;
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Frame f;
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Twist delta_twist;
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unsigned int maxiter;
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double eps;
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};
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}
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#endif
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