本文整理匯總了Python中pygaze.screen.Screen.clear方法的典型用法代碼示例。如果您正苦於以下問題：Python Screen.clear方法的具體用法？Python Screen.clear怎麽用？Python Screen.clear使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類pygaze.screen.Screen的用法示例。
在下文中一共展示了Screen.clear方法的9個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Python代碼示例。
示例1: libeyelink
# 需要導入模塊: from pygaze.screen import Screen [as 別名]
# 或者: from pygaze.screen.Screen import clear [as 別名]
#.........這裏部分代碼省略.........
def connected(self):
"""See pygaze._eyetracker.baseeyetracker.BaseEyeTracker"""
return pylink.getEYELINK().isConnected()
def calibrate(self):
"""See pygaze._eyetracker.baseeyetracker.BaseEyeTracker"""
if self.recording:
raise Exception(
"Error in libeyelink.libeyelink.calibrate(): Trying to "
"calibrate after recording has started!")
# # # # #
# EyeLink calibration and validation
# attempt calibrate; confirm abort when esc pressed
while True:
self.eyelink_graphics.esc_pressed = False
pylink.getEYELINK().doTrackerSetup()
if not self.eyelink_graphics.esc_pressed:
break
self.confirm_abort_experiment()
# If we are using the built-in EyeLink event detection, we don't need
# the RMS calibration routine.
if self.eventdetection == 'native':
return
# # # # #
# RMS calibration
# present instructions
self.display.fill() # clear display
self.scr.draw_text(text= \
"Noise calibration: please look at the dot\n\n(press space to start)",
pos=(self.resolution[0]/2, int(self.resolution[1]*0.2)),
center=True, fontsize=self.fontsize)
self.scr.draw_fixation(fixtype='dot')
self.display.fill(self.scr)
self.display.show()
self.scr.clear() # clear screen again
# wait for spacepress
self.kb.get_key(keylist=['space'], timeout=None)
# start recording
self.log("PYGAZE RMS CALIBRATION START")
self.start_recording()
# show fixation
self.display.fill()
self.scr.draw_fixation(fixtype='dot')
self.display.fill(self.scr)
self.display.show()
self.scr.clear()
# wait for a bit, to allow participant to fixate
clock.pause(500)
# get samples
# samplelist, prefilled with 1 sample to prevent sl[-1] from producing
# an error; first sample will be ignored for RMS calculation
sl = [self.sample()]
t0 = clock.get_time() # starting time
while clock.get_time() - t0 < 1000:示例2: Display
# 需要導入模塊: from pygaze.screen import Screen [as 別名]
# 或者: from pygaze.screen.Screen import clear [as 別名]
# # # # #
# SETUP
# visuals
disp = Display()
scr = Screen()
# input
tracker = EyeTracker(disp)
kb = Keyboard(keylist=None, timeout=None)
# calibrate
tracker.calibrate()
# starting screen
scr.clear()
scr.draw_text(text="Press Space to start")
disp.fill(scr)
disp.show()
kb.get_key(keylist=['space'], timeout=None, flush=True)
# # # # #
# VALIDATION
# loop through points
for i in range(len(CALIBPOINTS)):
# get coordinate
x, y = CALIBPOINTS[i]
# draw calibration point
scr.clear()示例3: EyelinkGraphics
# 需要導入模塊: from pygaze.screen import Screen [as 別名]
# 或者: from pygaze.screen.Screen import clear [as 別名]
#.........這裏部分代碼省略.........
def set_tracker(self, tracker):
"""
Connects the tracker to the graphics environment.
Arguments:
tracker -- An tracker object as returned by pylink.EyeLink().
"""
self.tracker = tracker
self.tracker_version = tracker.getTrackerVersion()
if self.tracker_version >= 3:
self.tracker.sendCommand("enable_search_limits=YES")
self.tracker.sendCommand("track_search_limits=YES")
self.tracker.sendCommand("autothreshold_click=YES")
self.tracker.sendCommand("autothreshold_repeat=YES")
self.tracker.sendCommand("enable_camera_position_detect=YES")
def setup_cal_display(self):
"""
Sets up the initial calibration display, which contains a menu with
instructions.
"""
# show instructions
self.display.fill(self.menuscreen)
self.display.show()
def exit_cal_display(self):
"""Exits calibration display."""
self.clear_cal_display()
def record_abort_hide(self):
"""TODO: What does this do?"""
pass
def clear_cal_display(self):
"""Clears the calibration display"""
self.display.fill()
self.display.show()
def erase_cal_target(self):
"""TODO: What does this do?"""
self.clear_cal_display()
def draw_cal_target(self, x, y):
"""
Draws calibration target.
Arguments:
x -- The X coordinate of the target.
y -- The Y coordinate of the target.
"""
self.play_beep(pylink.CAL_TARG_BEEP)
self.screen.clear()示例4: set_vibration
# 需要導入模塊: from pygaze.screen import Screen [as 別名]
# 或者: from pygaze.screen.Screen import clear [as 別名]
# RUN
# run until a minute has passed
t0 = timer.get_time()
t1 = timer.get_time()
text = "Test the joystick!"
while t1 - t0 < 60000:
# get joystick input
event, value, t1 = js.get_joyinput(timeout=10)
# update text
if event != None:
text = text="%s: %s" % (event, value)
if event == 'joyaxismotion' and RUMBLE:
set_vibration(0, max(0, value[2]), max(0, -value[2]))
# display on screen
scr.clear()
scr.draw_text(text="%s\n\n(%.2f)" % (text, float(t1-t0)/1000.0), fontsize=24)
# show text
disp.fill(scr)
disp.show()
# # # # #
# CLOSE
# reset rumble to 0
if RUMBLE:
set_vibration(0, 0, 0)
# close the Display
disp.close()
示例5: SMItracker
# 需要導入模塊: from pygaze.screen import Screen [as 別名]
# 或者: from pygaze.screen.Screen import clear [as 別名]
#.........這裏部分代碼省略.........
raise Exception("Error in libsmi.SMItracker.calibrate: failed to setup calibration; %s" % err)
# calibrate
cres = iViewXAPI.iV_Calibrate()
# validate if calibration returns succes
if cres == 1:
cerr = None
vres = iViewXAPI.iV_Validate()
# handle validation errors
if vres != 1:
verr = errorstring(vres)
else:
verr = None
## # TEST #
## res = iViewXAPI.iV_GetAccuracyImage(byref(imageData))
## self.log("IMAGEBUFFERSTART")
## self.log(imageData.imageBuffer)
## self.log("IMAGEBUFFERSTOP")
## print("Image height: %s, image width: %s, image size: %s" % (imageData.imageHeight,imageData.imageWidth, imageData.imageSize))
## print imageData.imageBuffer
## ########
# handle calibration errors
else:
cerr = errorstring(cres)
# return succes
if cerr == None:
print("libsmi.SMItracker.calibrate: calibration was succesful")
if verr == None:
print("libsmi.SMItracker.calibrate: validation was succesful")
# present instructions
self.disp.fill() # clear display
self.screen.draw_text(text="Noise calibration: please look at the dot\n\n(press space to start)", pos=(self.dispsize[0]/2, int(self.dispsize[1]*0.2)), center=True)
self.screen.draw_fixation(fixtype='dot')
self.disp.fill(self.screen)
self.disp.show()
self.screen.clear() # clear screen again
# wait for spacepress
self.kb.get_key(keylist=['space'], timeout=None)
# show fixation
self.disp.fill()
self.screen.draw_fixation(fixtype='dot')
self.disp.fill(self.screen)
self.disp.show()
self.screen.clear()
# wait for a bit, to allow participant to fixate
clock.pause(500)
# get samples
sl = [self.sample()] # samplelist, prefilled with 1 sample to prevent sl[-1] from producing an error; first sample will be ignored for RMS calculation
t0 = clock.get_time() # starting time
while clock.get_time() - t0 < 1000:
s = self.sample() # sample
if s != sl[-1] and s != (-1,-1) and s != (0,0):
sl.append(s)
# calculate RMS noise
Xvar = []
Yvar = []
for i in range(2,len(sl)):
Xvar.append((sl[i][0]-sl[i-1][0])**2)
Yvar.append((sl[i][1]-sl[i-1][1])**2)示例6: EyeTribeTracker
# 需要導入模塊: from pygaze.screen import Screen [as 別名]
# 或者: from pygaze.screen.Screen import clear [as 別名]
#.........這裏部分代碼省略.........
self.log("sampletime: %.2f ms" % self.sampletime)
self.log("fixation threshold: %s degrees" % self.fixtresh)
self.log("speed threshold: %s degrees/second" % self.spdtresh)
self.log("acceleration threshold: %s degrees/second**2" % self.accthresh)
self.log("pygaze initiation report end")
def calibrate(self):
"""Calibrates the eye tracking system
arguments
None
keyword arguments
None
returns
success -- returns True if calibration succeeded, or False if
not; in addition a calibration log is added to the
log file and some properties are updated (i.e. the
thresholds for detection algorithms)
"""
# CALIBRATION
# determine the calibration points
calibpoints = []
for x in [0.1,0.5,0.9]:
for y in [0.1,0.5,0.9]:
calibpoints.append((int(x*self.dispsize[0]),int(y*self.dispsize[1])))
random.shuffle(calibpoints)
# show a message
self.screen.clear()
self.screen.draw_text(text="Press Space to start the calibration or Q to quit.")
self.disp.fill(self.screen)
self.disp.show()
# wait for keyboard input
key, keytime = self.kb.get_key(keylist=['q','space'], timeout=None, flush=True)
if key == 'q':
quited = True
else:
quited = False
# run until the user is statisfied, or quits
calibrated = False
calibresult = None
while not quited and not calibrated:
# start a new calibration
self.eyetribe.calibration.start(pointcount=len(calibpoints))
# loop through calibration points
for cpos in calibpoints:
self.draw_calibration_target(cpos[0], cpos[1])
# wait for a bit to allow participant to start looking at
# the calibration point (#TODO: space press?)
clock.pause(1000)
# start calibration of point
self.eyetribe.calibration.pointstart(cpos[0],cpos[1])
# wait for a second
clock.pause(1000)
# stop calibration of this point
result = self.eyetribe.calibration.pointend()
# the final calibration point returns a dict (does it?)
if type(result) == dict:示例7: EyelinkGraphics
# 需要導入模塊: from pygaze.screen import Screen [as 別名]
# 或者: from pygaze.screen.Screen import clear [as 別名]
#.........這裏部分代碼省略.........
def set_tracker(self, tracker):
"""
Connects the tracker to the graphics environment.
Arguments:
tracker -- An tracker object as returned by pylink.EyeLink().
"""
self.tracker = tracker
self.tracker_version = tracker.getTrackerVersion()
if self.tracker_version >= 3:
self.tracker.sendCommand("enable_search_limits=YES")
self.tracker.sendCommand("track_search_limits=YES")
self.tracker.sendCommand("autothreshold_click=YES")
self.tracker.sendCommand("autothreshold_repeat=YES")
self.tracker.sendCommand("enable_camera_position_detect=YES")
def setup_cal_display(self):
"""
Sets up the initial calibration display, which contains a menu with
instructions.
"""
# show instructions
self.display.fill(self.menuscreen)
self.display.show()
def exit_cal_display(self):
"""Exits calibration display."""
self.clear_cal_display()
def record_abort_hide(self):
"""TODO: What does this do?"""
pass
def clear_cal_display(self):
"""Clears the calibration display"""
self.display.fill()
self.display.show()
def erase_cal_target(self):
"""TODO: What does this do?"""
self.clear_cal_display()
def draw_cal_target(self, x, y):
"""
Draws calibration target.
Arguments:
x -- The X coordinate of the target.
y -- The Y coordinate of the target.
"""
self.play_beep(pylink.CAL_TARG_BEEP)
self.screen.clear() 示例8:
# 需要導入模塊: from pygaze.screen import Screen [as 別名]
# 或者: from pygaze.screen.Screen import clear [as 別名]
disp.fill(scr)
t1 = disp.show()
log.write(["welcome", t1])
kb.get_key()
# # # # #
# test EyeTracker
#EyeTracker.connected
#EyeTracker.log_var
#EyeTracker.pupil_size
#EyeTracker.send_command
#EyeTracker.wait_for_event
scr.clear()
scr.draw_text("We're now going to test the eyetracker module. Press Space to start!")
disp.fill(scr)
t1 = disp.show()
log.write(["EyeTracker", t1])
kb.get_key()
# tracker.calibrate
tracker.calibrate()
# tracker.sample()
scr.clear()
scr.draw_text("The dot should follow your eye movements")
disp.fill(scr)
disp.show()
tracker.log("now testing sample function")示例9: Dummy
# 需要導入模塊: from pygaze.screen import Screen [as 別名]
# 或者: from pygaze.screen.Screen import clear [as 別名]
#.........這裏部分代碼省略.........
# function assumes a 'fixation' has started when 'gaze' position remains reasonably
# stable for five samples in a row (same as saccade end)
maxerr = 3 # pixels
# wait for reasonably stable position
xl = [] # list for last five samples (x coordinate)
yl = [] # list for last five samples (y coordinate)
moving = True
while moving:
npos = self.sample()
xl.append(npos[0]) # add newest sample
yl.append(npos[1]) # add newest sample
if len(xl) == 5:
# check if deviation is small enough
if max(xl)-min(xl) < maxerr and max(yl)-min(yl) < maxerr:
moving = False
# remove oldest sample
xl.pop(0); yl.pop(0)
# wait for a bit, to avoid immediately returning (runs go faster than mouse moves)
clock.pause(10)
return clock.get_time(), (xl[len(xl)-1],yl[len(yl)-1])
def wait_for_fixation_end(self):
"""Returns time and gaze position when a simulated fixation is ended"""
# function assumes that a 'fixation' has ended when a deviation of more than maxerr
# from the initial 'fixation' position has been detected (using Pythagoras, ofcourse)
stime, spos = self.wait_for_fixation_start()
maxerr = 3 # pixels
while True:
npos = self.sample() # get newest sample
if ((spos[0]-npos[0])**2 + (spos[1]-npos[1])**2)**0.5 > maxerr: # Pythagoras
break
return clock.get_time(), spos
def wait_for_blink_start(self):
"""Returns starting time and position of a simulated blink (mousebuttondown)"""
# blinks are simulated with mouseclicks: a right mouseclick simulates the closing
# of the eyes, a mousebuttonup the opening.
while not self.blinking:
pos = self.sample()
return clock.get_time(), pos
def wait_for_blink_end(self):
"""Returns ending time and position of a simulated blink (mousebuttonup)"""
# blinks are simulated with mouseclicks: a right mouseclick simulates the closing
# of the eyes, a mousebuttonup the opening.
# wait for blink start
while not self.blinking:
spos = self.sample()
# wait for blink end
while self.blinking:
epos = self.sample()
return clock.get_time(), epos
def set_draw_drift_correction_target_func(self, func):
"""See pygaze._eyetracker.baseeyetracker.BaseEyeTracker"""
self.draw_drift_correction_target = func
# ***
#
# Internal functions below
#
# ***
def draw_drift_correction_target(self, x, y):
"""
Draws the drift-correction target.
arguments
x -- The X coordinate
y -- The Y coordinate
"""
self.screen.clear()
self.screen.draw_fixation(fixtype='dot', colour=settings.FGC, \
pos=(x,y), pw=0, diameter=12)
self.display.fill(self.screen)
self.display.show()