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ColorMatcherTrial.py
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from __future__ import division
from psychopy import visual, core, misc, event
import numpy#for maths on arrays
from numpy.random import random, shuffle #we only need these two commands from this lib
# from IPython import embed as shell
from math import *
import random, sys
sys.path.append( 'exp_tools' )
# sys.path.append( os.environ['EXPERIMENT_HOME'] )
from ColorMatcherStim import *
from Trial import *
class ColorMatcherTrial(Trial):
def __init__(self, parameters = {}, phase_durations = [], session = None, screen = None, tracker = None):
super(ColorMatcherTrial, self).__init__(parameters = parameters, phase_durations = phase_durations, session = session, screen = screen, tracker = tracker)
self.color_diff = 0.0
self.stim = ColorMatcherStim(self.screen, self, self.session,
size_pix = self.parameters['stim_size'] * session.screen_pix_size[1],
num_elements = self.parameters['num_elements'] * (1/self.parameters['bar_width_ratio']),
RG_offset = self.parameters['RG_offset'])
this_instruction_string = '\tLeft\t\t/\tRight\n\nLess RG\t\t/\tMore RG'# self.parameters['task_instruction']
self.instruction = visual.TextStim(self.screen, text = this_instruction_string, font = 'Helvetica Neue', pos = (0, 0), italic = True, height = 30, alignHoriz = 'center')
self.instruction.setSize((1200,50))
self.run_time = 0.0
self.instruct_time = self.fix_time = self.stimulus_time = self.post_stimulus_time = 0.0
def draw(self):
"""docstring for draw"""
if self.phase == 0:
if self.ID == 0:
self.instruction.draw()
else:
self.session.fixation_outer_rim.draw()
self.session.fixation_rim.draw()
self.session.fixation.draw()
if self.phase == 1:
self.session.fixation_outer_rim.draw()
self.session.fixation_rim.draw()
self.session.fixation.draw()
elif self.phase == 2:
self.session.fixation_outer_rim.draw()
self.session.fixation_rim.draw()
self.session.fixation.draw()
elif self.phase == 3:
self.session.fixation_outer_rim.draw()
self.session.fixation_rim.draw()
self.session.fixation.draw()
self.stim.draw()
elif self.phase == 4:
self.session.fixation_outer_rim.draw()
self.session.fixation_rim.draw()
self.session.fixation.setColor((0,0,0))
self.session.fixation.draw()
super(ColorMatcherTrial, self).draw( )
def event(self):
for ev in event.getKeys():
if len(ev) > 0:
if ev in ['esc', 'escape', 'q']:
self.events.append([-99,self.session.clock.getTime()-self.start_time])
self.stopped = True
self.session.stopped = True
print 'run canceled by user'
# it handles both numeric and lettering modes
elif ev == ' ':
self.events.append([0,self.session.clock.getTime()-self.start_time])
if self.phase == 0:
self.phase_forward()
else:
self.events.append([-99,self.session.clock.getTime()-self.start_time])
self.stopped = True
print 'trial canceled by user'
elif ev == 't': # TR pulse
self.events.append([99,self.session.clock.getTime()-self.start_time])
if self.phase == 0:
self.phase_forward()
elif ev in self.session.response_button_signs.keys():
if self.phase == 3:
if self.session.response_button_signs[ev] == -1:
self.color_diff -= self.session.color_step
self.stim.redraw=True
elif self.session.response_button_signs[ev] == 1:
self.color_diff += self.session.color_step
self.stim.redraw=True
elif self.session.response_button_signs[ev] == 2:
self.phase_forward()
super(ColorMatcherTrial, self).key_event( ev )
def run(self, ID = 0):
self.ID = ID
super(ColorMatcherTrial, self).run()
while not self.stopped:
self.run_time = self.session.clock.getTime() - self.start_time
if self.phase == 0:
self.instruct_time = self.session.clock.getTime()
if (self.ID != 0) * (self.session.scanner == 'n'):
self.phase_forward()
if self.phase == 1:
# this trial phase is timed
self.initial_wait_time = self.session.clock.getTime()
if ( self.initial_wait_time - self.instruct_time ) > self.phase_durations[1]:
self.phase_forward()
if self.phase == 2:
if self.session.exp_start_time == 0.0:
self.session.exp_start_time = self.session.clock.getTime()
self.fix_time = self.session.clock.getTime()
# this trial phase is timed
if ( self.fix_time - self.initial_wait_time ) > self.phase_durations[2]:
self.phase_forward()
if self.phase == 3:
self.stimulus_time = self.session.clock.getTime()
if self.phase == 4:
# this trial phase is timed
self.session.all_color_values.append(self.stim.color_value)
self.post_stimulus_time = self.session.clock.getTime()
if ( self.post_stimulus_time - self.stimulus_time ) > self.phase_durations[4]:
self.stopped = True
# events and draw
self.event()
self.draw()
self.stop()