compare_pose.cpp

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/*
 * Copyright (c) 2016-2017, the mcl_3dl authors
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#include <cmath>

#include <ros/ros.h>

#include <nav_msgs/Path.h>
#include <geometry_msgs/PoseWithCovarianceStamped.h>

#include <gtest/gtest.h>

TEST(ComparePose, Compare)
{
  ros::NodeHandle nh("~");

  nav_msgs::Path path;
  size_t i_path;

  double error_limit;
  nh.param("error_limit", error_limit, 0.3);

  const boost::function<void(const nav_msgs::Path::ConstPtr&)> cb_path =
      [&path, &i_path](const nav_msgs::Path::ConstPtr& msg) -> void
  {
    path = *msg;
    i_path = 0;
    fprintf(stderr, "compare_pose: reference received\n");
  };
  const boost::function<void(const geometry_msgs::PoseWithCovarianceStamped::ConstPtr&)> cb_pose =
      [&path, &i_path, &error_limit](const geometry_msgs::PoseWithCovarianceStamped::ConstPtr& msg) -> void
  {
    if (path.poses.size() > 0 && path.poses[i_path].header.stamp < ros::Time::now())
    {
      const float x_error = path.poses[i_path].pose.position.x - msg->pose.pose.position.x;
      const float y_error = path.poses[i_path].pose.position.y - msg->pose.pose.position.y;
      const float z_error = path.poses[i_path].pose.position.z - msg->pose.pose.position.z;
      const float error = std::sqrt(std::pow(x_error, 2) + std::pow(y_error, 2) + std::pow(z_error, 2));
      const float x_sigma = std::sqrt(msg->pose.covariance[0 * 6 + 0]);
      const float y_sigma = std::sqrt(msg->pose.covariance[1 * 6 + 1]);
      const float z_sigma = std::sqrt(msg->pose.covariance[2 * 6 + 2]);

      fprintf(stderr, "compare_pose[%lu/%lu]:\n",
              i_path, path.poses.size());
      fprintf(stderr, "  position error/limit=%0.3f/%0.3f\n", error, error_limit);
      fprintf(stderr, "  x error/3sigma=%0.3f/%0.3f\n", x_error, x_sigma * 3.0);
      fprintf(stderr, "  y error/3sigma=%0.3f/%0.3f\n", y_error, y_sigma * 3.0);
      fprintf(stderr, "  z error/3sigma=%0.3f/%0.3f\n", z_error, z_sigma * 3.0);

      i_path++;
      if (i_path >= path.poses.size())
        ros::shutdown();

      ASSERT_FALSE(error > error_limit)
          << "Position error is larger then expected.";
      ASSERT_FALSE(fabs(x_error) > x_sigma * 3.0)
          << "Estimated variance is too small to continue tracking. (x)";
      ASSERT_FALSE(fabs(y_error) > y_sigma * 3.0)
          << "Estimated variance is too small to continue tracking. (y)";
      ASSERT_FALSE(fabs(z_error) > z_sigma * 3.0)
          << "Estimated variance is too small to continue tracking. (z)";
    }
  };

  ros::Subscriber sub_pose = nh.subscribe("/amcl_pose", 1, cb_pose);
  ros::Subscriber sub_path = nh.subscribe("poses_ref", 1, cb_path);

  ros::Rate wait(10);

  while (ros::ok())
  {
    ros::spinOnce();
    wait.sleep();
  }
  fprintf(stderr, "compare_pose finished\n");
}

int main(int argc, char** argv)
{
  testing::InitGoogleTest(&argc, argv);
  ros::init(argc, argv, "compare_pose");

  return RUN_ALL_TESTS();
}