transform_listener.h

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/*
 * Copyright (c) 2008, Willow Garage, Inc.
 * All rights reserved.
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 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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#ifndef TF_TRANSFORMLISTENER_H
#define TF_TRANSFORMLISTENER_H
 
#include "sensor_msgs/PointCloud.h"
#include "std_msgs/Empty.h"
#include "tf/tfMessage.h"
#include "tf/tf.h"
#include "ros/ros.h"
#include "ros/callback_queue.h"
#include "ros/macros.h"
 
#include "tf/FrameGraph.h" //frame graph service
#include "boost/thread.hpp"
 
#include <tf2_ros/transform_listener.h>
 
 
namespace tf{
 
inline std::string getPrefixParam(ros::NodeHandle & nh) {
  std::string param; 
  if (!nh.searchParam("tf_prefix", param)) 
    return ""; 
  
  std::string return_val;
  nh.getParam(param, return_val);
  return return_val;
}
 
ROS_DEPRECATED std::string remap(const std::string& frame_id);
 
class TransformListener : public Transformer { //subscribes to message and automatically stores incoming data
 
public:
  TransformListener(ros::Duration max_cache_time = ros::Duration(DEFAULT_CACHE_TIME), bool spin_thread = true);
 
  TransformListener(const ros::NodeHandle& nh,
                    ros::Duration max_cache_time = ros::Duration(DEFAULT_CACHE_TIME), bool spin_thread = true);
  
  ~TransformListener();
 
  /* Methods from transformer unhiding them here */
  using Transformer::transformQuaternion;
  using Transformer::transformVector;
  using Transformer::transformPoint;
  using Transformer::transformPose;
 
 
  void transformQuaternion(const std::string& target_frame, const geometry_msgs::QuaternionStamped& stamped_in, geometry_msgs::QuaternionStamped& stamped_out) const;
  void transformVector(const std::string& target_frame, const geometry_msgs::Vector3Stamped& stamped_in, geometry_msgs::Vector3Stamped& stamped_out) const;
  void transformPoint(const std::string& target_frame, const geometry_msgs::PointStamped& stamped_in, geometry_msgs::PointStamped& stamped_out) const;
  void transformPose(const std::string& target_frame, const geometry_msgs::PoseStamped& stamped_in, geometry_msgs::PoseStamped& stamped_out) const;
 
  /* \brief Transform a Stamped Twist Message into the target frame 
   * This can throw all that lookupTransform can throw as well as tf::InvalidTransform */
  // http://www.ros.org/wiki/tf/Reviews/2010-03-12_API_Review
  //  void transformTwist(const std::string& target_frame, const geometry_msgs::TwistStamped& stamped_in, geometry_msgs::TwistStamped& stamped_out) const;
 
  void transformQuaternion(const std::string& target_frame, const ros::Time& target_time,
                           const geometry_msgs::QuaternionStamped& qin,
                           const std::string& fixed_frame, geometry_msgs::QuaternionStamped& qout) const;
  void transformVector(const std::string& target_frame, const ros::Time& target_time,
                       const geometry_msgs::Vector3Stamped& vin,
                           const std::string& fixed_frame, geometry_msgs::Vector3Stamped& vout) const;
  void transformPoint(const std::string& target_frame, const ros::Time& target_time,
                           const geometry_msgs::PointStamped& pin,
                           const std::string& fixed_frame, geometry_msgs::PointStamped& pout) const;
  void transformPose(const std::string& target_frame, const ros::Time& target_time,
                     const geometry_msgs::PoseStamped& pin,
                     const std::string& fixed_frame, geometry_msgs::PoseStamped& pout) const;
 
 
    void transformPointCloud(const std::string& target_frame, const sensor_msgs::PointCloud& pcin, sensor_msgs::PointCloud& pcout) const;
 
  void transformPointCloud(const std::string& target_frame, const ros::Time& target_time,
                           const sensor_msgs::PointCloud& pcin,
                           const std::string& fixed_frame, sensor_msgs::PointCloud& pcout) const;
 
 
 
 
  bool getFrames(tf::FrameGraph::Request&, tf::FrameGraph::Response& res)
  {
    res.dot_graph = allFramesAsDot();
    return true;
  }
 
  /* \brief Resolve frame_name into a frame_id using tf_prefix parameter */
  std::string resolve(const std::string& frame_name)
  {
    ros::NodeHandle n("~");
    std::string prefix = tf::getPrefixParam(n);
    return tf::resolve(prefix, frame_name);
  };
 
protected:
  bool ok() const;
 
private:
 
  // Must be above the listener
  ros::NodeHandle node_;
 
  tf2_ros::TransformListener tf2_listener_;
 
  void transformPointCloud(const std::string & target_frame, const Transform& transform, const ros::Time& target_time, const sensor_msgs::PointCloud& pcin, sensor_msgs::PointCloud& pcout) const;
 
};
}
 
#endif //TF_TRANSFORMLISTENER_H