def presentStimulus(win, stimulus, param, info, do_mask=True):
import time
if (param.condition == 1):
pe = ParameterSet({'N_X' : info[NS_X]/2, 'N_Y' : info[NS_Y]/2, 'figpath':'.', 'matpath':'.'})
else: pe = ParameterSet({'N_X' : info[NS_X], 'N_Y' : info[NS_Y], 'figpath':'.', 'matpath':'.'})
im = Image(pe)
if (stimulus.ndim == 3):
img1 = stim(stimulus[:, :, 0])
img2 = stim(im.translate(stimulus[:, :, 0], [param.shift, 0]))
else:
img1 = stim(stimulus)
img2 = stim(im.translate(stimulus, [param.shift, 0]))
if param.flip == -1:
img2 = 255 - img2
if do_mask:
if (param.condition == 1):
im = Image(ParameterSet({'N_X' : info[NS_X]/2, 'N_Y' : info[NS_Y]/2, 'figpath':'.', 'matpath':'.'}))
else: im = Image(ParameterSet({'N_X' : info[NS_X], 'N_Y' : info[NS_Y], 'figpath':'.', 'matpath':'.'}))
mask = im.mask[:, :, np.newaxis]
img1 = ((img1 - 127)*mask + 127).astype(int)
img2 = ((img2 - 127)*mask + 127).astype(int)
win.background.fill(RGB.Gray)
win.screen.blit(win.background, (0, 0))
winblit(img1, win, info)
winblit(img2, win, info)
