def odom_cb(self, msg):
'''HACK: Intermediate hack until we have tf set up'''
pose, twist, _, _ = mil_ros_tools.odometry_to_numpy(msg)
position, orientation = pose
self.world_to_body = self.transformer.fromTranslationRotation(position, orientation)[:3, :3]
self.cur_position = position
cur_orientation = tf.transformations.quaternion_matrix(orientation)
self.cur_orientation = cur_orientation[:3, :3]
def odom_cb(self, msg):
'''HACK: Intermediate hack until we have tf set up'''
pose, twist, _, _ = mil_ros_tools.odometry_to_numpy(msg)
position, orientation = pose
self.world_to_body = self.transformer.fromTranslationRotation(position, orientation)[:3, :3]
self.cur_position = position
cur_orientation = tf.transformations.quaternion_matrix(orientation)
self.cur_orientation = cur_orientation[:3, :3]
def odom_cb(self, msg):
time_of = rospy.Time.now()
if (time_of - self.last_sample) < self._sampling_period:
return
else:
self.last_sample = time_of
pose, twist, _, _ = mil_ros_tools.odometry_to_numpy(msg)
position, orientation = pose
linear, angular = twist
self.cur_state_history.append(np.hstack((position, linear)))
def odom_cb(self, msg):
time_of = rospy.Time.now()
if (time_of - self.last_sample) < self._sampling_period:
return
else:
self.last_sample = time_of
pose, twist, _, _ = mil_ros_tools.odometry_to_numpy(msg)
position, orientation = pose
linear, angular = twist
self.cur_state_history.append(np.hstack((position, linear)))
def init_(self, cam):
image_sub = "/stereo/right/image_rect_color"
cam_info = "/stereo/right/camera_info"
yield self.nh.subscribe(image_sub, Image, self._img_cb)
self._database = yield self.nh.get_service_client('/database/requests', ObjectDBQuery)
self._odom_sub = yield self.nh.subscribe('/odom', Odometry,
lambda odom: setattr(self, 'pose', odometry_to_numpy(odom)[0]))
self.cam_info_sub = yield self.nh.subscribe(cam_info, CameraInfo, self._info_cb)
self.tf_listener = tf.TransformListener(self.nh)
defer.returnValue(self)
def odom_cb(self, msg):
'''
Message structure defined in ROS specification
[1] http://docs.ros.org/jade/api/nav_msgs/html/msg/Odometry.html
'''
# Using ropsy.Time.now() so we can use simulated accelerated time (not CPU time)
pose, twist, pose_cov, twist_cov = mil_ros_tools.odometry_to_numpy(msg)
(position, orientation_q), (linear_vel, angular_vel) = pose, twist
self.current_state = {
'position': position,
'linear_vel': linear_vel,
'orientation_q': orientation_q,
'angular_vel': angular_vel,
}
time_of = rospy.Time.now()
if (time_of - self.last_sample) < self.sampling_period:
return
else:
self.last_sample = time_of
# For now, we'll ignore pose and twist covariance (Implementing for controls final project)
# Don't include states that are "too old"
for state_variable in self.state_variables:
if len(self.state_history[state_variable]) > self.history_length:
self.state_history[state_variable].popleft()
self.state_history['position'].append(position)
self.state_history['linear_vel'].append(linear_vel)
self.state_history['orientation_q'].append(orientation_q)
self.state_history['angular_vel'].append(angular_vel)
# Hold at last target state
if self.target_trajectory is None:
return
if len(self.target_trajectory['position']) > 1:
p_error = np.linalg.norm(position -
self.target_trajectory['position'][0])
v_error = np.linalg.norm(linear_vel -
self.target_trajectory['linear_vel'][0])
if p_error + v_error < self.waypoint_epsilon:
rospy.logwarn("Waypoint achieved!")
for state in self.state_variables:
self.target_trajectory[state].popleft(
) # Remove a target state!
def init_(self, cam):
image_sub = "/stereo/right/image_rect_color"
cam_info = "/stereo/right/camera_info"
yield self.nh.subscribe(image_sub, Image, self._img_cb)
self._database = yield self.nh.get_service_client(
'/database/requests', ObjectDBQuery)
self._odom_sub = yield self.nh.subscribe(
'/odom', Odometry,
lambda odom: setattr(self, 'pose',
odometry_to_numpy(odom)[0]))
self.cam_info_sub = yield self.nh.subscribe(cam_info, CameraInfo,
self._info_cb)
self.tf_listener = tf.TransformListener(self.nh)
defer.returnValue(self)
