Contents
Data Types
These data types are defined in file tf/transform_datatypes.h.
Base data types (Quaternion, Vector, Point, Pose, Transform)
Show EOL distros:
All of these data types are typedefs of a bullet data type, so those are listed for reference.
Type |
tf |
Bullet |
Quaternion |
tf::Quaternion |
btQuaternion |
Vector |
tf::Vector3 |
btVector3 |
Point |
tf::Point |
btVector3 |
Pose |
tf::Pose |
btTransform |
Transform |
tf::Transform |
btTransform |
As of ROS Fuerte, TF has defined its own datatypes. For more information on how to migrate pre-Fuerte code to newer distributions of ROS, see geometry/bullet_migration.
Type |
tf |
Quaternion |
tf::Quaternion |
Vector |
tf::Vector3 |
Point |
tf::Point |
Pose |
tf::Pose |
Transform |
tf::Transform |
tf::Stamped <T>
tf::Stamped<T> is templated on the above datatypes(except tf::Transform) with elements frame_id_ and stamp_
1 template <typename T>
2 class Stamped : public T{
3 public:
4 ros::Time stamp_;
5 std::string frame_id_;
6
7 Stamped() :frame_id_ ("NO_ID_STAMPED_DEFAULT_CONSTRUCTION"){}; //Default constructor used only for preallocation
8
9 Stamped(const T& input, const ros::Time& timestamp, const std::string & frame_id);
10
11 void setData(const T& input);
12 };
tf::StampedTransform
tf::StampedTransform is a special case of tf::Transforms which require both frame_id and stamp as well as child_frame_id.
1 /** \brief The Stamped Transform datatype used by tf */
2 class StampedTransform : public tf::Transform
3 {
4 public:
5 ros::Time stamp_; ///< The timestamp associated with this transform
6 std::string frame_id_; ///< The frame_id of the coordinate frame in which this transform is defined
7 std::string child_frame_id_; ///< The frame_id of the coordinate frame this transform defines
8 StampedTransform(const tf::Transform& input, const ros::Time& timestamp, const std::string & frame_id, const std::string & child_frame_id):
9 tf::Transform (input), stamp_ ( timestamp ), frame_id_ (frame_id), child_frame_id_(child_frame_id){ };
10
11 /** \brief Default constructor only to be used for preallocation */
12 StampedTransform() { };
13
14 /** \brief Set the inherited Traonsform data */
15 void setData(const tf::Transform& input){*static_cast<tf::Transform*>(this) = input;};
16
17 };
Helper Functions
tf::Quaternion createIdentityQuaternion()
- Return an identity quaternion.
tf::Quaternion createQuaternionFromRPY(double roll,double pitch,double yaw)
Return a tf::Quaternion constructed from Fixed-Axis Roll, Pitch and Yaw
geometry_msgs::Quaternion createQuaternionMsgFromRollPitchYaw(double roll,double pitch,double yaw)
Return a geometry_msgs::Quaternion constructed from Fixed-Axis Roll, Pitch and Yaw.
Data type conversions
See the conversions code API.
