rigid_body_publisher.cpp

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/*
 * Copyright (c) 2018, Houston Mechatronics Inc., JD Yamokoski
 * Copyright (c) 2012, Clearpath Robotics, Inc., Alex Bencz
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
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 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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#include <mocap_optitrack/rigid_body_publisher.h>
 
#include <geometry_msgs/PoseStamped.h>
#include <geometry_msgs/Pose2D.h>
#include <nav_msgs/Odometry.h>
#include <vector>
 
namespace mocap_optitrack
{
 
namespace utilities
{
geometry_msgs::PoseStamped getRosPose(RigidBody const& body, const Version& coordinatesVersion)
{
  geometry_msgs::PoseStamped poseStampedMsg;
  if (coordinatesVersion < Version("2.0") && coordinatesVersion >= Version("1.7"))
  {
    // Motive 1.7+ and < Motive 2.0 coordinate system
    poseStampedMsg.pose.position.x = -body.pose.position.x;
    poseStampedMsg.pose.position.y = body.pose.position.z;
    poseStampedMsg.pose.position.z = body.pose.position.y;
 
    poseStampedMsg.pose.orientation.x = -body.pose.orientation.x;
    poseStampedMsg.pose.orientation.y = body.pose.orientation.z;
    poseStampedMsg.pose.orientation.z = body.pose.orientation.y;
    poseStampedMsg.pose.orientation.w = body.pose.orientation.w;
  }
  else
  {
    // y & z axes are swapped in the Optitrack coordinate system
    // Also compatible with versions > Motive 2.0
    poseStampedMsg.pose.position.x = body.pose.position.x;
    poseStampedMsg.pose.position.y = -body.pose.position.z;
    poseStampedMsg.pose.position.z = body.pose.position.y;
 
    poseStampedMsg.pose.orientation.x = body.pose.orientation.x;
    poseStampedMsg.pose.orientation.y = -body.pose.orientation.z;
    poseStampedMsg.pose.orientation.z = body.pose.orientation.y;
    poseStampedMsg.pose.orientation.w = body.pose.orientation.w;
  }
  return poseStampedMsg;
}
nav_msgs::Odometry getRosOdom(RigidBody const& body, const Version& coordinatesVersion)
{
  nav_msgs::Odometry OdometryMsg;
  if (coordinatesVersion < Version("2.0") && coordinatesVersion >= Version("1.7"))
  {
    // Motive 1.7+ and < Motive 2.0 coordinate system
    OdometryMsg.pose.pose.position.x = -body.pose.position.x;
    OdometryMsg.pose.pose.position.y = body.pose.position.z;
    OdometryMsg.pose.pose.position.z = body.pose.position.y;
 
    OdometryMsg.pose.pose.orientation.x = -body.pose.orientation.x;
    OdometryMsg.pose.pose.orientation.y = body.pose.orientation.z;
    OdometryMsg.pose.pose.orientation.z = body.pose.orientation.y;
    OdometryMsg.pose.pose.orientation.w = body.pose.orientation.w;
  }
  else
  {
    // y & z axes are swapped in the Optitrack coordinate system
    // Also compatible with versions > Motive 2.0
    OdometryMsg.pose.pose.position.x = body.pose.position.x;
    OdometryMsg.pose.pose.position.y = -body.pose.position.z;
    OdometryMsg.pose.pose.position.z = body.pose.position.y;
 
    OdometryMsg.pose.pose.orientation.x = body.pose.orientation.x;
    OdometryMsg.pose.pose.orientation.y = -body.pose.orientation.z;
    OdometryMsg.pose.pose.orientation.z = body.pose.orientation.y;
    OdometryMsg.pose.pose.orientation.w = body.pose.orientation.w;
  }
  return OdometryMsg;
}
}  // namespace utilities
 
RigidBodyPublisher::RigidBodyPublisher(ros::NodeHandle &nh,
                                       Version const& natNetVersion,
                                       PublisherConfiguration const& config) :
  config(config)
{
  if (config.publishPose)
    posePublisher = nh.advertise<geometry_msgs::PoseStamped>(config.poseTopicName, 1000);
 
  if (config.publishPose2d)
    pose2dPublisher = nh.advertise<geometry_msgs::Pose2D>(config.pose2dTopicName, 1000);
 
  if (config.publishOdom)
    odomPublisher = nh.advertise<nav_msgs::Odometry>(config.odomTopicName, 1000);
 
  // Motive 1.7+ uses a new coordinate system
  // natNetVersion = (natNetVersion >= Version("1.7"));
  coordinatesVersion = natNetVersion;
}
 
RigidBodyPublisher::~RigidBodyPublisher()
{
}
 
void RigidBodyPublisher::publish(ros::Time const& time, RigidBody const& body)
{
  // don't do anything if no new data was provided
  if (!body.hasValidData())
  {
    return;
  }
 
  // NaN?
  if (body.pose.position.x != body.pose.position.x)
  {
    return;
  }
 
  geometry_msgs::PoseStamped pose = utilities::getRosPose(body, coordinatesVersion);
  nav_msgs::Odometry odom =  utilities::getRosOdom(body, coordinatesVersion);
 
  pose.header.stamp = time;
  odom.header.stamp = time;
 
  if (config.publishPose)
  {
    pose.header.frame_id = config.parentFrameId;
    posePublisher.publish(pose);
  }
 
  tf::Quaternion q(pose.pose.orientation.x,
                   pose.pose.orientation.y,
                   pose.pose.orientation.z,
                   pose.pose.orientation.w);
 
  if (config.publishOdom)
  {
    odom.header.frame_id = config.parentFrameId;
    odom.child_frame_id = config.childFrameId;
    odomPublisher.publish(odom);
  }
  if (config.publishOdom)
  {
    odom.header.frame_id = config.parentFrameId;
    odom.child_frame_id = config.childFrameId;
    odomPublisher.publish(odom);
  }
  // publish 2D pose
  if (config.publishPose2d)
  {
    geometry_msgs::Pose2D pose2d;
    pose2d.x = pose.pose.position.x;
    pose2d.y = pose.pose.position.y;
    pose2d.theta = tf::getYaw(q);
    pose2dPublisher.publish(pose2d);
  }
 
  if (config.publishTf)
  {
    // publish transform
    tf::Transform transform;
    transform.setOrigin(tf::Vector3(pose.pose.position.x,
                                    pose.pose.position.y,
                                    pose.pose.position.z));
 
    // Handle different coordinate systems (Arena vs. rviz)
    transform.setRotation(q);
    tfPublisher.sendTransform(tf::StampedTransform(transform,
                              time,
                              config.parentFrameId,
                              config.childFrameId));
  }
}
 
 
RigidBodyPublishDispatcher::RigidBodyPublishDispatcher(
  ros::NodeHandle &nh,
  Version const& natNetVersion,
  PublisherConfigurations const& configs)
{
  for (auto const& config : configs)
  {
    rigidBodyPublisherMap[config.rigidBodyId] =
      RigidBodyPublisherPtr(new RigidBodyPublisher(nh, natNetVersion, config));
  }
}
 
void RigidBodyPublishDispatcher::publish(
  ros::Time const& time,
  std::vector<RigidBody> const& rigidBodies)
{
  for (auto const& rigidBody : rigidBodies)
  {
    auto const& iter = rigidBodyPublisherMap.find(rigidBody.bodyId);
 
    if (iter != rigidBodyPublisherMap.end())
    {
      (*iter->second).publish(time, rigidBody);
    }
  }
}
 
}  // namespace mocap_optitrack