glBlendFunc(starting RGBA values, desired RGBA values)'''
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
if __name__ == '__main__':
from experiment import Experiment
from state import UntilDone, Wait, Parallel, Serial
from keyboard import KeyPress
from video import Label
exp = Experiment(background_color="#4F33FF")
g = Grating(width=250, height=250, contrast=0.1)
with UntilDone():
KeyPress()
g.update(bottom=exp.screen.center)
KeyPress()
g = Grating(width=500,
height=500,
envelope='Gaussian',
frequency=75,
phase=11.0,
color_one='blue',
color_two='red',
contrast=0.25)
with UntilDone():
KeyPress()
g.update(bottom=exp.screen.center)
def FreeKey(self, lbl, max_duration=10.0, max_resp=100, base_time=None):
"""
Perform free recall typed responses.
Parameters
----------
lbl : Label state
The text that will appear on the screen to indicate to the
participant that they are to type a response. This text
will disappear from the screen when a response is
begun and return when ready for the next response. It's a
good idea to use something like a label with '???????'.
max_duration : {10.0, float}
The amount of time in seconds that the participant is given
to respond.
max_resp : {100, int}
Maximum number of responses that the participant is allowed
to enter.
base_time : float
Manually set a time reference for the start of the state. This
will be used to calculate reaction times.
Example
--------
FreeKey(Label('???????'), max_duration=15.0)
The message '??????' will appear on the screen,
and participants will be given 15 seconds to enter a response,
replacing that text. They can enter as many responses as possible
in the 15 second time period.
Log Parameters
---------------
All parameters above and below are available to be accessed and
manipulated within the experiment code, and will be automatically
recorded in the state.yaml and state.csv files. Refer to State class
docstring for additional logged parameters.
responses : list
List of typed responses, each with the following information:
first_key_time, first_key_rt, enter_key_time, enter_key_rt,
response, response_num.
The time is the actual time, the rt is the time since the
base_time.
"""
# I'd like the lbl to be up until the below is done. How?
# is it just that I would cancel it at the end here?
#lbl = Label(text=txt, font_size=40)
self.claim_child(lbl)
with UntilDone():
# container for responses
self.responses = []
# info for each response
self.fk_num_resp = 0
self.fk_first_key_time = 0
self.fk_first_key_rt = 0
self.fk_cur_resp = ''
# save the starting text and base time
self.fk_start_text = lbl.text
# handle starting values
self.max_duration = max_duration
self.max_resp = max_resp
# handle the base time
with If(base_time):
# use the passed value
self.base_time = base_time
with Else():
# make sure it's available
#Debug(fk_on_screen=lbl.on_screen)
Wait(until=lbl.on_screen)
#Debug(fk_on_screen=lbl.on_screen)
# use the label's appear time
self.base_time = lbl.appear_time['time']
# reset timing to the desired base_time
ResetClock(self.base_time)
# collect responses for the desired max_duration or max_resp
with Loop():
# accept a key response, time is based on label's ontime
kp = KeyPress(keys=asciiplus, base_time=self.base_time)
# process the key
with If(kp.pressed == 'BACKSPACE'):
# if there is text, remove a char
with If(self.fk_cur_resp != ''):
self.fk_cur_resp = self.fk_cur_resp[:-1]
lbl.text = self.fk_cur_resp
with Elif(kp.pressed == 'ENTER'):
# if there is text, log as a response
# increment the response counter
self.fk_num_resp += 1
# append the response to the list
self.responses += [
Ref(dict,
response=self.fk_cur_resp,
response_num=self.fk_num_resp,
first_key_time=self.fk_first_key_time,
first_key_rt=self.fk_first_key_rt,
enter_key_time=kp.press_time,
enter_key_rt=kp.rt)
]
# set starting text back and reset text
self.fk_cur_resp = ''
with If(self.fk_num_resp < self.max_resp):
# gonna keep going
lbl.text = self.fk_start_text
with Else():
# new key, so append it
# if it's first key, save the time
with If(self.fk_cur_resp == ''):
self.fk_first_key_rt = kp.rt
self.fk_first_key_time = kp.press_time
# append the text
with If(kp.pressed == 'SPACEBAR'):
# handle the space
self.fk_cur_resp += ' '
with Else():
# just append the letter
self.fk_cur_resp += kp.pressed
# update the label
lbl.text = self.fk_cur_resp
with UntilDone():
Wait(max_duration, until=(self.fk_num_resp >= max_resp))
# ran out of time, see if there is an unfinished response
with If(self.fk_cur_resp != ''):
# there is something, so log it, too
# increment the response counter
self.fk_num_resp += 1
# append the response to the list, but with no Enter key time
self.responses += [
Ref(dict,
response=self.fk_cur_resp,
response_num=self.fk_num_resp,
first_key_time=self.fk_first_key_time,
first_key_rt=self.fk_first_key_rt,
enter_key_time=None,
enter_key_rt=None)
]