def level_indicator(value,
text,
scaling,
width=20,
text_size=14,
text_gap=20,
position=(0, 0),
thresholds=None,
colour=constants.C_EXPYRIMENT_ORANGE):
"""make an level indicator in for of an Expyriment stimulus
text_gap: gap between indicator and text
scaling: Scaling object
Returns
--------
expyriment.Canvas
"""
value = scaling.trim(value)
# indicator
height = scaling.pixel_max - scaling.pixel_min
indicator = Canvas(size=[width + 2, height + 2], colour=(30, 30, 30))
zero = scaling.data2pixel(0)
px_bar_height = scaling.data2pixel(value) - zero
bar = Rectangle(size=(width, abs(px_bar_height)),
position=(0, zero + int((px_bar_height + 1) / 2)),
colour=colour)
bar.plot(indicator)
# levels & horizontal lines
try:
px_horizontal_lines = scaling.data2pixel(
values=np.array(thresholds.thresholds))
except:
px_horizontal_lines = None
if px_horizontal_lines is not None:
for px in px_horizontal_lines:
level = Rectangle(size=(width + 6, 2),
position=(0, px),
colour=constants.C_WHITE)
level.plot(indicator)
# text labels
txt = TextLine(text=text,
text_size=text_size,
position=(0, -1 * (int(height / 2.0) + text_gap)),
text_colour=constants.C_YELLOW)
# make return canvas
w = max(txt.surface_size[0], indicator.size[0])
h = height + 2 * (txt.surface_size[1]) + text_gap
rtn = Canvas(size=(w, h), colour=(0, 0, 0), position=position)
indicator.plot(rtn)
txt.plot(rtn)
return rtn
def level_indicator(value, text, scaling, width=20,
text_size=14, text_gap=20, position=(0,0), thresholds = None,
colour=constants.C_EXPYRIMENT_ORANGE):
"""make an level indicator in for of an Expyriment stimulus
text_gap: gap between indicator and text
scaling: Scaling object
Returns
--------
expyriment.Canvas
"""
value = scaling.trim(value)
# indicator
height = scaling.pixel_max - scaling.pixel_min
indicator = Canvas(size=[width + 2, height + 2],
colour=(30, 30, 30))
zero = scaling.data2pixel(0)
px_bar_height = scaling.data2pixel(value) - zero
bar = Rectangle(size=(width, abs(px_bar_height)),
position=(0, zero + int((px_bar_height + 1) / 2)),
colour=colour)
bar.plot(indicator)
# levels & horizontal lines
try:
px_horizontal_lines = scaling.data2pixel(values=np.array(thresholds.thresholds))
except:
px_horizontal_lines = None
if px_horizontal_lines is not None:
for px in px_horizontal_lines:
level = Rectangle(size=(width+6, 2),
position=(0, px),
colour=constants.C_WHITE)
level.plot(indicator)
# text labels
txt = TextLine(text=text, text_size=text_size,
position=(0, -1 * (int(height / 2.0) + text_gap)),
text_colour=constants.C_YELLOW)
# make return canvas
w = max(txt.surface_size[0], indicator.size[0])
h = height + 2 * (txt.surface_size[1]) + text_gap
rtn = Canvas(size=(w, h), colour=(0, 0, 0), position=position)
indicator.plot(rtn)
txt.plot(rtn)
return rtn
def plot(self, stimulus):
self.unlock_pixel_array()
return Canvas.plot(self, stimulus)
def plot(self, stimulus):
self.unlock_pixel_array()
return Canvas.plot(self, stimulus)
