def __init__(self, osg_file):
# the proxy instance allows us to talk to the display server
self.ds_proxy = JSONStimulusOSGController()
# create the observer
self.observer = CarModelSocketObserver(self._observer_callback)
# load the provided OSG file
self.ds_proxy.set_stimulus_plugin('StimulusOSG')
self.ds_proxy.load_osg(osg_file)
self.expTrial = -1
self.replicate = -1
self.tSwitch = 0
self.tExp = 0
self.dateStart = ''
# set starting position for stimuli
self.rootPosition = np.zeros((1, 2))
self.postPosition = np.zeros((numberPost, 2))
self.postDistance = 5.0
# set starting position of fly
self.start_position = {'x': 0.0, 'y': 0.0, 'z': -0.07}
self.ds_proxy.set_position(**self.start_position)
# assign experiment a unique id
self.expId = uuid.uuid4()
# get experiment conditions from database
self.getExperiment()
# start every experiment with a no post condition
self.updateStimuli(0)
emailer.twitStatus(self.expId, status=0, t=self.tExp)
self.running = True
# event counter (number of times fly position is reset)
self.cntr = 0
def loop(self):
nStimuli = 0
t0 = time.time()
sl_t0 = time.time()
lastMessage = True
# write output file in specified directory
path = pathDefine(pathData, self.expId)
with open(path + '/results.csv', 'w') as output:
while self.running:
pos = self.observer.position
direc = self.observer.azimuth
t = time.time() - t0
sl_t = time.time() - sl_t0
if sl_t < 3:
self.observer.velocity = 0.0
else:
self.observer.velocity = 0.20
if t > self.tExp * 60 * .9 and lastMessage:
try:
emailer.twitStatus(self.expId,
status=1,
t=self.tExp * .1)
except:
pass
lastMessage = False
if t > self.tExp * 60:
self.running = False
self.writeInDb()
emailer.twitStatus(self.expId, status=2, t=self.tExp)
elif t > (nStimuli + 1) * self.tSwitch * 60:
nStimuli = nStimuli + 1
self.observer.reset_to(**self.start_position)
self.updateStimuli(nStimuli)
sl_t0 = time.time()
self.cntr = 0
for nPost in range(0, 10):
if distance(pos, self.postPosition[nPost, :], True) < 0.5:
self.observer.reset_to(**self.start_position)
self.cntr += 1
sl_t0 = time.time()
break
if distance(pos, self.start_position,
False) > self.postDistance:
self.observer.reset_to(**self.start_position)
self.cntr += 1
sl_t0 = time.time()
#print "XYZ(%3.2f, %3.2f, %3.2f)" % (pos['x'], pos['y'], pos['z']), self.counter
#print(t)
output.write('%.8f, %.8f, %.8f, %.4f, %d, %.8f, %s\n' %
(pos['x'], pos['y'], pos['z'], direc, self.cntr,
t, str(nStimuli)))
time.sleep(0.005)