Rename Twist->TwistStamped (ros-controls#1393)

Author: christophfroehlich

diff_drive_controller/include/diff_drive_controller/diff_drive_controller.hpp

@@ -45,7 +45,7 @@ namespace diff_drive_controller
 {
 class DiffDriveController : public controller_interface::ControllerInterface
 {
-  using Twist = geometry_msgs::msg::TwistStamped;
+  using TwistStamped = geometry_msgs::msg::TwistStamped;
 
 public:
   DIFF_DRIVE_CONTROLLER_PUBLIC
@@ -128,20 +128,20 @@ class DiffDriveController : public controller_interface::ControllerInterface
     realtime_odometry_transform_publisher_ = nullptr;
 
   bool subscriber_is_active_ = false;
-  rclcpp::Subscription<Twist>::SharedPtr velocity_command_subscriber_ = nullptr;
+  rclcpp::Subscription<TwistStamped>::SharedPtr velocity_command_subscriber_ = nullptr;
 
-  realtime_tools::RealtimeBox<std::shared_ptr<Twist>> received_velocity_msg_ptr_{nullptr};
+  realtime_tools::RealtimeBox<std::shared_ptr<TwistStamped>> received_velocity_msg_ptr_{nullptr};
 
-  std::queue<Twist> previous_commands_;  // last two commands
+  std::queue<TwistStamped> previous_commands_;  // last two commands
 
   // speed limiters
   SpeedLimiter limiter_linear_;
   SpeedLimiter limiter_angular_;
 
   bool publish_limited_velocity_ = false;
-  std::shared_ptr<rclcpp::Publisher<Twist>> limited_velocity_publisher_ = nullptr;
-  std::shared_ptr<realtime_tools::RealtimePublisher<Twist>> realtime_limited_velocity_publisher_ =
-    nullptr;
+  std::shared_ptr<rclcpp::Publisher<TwistStamped>> limited_velocity_publisher_ = nullptr;
+  std::shared_ptr<realtime_tools::RealtimePublisher<TwistStamped>>
+    realtime_limited_velocity_publisher_ = nullptr;
 
   rclcpp::Time previous_update_timestamp_{0};
 

diff_drive_controller/src/diff_drive_controller.cpp

@@ -111,7 +111,7 @@ controller_interface::return_type DiffDriveController::update(
     return controller_interface::return_type::OK;
   }
 
-  std::shared_ptr<Twist> last_command_msg;
+  std::shared_ptr<TwistStamped> last_command_msg;
   received_velocity_msg_ptr_.get(last_command_msg);
 
   if (last_command_msg == nullptr)
@@ -130,7 +130,7 @@ controller_interface::return_type DiffDriveController::update(
 
   // command may be limited further by SpeedLimit,
   // without affecting the stored twist command
-  Twist command = *last_command_msg;
+  TwistStamped command = *last_command_msg;
   double & linear_command = command.twist.linear.x;
   double & angular_command = command.twist.angular.z;
 
@@ -318,23 +318,24 @@ controller_interface::CallbackReturn DiffDriveController::on_configure(
 
   if (publish_limited_velocity_)
   {
-    limited_velocity_publisher_ =
-      get_node()->create_publisher<Twist>(DEFAULT_COMMAND_OUT_TOPIC, rclcpp::SystemDefaultsQoS());
+    limited_velocity_publisher_ = get_node()->create_publisher<TwistStamped>(
+      DEFAULT_COMMAND_OUT_TOPIC, rclcpp::SystemDefaultsQoS());
     realtime_limited_velocity_publisher_ =
-      std::make_shared<realtime_tools::RealtimePublisher<Twist>>(limited_velocity_publisher_);
+      std::make_shared<realtime_tools::RealtimePublisher<TwistStamped>>(
+        limited_velocity_publisher_);
   }
 
-  const Twist empty_twist;
-  received_velocity_msg_ptr_.set(std::make_shared<Twist>(empty_twist));
+  const TwistStamped empty_twist;
+  received_velocity_msg_ptr_.set(std::make_shared<TwistStamped>(empty_twist));
 
   // Fill last two commands with default constructed commands
   previous_commands_.emplace(empty_twist);
   previous_commands_.emplace(empty_twist);
 
   // initialize command subscriber
-  velocity_command_subscriber_ = get_node()->create_subscription<Twist>(
+  velocity_command_subscriber_ = get_node()->create_subscription<TwistStamped>(
     DEFAULT_COMMAND_TOPIC, rclcpp::SystemDefaultsQoS(),
-    [this](const std::shared_ptr<Twist> msg) -> void
+    [this](const std::shared_ptr<TwistStamped> msg) -> void
     {
       if (!subscriber_is_active_)
       {
@@ -475,7 +476,7 @@ controller_interface::CallbackReturn DiffDriveController::on_cleanup(
     return controller_interface::CallbackReturn::ERROR;
   }
 
-  received_velocity_msg_ptr_.set(std::make_shared<Twist>());
+  received_velocity_msg_ptr_.set(std::make_shared<TwistStamped>());
   return controller_interface::CallbackReturn::SUCCESS;
 }
 
@@ -493,7 +494,7 @@ bool DiffDriveController::reset()
   odometry_.resetOdometry();
 
   // release the old queue
-  std::queue<Twist> empty;
+  std::queue<TwistStamped> empty;
   std::swap(previous_commands_, empty);
 
   registered_left_wheel_handles_.clear();