trajectory_visualization.hpp

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#pragma once
 
#include <stomp_moveit/stomp_moveit_task.hpp>
#include <stomp_moveit/conversion_functions.hpp>
 
#include <moveit/planning_scene/planning_scene.h>
#include <moveit/robot_model/robot_model.h>
#include <std_msgs/msg/color_rgba.hpp>
#include <tf2_eigen/tf2_eigen.hpp>
#include <visualization_msgs/msg/marker.hpp>
#include <visualization_msgs/msg/marker_array.hpp>
 
namespace stomp_moveit
{
namespace visualization
{
 
namespace
{
const auto GREEN = [](double a) {
  std_msgs::msg::ColorRGBA color;
  color.r = 0.1;
  color.g = 0.8;
  color.b = 0.1;
  color.a = a;
  return color;
};
 
visualization_msgs::msg::MarkerArray
createTrajectoryMarkerArray(const robot_trajectory::RobotTrajectory& robot_trajectory,
                            const moveit::core::LinkModel* ee_parent_link,
                            const std_msgs::msg::ColorRGBA& color = GREEN(1.0))
{
  visualization_msgs::msg::MarkerArray markers_array;
 
  // Initialize Sphere Marker
  visualization_msgs::msg::Marker sphere_marker;
  sphere_marker.header.frame_id = robot_trajectory.getRobotModel()->getModelFrame();
  sphere_marker.ns = "Path";
  sphere_marker.type = visualization_msgs::msg::Marker::SPHERE;
  sphere_marker.action = visualization_msgs::msg::Marker::ADD;
  sphere_marker.lifetime = rclcpp::Duration(0, 0);  // Infinite lifetime
  sphere_marker.scale.x = 0.01;
  sphere_marker.scale.y = 0.01;
  sphere_marker.scale.z = 0.01;
  sphere_marker.color = color;
  sphere_marker.frame_locked = false;
 
  // Visualize end effector positions of Cartesian path as sphere markers
  for (std::size_t index = 0; index < robot_trajectory.getWayPointCount(); index++)
  {
    const Eigen::Isometry3d& tip_pose = robot_trajectory.getWayPoint(index).getGlobalLinkTransform(ee_parent_link);
    sphere_marker.pose = tf2::toMsg(tip_pose);
    sphere_marker.id = index;
 
    markers_array.markers.push_back(sphere_marker);
  }
 
  return markers_array;
}
}  // namespace
 
PostIterationFn
getIterationPathPublisher(const rclcpp::Publisher<visualization_msgs::msg::MarkerArray>::SharedPtr& marker_publisher,
                          const std::shared_ptr<const planning_scene::PlanningScene>& planning_scene,
                          const moveit::core::JointModelGroup* group)
{
  assert(group != nullptr);
 
  if (marker_publisher == nullptr)
  {
    return [](int /*iteration_number*/, double /*cost*/, const Eigen::MatrixXd& /*values*/) {
      // Do nothing
    };
  }
 
  auto path_publisher = [marker_publisher, group,
                         reference_state = moveit::core::RobotState(planning_scene->getCurrentState())](
                            int /*iteration_number*/, double /*cost*/, const Eigen::MatrixXd& values) {
    static thread_local robot_trajectory::RobotTrajectory trajectory(reference_state.getRobotModel(), group);
    fillRobotTrajectory(values, reference_state, trajectory);
 
    const moveit::core::LinkModel* ee_parent_link = group->getOnlyOneEndEffectorTip();
 
    if (ee_parent_link != nullptr && !trajectory.empty())
    {
      marker_publisher->publish(createTrajectoryMarkerArray(trajectory, ee_parent_link, GREEN(0.5)));
    }
  };
 
  return path_publisher;
}
 
DoneFn
getSuccessTrajectoryPublisher(const rclcpp::Publisher<visualization_msgs::msg::MarkerArray>::SharedPtr& marker_publisher,
                              const std::shared_ptr<const planning_scene::PlanningScene>& planning_scene,
                              const moveit::core::JointModelGroup* group)
{
  assert(group != nullptr);
 
  if (marker_publisher == nullptr)
  {
    return [](bool /*success*/, int /*total_iterations*/, double /*final_cost*/, const Eigen::MatrixXd& /*values*/) {
      // Do nothing
    };
  }
 
  auto path_publisher =
      [marker_publisher, group, reference_state = moveit::core::RobotState(planning_scene->getCurrentState())](
          bool success, int /*total_iterations*/, double /*final_cost*/, const Eigen::MatrixXd& values) {
        static thread_local robot_trajectory::RobotTrajectory trajectory(reference_state.getRobotModel(), group);
        if (success)
        {
          fillRobotTrajectory(values, reference_state, trajectory);
 
          const moveit::core::LinkModel* ee_parent_link = group->getOnlyOneEndEffectorTip();
 
          if (ee_parent_link != nullptr && !trajectory.empty())
          {
            marker_publisher->publish(createTrajectoryMarkerArray(trajectory, ee_parent_link));
          }
        }
      };
 
  return path_publisher;
}
}  // namespace visualization
}  // namespace stomp_moveit