def bypass(path_cap, path_frame):
# do not need to get frame by read function.
# Directly use global variables
global path_frame
###### Prepare #########
avoid_client.init(capL_id=2, capR_id=1)
# get direction
direction = avoid_client.getOrient()
first_dir = direction ''' first direction. important variable'''
# 先离开障碍物面前
while direction is not 2:
if first_dir is 3:
# 左转，前进，右转
mo.turn_left(common_config.SLEEP_TIME)
mo.forward(common_config.SLEEP_TIME)
mo.turn_right(common_config.SLEEP_TIME)
elif first_dir is 4:
mo.turn_right(common_config.SLEEP_TIME)
mo.forward(common_config.SLEEP_TIME)
mo.turn_left(common_config.SLEEP_TIME)
direction = avoid_client.getOrient()
# 试探性地前进
flag = False
while(!util.hasRoad(process_img(path_frame))): #在没找到地上的路之前
if first_dir is 3:
mo.turn_right(common_config.SLEEP_TIME) if flag is False
direction = avoid_client.getOrient()
if direction is not 2:
mo.turn_left(common_config.SLEEP_TIME)
mo.forward(common_config.SLEEP_TIME)
flag = False
else:
mo.forward(common_config.SLEEP_TIME)
flag = True
elif first_dir is 4:
mo.turn_left(common_config.SLEEP_TIME) if flag is False
direction = avoid_client.getOrient()
if direction is not 2:
mo.turn_right(common_config.SLEEP_TIME)
mo.forward(common_config.SLEEP_TIME)
flag = False
else:
mo.forward(common_config.SLEEP_TIME)
flag = True
# 找到路之后，往回转一下即可
mo.turn_left(common_config.SLEEP_TIME) if first_dir is 3
mo.turn_right(common_config.SLEEP_TIME) if first_dir is 4
img = imgprocess.imageDW(gray,(common_config.CAP_HEIGHT,common_config.CAP_WIDTH),1)
new_img = np.zeros(img.shape)
for i in range(img.shape[0]):
for j in range(img.shape[1]):
new_img[i][j] = 0 if img[i][j] < THRESHOLD else 255
new_img = new_img.ravel()
new_img = [y/255.0 for y in new_img]
new_img = np.reshape(new_img, (common_config.NETWORK_INPUT_SIZE, 1))
cv2.imshow("frame", img)
# decide direction
direction = np.argmax(net.feedforward(new_img))
# find obstacle
if count % 3 == 0 # every 3 loop get one orient
orient = avoid_client.getOrient()
count += 1
count = count % 3
if orient is not 2:
bypass.bypass()
# Choose direction or quit
input_key = cv2.waitKey(0) & 0xFF
if input_key == ord('q'):
break
if direction == 0:
mo.forward(common_config.SLEEP_TIME)
print "forward"
elif direction == 1:
mo.turn_left(common_config.SLEEP_TIME)
print "turn left"