ompl_plugin.cpp

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/* Author: Ioan Sucan, Dave Coleman */

#include <moveit/ompl_interface/ompl_interface.h>
#include <moveit/planning_interface/planning_interface.h>
#include <moveit/planning_scene/planning_scene.h>
#include <moveit/robot_state/conversions.h>
#include <moveit/profiler/profiler.h>
#include <class_loader/class_loader.h>

#include <dynamic_reconfigure/server.h>
#include "moveit_planners_ompl/OMPLDynamicReconfigureConfig.h"

#include <moveit_msgs/DisplayRobotState.h>
#include <moveit_msgs/DisplayTrajectory.h>

namespace ompl_interface
{
using namespace moveit_planners_ompl;

class OMPLPlannerManager : public planning_interface::PlannerManager
{
public:

  OMPLPlannerManager() : planning_interface::PlannerManager(),
                         nh_("~"),
                         display_random_valid_states_(false)
  {
  }

  virtual bool initialize(const robot_model::RobotModelConstPtr& model, const std::string &ns)
  {
    if (!ns.empty())
      nh_ = ros::NodeHandle(ns);
    ompl_interface_.reset(new OMPLInterface(model, nh_));
    std::string ompl_ns = ns.empty() ? "ompl" : ns + "/ompl";
    dynamic_reconfigure_server_.reset(new dynamic_reconfigure::Server<OMPLDynamicReconfigureConfig>(ros::NodeHandle(nh_, ompl_ns)));
    dynamic_reconfigure_server_->setCallback(boost::bind(&OMPLPlannerManager::dynamicReconfigureCallback, this, _1, _2));
    return true;
  }

  virtual bool canServiceRequest(const moveit_msgs::MotionPlanRequest &req) const
  {
    return req.trajectory_constraints.constraints.empty();
  }

  virtual std::string getDescription() const
  {
    return "OMPL";
  }

  virtual void getPlanningAlgorithms(std::vector<std::string> &algs) const
  {
    const planning_interface::PlannerConfigurationMap &pconfig = ompl_interface_->getPlannerConfigurations();
    algs.clear();
    algs.reserve(pconfig.size());
    for (planning_interface::PlannerConfigurationMap::const_iterator it = pconfig.begin() ; it != pconfig.end() ; ++it)
      algs.push_back(it->first);
  }

  virtual void setPlannerConfigurations(const planning_interface::PlannerConfigurationMap &pconfig)
  {
    // this call can add a few more configs than we pass in (adds defaults)
    ompl_interface_->setPlannerConfigurations(pconfig);
    // so we read the configs instead of just setting pconfig
    PlannerManager::setPlannerConfigurations(ompl_interface_->getPlannerConfigurations());
  }

  virtual planning_interface::PlanningContextPtr getPlanningContext(const planning_scene::PlanningSceneConstPtr& planning_scene,
                                                                    const planning_interface::MotionPlanRequest &req,
                                                                    moveit_msgs::MoveItErrorCodes &error_code) const
  {
    return ompl_interface_->getPlanningContext(planning_scene, req, error_code);
  }

private:

    /*
    bool r = ompl_interface_->solve(planning_scene, req, res);
    if (!planner_data_link_name_.empty())
      displayPlannerData(planning_scene, planner_data_link_name_);
    return r;
    */

    /*
    bool r = ompl_interface_->solve(planning_scene, req, res);
    if (!planner_data_link_name_.empty())
      displayPlannerData(planning_scene, planner_data_link_name_);
    return r;
    */

  /*
  void displayRandomValidStates()
  {
    ompl_interface::ModelBasedPlanningContextPtr pc = ompl_interface_->getLastPlanningContext();
    if (!pc || !pc->getPlanningScene())
    {
      ROS_ERROR("No planning context to sample states for");
      return;
    }
    ROS_INFO_STREAM("Displaying states for context " << pc->getName());
    const og::SimpleSetup &ss = pc->getOMPLSimpleSetup();
    ob::ValidStateSamplerPtr vss = ss.getSpaceInformation()->allocValidStateSampler();
    robot_state::RobotState kstate = pc->getPlanningScene()->getCurrentState();
    ob::ScopedState<> rstate1(ss.getStateSpace());
    ob::ScopedState<> rstate2(ss.getStateSpace());
    ros::WallDuration wait(2);
    unsigned int n = 0;
    std::vector<ob::State*> sts;
    if (vss->sample(rstate2.get()))
      while (display_random_valid_states_)
      {
        if (!vss->sampleNear(rstate1.get(), rstate2.get(), 10000000))
          continue;
        pc->getOMPLStateSpace()->copyToRobotState(kstate, rstate1.get());
        kstate.getJointStateGroup(pc->getJointModelGroupName())->updateLinkTransforms();
        moveit_msgs::DisplayRobotState state_msg;
        robot_state::robotStateToRobotStateMsg(kstate, state_msg.state);
        pub_valid_states_.publish(state_msg);
        n = (n + 1) % 2;
        if (n == 0)
        {
          robot_trajectory::RobotTrajectory traj(pc->getRobotModel(), pc->getJointModelGroupName());
          unsigned int g = ss.getSpaceInformation()->getMotionStates(rstate1.get(), rstate2.get(), sts, 10, true, true);
          ROS_INFO("Generated a motion with %u states", g);
          for (std::size_t i = 0 ; i < g ; ++i)
          {
            pc->getOMPLStateSpace()->copyToRobotState(kstate, sts[i]);
            traj.addSuffixWayPoint(kstate, 0.0);
          }
          moveit_msgs::DisplayTrajectory msg;
          msg.model_id = pc->getRobotModel()->getName();
          msg.trajectory.resize(1);
          traj.getRobotTrajectoryMsg(msg.trajectory[0]);
          robot_state::robotStateToRobotStateMsg(traj.getFirstWayPoint(), msg.trajectory_start);
          pub_valid_traj_.publish(msg);
        }
        rstate2 = rstate1;
        wait.sleep();
      }
  }

  void displayPlannerData(const planning_scene::PlanningSceneConstPtr& planning_scene,
                          const std::string &link_name) const
  {
    ompl_interface::ModelBasedPlanningContextPtr pc = ompl_interface_->getLastPlanningContext();
    if (pc)
    {
      ompl::base::PlannerData pd(pc->getOMPLSimpleSetup().getSpaceInformation());
      pc->getOMPLSimpleSetup().getPlannerData(pd);
      robot_state::RobotState kstate = planning_scene->getCurrentState();
      visualization_msgs::MarkerArray arr;
      std_msgs::ColorRGBA color;
      color.r = 1.0f;
      color.g = 0.25f;
      color.b = 1.0f;
      color.a = 1.0f;
      unsigned int nv = pd.numVertices();
      for (unsigned int i = 0 ; i < nv ; ++i)
      {
        pc->getOMPLStateSpace()->copyToRobotState(kstate, pd.getVertex(i).getState());
        kstate.getJointStateGroup(pc->getJointModelGroupName())->updateLinkTransforms();
        const Eigen::Vector3d &pos = kstate.getLinkState(link_name)->getGlobalLinkTransform().translation();

        visualization_msgs::Marker mk;
        mk.header.stamp = ros::Time::now();
        mk.header.frame_id = planning_scene->getPlanningFrame();
        mk.ns = "planner_data";
        mk.id = i;
        mk.type = visualization_msgs::Marker::SPHERE;
        mk.action = visualization_msgs::Marker::ADD;
        mk.pose.position.x = pos.x();
        mk.pose.position.y = pos.y();
        mk.pose.position.z = pos.z();
        mk.pose.orientation.w = 1.0;
        mk.scale.x = mk.scale.y = mk.scale.z = 0.025;
        mk.color = color;
        mk.lifetime = ros::Duration(30.0);
        arr.markers.push_back(mk);
      }
      pub_markers_.publish(arr);
    }
  }
  */

  void dynamicReconfigureCallback(OMPLDynamicReconfigureConfig &config, uint32_t level)
  {
    if (config.link_for_exploration_tree.empty() && !planner_data_link_name_.empty())
    {
      pub_markers_.shutdown();
      planner_data_link_name_.clear();
      ROS_INFO("Not displaying OMPL exploration data structures.");
    }
    else
      if (!config.link_for_exploration_tree.empty() && planner_data_link_name_.empty())
      {
        pub_markers_ = nh_.advertise<visualization_msgs::MarkerArray>("ompl_planner_data_marker_array", 5);
        planner_data_link_name_ = config.link_for_exploration_tree;
        ROS_INFO("Displaying OMPL exploration data structures for %s", planner_data_link_name_.c_str());
      }

    ompl_interface_->simplifySolutions(config.simplify_solutions);
    ompl_interface_->getPlanningContextManager().setMaximumSolutionSegmentLength(config.maximum_waypoint_distance);
    ompl_interface_->getPlanningContextManager().setMinimumWaypointCount(config.minimum_waypoint_count);
    if (display_random_valid_states_ && !config.display_random_valid_states)
    {
      display_random_valid_states_ = false;
      if (pub_valid_states_thread_)
      {
        pub_valid_states_thread_->join();
        pub_valid_states_thread_.reset();
      }
      pub_valid_states_.shutdown();
      pub_valid_traj_.shutdown();
    }
    else
      if (!display_random_valid_states_ && config.display_random_valid_states)
      {
        pub_valid_states_ = nh_.advertise<moveit_msgs::DisplayRobotState>("ompl_planner_valid_states", 5);
        pub_valid_traj_ = nh_.advertise<moveit_msgs::DisplayTrajectory>("ompl_planner_valid_trajectories", 5);
    display_random_valid_states_ = true;
        //    pub_valid_states_thread_.reset(new boost::thread(boost::bind(&OMPLPlannerManager::displayRandomValidStates, this)));
      }
  }

  ros::NodeHandle nh_;
  boost::scoped_ptr<dynamic_reconfigure::Server<OMPLDynamicReconfigureConfig> > dynamic_reconfigure_server_;
  boost::scoped_ptr<OMPLInterface> ompl_interface_;
  boost::scoped_ptr<boost::thread> pub_valid_states_thread_;
  bool display_random_valid_states_;
  ros::Publisher pub_markers_;
  ros::Publisher pub_valid_states_;
  ros::Publisher pub_valid_traj_;
  std::string planner_data_link_name_;
};

} // ompl_interface

CLASS_LOADER_REGISTER_CLASS(ompl_interface::OMPLPlannerManager, planning_interface::PlannerManager);