kdl_kinematics_plugin.h

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/* Author: Sachin Chitta, David Lu!!, Ugo Cupcic */

#ifndef MOVEIT_ROS_PLANNING_KDL_KINEMATICS_PLUGIN_
#define MOVEIT_ROS_PLANNING_KDL_KINEMATICS_PLUGIN_

// ROS
#include <ros/ros.h>
#include <random_numbers/random_numbers.h>

// ROS msgs
#include <geometry_msgs/PoseStamped.h>
#include <moveit_msgs/GetPositionFK.h>
#include <moveit_msgs/GetPositionIK.h>
#include <moveit_msgs/KinematicSolverInfo.h>
#include <moveit_msgs/MoveItErrorCodes.h>

// KDL
#include <kdl/jntarray.hpp>
#include <kdl/chainiksolvervel_pinv.hpp>
#include <kdl/chainiksolverpos_nr_jl.hpp>
#include <kdl/chainfksolverpos_recursive.hpp>
#include <moveit/kdl_kinematics_plugin/chainiksolver_pos_nr_jl_mimic.hpp>
#include <moveit/kdl_kinematics_plugin/chainiksolver_vel_pinv_mimic.hpp>
#include <moveit/kdl_kinematics_plugin/joint_mimic.hpp>

// MoveIt!
#include <moveit/kinematics_base/kinematics_base.h>
#include <moveit/robot_model/robot_model.h>
#include <moveit/robot_state/robot_state.h>

namespace kdl_kinematics_plugin
{
class KDLKinematicsPlugin : public kinematics::KinematicsBase
{
public:
  KDLKinematicsPlugin();

  virtual bool
  getPositionIK(const geometry_msgs::Pose& ik_pose, const std::vector<double>& ik_seed_state,
                std::vector<double>& solution, moveit_msgs::MoveItErrorCodes& error_code,
                const kinematics::KinematicsQueryOptions& options = kinematics::KinematicsQueryOptions()) const;

  virtual bool
  searchPositionIK(const geometry_msgs::Pose& ik_pose, const std::vector<double>& ik_seed_state, double timeout,
                   std::vector<double>& solution, moveit_msgs::MoveItErrorCodes& error_code,
                   const kinematics::KinematicsQueryOptions& options = kinematics::KinematicsQueryOptions()) const;

  virtual bool
  searchPositionIK(const geometry_msgs::Pose& ik_pose, const std::vector<double>& ik_seed_state, double timeout,
                   const std::vector<double>& consistency_limits, std::vector<double>& solution,
                   moveit_msgs::MoveItErrorCodes& error_code,
                   const kinematics::KinematicsQueryOptions& options = kinematics::KinematicsQueryOptions()) const;

  virtual bool
  searchPositionIK(const geometry_msgs::Pose& ik_pose, const std::vector<double>& ik_seed_state, double timeout,
                   std::vector<double>& solution, const IKCallbackFn& solution_callback,
                   moveit_msgs::MoveItErrorCodes& error_code,
                   const kinematics::KinematicsQueryOptions& options = kinematics::KinematicsQueryOptions()) const;

  virtual bool
  searchPositionIK(const geometry_msgs::Pose& ik_pose, const std::vector<double>& ik_seed_state, double timeout,
                   const std::vector<double>& consistency_limits, std::vector<double>& solution,
                   const IKCallbackFn& solution_callback, moveit_msgs::MoveItErrorCodes& error_code,
                   const kinematics::KinematicsQueryOptions& options = kinematics::KinematicsQueryOptions()) const;

  virtual bool getPositionFK(const std::vector<std::string>& link_names, const std::vector<double>& joint_angles,
                             std::vector<geometry_msgs::Pose>& poses) const;

  virtual bool initialize(const std::string& robot_description, const std::string& group_name,
                          const std::string& base_name, const std::string& tip_name, double search_discretization);

  const std::vector<std::string>& getJointNames() const;

  const std::vector<std::string>& getLinkNames() const;

protected:
  bool searchPositionIK(const geometry_msgs::Pose& ik_pose, const std::vector<double>& ik_seed_state, double timeout,
                        std::vector<double>& solution, const IKCallbackFn& solution_callback,
                        moveit_msgs::MoveItErrorCodes& error_code, const std::vector<double>& consistency_limits,
                        const kinematics::KinematicsQueryOptions& options = kinematics::KinematicsQueryOptions()) const;

  virtual bool setRedundantJoints(const std::vector<unsigned int>& redundant_joint_indices);

private:
  bool timedOut(const ros::WallTime& start_time, double duration) const;

  bool checkConsistency(const KDL::JntArray& seed_state, const std::vector<double>& consistency_limit,
                        const KDL::JntArray& solution) const;

  int getJointIndex(const std::string& name) const;

  int getKDLSegmentIndex(const std::string& name) const;

  void getRandomConfiguration(KDL::JntArray& jnt_array, bool lock_redundancy) const;

  void getRandomConfiguration(const KDL::JntArray& seed_state, const std::vector<double>& consistency_limits,
                              KDL::JntArray& jnt_array, bool lock_redundancy) const;

  bool isRedundantJoint(unsigned int index) const;

  bool active_; 
  moveit_msgs::KinematicSolverInfo ik_chain_info_; 
  moveit_msgs::KinematicSolverInfo fk_chain_info_; 
  KDL::Chain kdl_chain_;

  unsigned int dimension_; 
  KDL::JntArray joint_min_, joint_max_; 
  mutable random_numbers::RandomNumberGenerator random_number_generator_;

  robot_model::RobotModelPtr robot_model_;

  robot_state::RobotStatePtr state_, state_2_;

  int num_possible_redundant_joints_;
  std::vector<unsigned int> redundant_joints_map_index_;

  // Storage required for when the set of redundant joints is reset
  bool position_ik_;  // whether this solver is only being used for position ik
  robot_model::JointModelGroup* joint_model_group_;
  double max_solver_iterations_;
  double epsilon_;
  std::vector<JointMimic> mimic_joints_;
};
}

#endif