本文整理汇总了Python中car.Car.rear_position方法的典型用法代码示例。如果您正苦于以下问题：Python Car.rear_position方法的具体用法？Python Car.rear_position怎么用？Python Car.rear_position使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类car.Car的用法示例。
在下文中一共展示了Car.rear_position方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: play_route
# 需要导入模块: from car import Car [as 别名]
# 或者: from car.Car import rear_position [as 别名]
def play_route(route, car = None, print_progress = False, k_smooth = 0.4, d_ahead = 0.05, t_ahead = 0.2):
last_ms = None
#print route
if car is None:
car = Car()
queue = Queue.Queue()
try:
car.set_rc_mode()
car.add_listener(queue)
message = queue.get(block=True, timeout = 0.5)
#print repr(message)
last_ms = message.ms
start_time = time.time()
# keep going until we run out of track
car.lcd.display_text('press any key\nto abort')
while car.lcd.getch() is None:
try:
message = queue.get(block=True, timeout = 0.5)
except:
print 'message timed out at: '+datetime.datetime.now().strftime("%H:%M:%S.%f")
print 'last message received:' + repr(message)
print
raise
(x,y) = car.front_position()
(rear_x,rear_y) = car.rear_position()
car_velocity = car.get_velocity_meters_per_second()
route.set_position(x,y,rear_x,rear_y,car_velocity)
steering_angle = steering_angle_by_look_ahead_curve(car,route,d_ahead,t_ahead)
#steering_angle = steering_angle_by_look_ahead(car,route,d_ahead,t_ahead)
str_ms = car.steering_for_angle(steering_angle)
esc_ms = esc_for_velocity(route.velocity(), car, route.is_reverse())
if print_progress:
print("t: {:.1f} i: {} xg: {:.2f} gy:{:.2f} gv: {:.2f} v:{:.2f} x: {:.2f} y:{:.2f} reverse: {} cte:{:.2f} heading:{:.2f} segment_heading: {:.2f} steering_degrees: {:.2f} esc:{}".format(
time.time() - start_time,
route.index,
route.nodes[route.index+1].x,
route.nodes[route.index+1].y,
route.velocity(),
car_velocity,
x,
y,
route.is_reverse(),
cte,
car_heading,
segment_heading,
steering_angle,
esc_ms))
# send to car
car.set_esc_and_str(esc_ms, str_ms)
if route.done() and car_velocity == 0:
break;
finally:
car.set_esc_and_str(1500,1500)
car.set_manual_mode()
car.remove_listener(queue)