robotics/object_tf_client.py
2020-02-10 20:48:50 +00:00

28 lines
810 B
Python

#!/usr/bin/env python
import rospy
import tf
import time
from geometry_msgs.msg import (PoseStamped, Pose, Point, Quaternion)
def tf_lookup(object_name):
do_try = True
listener = tf.TransformListener()
while not rospy.is_shutdown() and do_try:
try:
(trans,rot) = listener.lookupTransform('c1', 'base', rospy.Time(0))
do_try = False
except (tf.LookupException, tf.ConnectivityException, tf.ExtrapolationException):
print('Failed to get frame data, retrying...')
time.sleep(0.1)
continue
target_pose = Pose()
target_pose.position.x = trans[0]
target_pose.position.y = trans[1]
target_pose.position.z = trans[2]
target_pose.orientation.x = rot[0]
target_pose.orientation.y = rot[1]
target_pose.orientation.z = rot[2]
target_pose.orientation.w = rot[3]
return target_pose