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tf2_geometry_msgs.py
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tf2_geometry_msgs.py
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# Copyright (c) 2008, Willow Garage, Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * 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.
# * Neither the name of the Willow Garage, Inc. nor the names of its
# 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
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# author: Wim Meeussen
import roslib; roslib.load_manifest('tf2_geometry_msgs')
from geometry_msgs.msg import PoseStamped, Vector3Stamped, PointStamped
import PyKDL
import rospy
import tf2_ros
def to_msg_msg(msg):
return msg
tf2_ros.ConvertRegistration().add_to_msg(Vector3Stamped, to_msg_msg)
tf2_ros.ConvertRegistration().add_to_msg(PoseStamped, to_msg_msg)
tf2_ros.ConvertRegistration().add_to_msg(PointStamped, to_msg_msg)
def from_msg_msg(msg):
return msg
tf2_ros.ConvertRegistration().add_from_msg(Vector3Stamped, from_msg_msg)
tf2_ros.ConvertRegistration().add_from_msg(PoseStamped, from_msg_msg)
tf2_ros.ConvertRegistration().add_from_msg(PointStamped, from_msg_msg)
def transform_to_kdl(t):
return PyKDL.Frame(PyKDL.Rotation.Quaternion(t.transform.rotation.x, t.transform.rotation.y,
t.transform.rotation.z, t.transform.rotation.w),
PyKDL.Vector(t.transform.translation.x,
t.transform.translation.y,
t.transform.translation.z))
# PointStamped
def do_transform_point(point, transform):
p = transform_to_kdl(transform) * PyKDL.Vector(point.point.x, point.point.y, point.point.z)
res = PointStamped()
res.point.x = p[0]
res.point.y = p[1]
res.point.z = p[2]
res.header = transform.header
return res
tf2_ros.TransformRegistration().add(PointStamped, do_transform_point)
# Vector3Stamped
def do_transform_vector3(vector3, transform):
p = transform_to_kdl(transform) * PyKDL.Vector(vector3.vector.x, vector3.vector.y, vector3.vector.z)
res = Vector3Stamped()
res.vector.x = p[0]
res.vector.y = p[1]
res.vector.z = p[2]
res.header = transform.header
return res
tf2_ros.TransformRegistration().add(Vector3Stamped, do_transform_vector3)
# PoseStamped
def do_transform_pose(pose, transform):
f = transform_to_kdl(transform) * PyKDL.Frame(PyKDL.Rotation.Quaternion(pose.pose.orientation.x, pose.pose.orientation.y,
pose.pose.orientation.z, pose.pose.orientation.w),
PyKDL.Vector(pose.pose.position.x, pose.pose.position.y, pose.pose.position.z))
res = PoseStamped()
res.pose.position.x = f.p[0]
res.pose.position.y = f.p[1]
res.pose.position.z = f.p[2]
(res.pose.orientation.x, res.pose.orientation.y, res.pose.orientation.z, res.pose.orientation.w) = f.M.GetQuaternion()
res.header = transform.header
return res
tf2_ros.TransformRegistration().add(PoseStamped, do_transform_pose)