def _transition(self, duration, color, brightness):
""" Transition.
:param duration: Time to transition.
:param color: Transition to this color.
:param brightness: Transition to this brightness.
"""
# Calculate brightness steps.
b_steps = 0
if brightness is not None:
b_steps = steps(self.brightness,
brightness, BRIGHTNESS_STEPS)
# Calculate color steps.
c_steps = 0
if color is not None:
c_steps = abs(util.rgb_to_hue(*self.color)
- util.rgb_to_hue(*color))
# Compute ideal step amount.
total = c_steps + b_steps
# Calculate wait.
wait = self._wait(duration, total)
# Scale down steps if no wait time.
if wait == 0:
total = self._scaled_steps(duration, total, total)
# Calculate start and end.
if total != b_steps:
c_start = rgb_to_hsv(*self._color)
c_end = rgb_to_hsv(*color)
b_start = self.brightness
# Perform transition.
j = 0
for i in range(total):
# Brightness.
if (b_steps > 0
and i % math.ceil(total/b_steps) == 0):
j += 1
self.brightness = util.transition(j, b_steps,
b_start, brightness)
# Color.
elif c_steps > 0:
rgb = hsv_to_rgb(*util.transition3(i - j + 1,
total - b_steps,
c_start, c_end))
self.color = Color(*rgb)
# Wait.
time.sleep(wait)
def _transition(self, duration, color, brightness):
""" Transition.
:param duration: Time to transition.
:param color: Transition to this color.
:param brightness: Transition to this brightness.
"""
# Calculate brightness steps.
b_steps = 0
if brightness is not None:
b_steps = steps(self.brightness, brightness, BRIGHTNESS_STEPS)
b_start = self.brightness
# Calculate color steps.
c_steps = 0
if color is not None:
c_steps = abs(
util.rgb_to_hue(*self.color) - util.rgb_to_hue(*color))
c_start = rgb_to_hsv(*self._color)
c_end = rgb_to_hsv(*color)
# Compute ideal step amount (at least one).
total = max(c_steps + b_steps, 1)
# Calculate wait.
wait = self._wait(duration, total)
# Scale down steps if no wait time.
if wait == 0:
total = self._scaled_steps(duration, total, total)
# Perform transition.
j = 0
for i in range(total):
# Brightness.
if (b_steps > 0 and i % math.ceil(total / b_steps) == 0):
j += 1
self.brightness = util.transition(j, b_steps, b_start,
brightness)
# Color.
elif c_steps > 0:
rgb = hsv_to_rgb(*util.transition3(i - j + 1, total -
b_steps, c_start, c_end))
self.color = Color(*rgb)
# Wait.
time.sleep(wait)
def color(self, color):
""" Set group color.
Color is set on a best-effort basis.
:param color: RGB color tuple.
"""
if color == RGB_WHITE:
self.white()
return
self._color = color
hue = util.rgb_to_hue(*color)
cmd = [0x40, hue]
self.send(cmd, select=True)
def color(self, color):
""" Set group color.
Color is set on a best-effort basis.
:param color: RGB color tuple.
"""
if color == RGB_WHITE:
self.white()
return
self._color = color
hue = util.rgb_to_hue(*color)
cmd = [0x40, hue]
self.send(cmd, select=True)
