def main():
# Parse args
args = prsr.parse_args()
# HRL parameters
wdth = 1024
hght = 768
# Section the screen - used by Core Loop
wqtr = wdth/4.0
# IO Stuff
dpxBool = False
dfl = 'design.csv'
rfl = 'results/' + args.sbj + '.csv'
flds = ['TrialTime','SelectedLuminance']
btns = ['Yellow','Red','Blue','Green','White']
# Central Coordinates (the origin of the graphics buffers is at the centre of the
# screen. Change this if you don't want a central coordinate system. If you delete
# this part the default will be a matrix style coordinate system.
coords = (-0.5,0.5,-0.5,0.5)
flipcoords = False
# Pass this to HRL if we want to use gamma correction.
lut = 'LUT.txt'
# If fs is true, we must provide a way to exit with e.g. checkEscape().
fs = False
# Step sizes for luminance changes
smlstp = 0.01
bgstp = 0.1
# HRL Init
hrl = HRL(wdth,hght,dpx=dpxBool,dfl=dfl,rfl=rfl,rhds=flds
,btns=btns,fs=fs,coords=coords,flipcoords=flipcoords)
# Core Loop
for dsgn in hrl.dmtx:
# Load Trial
mnl = float(dsgn['MinLuminance'])
mxl = float(dsgn['MaxLuminance'])
rds = float(dsgn['Radius'])
# Create Patches
mnptch = hrl.newTexture(np.array([[mnl]]),'circle')
mxptch = hrl.newTexture(np.array([[mxl]]),'circle')
cntrllm = uniform(0.0,1.0)
cntrlptch = hrl.newTexture(np.array([[cntrllm]]),'circle')
# Draw Patches
mnptch.draw((-wqtr,0),(2*rds,2*rds))
mxptch.draw((wqtr,0),(2*rds,2*rds))
cntrlptch.draw((0,0),(2*rds,2*rds))
# Draw but don't clear the back buffer
hrl.flip(clr=False)
# Prepare Core Loop logic
btn = None
t = 0.0
escp = False
# Adjust central patch
while ((btn != 'White') & (escp != True)):
(btn,t1) = hrl.readButton()
t += t1
if btn == 'Yellow':
cntrllm += smlstp
elif btn == 'Red':
cntrllm += bgstp
elif btn == 'Blue':
cntrllm -= smlstp
elif btn == 'Green':
cntrllm -= bgstp
# Bound Checking
if cntrllm > 1: cntrllm = 1
if cntrllm < 0: cntrllm = 0
# Update display
cntrlptch = hrl.newTexture(np.array([[cntrllm]]),'circle')
cntrlptch.draw((0,0),(2*rds,2*rds))
hrl.flip(clr=False)
if hrl.checkEscape(): escp = True
# Save results of trial
hrl.rmtx['TrialTime'] = t
hrl.rmtx['SelectedLuminance'] = cntrllm
hrl.writeResultLine()
# Check if escape has been pressed
if escp: break
# Experiment is over!
hrl.close()
