Ejemplo n.º 1
0
def main():

	json_data = []
	with open('Map2.json', 'r') as f: 
		json_data = json.load(f) 
		reset_point_ = json_data.get('reset_point')
		landing_point_ = json_data.get('landing_point')

	reset_point = reset_point_.values()
	landing_point = landing_point_.values()

	start_time  = time.time()
	start_node = node_rrt.Node_rrt(current_coords=(reset_point[0], reset_point[1]), parent_coords=None, distance=0)
	goal_node = node_rrt.Node_rrt(current_coords=(landing_point[0],landing_point[1] ), parent_coords=None, distance=0)

	fig, ax = plt.subplots()
	ax.set_xlim(-15000, 15000)
	ax.set_ylim(-15000, 15000)
	fig.gca().set_aspect('equal', adjustable='box')
	utils.plotPoint(start_node.getXYCoords(), ax, radius=0.06, color='cyan') 	# start
	utils.plotPoint(goal_node.getXYCoords(), ax, radius=0.06, color='magenta') 	# end

	obs.generateMap(ax)

	plt.ion()
	rrt_path, _, itr = rrtPlannedPath(start_node, goal_node, STEP_SIZE, plotter=ax, write=False)
	if rrt_path is not None:
		utils.plotPath(rrt_path, plotter=ax)

	finish_time = time.time()
	result = finish_time - start_time
	print("Program time: " + str(result) + " seconds.")

	plt.ioff()

	path_co = np.array(utils.convertNodeList2CoordList(rrt_path))

	rrt_prune_smooth_path_coords=path_pruning.prunedPath(path=path_co, radius=DRONE_RADIUS, clearance=(DRONE_RADIUS/2))
	rrt_prune_smooth_path_coords= np.array(rrt_prune_smooth_path_coords[::-1])
	plt.plot(rrt_prune_smooth_path_coords[:,0],rrt_prune_smooth_path_coords[:,1],'cyan')

	plt.show()

	rrt_path_coords = utils.convertNodeList2CoordList(node_list=rrt_path)
	with open('/home/valeriia/UAV_Swarm_gazebo/catkin_ws/src/coverage_planner/scripts/path_rrt_land_test.txt', 'w') as fp:
		fp.write('\n'.join('%s %s' % x for x in rrt_path_coords))
	
	with open('/home/valeriia/UAV_Swarm_gazebo/catkin_ws/src/coverage_planner/scripts/path_rrt_land_test_smooth.txt', 'w') as fp:
		fp.write('\n'.join('%s %s' % x for x in list(map(tuple, rrt_prune_smooth_path_coords))))
Ejemplo n.º 2
0
def main():
	start_time  = time.time()
	start_node = node_rrt.Node_rrt(current_coords=(-5001.787385427393, 9526.705177228898), parent_coords=None, distance=0)
	goal_node = node_rrt.Node_rrt(current_coords=(-2833, 4969), parent_coords=None, distance=0)

	fig, ax = plt.subplots()
	ax.set_xlim(-6000, -1000)
	ax.set_ylim(4000, 10000)
	fig.gca().set_aspect('equal', adjustable='box')
	utils.plotPoint(start_node.getXYCoords(), ax, radius=0.06, color='cyan') 	# start
	utils.plotPoint(goal_node.getXYCoords(), ax, radius=0.06, color='magenta') 	# end

	obs.generateMap(ax)

	plt.ion()
	rrt_path, _, itr = rrtPlannedPath(start_node, goal_node, STEP_SIZE, plotter=ax, write=False)
	if rrt_path is not None:
		utils.plotPath(rrt_path, plotter=ax)

	finish_time = time.time()
	result = finish_time - start_time
	print("Program time: " + str(result) + " seconds.")

	plt.ioff()
	plt.show()

	rrt_path_coords = utils.convertNodeList2CoordList(node_list=rrt_path)
	with open('/home/valeriia/UAV_Swarm_gazebo/catkin_ws/src/coverage_planner/scripts/path_rrt_start_test.txt', 'w') as fp:
		fp.write('\n'.join('%s %s' % x for x in rrt_path_coords))
Ejemplo n.º 3
0
def main():
    json_data = []
    with open('Map2.json', 'r') as f:
        json_data = json.load(f)
        start_point = json_data.get('start_point')
        print(start_point.values())

    # find nearest point
    uav_location = start_point.values()
    with open(
            "/home/valeriia/UAV_Swarm_gazebo/catkin_ws/src/coverage_planner/scripts/path_cpp.txt",
            "r") as ins:
        path_cpp = []
        for line in ins:
            path_cpp.append([float(line) for line in line.split()
                             ])  # here send a list path_cpp
    samples = np.array(path_cpp)
    samples.sort(kind='quicksort')
    tree = KDTree(samples)
    uav_location_ = np.array([uav_location])  #here pud a goal pos after rrt
    closest_dist, closest_id = tree.query(
        uav_location_, k=1)  # closest point with respect to the uav location
    point_of_entery = samples[closest_id]
    new_path_cpp = path_cpp[int(closest_id):]
    new_path_cpp.extend(path_cpp[:int(closest_id)])
    del path_cpp[0:int(closest_id)]
    path_cpp_of_tuples = [tuple(l) for l in path_cpp]
    print(point_of_entery)
    #print(int(closest_id))
    with open(
            '/home/valeriia/UAV_Swarm_gazebo/catkin_ws/src/coverage_planner/scripts/path_cpp_.txt',
            'w') as fp:
        fp.write('\n'.join('%s %s' % x for x in path_cpp_of_tuples))
    # rrt path planning
    start_time = time.time()
    start_node = node_rrt.Node_rrt(current_coords=(uav_location[0],
                                                   uav_location[1]),
                                   parent_coords=None,
                                   distance=0)
    goal_node = node_rrt.Node_rrt(current_coords=(point_of_entery[0, 0, 0],
                                                  point_of_entery[0, 0, 1]),
                                  parent_coords=None,
                                  distance=0)

    fig, ax = plt.subplots()
    ax.set_xlim(-15000, 15000)
    ax.set_ylim(-15000, 15000)
    fig.gca().set_aspect('equal', adjustable='box')
    utils.plotPoint(start_node.getXYCoords(), ax, radius=0.06,
                    color='cyan')  # start
    utils.plotPoint(goal_node.getXYCoords(), ax, radius=0.06,
                    color='magenta')  # end

    obs.generateMap(ax)

    plt.ion()
    rrt_path, _, itr = rrtPlannedPath(start_node,
                                      goal_node,
                                      STEP_SIZE,
                                      plotter=ax,
                                      write=False)
    if rrt_path is not None:
        utils.plotPath(rrt_path, plotter=ax)

    finish_time = time.time()
    result = finish_time - start_time
    print("Program time: " + str(result) + " seconds.")

    plt.ioff()

    path_co = np.array(utils.convertNodeList2CoordList(rrt_path))

    rrt_prune_smooth_path_coords = path_pruning.prunedPath(
        path=path_co, radius=DRONE_RADIUS, clearance=(DRONE_RADIUS / 2))
    rrt_prune_smooth_path_coords = np.array(rrt_prune_smooth_path_coords[::-1])

    plt.plot(rrt_prune_smooth_path_coords[:, 0],
             rrt_prune_smooth_path_coords[:, 1], 'cyan')
    plt.show()

    rrt_path_coords = utils.convertNodeList2CoordList(node_list=rrt_path)
    #print(rrt_path_coords)
    with open(
            '/home/valeriia/UAV_Swarm_gazebo/catkin_ws/src/coverage_planner/scripts/path_rrt_start_test.txt',
            'w') as fp:
        fp.write('\n'.join('%s %s' % x for x in rrt_path_coords))

    with open(
            '/home/valeriia/UAV_Swarm_gazebo/catkin_ws/src/coverage_planner/scripts/path_rrt_start_test_smooth.txt',
            'w') as fp:
        fp.write('\n'.join(
            '%s %s' % x
            for x in list(map(tuple, rrt_prune_smooth_path_coords))))
Ejemplo n.º 4
0
def main():
    start_node = node.Node(current_coords=(-4, -4),
                           parent_coords=None,
                           distance=0)
    goal_node = node.Node(current_coords=(4, 4),
                          parent_coords=None,
                          distance=0)

    start1 = start_node.getXYCoords()
    quat = [0, 0, 0, 1]
    state_msg = ModelState()
    state_msg.model_name = 'iris'
    state_msg.pose.position.x = start1[0]
    state_msg.pose.position.y = start1[1]
    state_msg.pose.position.z = 0
    state_msg.pose.orientation.x = quat[0]
    state_msg.pose.orientation.y = quat[1]
    state_msg.pose.orientation.z = quat[2]
    state_msg.pose.orientation.w = quat[3]

    set_state = rospy.ServiceProxy('/gazebo/set_model_state', SetModelState)
    resp = set_state(state_msg)

    fig, ax = plt.subplots()
    ax.set_xlim(-6, 6)
    ax.set_ylim(-6, 6)
    fig.gca().set_aspect('equal', adjustable='box')
    utils.plotPoint(start_node.getXYCoords(), ax, radius=0.06,
                    color='cyan')  # start
    utils.plotPoint(goal_node.getXYCoords(), ax, radius=0.06,
                    color='magenta')  # end

    obs.generateMap(ax)

    plt.ion()

    rrt_path, _, itr = rrtPlannedPath(start_node,
                                      goal_node,
                                      robot_radius=DRONE_RADIUS,
                                      plotter=None,
                                      write=False)
    itr = 0
    # plt.savefig(('./frames/%04d.png' % (itr))); itr += 1
    # print(rrt_path)
    if rrt_path is not None:
        itr = utils.plotPath(rrt_path, plotter=ax, itr=itr, path_color='black')
        itr += 1
    # plt.ioff()
    # plt.show()

    # Pruning
    path_co = np.array(utils.convertNodeList2CoordList(rrt_path))

    print(path_co.shape)
    rrt_prune_smooth_path_coords = path_pruning.prunedPath(
        path=path_co, radius=DRONE_RADIUS, clearance=(DRONE_RADIUS / 2))
    rrt_prune_smooth_path_coords = np.array(rrt_prune_smooth_path_coords[::-1])
    # plt.plot(path_co[:,0],path_co[:,1],'green')
    # plt.plot(rrt_prune_smooth_path_coords[:,0],rrt_prune_smooth_path_coords[:,1],'cyan')
    # if path_co is not None:
    # 	utils.plotPath(path_co, plotter=ax, itr=itr, path_color='black')
    if rrt_prune_smooth_path_coords is not None:
        itr = utils.plotPath(rrt_prune_smooth_path_coords,
                             plotter=ax,
                             itr=itr,
                             path_color='cyan')
        itr += 1

    plt.ioff()
Ejemplo n.º 5
0
def main():

    json_data = []
    with open('Map2.json', 'r') as f:
        json_data = json.load(f)
        start_point_ = json_data.get('start_point')
        #centroid_ = json_data.get('centroid')
    '''json_data_2 = []
	with open('Scenario2.json', 'r') as d: 
		json_data_2 = json.load(d) 
		target_point = json_data_2.get('centroid')'''

    x = [
        -957.3915945077315, -910.8959478922188, -948.4347058273852,
        -875.1556231221184, -845.2041011163965, -858.6145041380078,
        -919.3042095946148, -942.3035844964907, -933.9325257679448,
        -889.955683006905
    ]
    y = [
        -855.0138749238104, -895.5183857586235, -921.3926183544099,
        -947.264425364323, -858.3795844987035, -861.4421726837754,
        -895.0775583777577, -844.3298955513164, -922.8892891705036,
        -887.7070486117154
    ]
    centroid = [sum(x) / len(x), sum(y) / len(y)]
    print(centroid)
    start_point = start_point_.values()
    #target_point = centroid_.values()
    print(type(start_point))
    print(centroid)
    start_time = time.time()
    start_node = node_rrt.Node_rrt(current_coords=(start_point[0],
                                                   start_point[1]),
                                   parent_coords=None,
                                   distance=0)
    goal_node = node_rrt.Node_rrt(current_coords=(centroid[0], centroid[1]),
                                  parent_coords=None,
                                  distance=0)

    fig, ax = plt.subplots()
    ax.set_xlim(-15000, 15000)
    ax.set_ylim(-15000, 15000)
    fig.gca().set_aspect('equal', adjustable='box')
    utils.plotPoint(start_node.getXYCoords(), ax, radius=0.06,
                    color='cyan')  # start
    utils.plotPoint(goal_node.getXYCoords(), ax, radius=0.06,
                    color='magenta')  # end

    obs.generateMap(ax)

    plt.ion()
    rrt_path, _, itr = rrtPlannedPath(start_node,
                                      goal_node,
                                      STEP_SIZE,
                                      plotter=ax,
                                      write=False)
    if rrt_path is not None:
        utils.plotPath(rrt_path, plotter=ax)

    finish_time = time.time()
    result = finish_time - start_time
    print("Program time: " + str(result) + " seconds.")

    plt.ioff()

    path_co = np.array(utils.convertNodeList2CoordList(rrt_path))

    rrt_prune_smooth_path_coords = path_pruning.prunedPath(
        path=path_co, radius=DRONE_RADIUS, clearance=(DRONE_RADIUS / 2))
    rrt_prune_smooth_path_coords = np.array(rrt_prune_smooth_path_coords[::-1])
    plt.plot(rrt_prune_smooth_path_coords[:, 0],
             rrt_prune_smooth_path_coords[:, 1], 'cyan')

    plt.show()

    rrt_path_coords = utils.convertNodeList2CoordList(node_list=rrt_path)
    with open(
            '/home/valeriia/UAV_Swarm_gazebo/catkin_ws/src/coverage_planner/scripts/path_rrt_test_scenario2.txt',
            'w') as fp:
        fp.write('\n'.join('%s %s' % x for x in rrt_path_coords))

    with open(
            '/home/valeriia/UAV_Swarm_gazebo/catkin_ws/src/coverage_planner/scripts/path_rrt_test__scenario2_smooth.txt',
            'w') as dp:
        dp.write('\n'.join(
            '%s %s' % x
            for x in list(map(tuple, rrt_prune_smooth_path_coords))))
Ejemplo n.º 6
0
def main():
    json_data = []
    if os.path.exists('Map2.json'):
        with open('Map2.json', 'r') as f:
            json_data = json.load(f)
            reset_point = json_data.get('reset_point')
        drop_location = reset_point.values()
    else:
        print('####!!!!There is no file with mission!!!!####')

    json_data_2 = []
    x_arr = []
    y_arr = []

    if os.path.exists('Targets.json'):
        with open('Targets.json', 'r') as d:
            json_data_2 = json.load(d)
            target_point_arr = json_data_2.get('points')
        for i in range(len(target_point_arr)):
            target_point_arr_ = target_point_arr[i]
            x = target_point_arr_[0]
            y = target_point_arr_[1]
            x_arr.append(x)
            y_arr.append(y)
        centroid = [sum(x_arr) / len(x_arr), sum(y_arr) / len(y_arr)]
    else:
        print('####!!!!There is no file with targets!!!!####')
    start_time = time.time()
    start_node = node_rrt.Node_rrt(current_coords=(centroid[0], centroid[1]),
                                   parent_coords=None,
                                   distance=0)
    goal_node = node_rrt.Node_rrt(current_coords=(drop_location[0],
                                                  drop_location[1]),
                                  parent_coords=None,
                                  distance=0)

    fig, ax = plt.subplots()
    ax.set_xlim(-15000, 15000)
    ax.set_ylim(-15000, 15000)
    fig.gca().set_aspect('equal', adjustable='box')
    utils.plotPoint(start_node.getXYCoords(), ax, radius=0.06,
                    color='cyan')  # start
    utils.plotPoint(goal_node.getXYCoords(), ax, radius=0.06,
                    color='magenta')  # end

    obs.generateMap(ax)

    plt.ion()
    # Set plotter=None here to disable animation
    rrt_path, _, itr = rrtPlannedPath(start_node,
                                      goal_node,
                                      STEP_SIZE,
                                      plotter=ax,
                                      write=False)
    if rrt_path is not None:
        utils.plotPath(rrt_path, plotter=ax)

    finish_time = time.time()
    result = finish_time - start_time
    print("Program time: " + str(result) + " seconds.")

    plt.ioff()

    path_co = np.array(utils.convertNodeList2CoordList(rrt_path))

    rrt_prune_smooth_path_coords = path_pruning.prunedPath(
        path=path_co, radius=DRONE_RADIUS, clearance=(DRONE_RADIUS))
    rrt_prune_smooth_path_coords = np.array(rrt_prune_smooth_path_coords[::-1])
    plt.plot(rrt_prune_smooth_path_coords[:, 0],
             rrt_prune_smooth_path_coords[:, 1], 'cyan')

    plt.show()

    rrt_path_coords = utils.convertNodeList2CoordList(node_list=rrt_path)
    with open(
            '/home/valeriia/UAV_Swarm_gazebo/catkin_ws/src/px4_controller/rrt_pruning_smoothing/Code/path_rrt_reset_test_scenario2.txt',
            'w') as fp:
        fp.write('\n'.join('%s %s' % x for x in rrt_path_coords))

    with open(
            '/home/valeriia/UAV_Swarm_gazebo/catkin_ws/src/px4_controller/rrt_pruning_smoothing/Code/path_rrt_reset_test_smooth_scenario2.txt',
            'w') as fp:
        fp.write('\n'.join(
            '%s %s' % x
            for x in list(map(tuple, rrt_prune_smooth_path_coords))))
Ejemplo n.º 7
0
def main():

    prm.main()
    """	rospy.loginfo("This start x pose: %s", start_pose_x)
		rospy.loginfo("This start y pose: %s", start_pose_y)
		rospy.loginfo("This goal x pose: %s", goal_pose_x)
		rospy.loginfo("This goal y pose: %s", goal_pose_y)"""
    #possition_listener()
    if (prm.start_pose_x == None) or (prm.start_pose_y == None):
        rospy.loginfo("Problem with start coordinates!")
        rospy.loginfo("Start x: '%s'" + " and " + "y: '%s' coordinates: ",
                      str(prm.start_pose_x), str(prm.start_pose_y))
        sys.exit(0)
    elif (prm.goal_pose_x == None) or (prm.goal_pose_y == None):
        rospy.loginfo("Problem with goal coordinates!")
        rospy.loginfo("Goal x: '%s'" + " and " + "y: '%s' coordinates: ",
                      str(prm.goal_pose_x), str(prm.goal_pose_y))
        sys.exit(0)

    start_node = node_rrt.Node_rrt(current_coords=(prm.start_pose_x,
                                                   prm.start_pose_y),
                                   parent_coords=None,
                                   distance=0)
    goal_node = node_rrt.Node_rrt(current_coords=(prm.goal_pose_x,
                                                  prm.goal_pose_y),
                                  parent_coords=None,
                                  distance=0)

    start1 = start_node.getXYCoords()
    quat = [0, 0, 0, 1]
    state_msg = ModelState()
    state_msg.model_name = 'iris'
    state_msg.pose.position.x = start1[0]
    state_msg.pose.position.y = start1[1]
    state_msg.pose.position.z = 0
    state_msg.pose.orientation.x = quat[0]
    state_msg.pose.orientation.y = quat[1]
    state_msg.pose.orientation.z = quat[2]
    state_msg.pose.orientation.w = quat[3]

    set_state = rospy.ServiceProxy('/gazebo/set_model_state', SetModelState)
    resp = set_state(state_msg)

    fig, ax = plt.subplots()
    ax.set_xlim(prm._lim_x, prm.lim_x)
    ax.set_ylim(prm._lim_y, prm.lim_y)
    fig.gca().set_aspect('equal', adjustable='box')
    utils.plotPoint(start_node.getXYCoords(), ax, radius=0.06,
                    color='cyan')  # start
    utils.plotPoint(goal_node.getXYCoords(), ax, radius=0.06,
                    color='magenta')  # end

    obs.generateMap(ax)

    plt.ion()

    rrt_path, _, itr = rrtPlannedPath(start_node,
                                      goal_node,
                                      robot_radius=DRONE_RADIUS,
                                      plotter=None,
                                      write=False)
    itr = 0
    # plt.savefig(('./frames/%04d.png' % (itr))); itr += 1
    # print(rrt_path)
    if rrt_path is not None:
        itr = utils.plotPath(rrt_path, plotter=ax, itr=itr, path_color='black')
        itr += 1
    # plt.ioff()
    # plt.show()

    # Pruning
    path_co = np.array(utils.convertNodeList2CoordList(rrt_path))

    print(path_co.shape)
    rrt_prune_smooth_path_coords = path_pruning.prunedPath(
        path=path_co, radius=DRONE_RADIUS, clearance=(DRONE_RADIUS / 2))
    rrt_prune_smooth_path_coords = np.array(rrt_prune_smooth_path_coords[::-1])
    # plt.plot(path_co[:,0],path_co[:,1],'green')
    # plt.plot(rrt_prune_smooth_path_coords[:,0],rrt_prune_smooth_path_coords[:,1],'cyan')
    # if path_co is not None:
    # 	utils.plotPath(path_co, plotter=ax, itr=itr, path_color='black')
    if rrt_prune_smooth_path_coords is not None:
        itr = utils.plotPath(rrt_prune_smooth_path_coords,
                             plotter=ax,
                             itr=itr,
                             path_color='cyan')
        itr += 1

    #rrt_smoothed_path_coors = utils.convertNodeList2CoordList(node_list=rrt_prune_smooth_path_coords)
    #smoothed_path_length = utils.path_length_meters(rrt_smoothed_path_length)
    smoothed_path_pength = utils.path_length_meters(
        rrt_prune_smooth_path_coords)
    try:
        capacity = float(str(prm.capacity)[5:])
        max_length = float(str(prm.max_length)[5:])
        max_uav_path = capacity * max_length
        if max_uav_path < path_length:
            print("\nWarning!")
            print("Path cannot be overcomed!")
        else:
            print("Path can be overcomed!")
    except:
        print("Capacity and maximum path lenght was not entered!")

    with open('path.txt', 'w') as f:
        f.write(json.dumps(rrt_path_coords))
    plt.ioff()
    plt.show()

    #plt.savefig(('./frames/%04d.png' % (itr))); itr += 1

    rrt_path_coords = utils.convertNodeList2CoordList(node_list=rrt_path)
Ejemplo n.º 8
0
def main():
    start_time = time.time()

    prm.main()

    print(X_LIM)
    #possition_listener()
    if (prm.start_pose_x == None) or (prm.start_pose_y == None):
        rospy.loginfo("Problem with start coordinates!")
        rospy.loginfo("Start x: '%s' and y: '%s' coordinates",
                      str(prm.start_pose_x), str(prm.start_pose_y))
        sys.exit(0)
    elif (prm.goal_pose_x == None) or (prm.goal_pose_y == None):
        rospy.loginfo("Problem with goal coordinates!")
        rospy.loginfo("Goal x: '%s' and y: '%s' coordinates",
                      str(prm.goal_pose_x), str(prm.goal_pose_y))
        sys.exit(0)
    start_node = node_rrt.Node_rrt(current_coords=(prm.start_pose_x,
                                                   prm.start_pose_y),
                                   parent_coords=None,
                                   distance=0)
    goal_node = node_rrt.Node_rrt(current_coords=(prm.goal_pose_x,
                                                  prm.goal_pose_y),
                                  parent_coords=None,
                                  distance=0)
    #start_node = node_rrt.Node_rrt(current_coords=(0, 0), parent_coords=None, distance=0)
    #goal_node = node_rrt.Node_rrt(current_coords=(5, 5), parent_coords=None, distance=0)

    fig, ax = plt.subplots()
    ax.set_xlim(prm._lim_x, prm.lim_x)
    ax.set_ylim(prm._lim_y, prm.lim_y)
    fig.gca().set_aspect('equal', adjustable='box')
    utils.plotPoint(start_node.getXYCoords(), ax, radius=0.06,
                    color='cyan')  # start
    utils.plotPoint(goal_node.getXYCoords(), ax, radius=0.06,
                    color='magenta')  # end

    #obs.testMain()
    obs.generateMap(ax)

    plt.ion()
    rrt_path, _, itr = rrtPlannedPath(start_node,
                                      goal_node,
                                      robot_radius=prm.c_drone_radius,
                                      plotter=ax,
                                      write=False)
    if rrt_path is not None:
        utils.plotPath(rrt_path, plotter=ax)

    rrt_path_coords = utils.convertNodeList2CoordList(node_list=rrt_path)
    path_length = utils.path_length_meters(rrt_path_coords)
    try:
        capacity = float(str(prm.capacity)[5:])
        max_length = float(str(prm.max_length)[5:])
        max_uav_path = capacity * max_length
        if max_uav_path < path_length:
            print("\nWarning!")
            print("Path cannot be overcomed!")
        else:
            print("Path can be overcomed!")
    except:
        print("Capacity and maximum path lenght was not entered!")

    finish_time = time.time()
    result = finish_time - start_time
    print("Program time: " + str(result) + " seconds.")

    #global rrt_path_coords_c
    #rrt_path_coords_c = []
    #rrt_path_coords_c = utils.convertNodeList2CoordList(node_list=rrt_path)
    rrt_path_coords = utils.convertNodeList2CoordList(node_list=rrt_path)

    with open(
            '/home/valeriia/UAV_Swarm_gazebo/catkin_ws/src/coverage_planner/scripts/path_rrt_.txt',
            'w') as fp:
        fp.write('\n'.join('%s %s' % x for x in rrt_path_coords))

    #f = open('path.txt', 'w')
    #for element in rrt_path_coords:
    #line = ' '.join(str(x) for x in element)
    #f.write(line + '\n')
    #f.close()

    #with open('path.txt', 'w') as f:
    #	for item in rrt_path_coords:
    #		f.write(json.dumps(rrt_path_coords))
    plt.ioff()
    plt.show()
    sys.exit