def _draw_striped_meter(self, draw: ImageDraw.Draw):
"""Draw a striped meter"""
meter_value = self._meter_value()
x1 = y1 = self._metersize * M - 20
width = self._meterthickness * M
if self._wedgesize > 0:
draw.arc(
xy=(0, 0, x1, y1),
start=meter_value - self._wedgesize,
end=meter_value + self._wedgesize,
fill=self._meterforeground,
width=width,
)
else:
_from = self._arcoffset
_to = meter_value - 1
_step = self._stripethickness
for x in range(_from, _to, _step):
draw.arc(
xy=(0, 0, x1, y1),
start=x,
end=x + self._stripethickness - 1,
fill=self._meterforeground,
width=width,
)
def _draw_solid_meter(self, draw: ImageDraw.Draw):
"""Draw a solid meter"""
x1 = y1 = self._metersize * M - 20
width = self._meterthickness * M
if self._wedgesize > 0:
meter_value = self._meter_value()
draw.arc(
xy=(0, 0, x1, y1),
start=meter_value - self._wedgesize,
end=meter_value + self._wedgesize,
fill=self._meterforeground,
width=width,
)
else:
draw.arc(
xy=(0, 0, x1, y1),
start=self._arcoffset,
end=self._meter_value(),
fill=self._meterforeground,
width=width,
)
def rectangle_to_vinyle(np_img):
"""Convert lines into circles, from left=in to right=out (7min/img)"""
min_radius = np_img.shape[1] // 2
max_radius = np_img.shape[1] + min_radius
side_length = max_radius * 2
pil_circle = Image.new('RGB', (side_length, side_length), color='white')
drawer = Draw(pil_circle, mode='RGB')
degree_step = 180.0 / np_img.shape[0]
#angle is 0 at 3 o'clock, increasing clockwise
get_angle = lambda x: 270 - x * degree_step
for i, col in tqdm(enumerate(np.transpose(np_img, axes=[1,0,2])), total=np_img.shape[1]):
x0 = side_length // 2 - min_radius - i
x1 = side_length // 2 + min_radius + i
for j, pixel in enumerate(col):
drawer.arc([x0, x0, x1, x1], get_angle(j+1), get_angle(j), tuple(pixel), 2)
drawer.arc([x0, x0, x1, x1], get_angle(-j), get_angle(-j-1), tuple(pixel), 2)
return pil_circle
